Alert archive / Alabama / Flash Flood Warnings in 2010
Flash Flood Warning 42, NWS Huntsville, AL
NWS Huntsville, AL issued this flash flood warning at Jul 26, 2010, 4:11 PM CDT for DeKalb County, Alabama. It was in force for 118 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
- Jul 26, 2010, 4:11 PM CDT (21:11 UTC)
- Expired
- Jul 26, 2010, 6:09 PM CDT
- In force
- 118 min
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Flood severity
- None
County DeKalb County, AL
The radar
The Northeast Alabama radar (KHTX), 58 km from the middle of the area, began a volume at 21:11 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.2 hours before the alert went out and 171 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
- 1811 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 938 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- -3 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 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 Jul 26, 3:37 PM CDT, 34 minutes earlier.
Area forecast discussion, Jul 26, 3:37 PM CDT, 34 minutes before
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HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE HUNTSVILLE AL 1156 AM CDT MON JUL 26 2010 ALZ001>010-016-TNZ076-096-097-270200- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN- MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN- 1156 AM CDT MON JUL 26 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...TODAY AND TONIGHT... SCATTERED STRONG THUNDERSTORMS WILL DEVELOP TODAY THROUGH THIS EVENING. THE PRIMARY THREATS WILL BE SUDDEN FREQUENT LIGHTNING AND HEAVY RAIN. LOCALIZED FLASH FLOODING IS POSSIBLE...ESPECIALLY WITH SLOW MOVING STORMS. A FEW STORMS WILL BE CAPABLE OF PRODUCING BRIEF GUSTY WINDS OF 40 MPH OR HIGHER. OUTSIDE OF THE STORMS...HOT AND HUMID CONDITIONS WILL PREVAIL THIS AFTERNOON. DAYTIME TEMPERATURES ARE FORECAST TO BE IN THE LOW TO MID 90S WITH HEAT INDEX READINGS APPROACHING 105 DEGREES. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... ISOLATED TO SCATTERED...MAINLY AFTERNOON AND EVENING... THUNDERSTORMS CAN BE EXPECTED EACH DAY. PRIMARY THREATS WITH STRONGER STORMS WILL BE LOCALLY HEAVY RAIN AND BRIEF GUSTY WINDS. OUTSIDE OF THE STORMS...HOT AND HUMID CONDITIONS WILL PREVAIL THROUGH THE WEEKEND. BEYOND TUESDAY...DAYTIME TEMPERATURES ARE FORECAST TO BE IN THE MID TO UPPER 90S WITH HEAT INDEX READINGS APPROACHING 105 DEGREES. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS POSSIBLE ON AN AS NEEDED BASIS. KULA
In the hours before
Special weather statement, Jul 26, 2:49 PM CDT, 1 hour 22 minutes before
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</html>Special weather statement, Jul 26, 4:09 PM CDT, 2 minutes 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 |
|---|---|---|---|---|
| Jul 25, 9:20 PM CDT | Special Weather Statement | HUN | Cullman | 40 min |
| Jul 25, 9:42 PM CDT | Flash Flood Warning | HUN | Cullman | 2 hr |
| Jul 26, 11:47 AM CDT | Special Weather Statement | HUN | Jackson | 43 min |
| Jul 26, 12:26 PM CDT | Heat Advisory | HUN | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 6 hr |
| Jul 26, 12:35 PM CDT | Special Weather Statement | HUN | Jackson | 25 min |
| Jul 26, 1:56 PM CDT | Severe Thunderstorm Warning | HUN | Madison | 19 min |
| Jul 26, 2:02 PM CDT | Special Weather Statement | HUN | Limestone | 43 min |
| Jul 26, 2:13 PM CDT | Severe Thunderstorm Warning | HUN | Jackson | 26 min |
| Jul 26, 2:37 PM CDT | Special Weather Statement | HUN | Limestone, Madison | 38 min |
| Jul 26, 2:49 PM CDT | Special Weather Statement | HUN | DeKalb | 26 min |
| Jul 26, 2:56 PM CDT | Special Weather Statement | HUN | Madison | 34 min |
| Jul 26, 3:07 PM CDT | Special Weather Statement | HUN | DeKalb | 23 min |
| Jul 26, 3:14 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb | 46 min |
| Jul 26, 3:21 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb | 39 min |
| Jul 26, 3:32 PM CDT | Special Weather Statement | HUN | Jackson | 28 min |
| Jul 26, 3:51 PM CDT | Severe Thunderstorm Warning | HUN | Jackson, Marshall | 24 min |
| Jul 26, 4:09 PM CDT | Special Weather Statement | HUN | Jackson | 51 min |
| Jul 26, 4:16 PM CDT | Severe Thunderstorm Warning | HUN | DeKalb | 36 min |
| Jul 26, 4:22 PM CDT | Special Weather Statement | HUN | Marshall | 23 min |
| Jul 26, 4:46 PM CDT | Special Weather Statement | HUN | Marshall | 44 min |
| Jul 26, 5:09 PM CDT | Flash Flood Warning | HUN | Cullman | 62 min |
| Jul 26, 5:33 PM CDT | Special Weather Statement | HUN | Franklin | 27 min |
| Jul 26, 5:59 PM CDT | Special Weather Statement | HUN | Colbert | 46 min |
| Jul 26, 6:44 PM CDT | Severe Thunderstorm Warning | HUN | Franklin | 31 min |
| Jul 26, 12:04 PM CDT | Special Weather Statement | HUN | Lincoln | 26 min |
| Jul 26, 12:15 PM CDT | Special Weather Statement | HUN | Franklin | 30 min |
| Jul 26, 12:32 PM CDT | Special Weather Statement | HUN | Lincoln | 43 min |
| Jul 26, 1:01 PM CDT | Severe Thunderstorm Warning | HUN | Moore | 44 min |
| Jul 26, 1:12 PM CDT | Flash Flood Warning | HUN | Moore | 78 min |
| Jul 26, 1:18 PM CDT | Special Weather Statement | HUN | Lincoln | 27 min |
| Jul 26, 1:35 PM CDT | Special Weather Statement | HUN | Lincoln | 25 min |
| Jul 26, 1:36 PM CDT | Flash Flood Warning | HUN | Lincoln | 3 hr |
| Jul 26, 2:00 PM CDT | Special Weather Statement | HUN | Lincoln | 45 min |
| Jul 26, 6:29 PM CDT | Special Weather Statement | HUN | Hardin | 31 min |
Nearby
Flash Flood Warnings in Alabama, 2010Every flash flood warning in 2010
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.