April 2016 Recap: Regional Flood/Severe Weather

General Weather Discussions and Analysis
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Texashawk
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Considering this isn't even supposed to be the main event - we may be witnessing a historical event over these next 2-3 days. Incredible.
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djjordan
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BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
338 AM CDT MON APR 18 2016

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* TORNADO WARNING FOR...
NORTH CENTRAL HARRIS COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 415 AM CDT

* AT 338 AM CDT...SEVERE THUNDERSTORMS CAPABLE OF PRODUCING BOTH
TORNADOES AND EXTENSIVE STRAIGHT LINE WIND DAMAGE WERE LOCATED NEAR
WILLOWBROOK...OR NEAR GREATER GREENSPOINT...MOVING EAST AT 20 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...
GREATER GREENSPOINT...SPRING...ALDINE AND WILLOWBROOK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS OR IN
A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW!

THIS CLUSTER OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A BUILDING.
~~~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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The following School Districts that I know of thus far are closed today......

Cypress Fairbanks ISD, Waller ISD and Royal ISD, Hempstead ISD

Residents in neighborhoods along Cypress Creek Parkway reporting water in homes and streets.
Last edited by djjordan on Mon Apr 18, 2016 4:06 am, edited 3 times in total.
~~~When Thunder Roars Go Indoors~~~
~~~Turn Around Don't Drown~~~
~~~Run From The Water, Hide From The Wind~~~
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DoctorMu
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The 2 mesos have fused...moving E now along I-10 slowly.

Near Biblical proportion accumulation if situation does not abate. I hope there are more closures on the NW side.
Last edited by DoctorMu on Mon Apr 18, 2016 4:04 am, edited 1 time in total.
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DoctorMu
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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
356 AM CDT MON APR 18 2016

.DISCUSSION...
SEVERE...HISTORIC FLOOD EVENT ONGOING. SEVERAL FLASH FLOOD
WARNINGS AND FLASH FLOOD EMERGENCIES IN EFFECT FROM SLOW MOVING
BAND OF THUNDERSTORMS. MULTIPLE HIGH WATER RESCUES REPORTED AND
STRUCTURES BEING FLOODED. UNFORTUNATELY BAND OF THUNDERSTORMS TO
IMPACT AREAS ALREADY HAVING RECEIVED HEAVY RAIN FOR POTENTIALLY SEVERAL
MORE HOURS.

WORST CASE SCENARIO AS DEEP MOISTURE ADVECTING IN OFF THE GULF
AND BEING FOCUSSED ALONG E TO W BAND OF THUNDERSTORMS WITH VERY
LITTLE MOVEMENT. MODELS HAVE STRUGGLED TO CAPTURE PLACEMENT AND
TIMING OF CONVECTION AND DIFFICULT GOING FORWARD AS WELL. NOT MUCH
CHANGE IN THE PATTERN IS EXPECTED THROUGH TUESDAY. THROUGH TUESDAY
EXPECT ADDITIONAL ROUNDS OF HEAVY RAIN WHICH WILL ONLY EXACERBATE
FLOODING ALREADY ONGOING. DIFFICULT TO TIME THINGS BUT
THUNDERSTORM COMPLEXES WILL GENERALLY BE SLOW MOVING. CONCERN IS
THEY WILL OCCUR IN SIMILAR AREAS. HAVE HAD TO RAISE POPS WEDNESDAY
AS WELL AS MODELS SHOWING ANOTHER VORT LOBE PIVOTING AROUND UPPER
LOW LIKELY BRINGING MORE SHOWERS AND THUNDERSTORMS. REALLY DONT
DRY OUT UNTIL POSSIBLY FRIDAY AS MODELS SUGGEST RIDGING AT SURFACE
AND ALOFT. 46
Last edited by DoctorMu on Mon Apr 18, 2016 4:05 am, edited 1 time in total.
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djjordan
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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
356 AM CDT MON APR 18 2016

.DISCUSSION...
SEVERE...HISTORIC FLOOD EVENT ONGOING. SEVERAL FLASH FLOOD
WARNINGS AND FLASH FLOOD EMERGENCIES IN EFFECT FROM SLOW MOVING
BAND OF THUNDERSTORMS. MULTIPLE HIGH WATER RESCUES REPORTED AND
STRUCTURES BEING FLOODED. UNFORTUNATELY BAND OF THUNDERSTORMS TO
IMPACT AREAS ALREADY HAVING RECEIVED HEAVY RAIN FOR POTENTIALLY SEVERAL
MORE HOURS.

