Alert archive / Texas / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 308, NWS Fort Worth, TX
NWS Fort Worth, TX issued this severe thunderstorm warning at Jun 11, 2009, 6:52 AM CDT for Collin County, Dallas County, Denton County, Texas. It was in force for 53 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
- Jun 11, 2009, 6:52 AM CDT (11:52 UTC)
- Expired
- Jun 11, 2009, 7:45 AM CDT
- In force
- 53 min
- Issued by
- NWS Fort Worth, TX
- Area
- Storm-based polygon
Counties Collin County, TX, Dallas County, TX, Denton County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 70 km from the middle of the area, began a volume at 11:52 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 |
|---|---|---|---|
| Jun 11, 3:11 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 11.9 hours before the alert went out and 50 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
- 22 J/kg
- Mixed-layer CIN
- -617 J/kg
- Mixed-layer LCL
- 792 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- -263 m²/s²
- 0-3 km storm-relative helicity
- 364 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 11, 6:38 AM CDT, 14 minutes earlier.
Area forecast discussion, Jun 11, 6:38 AM CDT, 14 minutes before
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</html>Hazardous weather outlook, Jun 11, 6:21 AM CDT, 31 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FORT WORTH TX 621 AM CDT THU JUN 11 2009 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-121200- MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-YOUNG-JACK-WISE-DENTON-COLLIN- HUNT-DELTA-HOPKINS-STEPHENS-PALO PINTO-PARKER-TARRANT-DALLAS- ROCKWALL-KAUFMAN-VAN ZANDT-RAINS-EASTLAND-ERATH-HOOD-SOMERVELL- JOHNSON-ELLIS-HENDERSON-COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-NAVARRO- FREESTONE-ANDERSON-LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-LIMESTONE- LEON-MILAM-ROBERTSON- 621 AM CDT THU JUN 11 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS. .DAY ONE...TODAY AND TONIGHT. THERE CONTINUES TO BE A CHANCE FOR SEVERE STORMS TODAY AND TONIGHT WITH LARGE HAIL...DAMAGING WINDS...AND FLASH FLOOD THE MAIN THREATS. AN ISOLATED TORNADO IS ALSO POSSIBLE. ANOTHER LINE OF STRONG TO SEVERE STORMS MAY DEVELOP THIS AFTERNOON OR EVENING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. A CHANCE FOR THUNDERSTORMS WILL CONTINUE FRIDAY AND SATURDAY IN THE AFTERNOON AND EVENING HOURS. SEVERE WEATHER WILL BE POSSIBLE WITH ANY STORMS THAT DEVELOP. HEAT INDEX VALUES WILL REACH THE TRIPLE DIGITS IN SCATTERED LOCATIONS BEGINNING THIS WEEKEND AND CONTINUING THROUGH THE WEEK. HEAT INDEX VALUES AT TIMES MAY REACH AS HIGH AS 105 TO 110 DEGREES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUESTED THIS AFTERNOON AND EVENING. 82/JLD
In the hours before
Special weather statement, Jun 11, 5:00 AM CDT, 1 hour 52 minutes before
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</html>Local storm report, Jun 11, 5:23 AM CDT, 1 hour 29 minutes before
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</html>Local storm report, Jun 11, 5:37 AM CDT, 1 hour 15 minutes before
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</html>Local storm report, Jun 11, 6:01 AM CDT, 51 minutes before
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</html>Local storm report, Jun 11, 6:23 AM CDT, 29 minutes before
