BlueJay wrote:Quiet as crickets. Let's hope the tropics get the hint.
Happy Friday everyone!
It won't be difficult, but we're due for a lot more rain out of Bret's corpse than crazy Cindy.
June 2017: Typical Summertime WX To End Month
It won't be difficult, but we're due for a lot more rain out of Bret's corpse than crazy Cindy.
Fortunately, some relief this weekend!MontgomeryCoWx wrote:I hate Summer
Area Forecast Discussion
National Weather Service Houston/Galveston TX
342 PM CDT Fri Jun 23 2017
.DISCUSSION...
A hot afternoon is well underway for Southeast Texas with 3 PM CDT
temperatures in the low to mid 90s inland and heat index values
ranging from 98 to 107. Visible satellite imagery shows a
scattered to broken stratocumulus deck developing around 4500 feet
and spreading south within an area of isentropic lift on the 310 K
surface. RAP guidance shows this area of lift gradually
translating east over the next few hours (likely as the remnants
of Cindy pull farther away from the region), allowing at least
some of these clouds to translate towards the south and east with
it. For those areas lucky to get some shade from these clouds,
temperatures may quickly drop 2-3 degrees and provide some relief
from the heat. Otherwise, cannot rule out a stray shower along the
coast or across the far extreme eastern counties through the
remainder of the day but this would be the exception and not the
rule.
Not much cooling is expected overnight with lows only falling into
the mid 70s to low 80s, but rain chances will increase across the
region on Saturday and Sunday as Southeast Texas remains situated
in a relative upper level weakness between two ridges. Speed
convergence along the coast Saturday will result in scattered
morning showers, with the northern counties seeing a thunderstorm
complex along an approaching (weak) cold front also during the
morning hours. Regional radar mosaic already shows storms
beginning to develop along this cold front across portions of the
Low Rolling Plains and along the Red River, with additional
upscale growth into a thunderstorm complex expected through the
remainder of the afternoon and evening hours as the front pushes
south towards the region.
The cold front looks to make a run for the Interstate 10 corridor
through the remainder of the morning hours Saturday, stalling
near or north of it as a sea breeze pushes inland during the late
morning and afternoon hours. Daytime heating and the collision of
both of these boundaries is expected to result in the development
of scattered to numerous showers and thunderstorms on Saturday,
with greatest coverage centering wherever the boundaries collide
(likely near Interstate 10). Convection should wane with loss of
heating by Saturday evening. Another round of morning showers are
expected on Sunday, with scattered to numerous thunderstorms again
developing with daytime heating and likely focusing along
wherever the remnant frontal boundary (or outflow boundaries from
Saturday`s convection) is. The front won`t have much of an effect
on temperatures but increased clouds on Saturday and Sunday will
keep temperatures a few degrees cooler than today with highs in
the mid 80s to low 90s.
Similar to what the previous forecast noted, storm motions will
be very slow both days (around 5 knots Saturday, 10 knots Sunday)
and this, combined with precipitable water values 1.8-2 inches,
will result in the threat for locally heavy rainfall and the
potential for some localized flood issues as thunderstorms have
the potential to remain nearly stationary before collapsing. SREF
plumes show forecast rain totals generally in the 1-2 inch range
during this time, but would not be surprised to see some isolated
2-3 inch totals occur given the aforementioned environmental
conditions. Will also have to keep an eye on a gusty wind threat
as well on Saturday. Relative humidity progs show drier air
evident over the northwest Gulf on afternoon water vapor imagery
working its way into the region from the south/southwest. This
drier air would help enhance evaporational cooling, accelerating
downdrafts and creating the potential for gusty winds in stronger
convection on Saturday.
The region remains under this relative weakness in the upper flow
through the middle of the upcoming week, with mainly daytime
shower and thunderstorm chances inland through mid-week.
Expect these chances to gradually decrease early to mid next week
as 500 MB heights increase and atmospheric moisture content drops
a bit. These increasing mid-level heights and decreasing rain
chances will also result in gradually warming temperatures with
highs increasing to near or slightly above normal (low to mid 90s)
by the end of the next work week.
Huffman
&&
.MARINE...
Winds are slowly diminishing today, and seas should also come
down with them on a bit of a delay. Though winds may not quite be
at the SCEC threshold, the lag in waves should justify keeping it
in place into tonight. Going into the weekend and early next week,
light to moderate flow is expected, generally onshore. An
approaching front may back winds slightly to more easterly from
Sunday, but will still be generally onshore. Some stronger winds
may be possible mid to late week.