WORST CASE SCENARIO AS DEEP MOISTURE ADVECTING IN OFF THE GULF
AND BEING FOCUSSED ALONG E TO W BAND OF THUNDERSTORMS WITH VERY
LITTLE MOVEMENT. MODELS HAVE STRUGGLED TO CAPTURE PLACEMENT AND
TIMING OF CONVECTION AND DIFFICULT GOING FORWARD AS WELL. NOT MUCH
CHANGE IN THE PATTERN IS EXPECTED THROUGH TUESDAY. THROUGH TUESDAY
EXPECT ADDITIONAL ROUNDS OF HEAVY RAIN WHICH WILL ONLY EXACERBATE
FLOODING ALREADY ONGOING. DIFFICULT TO TIME THINGS BUT
THUNDERSTORM COMPLEXES WILL GENERALLY BE SLOW MOVING. CONCERN IS
THEY WILL OCCUR IN SIMILAR AREAS. HAVE HAD TO RAISE POPS WEDNESDAY
AS WELL AS MODELS SHOWING ANOTHER VORT LOBE PIVOTING AROUND UPPER
LOW LIKELY BRINGING MORE SHOWERS AND THUNDERSTORMS. REALLY DONT
DRY OUT UNTIL POSSIBLY FRIDAY AS MODELS SUGGEST RIDGING AT SURFACE
AND ALOFT. 46
~~~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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Flash Flood Watch reissued until at least Tuesday morning if not longer.

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY MORNING...

THE FLASH FLOOD WATCH CONTINUES FOR

* A PORTION OF SOUTHEAST TEXAS...INCLUDING THE FOLLOWING
AUSTIN...BRAZORIA...BRAZOS...BURLESON...CHAMBERS...COLORADO...
FORT ...BEND...GALVESTON...GRIMES...HARRIS...HOUSTON...
JACKSON...LIBERTY...MADISON...MATAGORDA...MONTGOMERY...POLK...
SAN JACINTO...TRINITY...WALKER...WALLER...WASHINGTON AND
WHARTON.

* THROUGH AT LEAST TUESDAY MORNING. FLOOD WATCH MAY NEED TO BE
EXTENDED IN TIME.

* ROUNDS OF THUNDERSTORMS ARE EXPECTED TO CONTINUE THROUGH THE
WATCH PERIOD AND POSSIBLY BEYOND. HAVE ALREADY SEEN CLOSE TO 16
INCHES MEASURED NEAR THE HARRIS WALLER COUNTY LINE AND NUMEROUS
REPORTS OF HIGH WATER RESCUES AND HOMES FLOODED.

* LIFE THREATENING FLASH FLOODING IS OCCURRING AND EXPECTED TO
CONTINUE OVER PORTIONS OF THE WATCH AREA. STAY TUNED FOR
ADDITIONAL WARNINGS. AVOID TRAVEL IN AND NEAR FLOODED AREAS.
MOST PEOPLE WHO DIE IN FLASH FLOODING DIE IN THEIR VEHICLES. IF
IN A FLOODED AREA STAY WHERE YOU ARE...AT HOME OR WORK. NEVER
DRIVE INTO A FLOODED ROADWAY. TURN AROUND DONT DROWN.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.
~~~When Thunder Roars Go Indoors~~~
~~~Turn Around Don't Drown~~~
~~~Run From The Water, Hide From The Wind~~~
unome
Posts: 3062
Joined: Fri Feb 12, 2010 6:11 pm

djjordan wrote:The following School Districts that I know of thus far are closed today......

Cypress Fairbanks ISD, Waller ISD and Royal ISD, Hempstead ISD

Residents in neighborhoods along Cypress Creek Parkway reporting water in homes and streets.


Houston OEM Verified account
‏@HoustonOEM

Check your school district's Twitter account for updates on status. We've made a list here:
https://twitter.com/HoustonOEM/lists/school-districts
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jasons2k
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Incredible rains and lightning here. Nonstop. Power has been on and off - off again. It's also hailing in the heavier downpours. Wow.
ticka1
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Location: Baytown/Mont Belvieu
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anyone know if Metro park and ride are runnning as normal this morning?
unome
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Joined: Fri Feb 12, 2010 6:11 pm

ticka1 wrote:anyone know if Metro park and ride are runnning as normal this morning?
https://twitter.com/METROHouston/with_replies

METRO Houston ‏@METROHouston 20m20 minutes ago

Due to weather expect delays especially on the North and Northwest sides of town. Route 102 heavily impacted at this time. JG
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djjordan
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Location: Montgomery, Texas
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ticka1 wrote:anyone know if Metro park and ride are runnning as normal this morning?
This is the only thing I've seen from Metro this morning so far off of twitter....

Due to weather expect delays especially on the North and Northwest sides of town. Route 102 heavily impacted at this time. JG
~~~When Thunder Roars Go Indoors~~~
~~~Turn Around Don't Drown~~~
~~~Run From The Water, Hide From The Wind~~~
unome
Posts: 3062
Joined: Fri Feb 12, 2010 6:11 pm

unome wrote:
djjordan wrote:The following School Districts that I know of thus far are closed today......

Cypress Fairbanks ISD, Waller ISD and Royal ISD, Hempstead ISD

Residents in neighborhoods along Cypress Creek Parkway reporting water in homes and streets.


Houston OEM Verified account
‏@HoustonOEM

Check your school district's Twitter account for updates on status. We've made a list here:
https://twitter.com/HoustonOEM/lists/school-districts


Katy & Aldine also closed
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djjordan
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Albeit a slow crawl, Radar trends are suggesting that more of Metro Houston and Downtown may get in on the action within the next hour. Today would be a good day not to go to work or school I'm thinking.
~~~When Thunder Roars Go Indoors~~~
~~~Turn Around Don't Drown~~~
~~~Run From The Water, Hide From The Wind~~~
Andrew
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Rain gauge totals so far shows the largest total in far northwest harris county with 16 inches.
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davidiowx
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Location: Richmond, TX
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Some friends up in the cypress area are sending me pictures of water entering their garage. Cars in the streets are flooded
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djjordan
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Location: Montgomery, Texas
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BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
439 AM CDT MON APR 18 2016

