Alert archive / Alabama / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 152, NWS Mobile, AL

August 5, 1990Escambia County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Aug 5, 1990, 3:10 PM CDT for Escambia County, Alabama. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
Aug 5, 1990, 3:10 PM CDT (20:10 UTC)
Expired
Aug 5, 1990, 4:00 PM CDT
In force
50 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.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 8.2 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.

Skew-T log-pSkew-T log-p diagram, Centreville/Bibb, AL at 12:00Z on 1990-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 818 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, Centreville/Bibb, AL at 12:00Z on 1990-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
818 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
1322 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
64 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 052012
SVRMOB
ALC053-052100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
310 PM CDT SUN AUG 5 1990
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST ALABAMA
 
   ...ESCAMBIA COUNTY
 
AT 308 PM MOBILE RADAR INDICATED TWO SEVERE THUNDERSTORMS IN ESCAMBIA
COUNTY ALABAMA. ONE WAS 15 MILES NORTHEAST OF ATMORE AND THE OTHER WAS
10 MILES SOUTH OF BREWTON. THE STORMS WERE MOVING TO THE NORTH AT 5
MILES AN HOUR AND MAY PRODUCE TORRENTIAL RAIN...DAMAGING WINDS AND
FREQUENT DEADLY LIGHTNING FOR THE NEXT 45 MINUTES.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.

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, Aug 5, 1:45 PM CDT, 1 hour 25 minutes before
FLZ001>004-051940-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
140 PM CDT SUN AUG 5 1990

AT 135 PM CDT...A STRONG THUNDERSTORM WAS OVER THE COMMUNITY OF BUELAH
IN SOUTHWEST ESCAMBIA COUNTY FLORIDA. THIS STORM WILL PRODUCE STRONG GUSTY
WINDS...NUMEROUS DEADLY LIGHTNING STRIKES...TORENNTIAL RAIN AND POSSIBLE
HAIL. FLOODING OF LOW AREAS IS LIKELY DUE TO SLOW MOVEMENT.

ELSEWHERE SCATTERED SHOWERS AND THUNDERSTOREMS CONTINUE TO DEVELOPE OVER
THE FLORIDA PANHANDLE...SOUTHWEST AND SOUTHEAST ALABAMA.

THE THUNDERSTORMS WERE MOVING VERY LITTLE.
Special weather statement, Aug 5, 2:47 PM CDT, 23 minutes before
FLZ001>004-052040-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
240 PM CDT SUN AUG 5 1990

AT 235 PM CDT...A LINE OF STRONG THUNDERSTORMS EXTENDS FROM NEAR ELBERTA
ALABAMA...THROUGH CENTRAL ESCAMBIA AND NORTHERN SANTA ROSA COUNTIES FLORIDA
AND INTO SOUTHEAST ALABAMA. SOME OF THE HEAVIER STORMS WILL PRODUCE STRONG
GUSTY WINDS...POSSIBLE HAIL AND DEADLY LIGTNING STRIKES. FLOODING OF LOW
AREAS IS LIKELY DUE TO SLOW MOVEMENT AND VERY HEAVY RAIN.

ELSEWHERE WIDELY SCATTERED SHOWERS AND THUNDERSTORMS CONTINUE OVER THE EAST
FLORIDA PANHANDLE AND SOUTHEAST LOUISIANA.

THE THUNDERSTORMS WERE MOVING VERY LITTLE.
Local storm report, Aug 5, 2:49 PM CDT, 21 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE MOBILE AL
245 PM CDT SUN AUG 5 1990

TIME:        REPORT:
205 PM CDT   PUBLIC REPORTED ROOF DAMAGE TO FLYING K TRUCK STOP AND
             POWER LINES DOWN AT INTERSTATE 10 AND ALABAMA 59 IN
             BALDWIN COUNTY ALABAMA. VERY HEAVY RAIN AND STRONG WIND
             REDUCED VISIBILITY TO ZERO.  (AZRAN FROM MOB 94/25)

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 11:03 AM CDTTornado WarningMOBMobile27 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.