Tides also remain elevated, and astronomical high tide at around
two feet at Galveston are not aiding matters. Another chance at
coastal flooding in vulnerable areas around high tide early
tomorrow morning can`t be ruled out. Will hold off on another
Coastal Flood Advisory for now to gauge tidal behavior through low
tide and into the upswing towards high tide.
Luchs
&&
.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL) 77 90 73 87 71 / 20 40 50 60 30
Houston (IAH) 78 90 75 87 73 / 20 70 40 70 40
Galveston (GLS) 81 88 80 87 78 / 30 40 20 50 50
National Weather Service Houston/Galveston TX
342 PM CDT Fri Jun 23 2017
.DISCUSSION...
A hot afternoon is well underway for Southeast Texas with 3 PM CDT
temperatures in the low to mid 90s inland and heat index values
ranging from 98 to 107. Visible satellite imagery shows a
scattered to broken stratocumulus deck developing around 4500 feet
and spreading south within an area of isentropic lift on the 310 K
surface. RAP guidance shows this area of lift gradually
translating east over the next few hours (likely as the remnants
of Cindy pull farther away from the region), allowing at least
some of these clouds to translate towards the south and east with
it. For those areas lucky to get some shade from these clouds,
temperatures may quickly drop 2-3 degrees and provide some relief
from the heat. Otherwise, cannot rule out a stray shower along the
coast or across the far extreme eastern counties through the
remainder of the day but this would be the exception and not the
rule.
Not much cooling is expected overnight with lows only falling into
the mid 70s to low 80s, but rain chances will increase across the
region on Saturday and Sunday as Southeast Texas remains situated
in a relative upper level weakness between two ridges. Speed
convergence along the coast Saturday will result in scattered
morning showers, with the northern counties seeing a thunderstorm
complex along an approaching (weak) cold front also during the
morning hours. Regional radar mosaic already shows storms
beginning to develop along this cold front across portions of the
Low Rolling Plains and along the Red River, with additional
upscale growth into a thunderstorm complex expected through the
remainder of the afternoon and evening hours as the front pushes
south towards the region.
The cold front looks to make a run for the Interstate 10 corridor
through the remainder of the morning hours Saturday, stalling
near or north of it as a sea breeze pushes inland during the late
morning and afternoon hours. Daytime heating and the collision of
both of these boundaries is expected to result in the development
of scattered to numerous showers and thunderstorms on Saturday,
with greatest coverage centering wherever the boundaries collide
(likely near Interstate 10). Convection should wane with loss of
heating by Saturday evening. Another round of morning showers are
expected on Sunday, with scattered to numerous thunderstorms again
developing with daytime heating and likely focusing along
wherever the remnant frontal boundary (or outflow boundaries from
Saturday`s convection) is. The front won`t have much of an effect
on temperatures but increased clouds on Saturday and Sunday will
keep temperatures a few degrees cooler than today with highs in
the mid 80s to low 90s.
Similar to what the previous forecast noted, storm motions will
be very slow both days (around 5 knots Saturday, 10 knots Sunday)
and this, combined with precipitable water values 1.8-2 inches,
will result in the threat for locally heavy rainfall and the
potential for some localized flood issues as thunderstorms have
the potential to remain nearly stationary before collapsing. SREF
plumes show forecast rain totals generally in the 1-2 inch range
during this time, but would not be surprised to see some isolated
2-3 inch totals occur given the aforementioned environmental
conditions. Will also have to keep an eye on a gusty wind threat
as well on Saturday. Relative humidity progs show drier air
evident over the northwest Gulf on afternoon water vapor imagery
working its way into the region from the south/southwest. This
drier air would help enhance evaporational cooling, accelerating
downdrafts and creating the potential for gusty winds in stronger
convection on Saturday.
The region remains under this relative weakness in the upper flow
through the middle of the upcoming week, with mainly daytime
shower and thunderstorm chances inland through mid-week.
Expect these chances to gradually decrease early to mid next week
as 500 MB heights increase and atmospheric moisture content drops
a bit. These increasing mid-level heights and decreasing rain
chances will also result in gradually warming temperatures with
highs increasing to near or slightly above normal (low to mid 90s)
by the end of the next work week.
