Alert archive / Alabama / Areal Flood Warnings in 2012
Areal Flood Warning 2, NWS Huntsville, AL
NWS Huntsville, AL issued this areal flood warning at Jan 11, 2012, 1:04 PM CST for 5 counties in Alabama. It was in force for 4 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
- Jan 11, 2012, 1:04 PM CST (19:04 UTC)
- Expired
- Jan 11, 2012, 5:00 PM CST
- In force
- 4 hr
- Issued by
- NWS Huntsville, AL
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lawrence County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL
The radar
The Northeast Alabama radar (KHTX), 76 km from the middle of the area, began a volume at 19:06 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
Nashville Metro, TN (KBNA), launched 12:00Z, 7.1 hours before the alert went out and 173 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
- 66 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 468 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal 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 areal flood warning went out at Jan 11, 11:47 AM CST, 1 hour 17 minutes earlier.
Area forecast discussion, Jan 11, 11:47 AM CST, 1 hour 17 minutes before
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HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE HUNTSVILLE AL 918 AM CST WED JAN 11 2012 ALZ001>010-016-TNZ076-096-097-120000- LAUDERDALE-COLBERT-FRANKLIN AL-LAWRENCE-LIMESTONE-MADISON-MORGAN- MARSHALL-JACKSON-DEKALB-CULLMAN-MOORE-LINCOLN-FRANKLIN TN- 918 AM CST WED JAN 11 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH ALABAMA AND PORTIONS OF SOUTHERN MIDDLE TENNESSEE. .DAY ONE...TODAY AND TONIGHT... SHOWERS AND THUNDERSTORMS ASSOCIATED WITH AN UPPER LEVEL LOW PRESSURE SYSTEM WILL AFFECT MUCH OF NORTH ALABAMA AND SOUTHERN MIDDLE TENNESSEE THIS MORNING. WITHIN THE STRONGER STORMS...HEAVY RAIN AND SMALL HAIL WILL BE THE PRIMARY THREATS. IN ADDITION... RAINFALL AMOUNTS OF 1/2 TO 1 INCH IN A SHORT PERIOD OF TIME COULD CREATE LOCALIZED FLASH FLOODING...ESPECIALLY OVER AREAS THAT HAVE ALREADY EXPERIENCED HEAVY RAINFALL OVERNIGHT. SHOWERS AND THUNDERSTORMS WILL DIMINISH AND MOVE AWAY FROM THE AREA THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY... A REINFORCING SURGE OF MUCH COLDER AIR WILL MOVE INTO THE TENNESSEE VALLEY ON THURSDAY. AS THIS OCCURS...LIGHT RAIN SHOWERS WILL BEGIN TO MIX WITH LIGHT SNOW ACROSS NORTHWEST ALABAMA BY LATE THURSDAY MORNING...WITH THE TRANSITION TO LIGHT SNOW OCCURRING ACROSS THE REMAINDER OF THE AREA DURING THE EARLY AFTERNOON. MINOR ACCUMULATIONS OF SNOW...RANGING BETWEEN A TRACE AND ONE TENTH OF AN INCH...WILL BE POSSIBLE IN THE HIGHER TERRAIN OF NORTHEAST ALABAMA AND SOUTHERN MIDDLE TENNESSEE. ANY THREAT FOR SNOW WILL END EARLY THURSDAY EVENING...BUT STRONG WINDS WILL DROP WIND CHILL VALUES INTO THE 10 TO 15 DEGREE RANGE BY FRIDAY MORNING. .SPOTTER CALL TO ACTION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL IS NOT ANTICIPATED AT THIS TIME. DD/DJN
In the hours before
Local storm report, Jan 11, 10:45 AM CST, 2 hours 19 minutes before
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</html>Local storm report, Jan 11, 11:06 AM CST, 1 hour 58 minutes before
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</html>Special weather statement, Jan 11, 11:08 AM CST, 1 hour 56 minutes before
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</html>Local storm report, Jan 11, 11:20 AM CST, 1 hour 44 minutes before
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</html>Local storm report, Jan 11, 11:28 AM CST, 1 hour 36 minutes before
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</html>Local storm report, Jan 11, 11:50 AM CST, 1 hour 14 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 |
|---|---|---|---|---|
| Jan 11, 2:38 AM CST | Special Weather Statement | HUN | Marshall | 37 min |
| Jan 11, 4:35 AM CST | Flash Flood Warning | HUN | Madison | 3 hr |
| Jan 11, 4:46 AM CST | Special Weather Statement | HUN | Limestone | 44 min |
| Jan 11, 5:09 AM CST | Special Weather Statement | HUN | Marshall | 51 min |
| Jan 11, 7:22 AM CST | Special Weather Statement | HUN | Cullman | 38 min |
| Jan 11, 7:29 AM CST | Special Weather Statement | HUN | Jackson | 46 min |
| Jan 11, 7:30 AM CST | Areal Flood Warning | HUN | Madison | 3 hr |
| Jan 11, 8:05 AM CST | Special Weather Statement | HUN | Madison | 40 min |
| Jan 11, 8:24 AM CST | Special Weather Statement | HUN | Morgan | 51 min |
| Jan 11, 8:25 AM CST | Special Weather Statement | HUN | Morgan | 50 min |
| Jan 11, 8:27 AM CST | Special Weather Statement | HUN | Morgan | 48 min |
| Jan 11, 8:49 AM CST | Special Weather Statement | HUN | Madison | 41 min |
| Jan 11, 9:14 AM CST | Severe Thunderstorm Warning | HUN | Limestone, Madison | 37 min |
| Jan 11, 9:27 AM CST | Special Weather Statement | HUN | Madison | 48 min |
| Jan 11, 9:28 AM CST | Special Weather Statement | HUN | Marshall | 47 min |
| Jan 11, 9:47 AM CST | Flash Flood Warning | HUN | Madison, Marshall, Morgan | 3 hr |
| Jan 11, 9:54 AM CST | Special Weather Statement | HUN | Madison | 51 min |
| Jan 11, 9:58 AM CST | Flash Flood Warning | HUN | Lawrence, Limestone, Madison, Morgan | 3 hr |
| Jan 11, 10:11 AM CST | Special Weather Statement | HUN | Jackson | 49 min |
| Jan 11, 10:42 AM CST | River Flood Warning | HUN | Madison | 42 hr |
| Jan 11, 5:07 PM CST | Areal Flood Warning | HUN | Madison | 9 hr |
| Jan 11, 5:14 AM CST | Special Weather Statement | HUN | Franklin, Moore | 46 min |
| Jan 11, 5:50 AM CST | Special Weather Statement | HUN | Lincoln | 40 min |
| Jan 11, 10:32 AM CST | Special Weather Statement | HUN | Lincoln | 43 min |
| Jan 11, 11:08 AM CST | Special Weather Statement | HUN | Moore | 37 min |
Nearby
Areal Flood Warnings in Alabama, 2012Every areal flood warning in 2012
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.