Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 122, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at May 21, 1990, 5:27 PM CDT for Geneva County, Houston County, Alabama. It was in force for 63 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, 5:27 PM CDT (22:27 UTC)
- Expired
- May 21, 1990, 6:30 PM CDT
- In force
- 63 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
Counties Geneva County, AL, Houston 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, 5:40 PM CDT | Hail 0.75 | Geneva, 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
Apalachicola Mun, FL (KAQQ), launched 12:00Z, 10.5 hours before the alert went out and 164 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
- 2077 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 759 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMGM 212232 SVRMGM ALC061-069-212330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MONTGOMERY AL 527 PM CDT MON MAY 21 1990 THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 630 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH ALABAMA ...GENEVA COUNTY...HOUSTON COUNTY WEATHER SERVICE RADAR IN MONTGOMERY HAS OBSERVED A SEVERE THUNDERSTORM FROM WEST OF WICKSBURG TO GENEVA ALABAMA. THE THUNDERSTORMS ARE MOVING EAST AT 30 MILES AN HOUR. THESE STORMS HAVE HAD A HISTORY OF LEAVING ONE-HALF TO ONE INCH HAIL. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUI8LDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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
Local storm report, May 21, 3:47 PM CDT, 1 hour 40 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, 1 hour 39 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, 1 hour 30 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.
Local storm report, May 21, 4:38 PM CDT, 49 minutes before
ATTN SELS
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
435 PM CDT MON MAY 21 1990
400 PM PEA SIZED HAIL REPORTED IN NORTHERN MOBILE
COUNTY AL.
415 PM MARBLE SIZED HAIL 5 MILES SOUTH OF EVERGREEN IN CONECUH
COUNTY, AL. REPORTED BY EVERGREEN STATE TROOPERS.
430 PM BALDWIN COUNTY EOC REPORTED A WATERSPROUT IN MOBILE BAY
JUST OFF DAPHNE. THE WATERSPOUT DISSIPATED BEFORE MOVING
ON SHORE.Special weather statement, May 21, 4:41 PM CDT, 46 minutes before
FLC033-192245- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PENSACOLA FL 445 PM CDT SAT MAY 19 1990 A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9PM CDT FOR ALL OF THE COUNTIES IN THE WESTERN FLORIDA PANHANDLE. AT 4:30PM CDT...RADAR INDICATED A LINE OF THUNDERSTORMS...SOME VERY STRONG...ACROSS SOUTHERN AND SOUTHWEST ALABAMA. THE LINE STRETCHED FROM NEAR TROY IN SOUTHEAST ALABAMA...SOUTHWEST TO MOBILE AND GULFPORT MISSISSIPPI. MOVEMENT WAS SOUTHEAST 25 TO 30 MILES AN HOUR AND WAS NEARING THE NORTHWEST CORNER OF ESCAMBIA COUNTY FLORIDA. DURING THE AFTERNOON...THIS LINE OF THUNDERSTORMS HAS PRODUCED FROM PEA TO GOLF BALL SIZE HAIL IN PARTS OF MISSISSIPPI AND ALABAMA. PERSONS IN NORTHWEST FLORIDA SHOULD BE ALERT FOR RAPIDLY CHANGEING WEATHER CONDITIONS AS THE THUNDERSTORMS NEAR AND BE PREPARED TO MOVE TO A SAFE PLACE QUICKLY.
Special weather statement, May 21, 5:12 PM CDT, 15 minutes before
ALZ016-212315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOBILE AL 513 PM CDT MON MAY 21 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 900 PM... AT 515 PM A LINE OF STRONG THUNDERSTORMS EXTENDED FROM GATESWOOD TO FAIRHOPE IN BALDWIN COUNTY. THE LINE THEN STRETCHED ACROSS MOBILE BAY THROUGH SOUTHERN MOBILE COUNTY AND INTO THE MISSISSIPPI COASTAL WATERS. WIND GUSTS TO 40 MPH CAN BE EXPECTED AS THESE STORMS MOVE THROUGH SOUTHER N BALDWIN COUNTY AND SOUTHERN MOBILE COUNTY IN THE NEXT HALF HOUR. HEAVY RAIN FOR UP TO 1/2 AN HOUR CAN ALSO BE EXPECTED. AFTER THE HEAVY RAIN ENDS...LIGHT TO MODERATE RAIN CAN BE EXPECTED FOR AN HOUR OR TWO.
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, 4:30 PM CDT | Severe Thunderstorm Warning | MOB | Escambia | 30 min |
| May 21, 4:59 PM CDT | Severe Thunderstorm Warning | MOB | Coffee, Covington | 61 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.