Alert archive / Alabama / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 33, NWS Mobile, AL

May 13, 1993Houston County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at May 13, 1993, 9:10 AM CDT for Houston County, Alabama. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
May 13, 1993, 9:10 AM CDT (14:10 UTC)
Expired
May 13, 1993, 10:15 AM CDT
In force
65 min
Issued by
NWS Mobile, AL
Area
Whole counties

County Houston County, AL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 2.2 hours before the alert went out and 127 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, Tallahassee Rgnl, FL at 12:00Z on 1993-05-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 693 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, Tallahassee Rgnl, FL at 12:00Z on 1993-05-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.1939587897Sfc1 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
693 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
561 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMGM 131411 RRA
SVRMGM
ALC069-131515-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MONTGOMERY AL
910 AM CDT THU MAY 13 1993
 
THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHEAST ALABAMA
 
   ...HOUSTON COUNTY
 
WEATHER RADAR AT MONTGOMERY SHOWED A SEVERE THUNDERSTORM OVER SOUTHERN
HOUSTON COUNTY...15 MILES SOUTHWEST OF ASHFORD. THE THUNDERSTORM WAS
MOVING NORTHEAST AT 30 MILES AN HOUR.
 
 
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, May 13, 8:38 AM CDT, 32 minutes before
FLZ003-004-131430-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
835 AM CDT THU MAY 13 1993

AT 830 AM CDT...A LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN AND GUSTY
WINDS EXTENDED FROM NEAR DOTHAN ALABAMA AND EXTENDED SOUTHWEST ACROSS
HOLMES COUNTY AND INTO THE COASTAL  WATERS BETWEEN FREEPORT AND PANAMA
CITY.
THE THUNDERSTORMS WITH THE HEAVIER RAINS WERE JUST WEST OF BONIFAY...
SOUTHEAST OF FREEPORT.
THE LINE OF ZTHUNDERSTORMS WAS SPREADING EAST AT 15 MILES AN HOUR...
WITH THE INDIVIDUAL THUNDERSTORMS MOVING NORTHEAST AT 35 MILES AN HOUR.
Local storm report, May 13, 9:00 AM CDT, 10 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE PENSACOLA FL
900 AM CDT THU MAY 13 1993

TIME          EVENT

AROUND 840 AM HOLMES COUNTY...EMERGENCY MANAGEMENT REPORTED
              QUARTER SIZE HAIL EAST OF ESTO AROUND INTERSECTION
              OF HWY 2 AND HWY 173.  THE HAIL LASTED ONLY A SHORT
              TIME.
Local storm report, May 13, 9:07 AM CDT, 3 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE PENSACOLA FL
900 AM CDT THU MAY 13 1993

TIME          EVENT

AROUND 840 AM HOLMES COUNTY...EMERGENCY MANAGEMENT REPORTED
              QUARTER SIZE HAIL EAST OF ESTO AROUND INTERSECTION
              OF HWY 2 AND HWY 173.  THE HAIL LASTED ONLY A SHORT
              TIME.

The office that day

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

IssuedProductOfficeCountiesLasted
May 13, 9:31 AM CDTSevere Thunderstorm WarningMOBBarbour, Bullock59 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1993Every severe thunderstorm warning in 1993

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.