Huffman
&&
.MARINE...
Winds are slowly diminishing today, and seas should also come
down with them on a bit of a delay. Though winds may not quite be
at the SCEC threshold, the lag in waves should justify keeping it
in place into tonight. Going into the weekend and early next week,
light to moderate flow is expected, generally onshore. An
approaching front may back winds slightly to more easterly from
Sunday, but will still be generally onshore. Some stronger winds
may be possible mid to late week.
Tides also remain elevated, and astronomical high tide at around
two feet at Galveston are not aiding matters. Another chance at
coastal flooding in vulnerable areas around high tide early
tomorrow morning can`t be ruled out. Will hold off on another
Coastal Flood Advisory for now to gauge tidal behavior through low
tide and into the upswing towards high tide.
Luchs
&&
.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL) 77 90 73 87 71 / 20 40 50 60 30
Houston (IAH) 78 90 75 87 73 / 20 70 40 70 40
Galveston (GLS) 81 88 80 87 78 / 30 40 20 50 50
-
TexasBreeze
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What is with all of the smoke in the air today? Visible in satellite in central TX too.
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Andrew
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- Location: North-West Houston
- Contact:
Looks like rain chances are going to stay around for the remainder of the week. Tomorrow could allow for some isolated severe thunderstorms with hail and wind being the primary threat. Overall though I think chances for rain are a lot better this week for most people, especially in comparison to last week.
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MESOSCALE PRECIPITATION DISCUSSION 0390...CORRECTED
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
323 AM EDT SAT JUN 24 2017
CORRECTED FOR SENTENCE FRAGMENT IN THE SECOND DISCUSSION PARAGRAPH
AREAS AFFECTED...SOUTHWEST OK & PORTIONS OF NORTHERN TX
CONCERNING...HEAVY RAINFALL...FLASH FLOODING POSSIBLE
VALID 240610Z - 241210Z
summary... elevated convection continues to build and expand in coverage across the tx panhandle and southwest ok. hourly rain rates to 2" and local amounts to 4" are expected.
discussion... showers and thunderstorms have been forming on the northwest side of an instability pool centered south of dallas, well to the north of associated surface boundaries. the convection appears to be tapping instability at the 700 hpa level where the flow is more westerly. mucape values in the area are 1000-2000 j/kg. closer to dallas tx, thunderstorms continue to propagate southwest slowly due to a long-lived outflow boundary/convective arc which was spawned by thunderstorm activity in ia and co 24 hours ago. precipitable water values of 1.5-2" exist here per gps data. effective bulk shear of 25-50 kts is helping to organize thunderstorms. the mean 850-400 hpa winds are fairly light throughout the region, which could magnify rainfall efficiency.
hourly rain rates up to 2" are expected. mass field-wise, a mesoscale wave is expected to drop southwest with time into central tx due to the mobile outflow boundary, which should allow convection from near dallas to follow in suit. the 00z nam conest appears to have the best handle of this activity from a pattern perspective, but the guidance is unified on a signal for ~4" in this area. there is concern, based on the nam conest, that the activity could bridge across to the southwest moving convection moving across the dallas-fort worth area at this time. the expected local totals could challenge the high flash flood guidance values in this area -- the threat appears highest in
urban locations.
ROTH
ATTN...WFO...AMA...EWX...FWD...LUB...OUN...SHV...SJT...
ATTN...RFC...ABRFC...LMRFC...WGRFC...
-
srainhoutx
- Site Admin
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Active several days ahead. Unusually high 2-3.3 PW's are in place over our Region suggesting very high rainfall rates are very possible wherever these extremely slow moving thunderstorms development. An outflow boundary to or N with a sea/bay breeze boundary advancing inland is setting the stage for a potential heavy rainfall event. Convective temperatures are rather low with the rich/deep tropical airmass over head and across the Gulf.
I see 93E along the Pacific Coast of. Mexico has continued to organize and could become Tropical Storm Dora over the next 24 to 48 hours. Our old friend that pesky Monsoonal Trough continues to be very active as seen via MIMIC Imagery. Mid/upper level moisture is spreading into the Bay of Campeche and a moisture surge associated with Bret remnants/tropical wave axis and a stalling frontal boundary somewhere along and possibly just N along the I-10 Corridor to HWY 105 could focus heavy and possibly training thunderstorm activity. We may see a brief break mid day into the early afternoon before additional showers and thunderstorms redevelop.