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</html>The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 7:05 PM CDT | Severe Thunderstorm Warning | FWD | Erath, Hamilton | 55 min |
| Jun 10, 7:07 PM CDT | Severe Thunderstorm Warning | FWD | Ellis, Johnson | 53 min |
| Jun 10, 7:24 PM CDT | Severe Thunderstorm Warning | FWD | Grayson | 55 min |
| Jun 10, 7:31 PM CDT | Severe Thunderstorm Warning | FWD | Comanche | 59 min |
| Jun 10, 7:33 PM CDT | Areal Flood Advisory | FWD | Collin, Dallas | 3 hr |
| Jun 10, 7:36 PM CDT | Severe Thunderstorm Warning | FWD | Kaufman, Rockwall | 39 min |
| Jun 10, 7:44 PM CDT | Severe Thunderstorm Warning | FWD | Fannin, Hunt | 61 min |
| Jun 10, 7:55 PM CDT | Severe Thunderstorm Warning | FWD | Comanche, Hamilton, Mills | 65 min |
| Jun 10, 7:56 PM CDT | Areal Flood Advisory | FWD | Comanche, Erath, Hamilton | 3 hr |
| Jun 10, 7:58 PM CDT | Severe Thunderstorm Warning | FWD | Collin, Rockwall | 17 min |
| Jun 10, 8:00 PM CDT | Severe Thunderstorm Warning | FWD | Ellis, Henderson, Kaufman, Navarro, Van Zandt | 60 min |
| Jun 10, 8:03 PM CDT | Areal Flood Advisory | FWD | Collin, Kaufman, Rockwall | 3 hr |
| Jun 10, 8:05 PM CDT | Areal Flood Advisory | FWD | Ellis | 3 hr |
| Jun 10, 8:06 PM CDT | Severe Thunderstorm Warning | FWD | Delta, Fannin, Hopkins, Lamar, Rains, Van Zandt | 84 min |
| Jun 10, 8:33 PM CDT | Severe Thunderstorm Warning | FWD | Navarro | 57 min |
| Jun 10, 8:49 PM CDT | Severe Thunderstorm Warning | FWD | Coryell, Hamilton, Lampasas, Mills | 56 min |
| Jun 10, 8:57 PM CDT | Severe Thunderstorm Warning | FWD | Anderson, Henderson, Van Zandt | 48 min |
| Jun 10, 9:03 PM CDT | Special Weather Statement | FWD | Parker | 27 min |
| Jun 10, 9:28 PM CDT | Severe Thunderstorm Warning | FWD | Lamar | 17 min |
| Jun 10, 9:43 PM CDT | Severe Thunderstorm Warning | FWD | Bell, Coryell | 62 min |
| Jun 10, 9:50 PM CDT | Special Weather Statement | FWD | Palo Pinto | 25 min |
| Jun 10, 9:57 PM CDT | Special Weather Statement | FWD | Freestone | 33 min |
| Jun 10, 10:02 PM CDT | Severe Thunderstorm Warning | FWD | Palo Pinto, Parker | 58 min |
| Jun 10, 10:39 PM CDT | Severe Thunderstorm Warning | FWD | Tarrant | 66 min |
| Jun 10, 10:42 PM CDT | Areal Flood Advisory | FWD | Bell | 2 hr |
| Jun 10, 10:45 PM CDT | Severe Thunderstorm Warning | FWD | Bell, Falls, Milam | 30 min |
| Jun 10, 10:47 PM CDT | Areal Flood Advisory | FWD | Tarrant | 118 min |
| Jun 10, 11:28 PM CDT | Severe Thunderstorm Warning | FWD | Dallas, Tarrant | 62 min |
| Jun 10, 11:30 PM CDT | Areal Flood Advisory | FWD | Dallas | 3 hr |
| Jun 11, 12:48 AM CDT | Special Weather Statement | FWD | Kaufman | 27 min |
| Jun 11, 2:04 AM CDT | Special Weather Statement | FWD | Henderson | 26 min |
| Jun 11, 2:14 AM CDT | Severe Thunderstorm Warning | FWD | Henderson | 23 min |
| Jun 11, 2:21 AM CDT | Severe Thunderstorm Warning | FWD | Dallas, Ellis | 39 min |
| Jun 11, 2:32 AM CDT | Flash Flood Warning | FWD | Parker, Tarrant | 118 min |
| Jun 11, 2:39 AM CDT | Severe Thunderstorm Warning | FWD | Parker, Tarrant | 66 min |
| Jun 11, 2:49 AM CDT | Flash Flood Warning | FWD | Dallas | 6 hr |
| Jun 11, 2:57 AM CDT | Severe Thunderstorm Warning | FWD | Dallas | 63 min |
| Jun 11, 3:02 AM CDT | Severe Thunderstorm Warning | FWD | Ellis, Kaufman | 58 min |
| Jun 11, 3:16 AM CDT | Flash Flood Warning | FWD | Kaufman | 119 min |