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
NORTH CENTRAL WHARTON COUNTY IN SOUTHEASTERN TEXAS...
SOUTHEASTERN WASHINGTON COUNTY IN SOUTHEASTERN TEXAS...
SOUTHWESTERN HARRIS COUNTY IN SOUTHEASTERN TEXAS...
SOUTHERN WALKER COUNTY IN SOUTHEASTERN TEXAS...
WALLER COUNTY IN SOUTHEASTERN TEXAS...
SOUTHEASTERN GRIMES COUNTY IN SOUTHEASTERN TEXAS...
NORTHERN FORT BEND COUNTY IN SOUTHEASTERN TEXAS...
COLORADO COUNTY IN SOUTHEASTERN TEXAS...
WESTERN LIBERTY COUNTY IN SOUTHEASTERN TEXAS...
SAN JACINTO COUNTY IN SOUTHEASTERN TEXAS...
MONTGOMERY COUNTY IN SOUTHEASTERN TEXAS...
SOUTHWESTERN POLK COUNTY IN SOUTHEASTERN TEXAS...
AUSTIN COUNTY IN SOUTHEASTERN TEXAS...

* UNTIL 900 AM CDT

* AT 432 AM CDT...DOPPLER RADAR AND AUTOMATED RAIN GAUGES INDICATED
THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. 4 TO 7
INCHES OF RAIN HAVE FALLEN WITH AREAS OF 6 TO 16 INCHES OF
RAINFALL. FLASH FLOODING IS ON GOING.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SUGAR LAND...MISSOURI CITY...CONROE...ROSENBERG...STAFFORD...BELLAIRE...
BRENHAM...HUMBLE...WEST UNIVERSITY PLACE...KATY...RICHMOND...GALENA
PARK...TOMBALL...JACINTO CITY...CLEVELAND...JERSEY VILLAGE...DAYTON...
SEALY...HEMPSTEAD AND WILLIS.

ADDITIONAL EXCESSIVE AMOUNTS OF RAINFALL ARE POSSIBLE IN THE WARNED
AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON`T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST
FLOOD DEATHS OCCUR IN VEHICLES. IT IS BEST TO STAY IN PLACE. STAY
OFF ROAD.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS
WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.
~~~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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Location: Montgomery, Texas
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BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
439 AM CDT MON APR 18 2016

...FLASH FLOOD EMERGENCY...

THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
NORTHEASTERN COLORADO COUNTY IN SOUTHEASTERN TEXAS...
WALLER COUNTY IN SOUTHEASTERN TEXAS...
SOUTHEASTERN GRIMES COUNTY IN SOUTHEASTERN TEXAS...
SOUTHWESTERN MONTGOMERY COUNTY IN SOUTHEASTERN TEXAS...
NORTHWESTERN HARRIS COUNTY IN SOUTHEASTERN TEXAS...
AUSTIN COUNTY IN SOUTHEASTERN TEXAS...


* UNTIL 900 AM CDT

* AT 430 AM CDT...DOPPLER RADAR AND RAIN GAUGES INDICATE THAT BETWEEN
8 AND 16 INCHES OF RAIN HAVE FALLEN ACROSS THE FLASH FLOOD EMERGENCY AREA.
FLASH FLOODING IS OCCURRING. ADDITIONAL HEAVY RAINFALL IS EXPECTED.

THIS IS A FLASH FLOOD EMERGENCY. THIS IS A PARTICULARLY DANGEROUS SITUATION.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
KATY...TOMBALL...JERSEY VILLAGE...HEMPSTEAD...PRAIRIE VIEW...BROOKSHIRE...
BELLVILLE...PINEHURST...ADDICKS PARK TEN...THE WOODLANDS...NORTHERN
ELDRIDGE / WEST OAKS...SHELBY...HOCKLEY...WALLER...MAGNOLIA...PINE
ISLAND...SAN FELIPE...STAGECOACH...PATTISON AND INDUSTRY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS AN EXTREMELY DANGEROUS AND LIFE-THREATENING SITUATION. STAY OFF
ROADS IN THIS AREA.

TURN AROUND...DON`T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&
~~~When Thunder Roars Go Indoors~~~
~~~Turn Around Don't Drown~~~
~~~Run From The Water, Hide From The Wind~~~
houstonia
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Pouring rain, thunder and lightning in Sharpstown right now.
Andrew
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Tornado warning just SE of Aldine
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