As Andrew stated, the chance for daily showers and thunderstorm activity could continue throughout the 7 day period after inspecting the morning 7 Day Quantitative Precipitation Forecast.
I see 93E along the Pacific Coast of. Mexico has continued to organize and could become Tropical Storm Dora over the next 24 to 48 hours. Our old friend that pesky Monsoonal Trough continues to be very active as seen via MIMIC Imagery. Mid/upper level moisture is spreading into the Bay of Campeche and a moisture surge associated with Bret remnants/tropical wave axis and a stalling frontal boundary somewhere along and possibly just N along the I-10 Corridor to HWY 105 could focus heavy and possibly training thunderstorm activity. We may see a brief break mid day into the early afternoon before additional showers and thunderstorms redevelop.
As Andrew stated, the chance for daily showers and thunderstorm activity could continue throughout the 7 day period after inspecting the morning 7 Day Quantitative Precipitation Forecast.
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Flood Advisory
National Weather Service Houston/Galveston TX
737 AM CDT SAT JUN 24 2017
Harris TX-
737 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
East central Harris County in southeastern Texas...
* Until 930 AM CDT.
* At 735 AM CDT, Doppler radar and automated rain gauges indicated
heavy rain due to thunderstorms generally centered along the
southern portion of Lake Houston. Rain rates between 2 and 2.5
inches per hour have been observed and the cluster of
precipitation is showing little movement. This will cause minor
flooding in the advisory area.
* Some locations that will experience flooding include...
Humble, Highlands, Barrett, Channelview, Crosby, Lake Houston Dam,
Lake Houston, Atascocita, Sheldon, East Houston, East Little York /
Homestead and southeastern Bush Intercontinental Airport.
National Weather Service Houston/Galveston TX
737 AM CDT SAT JUN 24 2017
Harris TX-
737 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
East central Harris County in southeastern Texas...
* Until 930 AM CDT.
* At 735 AM CDT, Doppler radar and automated rain gauges indicated
heavy rain due to thunderstorms generally centered along the
southern portion of Lake Houston. Rain rates between 2 and 2.5
inches per hour have been observed and the cluster of
precipitation is showing little movement. This will cause minor
flooding in the advisory area.
* Some locations that will experience flooding include...
Humble, Highlands, Barrett, Channelview, Crosby, Lake Houston Dam,
Lake Houston, Atascocita, Sheldon, East Houston, East Little York /
Homestead and southeastern Bush Intercontinental Airport.
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srainhoutx
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Flood Advisory
National Weather Service Houston/Galveston TX
750 AM CDT SAT JUN 24 2017
Austin TX-Fort Bend TX-Waller TX-
750 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
Southeastern Austin County in southeastern Texas...
Northwestern Fort Bend County in southeastern Texas...
Southern Waller County in southeastern Texas...
* Until 845 AM CDT.
* At 749 AM CDT, Doppler radar indicated heavy rain due to slow
moving thunderstorms. Radar estimates 1 to 3 inches of rain has
fallen with moderate to heavy rain continuing. This will cause
minor flooding in the advisory area.
* Some locations that will experience flooding include...
Northwestern Rosenberg, Katy, Sealy, Brookshire, Wallis, Fulshear,
Simonton, San Felipe, Pattison, Orchard, Weston Lakes and Cinco
Ranch.
National Weather Service Houston/Galveston TX
750 AM CDT SAT JUN 24 2017
Austin TX-Fort Bend TX-Waller TX-
750 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
Southeastern Austin County in southeastern Texas...
Northwestern Fort Bend County in southeastern Texas...
Southern Waller County in southeastern Texas...
* Until 845 AM CDT.
* At 749 AM CDT, Doppler radar indicated heavy rain due to slow
moving thunderstorms. Radar estimates 1 to 3 inches of rain has
fallen with moderate to heavy rain continuing. This will cause
minor flooding in the advisory area.
* Some locations that will experience flooding include...
Northwestern Rosenberg, Katy, Sealy, Brookshire, Wallis, Fulshear,
Simonton, San Felipe, Pattison, Orchard, Weston Lakes and Cinco
Ranch.
