October 2015 - Severe Storms/Moderate Risk Excessive Rainfal

General Weather Discussions and Analysis
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Houston Transtar...

US-90 ALTERNATE Eastbound At SH-99 GRAND PARKWAY - High Water - Status: Verified at 3:28 AM - Lanes Affected: All Mainlanes

IH-610 WEST LOOP Southbound At BELLAIRE BLVD - High Water - Status: Verified at 3:31 AM - Lanes Affected: 4 Frontage Road Lane(s)
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According to Jeff Lindner...

Over 5 inches of rainfall on upper Sims Bayou. 5.56in on Bryas Bayou in Meyerland...Major street flooding.
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HCFD...

Storms have dumped almost 6 inches of rain over parts of south Harris County in past 2 hours - bayous are responding.
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Houston Transtar...

SH-225 Westbound At RICHEY ST - High Water - Status: Verified at 3:34 AM - Lanes Affected: 4 Frontage Road Lane(s)
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Harris County OHSEM has moved to Level 3 Increased Readiness.
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Jeff Lindner...

Flash Flood event unfolding over SC Harris County. Major street flooding in progress. Stay where you are at.
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Harris Gully Box Culvert in the Texas Medical Center has passed 13 feet at this time.

http://fas3.flood-alert.org/#Bayou%20Ca ... %20(large)
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Avoid I-10 in both directions at Houston Ave due to high water affecting all mainlanes at the moment.
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There still is a line of thunderstorms moving through both the Austin and San Antonio metro areas as this time. This line of storms should hold together and move into Southeast Texas in the next few hours.
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HCFCD Tweet...

harriscountyfws.org shows Brays Bayou at Lawndale over top of banks
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Flash Flood Warning for Chambers, Harris, Liberty and Montgomery County until 7:00am Saturday.
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Jeff Lindner...

Numerous water rescues in progress in City of Houston.
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Jeff Lindner...

Water is likely getting close to some homes in SW Houston due to the intense rainfall rate.
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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
258 AM CDT SAT OCT 31 2015

.DISCUSSION...
SHOWERS AND THUNDERSTORMS HAVE BEEN INCREASING IN BOTH COVERAGE AND
INTENSITY ACROSS SOUTHEAST TEXAS EARLY THIS MORNING. ACTIVITY HAS
BEEN TRAINING ACROSS PARTS OF THE AREA...ESPECIALLY FROM NORTHERN
MATAGORDA COUNTY NORTHEASTWARD ACROSS THE EASTERN HALF OF FORT BEND
COUNTY...THE HOUSTON AREA...AND ACROSS LIBERTY COUNTY. RAINFALL RATES
OF 2 TO 4 INCHES PER HOUR ARE OCCURRING WITH THE STRONGER STORMS AND
ASSOCIATED TRAINING...AND THIS WILL LEAD TO FLASH FLOODING. THE FLASH
FLOOD WATCH REMAINS IN EFFECT UNTIL 1 PM. IN ADDITION TO THE HEAVY
RAIN...THE POTENTIAL EXISTS FOR SOME STRONG/SEVERE STORMS TO DEVELOP
WITH DAMAGING WINDS AND ISOLATED TORNADOES THE MAIN SEVERE WEATHER
THREAT. STILL EXPECTING RAINS TO COME TO AN END FROM WEST TO EAST
AS THE DAY PROGRESSES TODAY...BUT THERE COULD BE LINGERING SHOWERS
ACROSS THE SOUTHEASTERN PORTIONS OF THE AREA DURING THE LATE AFTERNOON
THROUGH EARLY EVENING HOURS. WITH MID/UPPER LEVEL LOW PRESSURE SLOWLY
WORKING ITS WAY EASTWARD ACROSS THE STATE TONIGHT AND ON SUNDAY...CANNOT
RULE OUT THE POSSIBILITY OF SOME SHOWERS AND/OR THUNDERSTORM DEVELOPMENT
WITH THE GREATEST CHANCES PROBABLY IN OUR FAR NORTHEAST COUNTIES.
ONCE THE LOW MOVES OUT OF THE AREA...WE WILL SEE A COUPLE OF QUIET
DAYS WITH LOWS GENERALLY IN THE 50S AND HIGHS GENERALLY IN THE 70S.
WARMER TEMPERATURES AND A CHANCE OF RAIN CAN BE EXPECTED FOR THE
SECOND HALF OF THE WEEK AS ONSHORE WINDS RETURN TO THE AREA AND
MOISTURE LEVELS RISE ONCE AGAIN. THE NEXT COLD FRONT IS EXPECTED
TO MOVE INTO THE AREA NEXT WEEKEND. 42
&&

