Alert archive / Alabama / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 75, NWS Mobile, AL

July 4, 1994Mobile County, Alabama; Jackson County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Jul 4, 1994, 2:01 PM CDT for Mobile County, Alabama; Jackson County, Mississippi. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Jul 4, 1994, 2:01 PM CDT (19:01 UTC)
Expired
Jul 4, 1994, 3:00 PM CDT
In force
59 min
Issued by
NWS Mobile, AL
Area
Whole counties

Counties Mobile County, AL, Jackson County, MS

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.0 hours before the alert went out and 129 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 1994-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1925 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, Slidell Radar S, LA at 12:00Z on 1994-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 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
1925 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
711 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
-9 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 
WUUS1 KMOB 041903 RRA
SVRMOB
ALC097-MSC059-042000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
201 PM CDT MON JUL 4 1994
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  300 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST ALABAMA
 
   ...SOUTHERN MOBILE COUNTY
 
 
 
 
 
IN SOUTHEAST MISSISSIPPI
 
   ...JACKSON COUNTY
 
 
 
 
AT 155 PM MOBILE WEATHER RADAR INDICATED THUNDERSTORMS AND HEAVY RAIN
SHOWERS IN JACKSON COUNTY MISSISSIPPI AND SOUTHERN MOBILE COUNTY
ALABAMA. THE STORMS ARE MOVING TO THE EAST AT 15 MPH.
 
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  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.
 
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 4, 12:44 PM CDT, 1 hour 17 minutes before
FLZ001>010-012-041830-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
1240 PM CDT MON JUL 4 1994

AT 1230 PM CDT...A BAND OF SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN
EXTENDED FROM PENSACOLA EAST OVER 100 MILES TO VERNON IN WASHINGTON
COUNTY OF NORTHWEST FLORIDA. THE LARGER THUNDERSTORMS ARE DUMPING
HEAVY RAINS WHICH CAUSE STREET AND LOW AREA FLOODING. MOTORISTS SHOULD
NOT CROSS ROADS THAT ARE UNDER WATER.

SHOWtERS AND THUNDERSTORMS WERE DEVELOPING IN SOUTHWEST ALABAMA AND
ADJACENT MISSISSIPPI...SOME INDICATED HEAVY RAIN.

MOVEMENTS ARE NORTHEAST AROUND 25 MPH.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 3:09 AM CDTFlash Flood WarningMOBBarbour, Henry4 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 1994Severe Thunderstorm Warnings in Mississippi, 1994Every severe thunderstorm warning in 1994

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.