Alert archive / Texas / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 26, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 19, 2015, 3:45 PM CDT for Brazos County, Grimes County, Madison County, Texas. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 19, 2015, 3:45 PM CDT (20:45 UTC)
- Expired
- Apr 19, 2015, 4:15 PM CDT
- In force
- 30 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
Counties Brazos County, TX, Grimes County, TX, Madison County, TX
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 19, 2:31 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 8.8 hours before the alert went out and 261 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 512 J/kg
- Mixed-layer CIN
- -278 J/kg
- Mixed-layer LCL
- 951 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 288 m²/s²
- 0-3 km storm-relative helicity
- 283 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 19, 3:27 PM CDT, 18 minutes earlier.
Area forecast discussion, Apr 19, 3:27 PM CDT, 18 minutes before
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</html>Hazardous weather outlook, Apr 19, 6:49 AM CDT, 8 hours 56 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 649 AM CDT SUN APR 19 2015 TXZ163-164-176>179-195>200-211>213-227-201200- AUSTIN-BRAZOS-BURLESON-FORT BEND-GRIMES-HARRIS-HOUSTON-LIBERTY- MADISON-MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER- WASHINGTON- 649 AM CDT SUN APR 19 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT A COLD FRONT MOVING INTO THE AREA LATE THIS AFTERNOON MAY BRING ISOLATED STRONG TO SEVERE THUNDERSTORMS BETWEEN 2 AND 6 PM. THE PRIMARY THREAT SHOULD BE STRONG GUSTY WINDS AND POSSIBLY SMALL HAIL. RAINFALL TOTALS SHOULD AVERAGE LESS THAN 0.25 INCH WITH ISOLATED AMOUNTS ASSOCIATED WITH THE STRONGER STORMS AROUND 1 INCH. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. GMZ335-355-TXZ210-214-226-236>238-201200- BRAZORIA-CHAMBERS-COLORADO-GALVESTON-GALVESTON BAY-MATAGORDA- WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NM-WHARTON- 649 AM CDT SUN APR 19 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS MAY ARRIVE AFTER 5 PM BRINGING GUSTY NORTHERLY WINDS AND FREQUENT LIGHTNING. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. GMZ330-TXZ235-201200- JACKSON-MATAGORDA BAY- 649 AM CDT SUN APR 19 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. GMZ350-370-375-201200- WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL 20 NM TO 60 NM- WATERS FROM FREEPORT TO THE MATAGORDA SHIP CHANNEL OUT 20 NM- WATERS FROM HIGH ISLAND TO FREEPORT 20 TO 60 NM- 649 AM CDT SUN APR 19 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
In the hours before
Local storm report, Apr 19, 12:12 PM CDT, 3 hours 33 minutes before
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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
301 PM CDT SUN APR 19 2015
TXZ195-192045-
BURLESON TX-
301 PM CDT SUN APR 19 2015
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BURLESON COUNTY...
AT 301 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
DIME BOX...OR 8 MILES EAST OF LEXINGTON...MOVING EAST AT 30 MPH.
UP TO HALF INCH HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE
WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE...
CALDWELL...SOMERVILLE...DEANVILLE AND LYONS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN LEAGUE CITY .
&&
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FOR
SOUTHEASTERN TEXAS.
LAT...LON 3055 9695 3057 9647 3033 9653 3030 9663
3030 9667 3032 9669 3032 9674 3039 9679
3043 9685 3043 9687 3046 9688 3046 9690
3047 9691 3049 9690 3053 9691 3054 9692
TIME...MOT...LOC 2001Z 283DEG 28KT 3044 9686
40Special weather statement, Apr 19, 3:40 PM CDT, 5 minutes before
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</html>The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 8:41 PM CDT | River Flood Warning | HGX | Brazoria | 5 days |
| Apr 18, 8:41 PM CDT | River Flood Warning | HGX | Jackson, Lavaca | 17 hr |
| Apr 18, 8:41 PM CDT | River Flood Warning | HGX | Jackson | 57 hr |
| Apr 18, 9:23 PM CDT | Special Weather Statement | HGX | Brazos, Burleson, Houston, Madison | 52 min |
| Apr 18, 10:15 PM CDT | Special Weather Statement | HGX | Brazos, Grimes, Houston, Madison, Walker, Washington | 60 min |
| Apr 18, 11:04 PM CDT | Special Weather Statement | HGX | Polk, San Jacinto, Trinity | 56 min |
| Apr 18, 11:09 PM CDT | Special Weather Statement | HGX | Austin, Montgomery, Waller | 51 min |
| Apr 18, 11:40 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Polk, San Jacinto, Trinity | 40 min |
| Apr 19, 3:01 PM CDT | Special Weather Statement | HGX | Burleson | 44 min |
| Apr 19, 3:10 PM CDT | Severe Thunderstorm Warning | HGX | Burleson, Washington | 50 min |
| Apr 19, 3:40 PM CDT | Special Weather Statement | HGX | Brazos | 35 min |
| Apr 19, 3:44 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Burleson, Grimes, Washington | 61 min |
| Apr 19, 4:16 PM CDT | Special Weather Statement | HGX | Washington | 44 min |
| Apr 19, 4:22 PM CDT | Special Weather Statement | HGX | Madison | 23 min |
| Apr 19, 4:35 PM CDT | Special Weather Statement | HGX | Washington | 40 min |
| Apr 19, 4:39 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Houston, Madison, Walker | 36 min |
| Apr 19, 4:46 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Harris, Waller, Washington | 44 min |
| Apr 19, 4:50 PM CDT | Severe Thunderstorm Warning | HGX | Burleson, Washington | 25 min |
| Apr 19, 4:59 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Trinity | 31 min |
| Apr 19, 5:10 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Walker | 21 min |
| Apr 19, 5:12 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Harris, Montgomery, Waller | 48 min |
| Apr 19, 5:16 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Trinity, Walker | 29 min |
| Apr 19, 5:29 PM CDT | Special Weather Statement | HGX | Trinity | 31 min |
| Apr 19, 5:32 PM CDT | Special Weather Statement | HGX | Walker | 28 min |
| Apr 19, 5:47 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Walker | 28 min |
| Apr 19, 5:55 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Montgomery, Waller | 65 min |
| Apr 19, 5:59 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Harris, Montgomery, Waller | 31 min |
| Apr 19, 6:13 PM CDT | Special Weather Statement | HGX | Waller | 47 min |
| Apr 19, 6:16 PM CDT | Special Weather Statement | HGX | Walker | 29 min |
| Apr 19, 6:21 PM CDT | Special Weather Statement | HGX | Austin | 24 min |
| Apr 19, 6:27 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Colorado, Waller | 33 min |
| Apr 19, 6:31 PM CDT | Areal Flood Advisory | HGX | Harris | 119 min |
| Apr 19, 6:38 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Liberty, Montgomery | 37 min |
| Apr 19, 6:41 PM CDT | Tornado Warning | HGX | Harris, Liberty | 34 min |
| Apr 19, 6:47 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Colorado, Waller | 28 min |
| Apr 19, 6:58 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 47 min |
| Apr 19, 6:59 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Fort Bend, Harris, Waller | 31 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2015Every severe thunderstorm warning in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.