Alert archive / Texas / Severe Thunderstorm Warnings in 2006
Severe Thunderstorm Warning 177, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Dec 29, 2006, 4:40 PM CST for Burleson County, Washington County, Texas. It was in force for 50 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
- Dec 29, 2006, 4:40 PM CST (22:40 UTC)
- Expired
- Dec 29, 2006, 5:30 PM CST
- In force
- 50 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
Counties Burleson County, TX, Washington County, TX
The radar
The Ft Hood radar (KGRK), 93 km from the middle of the area, began a volume at 22:42 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Dec 29, 12:42 PM CST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 10.7 hours before the alert went out and 285 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
- 13 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 648 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 231 m²/s²
- 0-3 km storm-relative helicity
- 256 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Dec 29, 3:45 PM CST, 55 minutes earlier.
Area forecast discussion, Dec 29, 3:45 PM CST, 55 minutes before
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</html>Hazardous weather outlook, Dec 29, 2:21 PM CST, 2 hours 19 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 221 PM CST FRI DEC 29 2006 TXZ163-164-176>179-195>200-210>214-226-227-235>238-301300- 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- 221 PM CST FRI DEC 29 2006 ...THERE IS A SLIGHT TO MODERATE RISK OF SEVERE THUNDERSTORMS AND LOCALLY HEAVY RAINFALL ACROSS SOUTHEAST TEXAS THIS AFTERNOON THROUGH SATURDAY MORNING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A NOW A SLIGHT TO MODERATE RISK OF SEVERE THUNDERSTORMS AND LOCALLY HEAVY RAINFALL ACROSS SOUTHEAST TEXAS THIS AFTERNOON THROUGH EARLY SATURDAY MORNING. THE NEW MODERATE RISK AREA IS ALONG AND WEST OF A LINE FROM MADISONVILLE TO PRAIRIE VIEW TO COLUMBUS. SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP AND INTENSIFY ACROSS THE AREA THIS AFTERNOON...AND THIS TREND IS EXPECTED TO PERSIST INTO THE OVERNIGHT HOURS. AS A STRONG STORM SYSTEM BEGINS TO MOVE INTO WEST TEXAS THIS AFTERNOON...THE AIRMASS ACROSS SOUTHEAST TEXAS IS EXPECTED TO BECOME INCREASINGLY UNSTABLE. SOME OF THE STRONGER THUNDERSTORMS MAY BECOME SEVERE. STRONG DAMAGING WINDS AND ISOLATED TORNADOES ARE THE PRIMARY SEVERE WEATHER THREAT. A SQUALL LINE IS THEN EXPECTED TO DEVELOP TONIGHT TO THE WEST OF OUR AREA AND MOVES EASTWARD INTO OUR MORE MORE MOIST AND INCREASINGLY UNSTABLE ATMOSPHERE. THE THREAT OF SEVERE WEATHER WILL INCREASE TONIGHT WITH DAMAGING WINDS BECOMING THE PRIMARY SEVERE WEATHER THREAT. ISOLATED TORNADOES AND LARGE HAIL WILL ALSO BE POSSIBLE. IN ADDITION TO THE SEVERE WEATHER THREAT...THERE IS A THREAT FOR LOCALLY HEAVY RAINFALL THIS AFTERNOON THROUGH EARLY SATURDAY MORNING. RAINFALL AMOUNTS THIS AFTERNOON ARE EXPECTED TO AVERAGE UNDER 1/2 INCH DUE TO FAST STORM SPEEDS. HIGHER AMOUNTS...POSSIBLE BETWEEN 1 AND 2 INCHES...WILL BE POSSIBLE WHERE TRAINING DEVELOPS. RAINFALL AMOUNTS TONIGHT THROUGH SATURDAY MORNING ARE EXPECTED TO AVERAGE 1 TO 2 INCHES WITH ISOLATED 3 TO 5 INCH TOTALS POSSIBLE. LOCALIZED STREET FLOODING CAN BE EXPECTED...ESPECIALLY ACROSS THE NORMAL FLOOD PRONE AREAS. THE SEVERE WEATHER AND LOCALLY HEAVY RAINFALL THREAT IS EXPECTED TO COME TO AN END BEFORE NOON ON SATURDAY MORNING. .DAYS TWO THROUGH SEVEN...SATURDAY AFTERNOON THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON THROUGH TONIGHT. EMERGENCY MANAGEMENT SHOULD CLOSELY MONITOR THE LATEST WEATHER INFORMATION THIS AFTERNOON THROUGH SATURDAY MORNING FOR POSSIBLE WATCHES OR WARNINGS.
In the hours before
Local storm report, Dec 29, 3:58 PM CST, 42 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 |
|---|---|---|---|---|
| Dec 29, 2:59 PM CST | Tornado Warning | HGX | Brazos, Grimes, Madison | 46 min |
| Dec 29, 3:01 PM CST | Tornado Warning | HGX | Burleson, Washington | 29 min |
| Dec 29, 3:33 PM CST | Severe Thunderstorm Warning | HGX | Brazos | 27 min |
| Dec 29, 3:46 PM CST | Flood Watch | HGX | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more | 14 hr |
| Dec 29, 5:30 PM CST | Special Marine Warning | HGX | 60 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2006Every severe thunderstorm warning in 2006
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.