Alert archive / Texas / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 21, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Mar 14, 2007, 12:26 PM CDT for Brazoria County, Matagorda County, Texas. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Mar 14, 2007, 12:26 PM CDT (17:26 UTC)
- Expired
- Mar 14, 2007, 1:00 PM CDT
- In force
- 34 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
Counties Brazoria County, TX, Matagorda County, TX
The radar
The Houston radar (KHGX), 95 km from the middle of the area, began a volume at 17:26 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 |
|---|---|---|---|
| Mar 14, 10:34 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 5.4 hours before the alert went out and 200 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
- 1516 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 463 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 241 m²/s²
- 0-3 km storm-relative helicity
- 376 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KHGX 141726 SVRHGX TXC039-321-141800- /O.NEW.KHGX.SV.W.0021.070314T1726Z-070314T1800Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1226 PM CDT WED MAR 14 2007 THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MATAGORDA COUNTY IN SOUTHEAST TEXAS BRAZORIA COUNTY IN SOUTHEAST TEXAS * UNTIL 100 PM CDT * AT 1217 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE HAIL. THIS STORM WAS LOCATED NEAR MARKHAM...MOVING EAST AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... VAN VLECK... SWEENY... WILD PEACH VILLAGE... WEST COLUMBIA... THIS STORM MAY PRODUCE LARGE DAMAGING HAIL...RESULTING IN EXTENSIVE PROPERTY DAMAGE OR SERIOUS INJURY. AVOID WINDOWS AND TAKE COVER NOW A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT WEDNESDAY EVENING FOR SOUTHEAST TEXAS. PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE... OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. LAT...LON 2903 9609 2886 9603 2894 9559 2916 9566 $$
1 follow-up statement
000
WWUS54 KHGX 141801
SVSHGX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1258 PM CDT WED MAR 14 2007
TXC015-473-477-141830-
/O.CON.KHGX.SV.W.0022.000000T0000Z-070314T1830Z/
WASHINGTON TX-WALLER TX-AUSTIN TX-
1258 PM CDT WED MAR 14 2007
...A SEVERE THUNDERSTORM WARNING CONTINUES FOR AUSTIN...WALLER AND
WASHINGTON COUNTIES UNTIL 130 PM CDT...
AT 1258 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 396 MILES
SOUTHEAST OF SARITA...MOVING NORTHEAST AT 45 MPH.
THERE IS ANOTHER STORM THAT IS TRAVELING EAST AT 30 MPH OUT OF
SOUTHEASTERN COLORADO COUNTY THAT WILL ENTER SOUTHERN AUSTIN COUNTY
IN THE NEXT 15 MINUTES. THIS STORM MAY PRODUCE HAIL TO NICKEL SIZE
AND WINDS GUSTING TO OVER 50 MPH. LOCATIONS IMPACTED INCLUDE
SOUTHERN RURAL AUSTIN COUNTY.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DANGEROUS WINDS AND LARGE DAMAGING HAIL THAT CAN
RESULT IN EXTENSIVE PROPERTY DAMAGE OR SERIOUS INJURY. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT
AWAY FROM WINDOWS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM CDT
WEDNESDAY EVENING FOR SOUTHEAST TEXAS.
PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 3032 9614 3031 9610 3022 9611 3024 9581
3020 9581 3013 9589 3014 9597 3009 9595
2984 9624 2995 9639 3010 9621 3032 9624
3038 9616
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 13, 7:29 PM CDT | Severe Thunderstorm Warning | HGX | Colorado, Wharton | 31 min |
| Mar 13, 8:23 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend | 52 min |
| Mar 13, 9:17 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend, Harris | 43 min |
| Mar 13, 10:02 PM CDT | Tornado Warning | HGX | Harris, Montgomery | 28 min |
| Mar 13, 10:12 PM CDT | Special Marine Warning | HGX | 63 min | |
| Mar 13, 10:16 PM CDT | Special Marine Warning | HGX | 119 min | |
| Mar 14, 12:51 AM CDT | Special Marine Warning | HGX | 114 min | |
| Mar 14, 1:50 AM CDT | Special Marine Warning | HGX | 85 min | |
| Mar 14, 2:59 AM CDT | Special Marine Warning | HGX | 91 min | |
| Mar 14, 9:37 AM CDT | Severe Thunderstorm Warning | HGX | Jackson, Wharton | 38 min |
| Mar 14, 10:05 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria | 40 min |
| Mar 14, 10:17 AM CDT | Severe Thunderstorm Warning | HGX | Colorado, Wharton | 43 min |
| Mar 14, 10:33 AM CDT | Special Marine Warning | HGX | 57 min | |
| Mar 14, 10:41 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria | 49 min |
| Mar 14, 10:53 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston, Harris | 37 min |
| Mar 14, 11:26 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston | 34 min |
| Mar 14, 11:30 AM CDT | Special Marine Warning | HGX | 45 min | |
| Mar 14, 11:38 AM CDT | Severe Thunderstorm Warning | HGX | Washington | 52 min |
| Mar 14, 11:41 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria | 34 min |
| Mar 14, 12:01 PM CDT | Special Marine Warning | HGX | 59 min | |
| Mar 14, 12:15 PM CDT | Special Marine Warning | HGX | 90 min | |
| Mar 14, 12:34 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Waller, Washington | 56 min |
| Mar 14, 12:44 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Grimes | 31 min |
| Mar 14, 1:03 PM CDT | Special Marine Warning | HGX | 117 min | |
| Mar 14, 1:23 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend | 37 min |
| Mar 14, 2:20 PM CDT | Special Marine Warning | HGX | 55 min | |
| Mar 14, 2:27 PM CDT | Special Marine Warning | HGX | 93 min | |
| Mar 14, 2:56 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Harris | 49 min |
| Mar 14, 3:12 PM CDT | Severe Thunderstorm Warning | HGX | Chambers | 48 min |
| Mar 14, 3:20 PM CDT | Special Marine Warning | HGX | 85 min | |
| Mar 14, 4:39 PM CDT | Special Marine Warning | HGX | 96 min | |
| Mar 14, 4:45 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston, Harris | 45 min |
| Mar 14, 5:07 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Galveston | 53 min |
| Mar 14, 6:02 PM CDT | Special Marine Warning | HGX | 88 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2007Every severe thunderstorm warning in 2007
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.