Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 120, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at May 21, 1990, 4:30 PM CDT for Escambia County, Alabama. It was in force for 30 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
- May 21, 1990, 4:30 PM CDT (21:30 UTC)
- Expired
- May 21, 1990, 5:00 PM CDT
- In force
- 30 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Escambia County, AL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 21, 4:32 PM CDT | Hail 0.75 | Escambia, 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, 9.5 hours before the alert went out and 197 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
- 173 J/kg
- Mixed-layer CIN
- -336 J/kg
- Mixed-layer LCL
- 1194 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMOB 212129 SVRMOB ALC053-212200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 430 PM CDT MON MAY 21 1990 THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 500 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTHWEST ALABAMA ...ESCAMBIA COUNTY AT 430 PM...A SEVERE THUNDERSTORM WAS LOCATED NEAR BREWTON IN ESCAMBIA COUNTY. IT WAS MOVING SOUTHEAST AT 30 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
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, May 21, 1:55 PM CDT, 2 hours 35 minutes before
ALZ013-015-016-MSZ014-013-212000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 155 PM CDT MON MAY 21 1990 ...SEVERE THUNDERSTORM WATCH NUMBER 294 REMAINS IN EFFECT FOR PERRY AND GREENE COUNTIES IN SOUTHEAST MISSISSIPPI UNTIL 500 PM... ...SEVERE THUNDERSTORM WATCH NUMBER 295 REMAINS IN EFFECT UNTIL 800 PM FOR ALL COUNTIES IN SOUTHWEST ALABAMA... AT 150 PM A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM NEAR MONTGOMERY TO NEAR WHATLEY IN CLARKE COUNTY ALABAMA. THESE STORMS WERE MOVING EAST AT 25 MPH. THE STRONGEST THUNDERSTORM WAS LOCATED NEAR WHA MARBLE SIZED HAIL WAS REPORTED EARLIER IN CENTRAL CLARKE COUNTY. ANOTHER LINE OF STRONG THUNDERSTORMS WAS MOVING SOUTHEAST THROUGH SOUTHEAST MISSISSIPPI. IT WAS LOCATED FROM NEAR CRANDALL TO SUMRALL TO SOUTH OF MCCOMB. THE STRONGEST THUNDERSTORM WAS LOCATED NEAR ELLISVILLE IN JONES COUNTY. A WIND GUST LINE MAY STILL BE 10 TO 15 MILES AHEAD OF THE THUNDERSTORMS IN S OUTHEAST MISSISSIPPI. WIND GUSTS TO NEAR 50 MPH WERE REPORTED EARLIER. PEOPLE IN THE WATCH AREA SHOULD REMAIN WEATHER CONSCIOUS THIS AFTERNOON AS THESE THUNDERSTORMS MOVE THROUGH.
Local storm report, May 21, 3:35 PM CDT, 55 minutes before
ATTN SELS STORM REPORT NATIONAL WEATHER SERVICE MOBILE AL 335 PM CDT MON MAY 21 1990 THE GROVE HILL PD REPORTED THAT POWER LINES WERE DOWN NEAR THAT CITY AT APPROXIMATELY 300 PM...IN CLARKE COUNTY ALABAMA.
Local storm report, May 21, 3:46 PM CDT, 44 minutes before
ATTN SELS STORM REPORT NATIONAL WEATHER SERVICE MOBILE AL 345 PM CDT MON MAY 21 1990 EVERGREEN STATE TROOPERS REPORTED MARBLE SIZED HAIL IN MONROEVILLE, MONROEVILLE COUNTY ALABAMA.
Local storm report, May 21, 3:47 PM CDT, 43 minutes before
ATTN SELS STORM REPORT NATIONAL WEATHER SERVICE MOBILE AL 345 PM CDT MON MAY 21 1990 EVERGREEN STATE TROOPERS REPORTED MARBLE SIZED HAIL IN MONROEVILLE, MONROE COUNTY ALABAMA.
