Alert archive / Texas / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 46, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 4, 2008, 2:30 PM CDT for Liberty County, Texas. It was in force for 31 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 4, 2008, 2:30 PM CDT (19:30 UTC)
- Expired
- Apr 4, 2008, 3:01 PM CDT
- In force
- 31 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
County Liberty County, TX
The radar
The Houston radar (KHGX), 80 km from the middle of the area, began a volume at 19:31 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.5 hours before the alert went out and 155 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
- 900 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 619 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.8
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 4, 10:33 AM CDT, 3 hours 57 minutes earlier.
Area forecast discussion, Apr 4, 10:33 AM CDT, 3 hours 57 minutes before
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</html>Hazardous weather outlook, Apr 4, 4:11 AM CDT, 10 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 411 AM CDT FRI APR 4 2008 TXZ163-164-176>179-195>200-210>214-226-227-235>238-051200- AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND- GALVESTON-GRIMES-HARRIS-HOUSTON-JACKSON-LIBERTY-MADISON-MATAGORDA- MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER-WASHINGTON- WHARTON- 411 AM CDT FRI APR 4 2008 ...SLIGHT RISK OF SEVERE THUNDERSTORMS FOR THE NORTHEAST PORTIONS OF SOUTHEAST TEXAS TODAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS WILL MOVE ACROSS SOUTHEAST TEXAS TODAY. THIS ACTIVITY WILL BE MOVING INTO A MORE STABLE ENVIRONMENT WITH A WARM LAYER OF AIR ALOFT LIMITING STORM INTENSITY. HOWEVER...THERE COULD STILL BE SOME STRONG TO SEVERE STORMS MAINLY NORTH AND EAST OF A LINE FROM MADISONVILLE TO CONROE TO MOSS HILL. THE PRIMARY SEVERE WEATHER THREAT WILL BE STRONG DAMAGING WINDS AND LARGE HAIL. THE FRONT AND ASSOCIATED SHOWERS AND THUNDERSTORMS WILL PUSH EAST OF THE AREA LATER THIS AFTERNOON AND EARLY THIS EVENING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS POSSIBLE THIS MORNING THROUGH THIS AFTERNOON.
In the hours before
Local storm report, Apr 4, 1:12 PM CDT, 1 hour 18 minutes before
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</html>Local storm report, Apr 4, 2:10 PM CDT, 20 minutes before
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</html>Local storm report, Apr 4, 2:11 PM CDT, 19 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 4, 9:01 AM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes, Madison | 59 min |
| Apr 4, 9:14 AM CDT | Severe Thunderstorm Warning | HGX | Brazos, Burleson | 49 min |
| Apr 4, 9:28 AM CDT | Severe Thunderstorm Warning | HGX | Brazos, Burleson, Washington | 47 min |
| Apr 4, 9:37 AM CDT | Severe Thunderstorm Warning | HGX | Houston, Madison, Trinity, Walker | 38 min |
| Apr 4, 9:53 AM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes, Madison, Walker | 52 min |
| Apr 4, 10:06 AM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes, Montgomery | 39 min |
| Apr 4, 10:45 AM CDT | Severe Thunderstorm Warning | HGX | Grimes, Montgomery, San Jacinto, Trinity, Walker | 45 min |
| Apr 4, 1:10 PM CDT | Severe Thunderstorm Warning | HGX | Liberty, Montgomery, Polk, San Jacinto | 50 min |
| Apr 4, 1:56 PM CDT | Severe Thunderstorm Warning | HGX | Liberty, Polk | 34 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2008Every severe thunderstorm warning in 2008
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; radar from the NEXRAD Level II archive.