| Jun 11, 3:41 AM CDT | Severe Thunderstorm Warning | FWD | Ellis, Johnson, Tarrant | 64 min |
| Jun 11, 3:54 AM CDT | Special Weather Statement | FWD | Henderson | 66 min |
| Jun 11, 3:59 AM CDT | Severe Thunderstorm Warning | FWD | Kaufman | 46 min |
| Jun 11, 4:32 AM CDT | Special Weather Statement | FWD | Denton | 58 min |
| Jun 11, 4:39 AM CDT | Severe Thunderstorm Warning | FWD | Navarro | 66 min |
| Jun 11, 4:44 AM CDT | Severe Thunderstorm Warning | FWD | Ellis | 31 min |
| Jun 11, 4:53 AM CDT | Special Weather Statement | FWD | Henderson | 37 min |
| Jun 11, 4:55 AM CDT | Areal Flood Advisory | FWD | Ellis | 3 hr |
| Jun 11, 5:00 AM CDT | Special Weather Statement | FWD | Dallas | 30 min |
| Jun 11, 5:06 AM CDT | Severe Thunderstorm Warning | FWD | Anderson, Henderson | 54 min |
| Jun 11, 5:37 AM CDT | Severe Thunderstorm Warning | FWD | Freestone, Limestone, Navarro | 53 min |
| Jun 11, 5:46 AM CDT | Areal Flood Advisory | FWD | Denton, Tarrant, Wise | 3 hr |
| Jun 11, 5:52 AM CDT | Severe Thunderstorm Warning | FWD | Anderson | 53 min |
| Jun 11, 6:28 AM CDT | Severe Thunderstorm Warning | FWD | Denton | 32 min |
| Jun 11, 7:01 AM CDT | River Flood Warning | FWD | Dallas | 7 hr |
| Jun 11, 7:22 AM CDT | Areal Flood Advisory | FWD | Collin | 113 min |
| Jun 11, 7:22 AM CDT | Special Weather Statement | FWD | Kaufman | 23 min |
| Jun 11, 7:43 AM CDT | Special Weather Statement | FWD | Young | 32 min |
| Jun 11, 7:46 AM CDT | Special Weather Statement | FWD | Dallas | 29 min |
| Jun 11, 7:53 AM CDT | Flash Flood Warning | FWD | Kaufman | 3 hr |
| Jun 11, 8:04 AM CDT | River Flood Warning | FWD | Dallas | 53 hr |
| Jun 11, 8:09 AM CDT | Special Weather Statement | FWD | Jack | 36 min |
| Jun 11, 8:23 AM CDT | Areal Flood Advisory | FWD | Tarrant | 112 min |
| Jun 11, 8:30 AM CDT | Flash Flood Warning | FWD | Dallas | 3 hr |
| Jun 11, 8:31 AM CDT | Special Weather Statement | FWD | Henderson | 29 min |
| Jun 11, 8:56 AM CDT | Special Weather Statement | FWD | Dallas | 34 min |
| Jun 11, 9:04 AM CDT | Special Weather Statement | FWD | Parker | 26 min |
| Jun 11, 9:11 AM CDT | River Flood Warning | FWD | Denton | 3 hr |
| Jun 11, 9:24 AM CDT | Severe Thunderstorm Warning | FWD | Dallas | 51 min |
| Jun 11, 9:30 AM CDT | Special Weather Statement | FWD | Parker | 30 min |
| Jun 11, 9:37 AM CDT | Special Weather Statement | FWD | Anderson | 23 min |
| Jun 11, 9:43 AM CDT | Severe Thunderstorm Warning | FWD | Kaufman | 62 min |
| Jun 11, 10:04 AM CDT | Flash Flood Warning | FWD | Parker, Tarrant | 3 hr |
| Jun 11, 10:26 AM CDT | Severe Thunderstorm Warning | FWD | Dallas, Tarrant | 64 min |
| Jun 11, 10:41 AM CDT | Flash Flood Warning | FWD | Kaufman | 3 hr |
| Jun 11, 10:52 AM CDT | River Flood Warning | FWD | Dallas | 6 hr |
| Jun 11, 10:58 AM CDT | Special Weather Statement | FWD | Anderson | 32 min |
| Jun 11, 11:04 AM CDT | Severe Thunderstorm Warning | FWD | Anderson | 41 min |
| Jun 11, 11:08 AM CDT | Special Weather Statement | FWD | Van Zandt | 37 min |
| Jun 11, 11:13 AM CDT | Flash Flood Warning | FWD | Dallas, Rockwall | 4 hr |
| Jun 11, 11:14 AM CDT | River Flood Warning | FWD | Ellis, Kaufman | 70 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 2009Every severe thunderstorm warning in 2009
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.