MAY 2019: Wednesday Storm Complex/Scattered Showers To End May

General Weather Discussions and Analysis
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srainhoutx
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Texashawk wrote: Thu May 09, 2019 8:23 pm Are these storms going to diminish with loss of night time heating or are they going to go all night?
No. We are expecting this activity to probably increase a bit as the activity to our SW and West make their way NE and East. Long night ahead.
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey

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unome
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srainhoutx wrote: Thu May 09, 2019 8:17 pm Numerous reports of quarter and golf ball sized hail coming in from 610 Loop @ 290 and points NW and W

from the "purple" on radar here: https://www.wpc.ncep.noaa.gov/exper/lsr ... autoreload
mckinne63
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Thus far everything is to the Northwest of us in Stafford. Seeing lots of lightning and hearing thunder
CAK
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Texashawk wrote: Thu May 09, 2019 8:23 pm Are these storms going to diminish with loss of night time heating or are they going to go all night?
Same question?
Ounce
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BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Houston/Galveston TX
808 PM CDT Thu May 9 2019

The National Weather Service in League City has issued a

* Severe Thunderstorm Warning for...
Southeastern Trinity County in southeastern Texas...
North central San Jacinto County in southeastern Texas...
Northwestern Polk County in southeastern Texas...

* Until 845 PM CDT.

* At 807 PM CDT, a severe thunderstorm was located near Onalaska, or
13 miles northwest of Livingston, moving north at 20 mph.

HAZARD...Tennis ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect
damage to roofs, siding, windows, and vehicles.

* Locations impacted include...
Onalaska and Groveton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&
Cpv17
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CAK wrote: Thu May 09, 2019 8:27 pm
Texashawk wrote: Thu May 09, 2019 8:23 pm Are these storms going to diminish with loss of night time heating or are they going to go all night?
Same question?
It’s already been answered lol but I’ll answer it again. The answer is no. It’s only going to get worse throughout the night.
Ounce
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CAK wrote: Thu May 09, 2019 8:27 pm
Texashawk wrote: Thu May 09, 2019 8:23 pm Are these storms going to diminish with loss of night time heating or are they going to go all night?
Same question?
All night is forecasted.
art3
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Wondering if we in meyerland area face the fate of w houston in a bit-
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Severe Weather Statement
National Weather Service Houston/Galveston TX
803 PM CDT Thu May 9 2019

TXC373-407-100130-
/O.CON.KHGX.SV.W.0089.000000T0000Z-190510T0130Z/
San Jacinto TX-Polk TX-
803 PM CDT Thu May 9 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR CENTRAL SAN JACINTO AND SOUTHWESTERN POLK COUNTIES...

At 802 PM CDT, a severe thunderstorm was located over Onalaska, or 11
miles northwest of Livingston, moving north at 10 mph.

HAZARD...Golf ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.

Locations impacted include...
Livingston, Onalaska, Point Blank, Lake Livingston State Park and
West Livingston.
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Ptarmigan
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srainhoutx wrote: Thu May 09, 2019 8:25 pm
Texashawk wrote: Thu May 09, 2019 8:23 pm Are these storms going to diminish with loss of night time heating or are they going to go all night?
No. We are expecting this activity to probably increase a bit as the activity to our SW and West make their way NE and East. Long night ahead.
Some of the most intense rains have fallen at night like Thrall 1921, Amelia, Claudette, October 1994, Allison, Memorial Day 2015, Tax Day 2016, and Harvey.
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art3 wrote: Thu May 09, 2019 8:32 pm Wondering if we in meyerland area face the fate of w houston in a bit-
Can't say. We're in a 'now-casting' mode. Sorry.
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DoctorMu
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srainhoutx wrote: Thu May 09, 2019 8:25 pm
Texashawk wrote: Thu May 09, 2019 8:23 pm Are these storms going to diminish with loss of night time heating or are they going to go all night?
No. We are expecting this activity to probably increase a bit as the activity to our SW and West make their way NE and East. Long night ahead.
Area of covering is expanding while the line remains stationary over NW Houston, NW Harris - from Cotulla to Livingston. Flooding is imminent. Stay indoors, especially as night has fallen. Don't drive on these streets underneath this nearly stationary band.
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srainhoutx
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HCFCD‏Verified account @hcfcd · 23s24 seconds ago
High rainfall in West/NW Harris County. We encourage drivers to stay off roads. #houwx #hounews @jefflindner1

Attachments
05092019 HCFCD D6KxtAlW4AA1jUi.png
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey

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Ptarmigan wrote: Thu May 09, 2019 8:37 pm
srainhoutx wrote: Thu May 09, 2019 8:25 pm
Texashawk wrote: Thu May 09, 2019 8:23 pm Are these storms going to diminish with loss of night time heating or are they going to go all night?
No. We are expecting this activity to probably increase a bit as the activity to our SW and West make their way NE and East. Long night ahead.
Some of the most intense rains have fallen at night like Thrall 1921, Amelia, Claudette, October 1994, Allison, Memorial Day 2015, Tax Day 2016, and Harvey.
Aren't those systems different, tropical with circulation vs cold front convergence or does it not matter?
Ounce
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BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Houston/Galveston TX
813 PM CDT Thu May 9 2019

The National Weather Service in League City has issued a

* Severe Thunderstorm Warning for...
North central Fort Bend County in southeastern Texas...
West Harris County in southeastern Texas...