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srainhoutx
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Interesting Mid/Upper level feature in the Western Gulf is pulling the moisture from 93E into the Bay of Campeche increasing shower and isolated thunderstorm activity to its S and possibly Eastern flank later today. No tropical development is expected, but it adds to the complicate/complex forecast scenario ahead the next several days...
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BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Houston/Galveston TX
807 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flash Flood Warning for...
East central Harris County in southeastern Texas...
* Until 1100 AM CDT.
* At 806 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Over 4.3 inches of rain has
already fallen over southern parts of the Lake Houston area with
continued moderate to heavy rain occurring. Flash flooding is
expected to begin shortly.
* Some locations that will experience flooding include...
Lake Houston Dam, Lake Houston and southern Atascocita.
Flash Flood Warning
National Weather Service Houston/Galveston TX
807 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flash Flood Warning for...
East central Harris County in southeastern Texas...
* Until 1100 AM CDT.
* At 806 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Over 4.3 inches of rain has
already fallen over southern parts of the Lake Houston area with
continued moderate to heavy rain occurring. Flash flooding is
expected to begin shortly.
* Some locations that will experience flooding include...
Lake Houston Dam, Lake Houston and southern Atascocita.
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Flood Advisory
National Weather Service Houston/Galveston TX
823 AM CDT SAT JUN 24 2017
Grimes TX-Montgomery TX-San Jacinto TX-Liberty TX-Polk TX-
823 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
Southeastern Grimes County in southeastern Texas...
Central Montgomery County in southeastern Texas...
Southern San Jacinto County in southeastern Texas...
Northwestern Liberty County in southeastern Texas...
Southern Polk County in southeastern Texas...
* Until 1015 AM CDT.
* At 821 AM CDT, Doppler radar and automated rain gauges indicated
heavy rain due to slow moving thunderstorms. This will cause minor
flooding in the advisory area. Up to two inches of rain has fallen
and moderate to heavy rain continues.
* Some locations that will experience flooding include...
Conroe, Cleveland, Willis, Pinehurst, The Woodlands, Shepherd,
Panorama Village, Magnolia, Cut And Shoot, North Cleveland, Lake
Conroe Dam, Tarkington Prairie and Romayor.
National Weather Service Houston/Galveston TX
823 AM CDT SAT JUN 24 2017
Grimes TX-Montgomery TX-San Jacinto TX-Liberty TX-Polk TX-
823 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
Southeastern Grimes County in southeastern Texas...
Central Montgomery County in southeastern Texas...
Southern San Jacinto County in southeastern Texas...
Northwestern Liberty County in southeastern Texas...
Southern Polk County in southeastern Texas...
* Until 1015 AM CDT.
* At 821 AM CDT, Doppler radar and automated rain gauges indicated
heavy rain due to slow moving thunderstorms. This will cause minor
flooding in the advisory area. Up to two inches of rain has fallen
and moderate to heavy rain continues.
* Some locations that will experience flooding include...
Conroe, Cleveland, Willis, Pinehurst, The Woodlands, Shepherd,
Panorama Village, Magnolia, Cut And Shoot, North Cleveland, Lake
Conroe Dam, Tarkington Prairie and Romayor.
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Conditions continue to deteriorate as boundary collisions are occurring along the HWY 105 area. Getting a bit concerned that flooding issues may increase across potions of Waller/Montgomery/Harris/Austin/Fort Bend/Liberty Counties as rainfall rates of near 2 inch per hour are increasing. I would not be surprise to see additional Flood Warnings/Advisories coming shortly.
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Flood Advisory
National Weather Service Houston/Galveston TX
845 AM CDT SAT JUN 24 2017
Chambers TX-Liberty TX-Harris TX-
845 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
Northwestern Chambers County in southeastern Texas...
Southwestern Liberty County in southeastern Texas...
Northeastern Harris County in southeastern Texas...
* Until 1145 AM CDT.
* At 844 AM CDT, Doppler radar indicated heavy rain due to training
thunderstorms. Rain rates up to 2.5 inches per hour will cause
minor flooding in the advisory area.
* Some locations that will experience flooding include...
Northern Baytown, Liberty, Dayton, Barrett, Crosby, northwestern
Mont Belvieu, Old River-Winfree, Plum Grove and Kenefick.
National Weather Service Houston/Galveston TX
845 AM CDT SAT JUN 24 2017
Chambers TX-Liberty TX-Harris TX-
845 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
Northwestern Chambers County in southeastern Texas...
