Alert archive / Texas / Flash Flood Watches in 2007
Flash Flood Watch 7, NWS Fort Worth, TX
NWS Fort Worth, TX issued this flash flood watch at Apr 30, 2007, 3:50 AM CDT for 37 counties in Texas. It took effect at Apr 30, 2007, 7:00 AM CDT. It was in force for 33 hr.
The area
The counties it named.
The facts
- Issued
- Apr 30, 2007, 3:50 AM CDT (08:50 UTC)
- In effect from
- Apr 30, 2007, 7:00 AM CDT
- Expired
- May 1, 2007, 4:00 PM CDT
- In force
- 33 hr
- Issued by
- NWS Fort Worth, TX
- Flood severity
- None
All 37 counties
Anderson County, TX, Bell County, TX, Bosque County, TX, Collin County, TX, Cooke County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Ellis County, TX, Falls County, TX, Fannin County, TX, Freestone County, TX, Grayson County, TX, Hamilton County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Lampasas County, TX, Leon County, TX, Limestone County, TX, McLennan County, TX, Milam County, TX, Navarro County, TX, Parker County, TX, Rains County, TX, Robertson County, TX, Rockwall County, TX, Somervell County, TX, Tarrant County, TX, Van Zandt County, TX, Wise County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 55 km from the middle of the area, began a volume at 08:53 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
Fort Worth, TX (KFWD), launched 00:00Z, 8.8 hours before the alert went out and 72 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
- 268 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 1682 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood watch 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 watch went out at Apr 30, 12:53 AM CDT, 2 hours 57 minutes earlier.
Area forecast discussion, Apr 30, 12:53 AM CDT, 2 hours 57 minutes before
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Special weather statement, Apr 30, 12:46 AM CDT, 3 hours 4 minutes before
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SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FORT WORTH TX 108 AM CDT MON APR 30 2007 TXZ100-115-300645- YOUNG TX-STEPHENS TX- 108 AM CDT MON APR 30 2007 ...SIGNIFICANT WEATHER ADVISORY FOR... NORTH CENTRAL STEPHENS COUNTY SOUTHWESTERN YOUNG COUNTY AT 108 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 9 MILES NORTH OF BRECKENRIDGE...MOVING NORTH AT 20 MPH. FREQUENT CLOUD TO GROUND LIGHTNING...VERY HEAVY RAINFALL...PEA-SIZED HAIL...AND WIND GUSTS TO 50 MPH CAN BE EXPECTED FROM THIS STORM. IF THIS STORM INTENSIFIES...A SEVERE THUNDERSTORM WARNING MAY BE NEEDED FOR PARTS OF YOUNG COUNTY. LAT...LON 3281 9900 3279 9878 3319 9863 3324 9893 92
Special weather statement, Apr 30, 1:15 AM CDT, 2 hours 35 minutes before
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Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 8:00 PM CDT | Special Weather Statement | FWD | Young | 30 min |
| Apr 30, 12:46 AM CDT | Special Weather Statement | FWD | Eastland | 29 min |
| Apr 30, 1:08 AM CDT | Special Weather Statement | FWD | Young | 37 min |
| Apr 30, 1:15 AM CDT | Special Weather Statement | FWD | Eastland, Stephens | 30 min |
| Apr 30, 1:29 AM CDT | Severe Thunderstorm Warning | FWD | Stephens | 37 min |
| Apr 30, 11:57 AM CDT | Special Weather Statement | FWD | Milam | 33 min |
| Apr 30, 12:57 PM CDT | Special Weather Statement | FWD | Robertson | 33 min |
| Apr 30, 3:11 PM CDT | Special Weather Statement | FWD | Anderson | 34 min |
| Apr 30, 3:30 PM CDT | Special Weather Statement | FWD | Leon | 30 min |
| Apr 30, 3:49 PM CDT | Special Weather Statement | FWD | Anderson | 56 min |
| Apr 30, 6:43 PM CDT | Special Weather Statement | FWD | Lamar | 62 min |
| Apr 30, 6:45 PM CDT | Special Weather Statement | FWD | Fannin | 60 min |
Nearby
Flash Flood Watches in Texas, 2007Every flash flood watch 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.