Alert archive / Alabama / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 9, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Mar 29, 1991, 7:09 AM CST for Elmore County, Alabama. It was in force for 51 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, 7:09 AM CST (13:09 UTC)
- Expired
- Mar 29, 1991, 8:00 AM CST
- In force
- 51 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Elmore County, AL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 29, 7:15 AM CST | Thunderstorm Wind 0 | Elmore, 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, 1.2 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
- 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
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMGM 291312 SVRMGM ALC047-051-291400- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MONTGOMERY AL 709 AM CST FRI MAR 29 1991 THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 800 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH ALABAMA ...DALLAS COUNTY...ELMORE COUNTY WEATHER RADAR AT MONTGOMERY SHOWED SEVERE THUNDERSTORMS JUST WEST OF SELMA AND IN NORTHERN ELMORE COUNTY MOVING TOWARD THE EAST NORTHEAST AT NEAR 50 MILES AN HOUR. 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, 1:10 AM CST, 5 hours 59 minutes before
MSZ014-290900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 105 AM CST FRI MAR 29 1991 ...TORNADO WATCH NUMBER 83 IN EFFECT UNTIL 400 AM CST FOR PERSONS IN GREENE...PEARL RIVER...AND PERRY COUNTIES IN SOUTHEAST MISSISSIPPI... NO SEVERE WEATHER HAS OCCURRED IN SOUTHEAST MISSISSIPPI. AT 100 AM MOBILE RADAR INDICATED ONLY WIDELY SCATTERED SHOWERS IN SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA. OTHER NATIONAL WEATHER SERVICE RAD"ARS INDICATED SEVERE THUNDERSTORMS IN CENTRAL MISSISSIPPI...AND VERY STRONG THUNDERSTORMS EXTENDED FROM NEAR NATCHEZ TO THE TEXAS COAST. THIS SYSTEM MAY MOVE INTO SOUTHEAST MISSISSIPPI BEFORE DAYBREAK.
Special weather statement, Mar 29, 3:22 AM CST, 3 hours 47 minutes before
MSZ014-291100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 315 AM CST FRI MAR 29 1991 ...TORNADO WATCH NUMBER 83 IN EFFECT UNTIL 400 AM CST FOR PERSONS IN GREENE...PEARL RIVER...AND PERRY COUNTIES IN SOUTHEAST MISSISSIPPI... NO SEVERE WEATHER HAS OCCURRED IN SOUTHEAST MISSISSIPPI. AT 300 AM MOBILE RADAR INDICATED SCATTERED SHOWERS IN SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA. THE HEAVIEST SHOWER WAS LOCATED OVER THE NORTHEAST CORNER OF GREENE COUNTY MISSISSIPPI. THE SHOWERS WERE INCREASING IN COVERAGE AND STRENGTH WHILE MOVING TO THE NORTHEAST AT 40 MPH. OTHER NATIONAL WEATHER SERVICE RADARS INDICATED VERY STRONG THUNDERSTORMS EXTENDED FROM NEAR TUSCALOOSA ALABAMA TO NEAR LAKE CHARLES LOUISIANA.
Special weather statement, Mar 29, 3:59 AM CST, 3 hours 10 minutes before
MSZ014-013-291200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 357 AM CST FRI MAR 29 1991 ...TORNADO WATCH NUMBER 85 IN EFFECT UNTIL 900AM CST FOR ALL COUNTIES IN SOUTHEAST MISSISSIPPI AND THE ADJACENT COASTAL WATERS... NO SEVERE WEATHER HAS OCCURED IN SOUTHEAST MISSISSIPPI. AT 345 AM MOBILE RADAR INDICATED SCATTERED SHOWERS OVER SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA. THE STRONGEST SHOWERS WERE LOCATED OVER GREENE COUNTY MISSISSIPPI. THE SHOWERS WERE INCREASING IN BOTH STRENGTH AND COVERAGE WHILE MOVING TO THE NORTHEAST AT 40 MPH. OTHER NATIONAL WEATHER SERVICE RADARS INDICATED VERY STRONG THUNDERSTORMS EXTENDING FROM NEAR TUSCALOOSA ALABAMA TO NEAR LAKE. CHARLES LOUISIANA
Special weather statement, Mar 29, 5:59 AM CST, 1 hour 10 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.
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, 9:00 AM CST | Severe Thunderstorm Warning | MOB | Lee, Macon | 45 min |
| Mar 29, 11:26 AM CST | Severe Thunderstorm Warning | MOB | Crenshaw | 34 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.