Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 96, NWS Mobile, AL

April 22, 1990Jackson County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Apr 22, 1990, 3:23 PM CDT for Jackson County, Mississippi. It was in force for 52 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
Apr 22, 1990, 3:23 PM CDT (20:23 UTC)
Expired
Apr 22, 1990, 4:15 PM CDT
In force
52 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Jackson County, MS

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

TimeReportWhereRemark
Apr 22, 3:50 PM CDTHail 1.75Jackson, MS

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

Slidell Radar S, LA (KSIL), launched 12:00Z, 8.4 hours before the alert went out and 106 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.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 1990-04-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 371 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 1990-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
371 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
715 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMOB 222023
SVRMOB
MSC059-222115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
323 PM CDT SUN APR 22 1990
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  415 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST MISSISSIPPI
 
   ...JACKSON COUNTY
 
 
 
 
AT 320 PM...MOBILE RADAR INDICATED A SEVERE THUNDERSTORM NEAR VANCLEVE
IN JACKSON COUNTY. THE STORM WAS MOVING SLOWLY SOUTH.
 
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, Apr 22, 12:00 PM CDT, 3 hours 23 minutes before
ALZ013-015-016-MSZ014-013-221900

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
1200 PM CDT SUN APR 22 1990

...STRONG THUNDERSTORMS DEVELOPING OVER INTERIOR SOUTHWEST ALABAMA
   AND SOUTHEAST MISSISSIPPI...

AT 1155 AM CDT MOBILE RADAR SHOWED SCATTERED THUNDERSTORMS OVER MUCH
OF SOUTHWEST ALABAMA AND SOUTHEAST MISSISSIPPI...EXCEPT FOR THE COASTAL
AREA.  THUNDERSTORMS WERE MOVING TOWARD THE EAST SOUTHEAST AT 15 MPH.

STRONGER THUND:ERSTORMS WILL CAUSE GUSTY WINDS...DANGEROUS LIGHTNING...
BRIEF HEAVY RAINFALL AND POSSIBLY SOME SMALL HAIL. THE STRONGER STORMS
WERE LOCATED NEAR BREWTON AND CALVERT IN SOUTHWEST ALABAMA AND MAINLY
OVER GREENE AND PERRY COUNTIES IN MISSISSIPPI.
Special weather statement, Apr 22, 1:31 PM CDT, 1 hour 52 minutes before
FLZ001-002-150740-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
125 PM CDT SUN APR 22 1990

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 8 PM CDT FOR
PORTIONS OF SOUTHEAST MISSISSIPPI...SOUTHWEST ALABAMA...A SMALL
PORTION OF NORTHWEST FLORIDA...AND THE ADJACENT COASTAL WATERS. THE
NORTHWEST FLORIDA COUNTIES IN THIS WATCH AREA ARE ESCAMBIA...SANTA ROSA
AND OKALOOSA.

AT 125 PM CDT...NUMEROUS THUDERSTORMS...SOME VERY STRONG AND WITH HEAVY
RAIN...STRETCHED FROM NEAR LAUREL MISSISSIPPI SOUTHEAST ACROSS NORTH
MOBILE AND BALDWIN COUNTIES OF ALABAMA...THEN OVER THE WESTERNMOST
COUNTIES OF NORTHWEST FLORIDA. STRONGEST STORMS WERE OVER NORTH SANTA
ROSA COUNTY OF FLORIDA AND JUST NORTH OF MOBILE.

MOVEMENTS WERE TOWARD THE SOUTHEAST AND SOUTH NEAR 15 MILES AN HOUR.
Local storm report, Apr 22, 2:07 PM CDT, 1 hour 16 minutes before
ATTN SELS
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
205 PM CDT SUN APR 22 1990

TIME      CO/STATE            EVENT
200 PM    MOBILE/AL           1 INCH HAIL COVERING THE GROUND IN
                              PRICHARD. IT HAS BEEN HAILING FOR AT
                              LEAST THE LAST 15 MINUTES. REPORTED BY
                              PRICHARD P.D.
Special weather statement, Apr 22, 2:32 PM CDT, 51 minutes before
ALZ016-2221000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
230 PM CDT SUN APR 22 1990

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 800 PM...
...STRONG THUNDERSTORMS RUMBLING THROUGH CENTRAL MOBILE COUNTY...

AT 225 PM...A CLUSTER OF VERY STRONG THUNDERSTORMS WAS SINKING SLOWLY
SOUTH THROUGH CENTRAL MOBILE COUNTY ALABAMA. THE STRONGEST THUNDER-
STORMS WERE LOCATED FROM NEAR DOWNTOWN MOBILE WEST TO TILLMAN'S
CORNER.

THE STORMS WERE STRONG ENOUGH TO COVER THE GROUND WITH MARBLE SIZE AND
BIGGER HAIL AS THEY MOVED THROUGH SARALAND.

PEOPLE IN SOUTH MOBILE COUNTY SHOULD MONITOR THE WEATHER UNTIL THESE
STORMS MOVE THROUGH.
Special weather statement, Apr 22, 2:33 PM CDT, 50 minutes before
FLZ001-002-150740-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
225 PM CDT SUN APR 22 1990

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 8 PM CDT FOR
PORTIONS OF SOUTHEAST MISSISSIPPI...SOUTHWEST ALABAMA...A SMALL
PORTION OF NORTHWEST FLORIDA...AND THE ADJACENT COASTAL WATERS. THE
NORTHWEST FLORIDA COUNTIES IN THIS WATCH AREA ARE ESCAMBIA...SANTA ROSA
AND OKALOOSA.

AT 225 PM CDT...NUMEROUS THUDERSTORMS...SOME VERY STRONG AND WITH HEAVY
RAIN...STRETCHED FROM NEAR LAUREL MISSISSIPPI SOUTHEAST ACROSS MOBILE
MOBILE AND WASHINGTON COUNTIES OF ALABAMA...THEN OVER NORTHWEST FLORIDA.
STRONGEST STORMS OVER NORTHWEST FLORIDA STRETCHED FROM NORTH ESCAMBIA
COUNTY SOUTHEAST ACROSS MILTON TO NEAR FORT WALTON.

MOVEMENTS WERE TOWARD THE SOUTHEAST AND SOUTH NEAR 15 MILES AN HOUR.

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 22, 4:11 PM CDTSevere Thunderstorm WarningMOBHarrison49 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 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.