Alert archive / Texas / Flash Flood Watches in 2017
Flash Flood Watch 5, NWS Fort Worth, TX
NWS Fort Worth, TX issued this flash flood watch at Aug 12, 2017, 10:29 AM CDT for 7 counties in Texas. It took effect at Aug 12, 2017, 7:00 PM CDT. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Aug 12, 2017, 10:29 AM CDT (15:29 UTC)
- In effect from
- Aug 12, 2017, 7:00 PM CDT
- Expired
- Aug 13, 2017, 7:00 AM CDT
- In force
- 12 hr
- Issued by
- NWS Fort Worth, TX
- Flood severity
- None
Counties Cooke County, TX, Delta County, TX, Fannin County, TX, Grayson County, TX, Hopkins County, TX, Hunt County, TX, Lamar County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 147 km from the middle of the area, began a volume at 15:31 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 12:00Z, 3.5 hours before the alert went out and 129 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
- 987 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 1269 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Aug 12, 6:51 AM CDT, 3 hours 38 minutes earlier.
Area forecast discussion, Aug 12, 6:51 AM CDT, 3 hours 38 minutes before
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</html>Hazardous weather outlook, Aug 12, 4:29 AM CDT, 6 hours before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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<p id="message2">
Please try again in a few minutes.
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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 |
|---|---|---|---|---|
| Aug 12, 1:51 PM CDT | Special Weather Statement | FWD | Hunt | 24 min |
| Aug 12, 2:31 PM CDT | Special Weather Statement | FWD | Hopkins | 29 min |
| Aug 12, 3:47 PM CDT | Special Weather Statement | FWD | Grayson | 28 min |
| Aug 12, 3:57 PM CDT | Areal Flood Advisory | FWD | Grayson | 2 hr |
| Aug 12, 4:40 PM CDT | Special Weather Statement | FWD | Grayson | 35 min |
| Aug 12, 4:46 PM CDT | Severe Thunderstorm Warning | FWD | Collin, Fannin, Grayson, Hunt | 59 min |
| Aug 12, 6:51 PM CDT | Special Weather Statement | FWD | Hopkins, Rains, Van Zandt | 54 min |
Nearby
Flash Flood Watches in Texas, 2017Every flash flood watch in 2017
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.