Southwestern Liberty County in southeastern Texas...
Northeastern Harris County in southeastern Texas...
* Until 1145 AM CDT.
* At 844 AM CDT, Doppler radar indicated heavy rain due to training
thunderstorms. Rain rates up to 2.5 inches per hour will cause
minor flooding in the advisory area.
* Some locations that will experience flooding include...
Northern Baytown, Liberty, Dayton, Barrett, Crosby, northwestern
Mont Belvieu, Old River-Winfree, Plum Grove and Kenefick.
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Flood Advisory
National Weather Service Houston/Galveston TX
856 AM CDT SAT JUN 24 2017
Austin TX-Fort Bend TX-Brazoria TX-Waller TX-Harris TX-
856 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
Southeastern Austin County in southeastern Texas...
Fort Bend County in southeastern Texas...
North central Brazoria County in southeastern Texas...
Southeastern Waller County in southeastern Texas...
Southwestern Harris County in southeastern Texas...
* Until 1100 AM CDT.
* At 853 AM CDT, Doppler radar and automated rain gauges indicated
heavy rain due to training slow moving showers and thunderstorms.
Guage networks show rain rates of 1 inch every 30 minutes with
some of this precipitation. Where this occurs it will cause minor
flooding in the advisory area.
* Some locations that will experience flooding include...
Pearland, Sugar Land, Missouri City, Rosenberg, Alvin, Stafford,
Bellaire, West University Place, Katy, Richmond, Manvel,
Brookshire, Hunters Creek Village, Bunker Hill Village, Piney Point
Village, Downtown Houston, Greenway / Upper Kirby Area, Spring
Branch North, Greater Heights and Fresno.
National Weather Service Houston/Galveston TX
856 AM CDT SAT JUN 24 2017
Austin TX-Fort Bend TX-Brazoria TX-Waller TX-Harris TX-
856 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
Southeastern Austin County in southeastern Texas...
Fort Bend County in southeastern Texas...
North central Brazoria County in southeastern Texas...
Southeastern Waller County in southeastern Texas...
Southwestern Harris County in southeastern Texas...
* Until 1100 AM CDT.
* At 853 AM CDT, Doppler radar and automated rain gauges indicated
heavy rain due to training slow moving showers and thunderstorms.
Guage networks show rain rates of 1 inch every 30 minutes with
some of this precipitation. Where this occurs it will cause minor
flooding in the advisory area.
* Some locations that will experience flooding include...
Pearland, Sugar Land, Missouri City, Rosenberg, Alvin, Stafford,
Bellaire, West University Place, Katy, Richmond, Manvel,
Brookshire, Hunters Creek Village, Bunker Hill Village, Piney Point
Village, Downtown Houston, Greenway / Upper Kirby Area, Spring
Branch North, Greater Heights and Fresno.
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srainhoutx
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NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1009 AM EDT SAT JUN 24 2017
AREAS AFFECTED...SOUTHEAST TX
CONCERNING...HEAVY RAINFALL...FLASH FLOODING POSSIBLE
VALID 241400Z - 241800Z
SUMMARY...VERY SLOW-MOVING SHOWERS AND THUNDERSTORMS WITH INTENSE
RAINFALL RATES MAY CAUSE SOME ADDITIONAL CONCERNS FOR RUNOFF AND
POSSIBLE FLASH FLOODING OVER THE NEXT FEW HOURS.
DISCUSSION...EXPERIMENTAL GOES-16 0.64 MICRON/VIS IMAGERY SHOWS AN
AGITATED CU/TCU FIELD ALONG THE IMMEDIATE MIDDLE AND UPPER TX
COAST...WITH NUMEROUS SMALL SCALE CLOUD STREETS ADVANCING
NORTHWEST IN CONJUNCTION WITH THE LOW LEVEL SOUTHEAST FLOW. THE
BOUNDARY LAYER IS RATHER UNSTABLE AND THE INTERACTION OF THIS WITH
AN OUTFLOW BOUNDARY A BIT FARTHER INLAND COUPLED WITH A VERY
DIFFLUENT UPPER AIR SIGNATURE IS ALLOWING CONVECTION TO EXPAND IN
COVERAGE.
