Alert archive / Texas / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 452, NWS Fort Worth, TX
NWS Fort Worth, TX issued this severe thunderstorm warning at Sep 21, 2009, 5:58 PM CDT for Montague County, Wise County, Texas. It was in force for 77 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
- Sep 21, 2009, 5:58 PM CDT (22:58 UTC)
- Expired
- Sep 21, 2009, 7:15 PM CDT
- In force
- 77 min
- Issued by
- NWS Fort Worth, TX
- Area
- Storm-based polygon
Counties Montague County, TX, Wise County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 104 km from the middle of the area, began a volume at 22:59 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 |
|---|---|---|---|
| Sep 21, 4:29 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 11.0 hours before the alert went out and 199 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
- 2002 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 920 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 26 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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 21, 5:33 PM CDT, 25 minutes earlier.
Area forecast discussion, Sep 21, 5:33 PM CDT, 25 minutes before
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</html>Hazardous weather outlook, Sep 21, 3:18 PM CDT, 2 hours 40 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FORT WORTH TX 318 PM CDT MON SEP 21 2009 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-221145- 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- 318 PM CDT MON SEP 21 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT. THUNDERSTORMS ARE EXPECTED TO DEVELOP NEAR A BOWIE TO BRECKENRIDGE LINE LATE THIS AFTERNOON...AND THEN BECOME MORE NUMEROUS WHILE MOVING SOUTHEAST DURING THE EVENING AND OVERNIGHT HOURS AS A COLD FRONT MOVES THROUGH THE OUTLOOK AREA. ANY STORMS THAT DEVELOP THIS AFTERNOON THROUGH THE OVERNIGHT HOURS WILL BE CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. IN ADDITION TO ANY SEVERE WEATHER...HEAVY RAINFALL WILL BE POSSIBLE AS THE FRONT MOVES THROUGH LEADING TO FLASH FLOODING. A FLASH FLOOD WATCH IS IN EFFECT FOR AREAS NORTH AND EAST OF A GAINESVILLE TO MERIDIAN TO ATHENS LINE THROUGH TONIGHT. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. SHOWERS AND THUNDERSTORMS WILL CONTINUE MAINLY ACROSS THE SOUTHEAST HALF OF NORTH TEXAS INTO TUESDAY. HEAVY RAINFALL WILL BE THE MAIN THREAT DURING THIS TIME. THE CHANCE FOR THUNDERSTORMS WILL CONTINUE FOR ALL OF NORTH TEXAS THURSDAY AND FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS LIKELY LATE THIS AFTERNOON AND INTO THE EVENING HOURS FOR AREAS GENERALLY ALONG AND NORTH OF INTERSTATE 20. SPOTTER ACTIVATION MAY BE NEEDED ACROSS ALL OF NORTH TEXAS DURING THE OVERNIGHT HOURS. CAVANAUGH
In the hours before
Special weather statement, Sep 21, 4:32 PM CDT, 1 hour 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
432 PM CDT MON SEP 21 2009
TXZ100-101-212200-
JACK TX-YOUNG TX-
432 PM CDT MON SEP 21 2009
...SIGNIFICANT WEATHER ADVISORY FOR...
WESTERN JACK COUNTY
EASTERN YOUNG COUNTY
AT 432 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 11 MILES NORTHWEST OF GRAHAM...MOVING EAST AT 20
MPH.
CITIES IN THE PATH OF THIS STORM INCLUDE BRYSON AND GRAHAM.
PEA-SIZED HAIL AND WIND GUSTS TO 50 MPH CAN BE EXPECTED FROM THIS
STORM.
IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT
MONDAY EVENING FOR NORTHEASTERN TEXAS.
LAT...LON 3325 9879 3346 9822 3300 9824 3301 9841
3297 9842 3295 9878
TIME...MOT...LOC 2132Z 261DEG 18KT 3321 9866Special weather statement, Sep 21, 5:52 PM CDT, 6 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 |
|---|---|---|---|---|
| Sep 21, 4:10 AM CDT | Flash Flood Watch | FWD | Bosque, Collin, Dallas, Delta, Denton, Ellis and 16 more | 19 hr |
| Sep 21, 4:32 PM CDT | Special Weather Statement | FWD | Young | 28 min |
| Sep 21, 4:44 PM CDT | Severe Thunderstorm Warning | FWD | Jack, Young | 29 min |
| Sep 21, 4:45 PM CDT | Severe Thunderstorm Warning | FWD | Palo Pinto, Stephens | 60 min |
| Sep 21, 5:26 PM CDT | Severe Thunderstorm Warning | FWD | Jack | 64 min |
| Sep 21, 5:32 PM CDT | Severe Thunderstorm Warning | FWD | Eastland, Erath, Palo Pinto, Stephens | 58 min |
| Sep 21, 5:52 PM CDT | Special Weather Statement | FWD | Montague | 23 min |
| Sep 21, 6:14 PM CDT | Special Weather Statement | FWD | Eastland | 31 min |
| Sep 21, 6:20 PM CDT | Severe Thunderstorm Warning | FWD | Palo Pinto, Parker | 55 min |
| Sep 21, 6:28 PM CDT | Severe Thunderstorm Warning | FWD | Cooke | 62 min |
| Sep 21, 6:44 PM CDT | Areal Flood Advisory | FWD | Palo Pinto | 3 hr |
| Sep 21, 6:49 PM CDT | Special Weather Statement | FWD | Comanche | 26 min |
| Sep 21, 6:53 PM CDT | Special Weather Statement | FWD | Hood, Somervell | 22 min |
| Sep 21, 6:56 PM CDT | Flash Flood Warning | FWD | Palo Pinto | 3 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.