Alert archive / Alabama / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 21, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Mar 29, 1991, 3:30 AM CST for Hale County, Alabama. It was in force for 45 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 29, 1991, 3:30 AM CST (09:30 UTC)
- Expired
- Mar 29, 1991, 4:15 AM CST
- In force
- 45 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Hale County, AL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 29, 3:40 AM CST | Hail 0.75 | Hale, 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, 9.5 hours before the alert went out and 43 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
- 93 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 748 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 243 m²/s²
- 0-3 km storm-relative helicity
- 369 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBHM 290932 SVRBHM ALC065-291015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 330 AM CST FRI MAR 29 1991 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 415 AM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH ALABAMA ...HALE COUNTY AT 325 AM CST WEATHER RADAR INDICTED A SEVERE THUNDERSTORM NEAR CYPRESS IN NORTHERN HALE COUNTY. THIS THUNDERSTORM HAS A HISTORY OF PRODUCING LARGE HAIL AND WIND GUSTS IN EXCESS OF 50 MPH. THE STORM WAS MOVING NORTHEAST AT 50 MPH. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.
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 29, 12:59 AM CST, 2 hours 31 minutes before
ALZ004>008-011-290800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 1259 AM CST FRI MAR 29 1991 ...SHOWERS AND THUNDERSTORMS ACROSS NORTHWEST AND WEST CENTRAL ALABAMA... AT 1255 AM...NATIONAL WEATHER SERVICE RADAR IN CENTREVILLE INDICATED AN AREA OF SHOWERS AND THUNDERSTORMS WHICH WAS WEST OF A LINE THAT EXTENDED FROM EAST OF HUNTSVILLE SOUTHWESTWARD TO HANCEVILLE IN CULLMAN COUNTY TO JUST NORTHWEST OF TUSCALOOSA AND BACK INTO EAST CENTRAL MISSISSIPPI. THE THUNDERSTORMS AND RAIN WERE MOVING TO THE NORTHEAST AT 45 MPH. STRONG THUNDERSTORMS ACROSS CENTRAL MISSISSIPPI BETWEEEN THE CITIES OF JACKSON AND MERIDIAN CONTINUE TO MOVE TO THE NORTHEAST RAPIDLY AND WILL APPROACH WESTERN ALABAMA WITHIN THE NEXT COUPLE OF HOURS. THIS IS A RAPIDLY DEVELOPING WEATHER SITUATION WHICH SHOULD BE MONITORED CLOSELY...YOU SHOULD STAY INFORMED BY TUNING IN NOAA WEATHER RADIO AND THE LOCAL MEDIA FOR LATER STATEMENTS.
Special weather statement, Mar 29, 2:31 AM CST, 59 minutes before
ALZ004>008-011-290930- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 230 AM CST FRI MAR 29 1991 ...TORNADO WATCH UNTIL 9AM CST FOR PORTIONS OF NORTH AND CENTRAL ALABAMA... ...STRONG THUNDERSTORMS MOVING INTO WEST CENTRAL ALABAMA... AT 225 AM...NATIONAL WEATHER SERVICE RADAR IN CENTREVILLE INDICATED A LINE OF STRONG THUNDERSTORMS EXTENDING FROM NEAR SUMITON IN WALKER COUNTY TO ALICEVILLE IN PICKENS COUNTY AND BACK INTO EAST CENTRAL MISSISSIPPI. THE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 45 MPH. THESE THUNDERSTORMS SHOULD MOVE INTO SUMTER...PICKENS....LAMAR...CULLMAN AND TUSCALOOSA COUNTIES WITHIN THE NEXT HOUR. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING HEAVY RAIN...STRONG GUSTY WINDS...SOME HAIL AND DEADLY LIGHTNING. THIS IS A RAPIDLY CHANGING WEATHER SITUTION AND SHOULD BE CLOSELY MONITORED. YOU ARE ADVISED TO STAY INFORMED BY TUNING IN NOAA WEATHER RADIO OR LOCAL MEDIA FOR LATER STATEMENTS AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 2:44 AM CST | Severe Thunderstorm Warning | BMX | Greene | 61 min |
| Mar 29, 3:10 AM CST | Severe Thunderstorm Warning | BMX | Tuscaloosa | 65 min |
| Mar 29, 3:55 AM CST | Severe Thunderstorm Warning | BMX | Jefferson | 50 min |
| Mar 29, 4:21 AM CST | Severe Thunderstorm Warning | BMX | Shelby | 54 min |
| Mar 29, 4:48 AM CST | Severe Thunderstorm Warning | BMX | Cleburne | 27 min |
| Mar 29, 5:07 AM CST | Severe Thunderstorm Warning | BMX | Talladega | 53 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.