CONVECTIVE CELL MOTION IS QUITE WEAK THOUGH WHICH IS ALLOW FOR
SOME HEAVY RAINFALL TOTALS. ALREADY THERE HAVE BEEN LOCALLY SOME 3
TO 4+ INCH AMOUNTS AROUND THE HOUSTON METROPOLITAN AREA...WHICH IS
BEING AIDED BY A VERY MOIST ENVIRONMENT WITH PWATS UP BETWEEN 2 TO
2.2 INCHES. THIS IS ENHANCING THE RAINFALL RATES WITH HIGHLY
EFFICIENT RAINFALL PROCESSES AT WORK.
EXPECT SOME ADDITIONAL RAINFALL AMOUNTS OF AS MUCH AS 2 TO 4
INCHES...WITH ISOLATED TOTALS POSSIBLE AS HIGH AS 6 INCHES WHERE A
FEW CELL MERGERS OCCUR AND TEND TO STALL GIVEN THE WEAK STEERING
FLOW/CELL MOTION.
ORRISON
ATTN...WFO...CRP...EWX...HGX...LCH...
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey
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srainhoutx
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Flood Advisory
National Weather Service Houston/Galveston TX
920 AM CDT SAT JUN 24 2017
Harris TX-
920 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
Eastern Harris County in southeastern Texas...
* Until 1215 PM CDT.
* At 919 AM CDT, Doppler radar indicated heavy rain due to slow
moving and training thunderstorms. High rainfall rates...over 1
inch every 30 minutes will cause minor flooding in portions of the
advisory area.
* Some locations that will experience flooding include...
Pasadena, northwestern Baytown, La Porte, Deer Park, South Houston,
Humble, Galena Park, Jacinto City, Webster, Cloverleaf, Downtown
Houston, Northside / Northline, Kingwood, Second Ward, Greater
Greenspoint, South Belt / Ellington, Highlands, Barrett, Greater
Eastwood and Near Northside Houston.
National Weather Service Houston/Galveston TX
920 AM CDT SAT JUN 24 2017
Harris TX-
920 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flood Advisory for...
Eastern Harris County in southeastern Texas...
* Until 1215 PM CDT.
* At 919 AM CDT, Doppler radar indicated heavy rain due to slow
moving and training thunderstorms. High rainfall rates...over 1
inch every 30 minutes will cause minor flooding in portions of the
advisory area.
* Some locations that will experience flooding include...
Pasadena, northwestern Baytown, La Porte, Deer Park, South Houston,
Humble, Galena Park, Jacinto City, Webster, Cloverleaf, Downtown
Houston, Northside / Northline, Kingwood, Second Ward, Greater
Greenspoint, South Belt / Ellington, Highlands, Barrett, Greater
Eastwood and Near Northside Houston.
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey
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srainhoutx
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HGX reports 6.08 inches of rain so far around the Lake Houston Area with more to come.
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey
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srainhoutx
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BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Houston/Galveston TX
938 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flash Flood Warning for...
Southeastern Harris County in southeastern Texas...
* Until 1245 PM CDT.
* At 937 AM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Flash
flooding is expected to begin shortly. Observed rainfall rates of
2 inches in 30 minutes is occurring at some locations.
* Some locations that will experience flooding include...
Pasadena, Baytown, Deer Park, South Houston, Galena Park, Jacinto
City, Cloverleaf, Second Ward, South Belt / Ellington, Highlands,
Barrett, Greater Eastwood, Near Northside Houston, Greater Fifth
Ward, Greater Hobby Area, Channelview, Northside / Northline,
Aldine, Downtown Houston and Greater Third Ward.
Flash Flood Warning
National Weather Service Houston/Galveston TX
938 AM CDT SAT JUN 24 2017
The National Weather Service in League City has issued a
* Flash Flood Warning for...
Southeastern Harris County in southeastern Texas...
* Until 1245 PM CDT.
* At 937 AM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Flash
flooding is expected to begin shortly. Observed rainfall rates of
2 inches in 30 minutes is occurring at some locations.
* Some locations that will experience flooding include...
Pasadena, Baytown, Deer Park, South Houston, Galena Park, Jacinto
City, Cloverleaf, Second Ward, South Belt / Ellington, Highlands,
Barrett, Greater Eastwood, Near Northside Houston, Greater Fifth
Ward, Greater Hobby Area, Channelview, Northside / Northline,
Aldine, Downtown Houston and Greater Third Ward.
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey
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