Alert archive / Alabama / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 4, NWS Mobile, AL

February 15, 1992Mobile County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Feb 15, 1992, 12:35 AM CST for Mobile County, Alabama. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Feb 15, 1992, 12:35 AM CST (06:35 UTC)
Expired
Feb 15, 1992, 1:30 AM CST
In force
55 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Mobile County, AL

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 6.6 hours before the alert went out and 152 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 00:00Z on 1992-02-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 541 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 00:00Z on 1992-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 204 square meters per square second.19395878Sfc1 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
541 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
596 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
204 m²/s²
0-3 km storm-relative helicity
271 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 150635
SVRMOB
ALC097-150730-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
1235 AM CST SAT FEB 15 1992
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  130 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST ALABAMA
 
   ...NORTHERN MOBILE COUNTY
 
AT 1230 AM WEATHER SERVICE RADARS INDICATED A SHORT LINE OF SEVERE
THUNDERSTORMS FROM 5 MILES NORTHEAST OF HURLEY IN JACKSON COUNTY
MISSISSIPPI TO NEAR GEORGETOWN IN MOBILE COUNTY. THE LINE WAS MOVING
TOWARD THE NORTHEAST AT 30 MPH.
 
THESE THUNDERSTORMS ARE LIKELY TO PRODUCE DAMAGING WINDS GENERALLY
NORTH OF AIRPORT BOULEVARD.
 
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
DvON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 15, 3:57 AM CSTSevere Thunderstorm WarningMOBButler63 min
Feb 15, 4:57 AM CSTSevere Thunderstorm WarningMOBPike63 min
Feb 15, 5:34 PM CSTSevere Thunderstorm WarningMOBAutauga, Dallas56 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1992Every severe thunderstorm warning in 1992

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.