Alert archive / Alabama / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 141, NWS Mobile, AL

July 2, 1990Monroe County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Jul 2, 1990, 4:37 PM CDT for Monroe County, Alabama. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Jul 2, 1990, 4:37 PM CDT (21:37 UTC)
Expired
Jul 2, 1990, 5:45 PM CDT
In force
68 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Monroe County, AL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 9.6 hours before the alert went out and 149 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, Centreville/Bibb, AL at 12:00Z on 1990-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1129 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Centreville/Bibb, AL at 12:00Z on 1990-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 square meters per square second.1939Sfc1 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
1129 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1374 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
19 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 022138
SVRMOB
ALC099-022245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
437 PM CDT MON JUL 2 1990
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST ALABAMA
 
   ...MONROE COUNTY
 
AT 435 PM CDT THE MOBILE RADAR INDICATED A SEVERE THUNDERSTORM 10
MILES NORTH OF BEATRICE MOVING TOWARD THE SOUTH AT 20 MPH. THIS STORM
WILL PASS NEAR BEATRICE WITHIN THE NEXT 30 MINUTES AND APPROACH
PETERMAN WITHIN 45 MINUTES.
 
DAMAGING WINDS AND LARGE HAIL IS LIKELY WITH THIS THUNDERSTORM.
 
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, Jul 2, 2:23 PM CDT, 2 hours 14 minutes before
ALZ013-015-016-022130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
222 PM CDT MON JUL 2 1990

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL SOUTHWEST
ALABAMA COUNTIES UNTIL 800 PM CDT...

THE MARINE WARNING FOR THE ALABAMA AND MISSISSIPPI COASTAL WATERS
EXPIRED AT 215 PM.  ADDITIONAL WARNINGS MAY BE REQUIRED LATER THIS
AFTERNOON.

AT 217 PM THE MOBILE RADAR SHOWED A LINE OF THUNDERSTORMS DEVELOPING
ALONG THE WESTERN SHORE OF MOBILE BAY IN MOBILE COUNTY.  ANOTHER
STRONG THUNDERSTORM WAS LOCATED NEAR GULF SHORES ALABAMA.  THE
THUNDERSTORMS WERE SHOWING LITTLE MOVEMENT...JUST A SLIGHT SOUTHWARD
DRIFT.

ANOTHER SCATTERED AREA OF THUNDERSTORMS IS DEVELOPING ACROSS
CLARKE...CONECUH...MONROE AND ESCAMBIA COUNTIES OF ALABAMA.  THESE
THUNDERSTORMS WERE MOVING TOWARD THE SOUTH-SOUTHEAST AT 15 MPH.  VERY
STRONG THUNDERSTORMS FURTHER TO THE NORTH WILL AFFECT THESE COUNTIES
LATER IN THE AFTERNOON.

RESIDENTvS OF ALL SOUTHWEST ALABAMA COUNTIES SHOULD REMAIN ALERT FOR
THE POSSIBILITY OF SEVERE WEATHER THIS AFTERNOON AND BE PREPARED TO
SEEK SHELTER.
Special weather statement, Jul 2, 2:38 PM CDT, 1 hour 59 minutes before
FLZ001>004-022030-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
235 PM CDT MON JUL 02 1990

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 800 PM CDT...

THUNDERSTORMS...SOME WITH VERY HEAVY RAINS AND GUSTY WINDS...WERE
SCATTERED OVER THE FLORIDA PANHANDLE...SOUTH AND SOUTHWEST ALABAMA...
AND THE ADJOINING COASTAL WATERS.
THE STRONGER THUNDERSTORMS WERE JUST SOUTHWEST OF THE PENSACOLA NAVAL
AIR STATION...BETWEEN MOBILE AND FOLEY...NEAR CHATTAHOOCHEE...AND
SCATTERED BETWEEN BREWTON AND DOTHAN.
THE THUNDERSTORMS WERE MOVING SOUTH AT 20 MILES AN HOUR.