* Until 900 PM CDT.

* At 812 PM CDT, a severe thunderstorm was located over Cinco Ranch,
or near Pecan Grove, moving northeast at 15 mph.

HAZARD...Golf ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect
damage to roofs, siding, windows, and vehicles.

* Locations impacted include...
Katy, Mission Bend, Eldridge / West Oaks, southwestern Addicks Park
Ten, Pecan Grove, Spring Branch West, Fulshear, Westchase, Cinco
Ranch, Briar Forest, Four Corners, Alief, Sharpstown, Mid West,
Addicks and Memorial.
Ounce
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BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Houston/Galveston TX
808 PM CDT Thu May 9 2019

The National Weather Service in League City has issued a

* Severe Thunderstorm Warning for...
Southeastern Trinity County in southeastern Texas...
North central San Jacinto County in southeastern Texas...
Northwestern Polk County in southeastern Texas...

* Until 845 PM CDT.

* At 807 PM CDT, a severe thunderstorm was located near Onalaska, or
13 miles northwest of Livingston, moving north at 20 mph.

HAZARD...Tennis ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect
damage to roofs, siding, windows, and vehicles.

* Locations impacted include...
Onalaska and Groveton.
Ounce
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Severe Weather Statement
National Weather Service Houston/Galveston TX
803 PM CDT Thu May 9 2019

TXC373-407-100130-
/O.CON.KHGX.SV.W.0089.000000T0000Z-190510T0130Z/
San Jacinto TX-Polk TX-
803 PM CDT Thu May 9 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR CENTRAL SAN JACINTO AND SOUTHWESTERN POLK COUNTIES...

At 802 PM CDT, a severe thunderstorm was located over Onalaska, or 11
miles northwest of Livingston, moving north at 10 mph.

HAZARD...Golf ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.

Locations impacted include...
Livingston, Onalaska, Point Blank, Lake Livingston State Park and
West Livingston.
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srainhoutx
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New Severe Thunderstorm Watch may be necessary for Coastal tier of Counties...
05102019 mcd0605.gif
Mesoscale Discussion 0605
NWS Storm Prediction Center Norman OK
0826 PM CDT Thu May 09 2019

Areas affected...portions of southern Texas to the Upper Texas Coast
vicinity

Concerning...Severe Thunderstorm Watch 158...159...

Valid 100126Z - 100300Z

The severe weather threat for Severe Thunderstorm Watch 158, 159
continues.

SUMMARY...Large hail will continue to be the main concern with
severe convection across parts of southern and southeast TX this
evening. Storms may organize into a bowing line segment later
tonight, increasing the threat for damaging winds.

DISCUSSION...Multiple severe storms producing large hail, some 2
inches or great in diameter, are ongoing this evening along
pre-frontal convergence band and outflow boundaries. Given a very
moist environment and rather weak low level flow, it is expected
that eventually upscale growth should occur and one or more bowing
segments should track toward the coast. Once convection transitions
from the current semi-discrete mode to more linear convection, an
increasing threat for damaging wind will be possible, especially if
an adequate cold pool is generated. Given expected trends, counties
along the Gulf coast in WFOs CRP and HOU may need to be added to
ongoing severe thunderstorm watches 158 and 159. Temporal extension
and/or a new watch may also become necessary and will be addressed
as needed depending on trends over the next couple of hours.

..Leitman.. 05/10/2019

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...LCH...HGX...CRP...EWX...BRO...
Carla/Alicia/Jerry(In The Eye)/Michelle/Charley/Ivan/Dennis/Katrina/Rita/Wilma/Humberto/Ike/Harvey

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jasons2k
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It looks like this cluster is about to form a firm southern flank and then ever so slowly slowly march SE...something to watch for.
CAK
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srainhoutx wrote: Thu May 09, 2019 8:25 pm
Texashawk wrote: Thu May 09, 2019 8:23 pm Are these storms going to diminish with loss of night time heating or are they going to go all night?
No. We are expecting this activity to probably increase a bit as the activity to our SW and West make their way NE and East. Long night ahead.
Will that be the progression of this storm, exiting to our east eventually or are we expecting it to stall out?
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