.MARINE...
THE ONSHORE PRESSURE GRADIENT WILL REMAIN TIGHT ENOUGH THIS MORNING
TO GENERALLY PRODUCE 20 TO 25 KNOT...GUSTING TO 35 KNOT...OFFSHORE
WINDS. ONCE THE GALE WARNING FALLS OFF JUST BEFORE SUNRISE...GULF
ADVISORY CONDITIONS WILL PERSIST THROUGH THE MORNING...CAUTION FLAGS
FOR BOTH BAYS. AS THE SOUTHERN TEXAS SURFACE LOW LIFTS UP ACROSS THE
TEXAS COASTLINE THROUGH THE DAY...OVERALL WINDS AND SEAS WILL WEAKEN
IN RESPONSE TO THE WEAKER GRADIENT. AREAWIDE RAIN WITH THUNDERSTORMS
WILL QUICKLY STRENGTHEN WINDS AND CHURN UP ROUGH SEAS AS LATE AS
EARLY SUNDAY. ONCE THIS LOW MOVES NORTHEAST SUNDAY...A TRAILING COLD
FRONT WILL VEER WINDS AROUND TO OFFSHORE. THESE LIGHT NORTHERLIES
WILL VEER BACK AROUND TO ONSHORE TUESDAY...OR ONCE EASTERN U.S. HIGH
PRESSURE ESTABLISHES ITSELF AND EXPANDS BACK ACROSS THE NORTHERN
GULF WATERS. WEAK SOUTHWESTERN DISTURBANCES RIDING UP THE WESTERN
PERIPHERY OF A GULF-CENTERED MID-UPPER LEVEL RIDGE WILL INCREASE
WEDNESDAY`S RAIN CHANCES. THE NEXT CHANCE OF PRECIPITATION WILL BE
FRIDAY AHEAD OF THE NEXT COLD FRONTAL PASSAGE.
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Jeff Lindner...

Brays Bayou at Lawndale overbanks. Street flooding likely near the channel. Must rise another 3 ft to get into homes.
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Tornado Warning for Brazoria County in TX until 4:45am CDT
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I just got to get some sleep now so I'll let someone else pick up the baton from here.
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djjordan
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BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
414 AM CDT SAT OCT 31 2015

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* TORNADO WARNING FOR...
CENTRAL BRAZORIA COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 445 AM CDT

* AT 413 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED OVER ANGLETON...MOVING NORTHEAST AT 40 MPH.

HAZARD...TORNADO.

SOURCE...RADAR INDICATED ROTATION.

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED.
DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE
DAMAGE IS LIKELY.

* LOCATIONS IMPACTED INCLUDE...
LAKE JACKSON...ANGLETON...CLUTE...RICHWOOD...DANBURY...IOWA
COLONY...HOLIDAY LAKES...BAILEY`S PRAIRIE...LIVERPOOL...BONNEY...
CHOCOLATE BAYOU AND ROSHARON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES ARE EXTREMELY DIFFICULT TO SEE AND CONFIRM AT NIGHT. DO NOT
WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW.
~~~When Thunder Roars Go Indoors~~~
~~~Turn Around Don't Drown~~~
~~~Run From The Water, Hide From The Wind~~~
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djjordan
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Harris County Flood Control reports Brays Bayou at Lawndale in southeast #Houston is out of its banks.

Just got home 30 minutes ago....

An easy 4-6 inches of rainfall in my area in the past 3 hours. Our drainage bayou is pretty full.
~~~When Thunder Roars Go Indoors~~~
~~~Turn Around Don't Drown~~~
~~~Run From The Water, Hide From The Wind~~~
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djjordan
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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
437 AM CDT SAT OCT 31 2015

TXZ195>197-311100-
BURLESON TX-WASHINGTON TX-BRAZOS TX-
437 AM CDT SAT OCT 31 2015

...SIGNIFICANT WEATHER ADVISORY FOR BRAZOS...BURLESON AND WESTERN
WASHINGTON COUNTIES UNTIL 600 AM CDT...

AT 433 AM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR ROSEBUD TO 6 MILES
WEST OF FEDOR TO NEAR KINGSBURY...AND MOVING EAST AT 30 MPH. THIS
LINE IS EXPECTED TO MOVE INTO THE WESTERN PARTS OF BURLESON...
BRAZOS...AND WASHINGTON COUNTIES BETWEEN 445 AM AND 545 AM.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
COLLEGE STATION...BRYAN...CALDWELL...SOMERVILLE...SNOOK...KURTEN...
BURTON...WIXON VALLEY...KYLE FIELD...LAKE SOMERVILLE DAM...
WELLBORN...DEANVILLE...CHRIESMAN...QUARRY AND LYONS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO BRIEF LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH
FLOODED ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
~~~When Thunder Roars Go Indoors~~~
~~~Turn Around Don't Drown~~~
~~~Run From The Water, Hide From The Wind~~~
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