Alert archive / Alabama / Flash Flood Warnings in 2014
Flash Flood Warning 12, NWS Huntsville, AL
NWS Huntsville, AL issued this flash flood warning at Apr 30, 2014, 12:46 AM CDT for 4 counties in Alabama. 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
- Apr 30, 2014, 12:46 AM CDT (05:46 UTC)
- Expired
- Apr 30, 2014, 3:45 AM CDT
- In force
- 3 hr
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Jackson County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL
The radar
The Northeast Alabama radar (KHTX), 53 km from the middle of the area, began a volume at 05:46 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
Birmingham, AL (KBMX), launched 00:00Z, 5.8 hours before the alert went out and 170 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
- 407 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 688 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 5.0
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 Huntsville, AL wrote its last area forecast discussion before this flash flood warning went out at Apr 29, 6:53 PM CDT, 5 hours 53 minutes earlier.
Area forecast discussion, Apr 29, 6:53 PM CDT, 5 hours 53 minutes before
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</html>Hazardous weather outlook, Apr 29, 4:15 PM CDT, 8 hours 31 minutes before
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Special weather statement, Apr 29, 6:46 PM CDT, 6 hours before
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</html>The office that day
Everything else NWS Huntsville, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 7:11 PM CDT | Special Weather Statement | HUN | Colbert | 34 min |
| Apr 29, 7:39 PM CDT | Special Weather Statement | HUN | Lawrence | 36 min |
| Apr 29, 8:07 PM CDT | Special Weather Statement | HUN | Limestone | 23 min |
| Apr 29, 8:54 PM CDT | Special Weather Statement | HUN | Colbert, Lauderdale | 36 min |
| Apr 29, 9:02 PM CDT | Severe Thunderstorm Warning | HUN | Colbert, Lauderdale | 28 min |
| Apr 29, 11:30 PM CDT | Special Weather Statement | HUN | Morgan | 30 min |
| Apr 30, 1:32 AM CDT | Special Weather Statement | HUN | Cullman | 43 min |
| Apr 30, 1:46 AM CDT | Severe Thunderstorm Warning | HUN | Cullman, Morgan | 29 min |
| Apr 30, 2:38 AM CDT | Special Weather Statement | HUN | Madison | 37 min |
| Apr 30, 7:50 AM CDT | River Flood Warning | HUN | Madison | 18 hr |
| Apr 30, 8:09 AM CDT | Areal Flood Warning | HUN | Jackson | 6 hr |
| Apr 29, 7:00 PM CDT | Special Weather Statement | HUN | Lincoln, Moore | 45 min |
| Apr 30, 1:08 AM CDT | Flash Flood Warning | HUN | Franklin | 3 hr |
Nearby
Flash Flood Warnings in Alabama, 2014Every flash flood warning in 2014
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.