Special weather statement, May 21, 3:48 PM CDT, 42 minutes before
FLZ001-002-003-004-212130- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 335 PM CDT MON MAY 21 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR ALL COUNTIES IN THE FLORIDA PANHANDLE UNTIL 9 PM... ...STRONG THUNDERSTORMS WERE MOVING THROUGH SOUTH ALABAMA AND SOUTHEAST MISSISSIPPI... AT 330 PM CDT...STRONG THUNDERSTORMS WERE OVER SOUTH ALABAMA AND SOUTH- EAST MISSISSIPPI...WITH THE STRONGER STORMS OVER A 15 MILE WIDE LINE FROM NEAR MONROEVILLE IN MONROE COUNTY TO 40 MILES NORTHWEST OF MOBILE. WITH SCATTERED STRONG THUNDERSTORMS OVER SOUTHEAST ALABAMA BETWEEN DOTHAN AND MONTGOMERY...AND FROM ANDALUSIA TO ENTERPRISE. THE LINE OF THUNDERSTORMS WAS MOVING SOUTHEAST AT 25 MILES AN HOUR... WITH THE INDIVIDUAL THUNDERSTORMS MOVING NORTHEAST AT 30 MILES AN HOUR. THE STRONGER THUNDERSTORMS ARE CAPABLE OF PRODUCING PERIODS OF VERY HEAVY RAINS...GUSTY WINDS...FREQUENT LIGHTNING STRIKES...AND HAIL. PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR THESE CONDITIONS AND BE ON THE ALERT FOR POSSIBLE SEVERE WEATHER CONDITIONS WHILE THE THUNDERSTORMS CONTINUE IN THE AREA.
Special weather statement, May 21, 3:57 PM CDT, 33 minutes before
ALZ016-MSZ013-212200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 357 PM CDT MON MAY 21 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 900 PM TONIGHT... AT 340 PM...A LINE OF STRONG THUNDERSTORMS EXTENDED FROM MONROEVILLE TO CITRONELLE IN ALABAMA...AND FROM LUCEDALE TO PICAYUNE IN MISSISSIPPI. THE LINE WAS MOVING SOUTHEAST AT 30 MPH. THUNDERSTORMS WILL BE MOVING INTO THE GULFPORT-BILOXI AND MOBILE AREA AROUND 430 PM...AND INTO THE PASCAGOULA AREA BETWEEN 430 AND 500 PM. HIGH WINDS...HAIL...AND STRONG WINDS ARE POSSIBLE WHEN THE THUNDERSTORMS MOVE THROUGH. PEOPLE IN THE WATCH AREA SHOULD MONITOR NOAA WEATHER RADIO OR LOCAL RADIO OR T.V. UNTIL THE STORMS MOVE THROUGH.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 12:11 PM CDT | Severe Thunderstorm Warning | MOB | Coosa | 64 min |
| May 21, 12:29 PM CDT | Severe Thunderstorm Warning | MOB | Tallapoosa | 61 min |
| May 21, 12:42 PM CDT | Severe Thunderstorm Warning | MOB | Dallas, Wilcox | 63 min |
| May 21, 1:47 PM CDT | Severe Thunderstorm Warning | MOB | Montgomery | 43 min |
| May 21, 2:29 PM CDT | Severe Thunderstorm Warning | MOB | Lee | 61 min |
| May 21, 2:39 PM CDT | Severe Thunderstorm Warning | MOB | Clarke, Washington | 51 min |
| May 21, 2:43 PM CDT | Severe Thunderstorm Warning | MOB | Covington | 62 min |
| May 21, 2:52 PM CDT | Severe Thunderstorm Warning | MOB | Coffee | 68 min |
| May 21, 3:06 PM CDT | Severe Thunderstorm Warning | MOB | Pike | 69 min |
| May 21, 3:16 PM CDT | Severe Thunderstorm Warning | MOB | Henry | 59 min |
| May 21, 3:55 PM CDT | Severe Thunderstorm Warning | MOB | Barbour | 65 min |
| May 21, 4:59 PM CDT | Severe Thunderstorm Warning | MOB | Coffee, Covington | 61 min |
| May 21, 5:27 PM CDT | Severe Thunderstorm Warning | MOB | Geneva, Houston | 63 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 1990Every severe thunderstorm warning in 1990
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.