Alert archive / Alabama / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 12, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Mar 23, 1991, 2:12 AM CST for Fayette County, Alabama. It was in force for 48 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 23, 1991, 2:12 AM CST (08:12 UTC)
- Expired
- Mar 23, 1991, 3:00 AM CST
- In force
- 48 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Fayette County, AL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 23, 2:35 AM CST | Hail 0.75 | Fayette, AL |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Centreville/Bibb, AL (KCKL), launched 00:00Z, 8.2 hours before the alert went out and 104 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
- 1360 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 852 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 238 m²/s²
- 0-3 km storm-relative helicity
- 324 m²/s²
- Significant tornado parameter
- 2.3
- Supercell composite
- 7.8
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Mar 22, 10:06 PM CST, 4 hours 6 minutes before
ALZ004>009-011-230500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 1005 PM CST FRI MAR 22 1991 ...TORNADO WATCH CANCELLED FOR PART OF NORTH AND CENTRAL ALABAMA... THE NATIONAL WEATHER SERVICE HAS CANCELLED THE TORNADO WATCH FOR THE FOLLOWING ALABAMA COUNTIES... LAMAR...FAYETTE...WALKER...PICKENS...TUSCALOOSA...JEFFERSON...SHELBY... BLOUNT...SAINT-CLAIR...ETOWAH...CHEROKEE...CALHOUN AND TALLADEGA. THE WATCH REMAINS IN EFFECT FOR COUNTIES TO THE NORTH OF THESE COUNTIES ...MAINLY THE TENNESSEE VALLEY...UNTIL 2 AM CST.
Special weather statement, Mar 22, 11:02 PM CST, 3 hours 10 minutes before
ALZ004>009-011-230800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 1102 PM CST FRI MAR 22 1991 ...TORNADO WATCH CANCELLED FOR NORTHERN ALABAMA... THE NATIONAL WEATHER SERVICE HAS CANCELLED THE TORNADO WATCH FOR THE FOLLOWING ALABAMA COUNTIES... LAUDERDALE...COLBERT...FRANKLIN...LAWRENCE...LIMESTONE...MADISON... MORGAN...JACKSON...MARSHALL...DE KALB...MARION...WINSTON...AND CULLMAN. THE AIRMASS OVER NORTHERN ALABAMA HAS BECOME MUCH MORE STABLE SINCE 10 PM RESULTING IN A RAPID DECREASE OF THUNDERSTORM ACTIVITY. FOR THIS REASON...THE TORNADO WATCH HAS BEEN CANCELLED.
Special weather statement, Mar 23, 12:57 AM CST, 1 hour 15 minutes before
ALZ004>009-011-230900-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1255 AM CST SAT MAR 23 1991
AT 1250 AM CENTERVILLE RADAR INDICATED A LINE OF SHOWERS AND
THUNDERSTORMS FROM HUNTSVILLE SOUTHWEST ACROSS LAMAR COUNTY ALABAMA
TO JACKSON MISSISSIPPI. THE STRONGEST STORMS WERE LOCATD IN CENTRAL LAMAR AND
NEAR BRILLIANT IN SOUTHEASTERN MARION COUNTY. STRONG WIND...FREQUENT LIGHTNING AND POSSIBLY SOME SMALL HAIL CAN BE EXPECTED WITH THESE
STORMS AS THEY MOVE RAPIDLY NORTHEASTWARD.Special weather statement, Mar 23, 1:01 AM CST, 1 hour 11 minutes before
ALZ004>009-011-230900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 101 AM CST SAT MAR 23 1991 AT 1250 AM CENTERVILLE RADAR INDICATED A LINE OF SHOWERS AND THUNDERSTORMS FROM HUNTSVILLE SOUTHWEST ACROSS LAMAR COUNTY ALABAMA TO JACKSON MISSISSIPPI. THE STRONGEST STORMS WERE LOCATD IN CENTRAL LAMAR AND NEAR BRILLIANT IN SOUTHEASTERN MARION COUNTY. STRONG WIND... FREQUENT LIGHTNING AND POSSIBLY SOME SMALL HAIL CAN BE EXPECTED WITH THESE STORMS AS THEY MOVE RAPIDLY NORTHEASTWARD.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 22, 6:49 PM CST | Severe Thunderstorm Warning | BMX | Colbert, Lauderdale | 56 min |
| Mar 22, 8:41 PM CST | Severe Thunderstorm Warning | BMX | Lawrence, Limestone | 64 min |
| Mar 22, 8:47 PM CST | Severe Thunderstorm Warning | BMX | Marion | 28 min |
| Mar 23, 2:00 AM CST | Severe Thunderstorm Warning | BMX | Lamar, Pickens | 45 min |
| Mar 23, 2:51 AM CST | Severe Thunderstorm Warning | BMX | Walker | 39 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 1991Every severe thunderstorm warning in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.