Alert archive / Alabama / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 39, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Apr 20, 1992, 10:23 AM CDT for Marengo County, Alabama. It was in force for 67 min.
The area
The counties it named.
The facts
- Issued
- Apr 20, 1992, 10:23 AM CDT (15:23 UTC)
- Expired
- Apr 20, 1992, 11:30 AM CDT
- In force
- 67 min
- Issued by
- NWS Birmingham, AL
- Area
- Whole counties
County Marengo County, AL
The nearest sounding before it
Centreville/Bibb, AL (KCKL), launched 12:00Z, 3.4 hours before the alert went out and 91 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
- 11 J/kg
- Mixed-layer CIN
- -209 J/kg
- Mixed-layer LCL
- 650 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 185 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBHM 201524 SVRBHM ALC091-201630- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 1023 AM CDT MON APR 20 1992 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1130 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH ALABAMA ...MARENGO COUNTY AT 1020 AM CDT A SEVERE THUNDERSTORM WAS MOVING INTO MARENGO COUNTY. THIS STORM WAS MOVING EAST NORTHEAST AT 25 MPH AND SHOULD ENTER WESTERN MARENGO COUNTY AROUND 10:30 AM CDT. THIS STORM SHOULD AFFECT LINDEN AND DEMOPOLIS BY ABOUT 1045 AM CDT. 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, Apr 20, 5:07 AM CDT, 5 hours 16 minutes before
ALZ001>016-FLZ001>004-201500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 505 AM CDT MON APR 20 1992 ...SEVERE THUNDERSTORMS POSSIBLE ACROSS ALABAMA AND NORTHWEST FLORIDA LATER TODAY AND TONIGHT... ALL THE INGREDIENTS ARE COMING INTO PLACE FOR AN OUTBREAK OF SEVERE THUNDERSTORMS ACROSS ALABAMA AND NORTHWEST FLORIDA. A WARM... MOIST...UNSTABLE AIRMASS AT THE SURFACE WITH AN APPROACHING COLD FRONT... STRONG WINDS ALOFT...AND A SERIES OF UPPER LEVEL DISTURBANCES WILL ALL INTERACT TO LIKELY PRODUCE WIDESPREAD THUNDERSTORMS...SOME OF WHICH WILL LIKELY BECOME SEVERE AND POSSIBLY PRODUCE TORNADOES. ALTHOUGH ITS STILL A LITTLE TOO SOON TO PINPOINT EXACTLY WHEN AND WHERE THE STORMS WILL FIRE UP...BEST ESTIMATES ARE THAT WESTERN PORTIONS OF THE REGION MAY BE AFFECTED BY LATE THIS AFTERNOON...AND ALL OF ALABAMA AND NORTHWEST FLORIDA TONIGHT. IN ADDITION TO THE THREAT OF TORNADOES...DAMAGING WIND...AND LARGE HAIL... THE THUNDERSTORMS WILL ALSO BRING HEAVY RAIN. RAINFALL AMOUNTS OF UP TO 3 TO 4 INCHES ARE POSSIBLE NEAR THE ALABAMA/NORTHWEST FLORIDA COAST... WHILE 1 TO 2 INCH AMOUNTS ARE POSSIBLE ELSEWHERE. EVERYONE ACROSS THE REGION IS URGED TO KEEP UPDATED ONE THE WEATHER SITUATION DEVELOPING TODAY...BY FREQUENTLY TUNING INTO LOCAL NEWS OR RADIO...OR THE NATIONAL WEATHER SERVICE'S OWN NOAA WEATHER RADIO.
Special weather statement, Apr 20, 8:42 AM CDT, 1 hour 41 minutes before
ALZ004>0009-013-201430-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
840 AM CDT MON APR 20 1992
...TORNADO WATCH NUMBER 158 IN EFFECT FOR A LARGE PART OF
WEST CENTRAL AND SOUSpecial weather statement, Apr 20, 9:22 AM CDT, 1 hour 1 minute before
ALZ004>0009-013-201515-
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
920 AM CDT MON APR 20 1992
...TORNADO WATCH NUMBER 158 IN EFFECT FOR A LARGE PART OF
WEST CENTRAL AND SOUTHWEST ALABAMA UNTIL 200 PM CDT...