THE STRONGER THUNDERSTORMS WILL PRODUCE PERIODS OF VERY HEAVY RAINS
REDUCING VISIBILITY AND CREATING BRIEF FLOODING OF POOR DRAINAGE AREAS
...GUSTY WINDS...FREQUENT LIGHTNING...POSSIBLE HAIL...AND FOR MARINE
INTERESTS THE ADDITIONAL ROUGH SEAS.
PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR THESE CONDITIONS
...AND KEEP ABREAST OF WEATHER CONDITIONS DURING THE SEVERE THUNDER-
STORM WATCH PERIOD.
Special weather statement, Jul 2, 3:39 PM CDT, 58 minutes before
FLZ001>004-022130-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
335 PM CDT MON JUL 02 1990

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 800 PM CDT...

THUNDERSTORMS...SOME WITH VERY HEAVY RAINS AND GUSTY WINDS...WERE
SCATTERED OVER THE FLORIDA PANHANDLE...SOUTH AND SOUTHWEST ALABAMA...
AND THE ADJOINING COASTAL WATERS...AND EXTENDED INTO SOUTHWEST GEORGIA.

THE STRONGER THUNDERSTORMS WERE SCATTERED BETWEEN BREWTON AND DOTHAN...
AND BETWEEN PANAMA CITY AND TALLAHASSEE.
THE THUNDERSTORMS WERE MOVING SOUTH AT 20 MILES AN HOUR.

THE STRONGER THUNDERSTORMS WILL PRODUCE PERIODS OF VERY HEAVY RAINS...
BRIEF FLOODING OF POOR DRAINAGE AREAS...GUSTY WINDS._..FREQUENT
LIGHTNING...POSSIBLE HAIL...AND ROUGH SEAS FOR MARINE INTERESTS.
PERSONS SHOULD TAKE ANY NECESSARY PRECAUTIONS FOR THESE CONDITIONS.
KEEP ABREAST OF CURRENT WEATHER DEVELOPMENTS.
Special weather statement, Jul 2, 3:53 PM CDT, 44 minutes before
ALZ013-015-016-022300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
352 PM CDT MON JUL 2 1990

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF SOUTHWEST
ALABAMA UNTIL 800 PM...

THE MOBILE RADAR AT 350 PM INDICATED A FEW THUNDERSHOWERS AROUND THE
MOBILE AREA WITH LITTLE MOVEMENT...A FEW THUNDERSTORMS MOVING
SOUTHEASTWARD ACROSS CONECUH AND MONROE COUNTIES...AND THEN A LARGE
AREA OF SEVERE THUNDERSTORMS ACROSS WEST CENTRAL AND CENTRAL ALABAMA
MOVING TOWARD THE SOUTH-SOUTHEAST AT 20 MPH.

THE STRONG THUNDERSTORMS ACROSS WEST-CENTRAL ALABAMA WILL MOVE SOUTH
INTO CLARKE...MONROE AND CONECUH COUNTIES DURING THE NEXT TWO HOURS.
IT IS LIKELY THAT WARNINGS WILL BE |REQUIRED FOR PORTIONS OF THOSE
COUNTIES.

RESIDENTS OF SOUTHWEST ALABAMA SHOULD REMAIN ALERT FOR THE POSSIBILITY
OF SEVERE WEATHER THE REMAINDER OF THE AFTERNOON AND INTO THE EVENING.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 1:11 PM CDTSevere Thunderstorm WarningMOBMobile64 min
Jul 2, 1:45 PM CDTSevere Thunderstorm WarningMOBElmore60 min
Jul 2, 2:07 PM CDTSevere Thunderstorm WarningMOBMontgomery68 min
Jul 2, 3:15 PM CDTSevere Thunderstorm WarningMOBDallas60 min
Jul 2, 3:47 PM CDTSevere Thunderstorm WarningMOBTallapoosa43 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; the sounding from the Mesonet's radiosonde archive.