Alert archive / Texas / Flash Flood Warnings in 2009
Flash Flood Warning 37, NWS Fort Worth, TX
NWS Fort Worth, TX issued this flash flood warning at May 6, 2009, 7:50 AM CDT for Collin County, Grayson County, Hunt County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 6, 2009, 7:50 AM CDT (12:50 UTC)
- Expired
- May 6, 2009, 10:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Fort Worth, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Collin County, TX, Grayson County, TX, Hunt County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 115 km from the middle of the area, began a volume at 12:53 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
Shreveport, LA (KSHV), launched 12:00Z, 0.8 hours before the alert went out and 268 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
- 1912 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 539 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 277 m²/s²
- 0-3 km storm-relative helicity
- 352 m²/s²
- Significant tornado parameter
- 2.9
- Supercell composite
- 12.8
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at May 6, 6:44 AM CDT, 1 hour 6 minutes earlier.
Area forecast discussion, May 6, 6:44 AM CDT, 1 hour 6 minutes before
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</html>Hazardous weather outlook, May 6, 4:36 AM CDT, 3 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FORT WORTH TX 436 AM CDT WED MAY 6 2009 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-071100- 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- 436 AM CDT WED MAY 6 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS. .DAY ONE...TODAY AND TONIGHT. THUNDERSTORMS ARE POSSIBLE NORTHWEST OF A GRAHAM TO HEARNE LINE TODAY. LARGE HAIL...HEAVY RAINFALL...AND DAMAGING WINDS ARE POSSIBLE. THE SEVERE WEATHER AND FLASH FLOODING POTENTIAL WILL BE GREATEST NORTHWEST OF A BOWIE TO KAUFMAN LINE THROUGH EARLY AFTERNOON. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THERE IS A CHANCE FOR THUNDERSTORMS NORTH OF A BRECKENRIDGE TO PALESTINE LINE FRIDAY NIGHT THROUGH SATURDAY AND ACROSS ALL OF NORTH TEXAS SATURDAY NIGHT. STORMS WILL BE POSSIBLE NORTH OF AN EASTLAND TO PALESTINE LINE SUNDAY AND SUNDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS LIKELY NORTHWEST OF A BOWIE TO KAUFMAN LINE THROUGH EARLY AFTERNOON. 13
In the hours before
Local storm report, May 6, 6:25 AM CDT, 1 hour 25 minutes before
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</html>Local storm report, May 6, 6:35 AM CDT, 1 hour 15 minutes before
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</html>Local storm report, May 6, 7:00 AM CDT, 50 minutes before
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</html>Local storm report, May 6, 7:10 AM CDT, 40 minutes before
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</html>Local storm report, May 6, 7:19 AM CDT, 31 minutes before
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</html>Local storm report, May 6, 7:35 AM CDT, 15 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 |
|---|---|---|---|---|
| May 5, 7:06 PM CDT | Severe Thunderstorm Warning | FWD | Palo Pinto, Stephens | 54 min |
| May 5, 7:58 PM CDT | Severe Thunderstorm Warning | FWD | Eastland, Erath, Palo Pinto, Stephens | 62 min |
| May 5, 9:03 PM CDT | Special Weather Statement | FWD | Erath | 27 min |
| May 5, 10:20 PM CDT | Special Weather Statement | FWD | Wise | 25 min |
| May 5, 10:34 PM CDT | Severe Thunderstorm Warning | FWD | Jack, Parker, Tarrant, Wise | 56 min |
| May 5, 11:20 PM CDT | Severe Thunderstorm Warning | FWD | Tarrant | 22 min |
| May 6, 4:33 AM CDT | Special Weather Statement | FWD | Grayson | 27 min |
| May 6, 4:48 AM CDT | Severe Thunderstorm Warning | FWD | Grayson | 57 min |
| May 6, 4:55 AM CDT | Special Weather Statement | FWD | Fannin | 35 min |
| May 6, 5:04 AM CDT | Severe Thunderstorm Warning | FWD | Cooke | 43 min |
| May 6, 5:24 AM CDT | Severe Thunderstorm Warning | FWD | Fannin | 66 min |
| May 6, 5:33 AM CDT | Severe Thunderstorm Warning | FWD | Collin, Grayson | 57 min |
| May 6, 5:43 AM CDT | Severe Thunderstorm Warning | FWD | Lamar | 62 min |
| May 6, 5:52 AM CDT | Severe Thunderstorm Warning | FWD | Delta, Hopkins, Hunt | 53 min |
| May 6, 6:15 AM CDT | Severe Thunderstorm Warning | FWD | Collin, Dallas, Rockwall | 60 min |
| May 6, 6:42 AM CDT | Severe Thunderstorm Warning | FWD | Hopkins, Hunt, Kaufman, Rains, Van Zandt | 63 min |
| May 6, 6:52 AM CDT | Flash Flood Warning | FWD | Fannin, Grayson | 3 hr |
| May 6, 8:26 AM CDT | Areal Flood Advisory | FWD | Delta, Hopkins | 2 hr |
| May 6, 9:16 AM CDT | Special Weather Statement | FWD | Fannin | 29 min |
| May 6, 9:45 AM CDT | Areal Flood Advisory | FWD | Fannin | 90 min |
| May 6, 9:50 AM CDT | River Flood Warning | FWD | Hunt | 35 hr |
| May 6, 9:50 AM CDT | River Flood Warning | FWD | Hunt, Rockwall | 11 hr |
| May 6, 10:11 AM CDT | River Flood Warning | FWD | Delta, Hopkins | 4 days |
| May 6, 10:16 AM CDT | River Flood Warning | FWD | Collin | 23 hr |
| May 6, 11:40 AM CDT | River Flood Warning | FWD | Collin | 21 hr |
Nearby
Flash Flood Warnings in Texas, 2009Every flash flood 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.