Alert archive / Texas / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 78, NWS Fort Worth, TX
NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 17, 2007, 4:01 PM CDT for Stephens County, Texas. It was in force for 59 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
- Apr 17, 2007, 4:01 PM CDT (21:01 UTC)
- Expired
- Apr 17, 2007, 5:00 PM CDT
- In force
- 59 min
- Issued by
- NWS Fort Worth, TX
- Area
- Counties, with a storm outline in the text
County Stephens County, TX
The radar
The Dyess AFB radar (KDYX), 45 km from the middle of the area, began a volume at 21:02 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 |
|---|---|---|---|
| Apr 17, 1:37 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 9.0 hours before the alert went out and 145 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 818 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 198 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 Apr 17, 3:17 PM CDT, 44 minutes earlier.
Area forecast discussion, Apr 17, 3:17 PM CDT, 44 minutes before
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</html>Hazardous weather outlook, Apr 17, 3:20 PM CDT, 41 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FORT WORTH TX 320 PM CDT TUE APR 17 2007 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-181200- 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- 320 PM CDT TUE APR 17 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS. .DAY ONE...TONIGHT SHOWERS AND THUNDERSTORMS ARE EXPECTED ACROSS A LARGE PORTION OF NORTH TEXAS THIS EVENING AND TONIGHT AS A STRONG UPPER LEVEL DISTURBANCE CROSSES THE AREA. SOME OF THE STORMS WILL BECOME SEVERE WITH LARGE HAIL BEING THE MAIN THREAT. A FEW OF THE STORMS MAY ALSO PRODUCE DAMAGING WINDS...PRIMARILY IN THE LATE AFTERNOON AND EARLY EVENING. THE GREATEST CHANCE FOR SEVERE WEATHER IS ACROSS THE CENTRAL AND SOUTHERN PORTIONS OF NORTH TEXAS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS SUNDAY AND MONDAY ACROSS NORTH TEXAS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THROUGHOUT NORTH TEXAS TONIGHT. DUNN
In the hours before
Special weather statement, Apr 17, 3:51 PM CDT, 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FORT WORTH TX 351 PM CDT TUE APR 17 2007 TXZ100-172115- YOUNG TX- 351 PM CDT TUE APR 17 2007 ...SIGNIFICANT WEATHER ADVISORY FOR... SOUTHERN YOUNG COUNTY AT 351 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 16 MILES EAST OF THROCKMORTON...MOVING EAST AT 25 MPH. CITIES IN THE PATH OF THIS STORM INCLUDE GRAHAM. HALF INCH DIAMETER HAIL AND WIND GUSTS TO 40 MPH CAN BE EXPECTED FROM THIS STORM. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT TUESDAY EVENING FOR NORTH CENTRAL TEXAS. LAT...LON 3320 9895 3296 9895 3296 9843 3318 9842 DUNN
The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 3:51 PM CDT | Special Weather Statement | FWD | Young | 24 min |
| Apr 17, 4:49 PM CDT | Special Weather Statement | FWD | Mills | 26 min |
| Apr 17, 5:02 PM CDT | Severe Thunderstorm Warning | FWD | Mills | 48 min |
| Apr 17, 5:18 PM CDT | Special Weather Statement | FWD | Comanche, Erath, Palo Pinto | 57 min |
| Apr 17, 5:54 PM CDT | Special Weather Statement | FWD | Parker | 66 min |
| Apr 17, 5:55 PM CDT | Severe Thunderstorm Warning | FWD | Erath, Hood, Somervell | 65 min |
| Apr 17, 5:59 PM CDT | Special Weather Statement | FWD | Bosque | 61 min |
| Apr 17, 6:29 PM CDT | Severe Thunderstorm Warning | FWD | Johnson | 61 min |
| Apr 17, 6:33 PM CDT | Special Weather Statement | FWD | Denton, Tarrant | 57 min |
| Apr 17, 6:55 PM CDT | Severe Thunderstorm Warning | FWD | Hill | 65 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.