A WARM UNSTABLE AIRMASS WITH AN APPROACHING COLD FRONT ARE PROVIDING
THE RIGHT INGREDIENTS FOR STRONG THUNDERSTORMS TO DEVELOP OVER ALABAMA
THIS MORNING AND AFTERNOON. SEVERE THUNDERSTORMS HAVE ALREADY PRODUCED
WIND DAMAGE OVER PARTS OF SOUTH CENTRAL MISSISSIPPI EARLIER THIS
MORNING. MORE STRONG...POSSIBLY SEVERE...THUNDERSTORMS ARE EXPECTED
TO MOVE INTO WEST AND SOUTHWEST ALABAMA THIS MORNING.
AT 920 AM THE STRONGEST THUNDERSTORMS WERE MOVING CLOSER TO THE ALABAMA
BORDER AND WERE MOVING THROUGH THE MERIDIAN MS AREA. IT APPEARS THAT
THE STRONGEST THUNDERSTORMS WILL MOVE FIRST INTO LAMAR...PICKENS...
SUMTER AND CHOCTAW COUNTIES BETWEEN 930 AND 1030 AM. THESE THUNDERSTORMS
WILL PRODUCE STRONG...POSSIBLY DAMAGING WINDS...HEAVY RAIN...
LIGHTNING...AND POSSIBLY HAIL. MONITOR NOAA WEATHER RADIO...
OR COMMERCIAL RADIO OR TELEVISION FOR FURTHER DEVELOPMENTS.
BE READY TO MOVE TO A SAFE PLACE IF THREATENING WEATHER IS
SIGHTED OR A WARNING IS ISSUED.Special weather statement, Apr 20, 10:10 AM CDT, 13 minutes before
ALZ010-011-012-014-017-018-201600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MONTGOMERY AL 1000AM CDT MON APR 20 1992 ...TORNADO WATCH NUMBER 158 REMAINS IN EFFECT UNTIL 2PM CDT FOR PARTS OF ALABAMA... WEATHER RADAR AT MONTGOMERY SHOWED STRONG THUNDERSTORMS MOVING INTO WEST ALABAMA AT 10AM CDT. THE STORMS WERE MOVING TOWARD THE NORTHEAST AT ABOUT 40 MPH. AT THE PRESENT RATE OF MOVEMENT STRONG STORMS WILL BE ENTERING DALLAS AND WILCOX COUNTIES AROUND 11 TO 1130AM CDT. PERSONS IN THE WATCH AREAS SHOULD REMAIN ON THE ALERT. WATCHES MAY BE REQUIRED FOR OTHER SECTIONS OF SOUTH ALABAMA DURING THE DAY AS THE POTENTIAL FOR SEVERE WEATHER IS HIGH. STAY TUNED TO LOCAL RADIO AND TV OR NOAA WEATHER RADIO FOR THE LATEST INFORMATION.
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 10:16 AM CDT | Severe Thunderstorm Warning | BMX | Greene | 44 min |
| Apr 20, 10:19 AM CDT | Severe Thunderstorm Warning | BMX | Pickens | 41 min |
| Apr 20, 10:43 AM CDT | Severe Thunderstorm Warning | BMX | Hale, Tuscaloosa | 62 min |
| Apr 20, 11:12 AM CDT | Tornado Warning | BMX | Tuscaloosa | 48 min |
| Apr 20, 11:15 AM CDT | Severe Thunderstorm Warning | BMX | Fayette | 60 min |
| Apr 20, 11:29 AM CDT | Severe Thunderstorm Warning | BMX | Jefferson, Walker | 61 min |
| Apr 20, 11:47 AM CDT | Severe Thunderstorm Warning | BMX | Cullman | 58 min |
| Apr 20, 11:51 AM CDT | Severe Thunderstorm Warning | BMX | Winston | 54 min |
| Apr 20, 12:00 PM CDT | Severe Thunderstorm Warning | BMX | Shelby | 60 min |
| Apr 20, 12:11 PM CDT | Severe Thunderstorm Warning | BMX | Lawrence, Morgan | 64 min |
| Apr 20, 12:41 PM CDT | Severe Thunderstorm Warning | BMX | Blount | 54 min |
| Apr 20, 2:43 PM CDT | Severe Thunderstorm Warning | BMX | Cherokee | 32 min |
| Apr 20, 4:52 PM CDT | Severe Thunderstorm Warning | BMX | Clay, Randolph | 68 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 1992Every severe thunderstorm warning in 1992
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.