Alert archive / Alabama / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 11, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Mar 29, 1991, 11:26 AM CST for Crenshaw County, Alabama. It was in force for 34 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, 11:26 AM CST (17:26 UTC)
- Expired
- Mar 29, 1991, 12:00 PM CST
- In force
- 34 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Crenshaw County, AL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 29, 11:30 AM CST | Thunderstorm Wind 0 | Crenshaw, 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 12:00Z, 5.4 hours before the alert went out and 154 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 567 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 267 m²/s²
- 0-3 km storm-relative helicity
- 528 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
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 29, 5:59 AM CST, 5 hours 27 minutes before
ALZ013-016-MSZ014-013-291400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 557 AM CST FRI MAR 29 1991 ...TORNADO WATCH NUMBER 85 REMAINS IN EFFECT UTIL 9 AM CST FOR ALL COUNTIES IN SOUTHEAST MISSISSIPPI AND THE ADJACENT COASTAL WATERS... NO SEVERE WEATHER HAS OCCURED IN SOUTHEAST MISSISSIPPI. AT 6 AM CST MOBILE RADAR INDICATED WIDELY SCATTERED THUNDERSTORMS OVER SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA. THE STORMS WERE MOVING TOWARD THE NORTHEAST AT 40 MPH. OTHER NATIONAL WEATHER SERVICE RADARS INDICATED A LINE OF VERY STRONG THUNDERSTORMS EXTENDING FROM NEAR BIRMINGHAM ALABAMA TO NEAR BATON ROUGE LOUISIANA. THESE STORMS WILL MOVE INTO SOUTHEAST MISSISSIPPI LATER THIS MORNING.
Special weather statement, Mar 29, 8:11 AM CST, 3 hours 15 minutes before
ALZ013-015-016-MSZ014-013-291615- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 808 AM CST FRI MAR 29 1991 ...TORNADO WATCH NUMBER 85 REMAINS IN EFFECT UNTIL 9 AM CST FOR ALL SOUTHEAST MISSISSIPPI COUNTIES... ...TORNADO WATCH NUMBER 87 REMAINS IN EFFECT UNTIL 1 PM CST FOR ALL SOUTHWEST ALABAMA COUNTIES... AT 800 AM CST MOBILE RADAR INDICATED A LINE OF VERY STRONG THUNDERSTORMS FROM NEAR THOMASVILLE ALABAMA TO NEAR PICAYUNE MISSISSIPPI. THE STORMS HAVE BEEN INCREASING IN STRENGTH AND BECOMING BETTER ORGANIZED. THE STORMS WERE MOVING TO THE NORTHEAST AT 45 MPH. RESIDENTS OF SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNING.
Special weather statement, Mar 29, 9:11 AM CST, 2 hours 15 minutes before
ALZ013-015-016-MSZ014-013-291715- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 908 AM CST FRI MAR 29 1991 ...TORNADO WATCH NUMBER 87 REMAINS IN EFFECT FOR ALL SOUTHWEST ALABAMA COUNTIES UNTIL 100 PM CST THIS AFTERNOON... ...TORNADO WATCH NUMBER 85 THAT WAS IN EFFECT FOR SOUTHEAST MISSISSIPPI COUNTIES EXPIRED AT 900 AM CST... AT 900 AM CST MOBILE RADAR INDICATED A LINE OF VERY STRONG THUNDERSTORMS FROM NEAR MONTGOMERY ALABAMA TO NEAR GULFPORT MISSISSIPPI. THE STORMS WERE MOVING TO THE NORTHEAST AT 45 MPH. STRONG SOUTH WINDS AHEAD OF THE THUNDERSTORMS HAVE CAUSED TIDES TO BE HIGHER THAN NORMAL AND THE EAST BOUND LANE OF THE MOBILE BAY CAUSEWAY HAS BEEN CLOSED. WINDS HAVE BEEN GUSTING AS HIGH AS 55 MPH AT MOBILE BATES FIELD AIRPORT. TORNADO WATCH NUMBER 85 THAT WAS IN EFFECT FOR SOUTHEAST MISSISSIPPI COUNTIES EXPIRED AT 900 AM CST. THE THREAT OF SEVERE WEATHER IN SOUTHEAST MISSISSIPPI HAS DEMINISHED.
Special weather statement, Mar 29, 11:05 AM CST, 21 minutes before
ALZ013-015-016-291900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 1102 AM CST FRI MAR 29 1991 ...TORNADO WATCH NUMBER 87 REMAINS IN EFFECT FOR ALL SOUTHWEST ALABAMA COUNTIES EXCEPT CLARKE AND WASHINGTON... AT 1100 AM CST MOBILE RADAR INDICATED A LINE OF SHOWERS AND THUNDERSTORMS FROM NEAR MONTGOMERY TO MOBILE TO THE MOUTH OF THE MISSISSIPPI. THE STRONGEST STORM WAS LOCATED OVER SOUTHERN CONECUH COUNTY. THE STORMS WERE MOVING TO THE NORTHEAST AT 45 MPH. THE THREAT OF SEVERE WEATHER HAS MOVED EAST OF WASHINGTON AND CLARKE COUNTIES AND THE TORNADO WATCH HAS BEEN CANCELLED FOR THESE COUNTIES. WINDS ARE DIMINISHING AND SHIFTING TO THE WEST ALONG THE ALABAMA COAST AND HIGH TIDES CAUSED BY THE STRONG SOUTHERLY WINDS SHOULD SUBSIDE THIS AFTERNOON.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 5:09 AM CST | Severe Thunderstorm Warning | MOB | Clarke | 36 min |
| Mar 29, 7:09 AM CST | Severe Thunderstorm Warning | MOB | Dallas | 51 min |
| Mar 29, 7:09 AM CST | Severe Thunderstorm Warning | MOB | Elmore | 51 min |
| Mar 29, 9:00 AM CST | Severe Thunderstorm Warning | MOB | Lee, Macon | 45 min |
| Mar 29, 11:49 AM CST | Tornado Warning | MOB | Bullock, Montgomery | 26 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.