Alert archive / Alabama / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 38, NWS Mobile, AL

April 20, 1992Geneva County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 20, 1992, 4:08 PM CDT for Geneva County, Alabama. It was in force for 52 min.

The area

The counties it named.

The facts

Issued: Apr 20, 1992, 4:08 PM CDT (21:08 UTC)
Expired: Apr 20, 1992, 5:00 PM CDT
In force: 52 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Geneva County, AL

The nearest sounding before it

Eglin AFB/Valpar, FL (KVPS), launched 12:00Z, 9.1 hours before the alert went out and 93 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 259 J/kg
Mixed-layer CIN: -184 J/kg
Mixed-layer LCL: 781 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 177 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMGM 202111
SVRMGM
ALC061-202200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MONTGOMERY AL
409 PM CDT MON APR 20 1992
 
THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH ALABAMA
 
   ...GENEVA COUNTY
 
WEATHER RADARS SHOW A SEVERE THUNDERSTORM JUST WEST OF SAMPSON MOVING
TOWARD THE EAST AT 40 MPH.
 
 
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 QUZICKLY 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, Apr 20, 2:34 PM CDT, 1 hour 34 minutes before

FLZ001>004-ALZ010-013>018-MSZ012>014-202030-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
230 PM CDT MON APR 20 1992

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 700 PM CDT FOR ALL
OF THE FLORIDA PANHANDLE...

AT 230 PM CDT...A LINE OF STRONG THUNDERSTORMS...SOME WITH HEAVY
RAIN...STRETCHED FROM MONROE COUNTY ALABAMA SOUTH THROUGH THE FLORIDA
PANHANDLE ALONG THE ESCAMBIA...SANTA ROSA COUNTY LINE THEN CONTINUED
OUT ANOTHER 100 MILES INTO THE GULF.

THESE THUNDERSTORMS WILL CONTAIN PERIODS OF HEAVY RAIN...FREQUENT
LIGHTNING...STRONG GUSTY WINDS AND POSSIBLE HAIL AS THEY MOVE EAST
ACROSS THE PANHANDLE AT 25 MILES AN HOUR.  WIND GUSTS TO NEAR 50 MPH
HAVE ALREADY BEEN REPORTED IN ESCAMBIA COUNTY FROM THE THUNDERSTORMS.

CONTINUE TO MONITOR THIS SOURCE FOR FURTHER INFORMATION AND BE READY
TO MOVE TO SAFETY IF WARNINGS ARE ISSUED.

Local storm report, Apr 20, 2:57 PM CDT, 1 hour 11 minutes before

LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE MOBILE AL
252 PM CDT MON APR 20 1992

TIME                  EVENT
215 PM                TREES AND SOME POWER LINES DOWN IN MONROEVILLE.
                      REPORTED BY MONROEVILLE CITY POLICE AND MONROE
                      COUNTY SHERIFFS OFFICE AT 235 PM.

229 PM                EVERGREEN STATE POLICE OF ALABAMA RELAYED A
                      PUBLIC REPORT OF A POSSIBLE TORNADO THAT DESTROYED
                      A SMALL SHED IN SOUTHWESTERN CONECUH COUNTY JUST
                      WEST OF RANGE.

Local storm report, Apr 20, 3:18 PM CDT, 50 minutes before

LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE MOBILE AL
315 PM CDT MON APR 20 1992

UPDATE ON STORM AT RANGE IN CONECUH COUNTY AT 229 PM...

EVERGREEN STATE POLICE REPORTED THAT THE STORM TOOK THE TOPS OULT
OF SEVERAL TREES AND FLIPPED A 25-FT TRAVEL TRAILER UPSIDE DOWN.
SEVERAL SHEDS WERE DESTROYED.  NO INJURIES REPORTED.

Special weather statement, Apr 20, 3:33 PM CDT, 35 minutes before

FLZ001>004-ALZ010-013>018-MSZ012>014-202130-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE PENSACOLA FL
330 PM CDT MON APR 20 1992

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 700 PM CDT FOR ALL
OF THE FLORIDA PANHANDLE...

AT 330 PM CDT...A LINE OF THUNDERSTORMS STRETCHED FROM MONTGOMERY SOUTH
TO CRESTVIEW AND TO DESTIN THEN CONTINUED 100 MILES INTO THE GULF.
MOST OF THE HEAVIER RAIN WAS IN OKALOOSA COUNTY AND IN COVINGTON
COUNTY ALABAMA.  THE LINE WAS MOVING EAST AT 25 MILES AN HOUR.

THESE THUNDERSTORMS MAY CONTAIN HEAVY RAIN...FREQUENT LIGHTNING AND
STRONG WINDS AS THEY CONTINUE EAST ACROSS THE FLORIDA PANHANDLE.

WIDESPREAD RAIN AND SHOWERS SPREAD WEST 50 TO 60 MILES BEHIND THE LINE
OF THUNDERSTORMS.

CONTINUE TO MONITOR THIS SOURCE FOR FURTHER INFORMATION AND BE READY
TO MOVE TO SAFETY IF WARNINGS ARE ISSUED.

Local storm report, Apr 20, 3:35 PM CDT, 33 minutes before

LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE MOBILE AL
335 PM CDT MON APR 20 1992

TIME                 EVENT

DELAYED REPORT...

1230 PM              CITIZEN IN GRAND BAY REPORTED A LARGE OAK TREE
                     BLOWN DOWN AT THE INTERSECTION OF US 90 AND THE
                     GRAND-BAY WILMER ROAD IN GRAND BAY IN MOBILE
                     COUNTY.

Local storm report, Apr 20, 3:56 PM CDT, 12 minutes before

LOCAL STORM REPORTS
NATIONAL WEATHER SERVICE MOBILE AL
355 PM CDT MON APR 20 1992

TIME                 EVENT

DELAYED REPORT...

100PM                STONE COUNTY MISSISSIPPI SO REPORTED LARGE TREE
                     LIMBS WERE BLOWN DOWN AND CLOSED HIGHWAY 26 FOR A
                     TIME AT WHITES CROSSING.  HIGHWAY NOW CLEAR.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 12:01 PM CDT	Severe Thunderstorm Warning	MOB	Mobile	44 min
Apr 20, 1:07 PM CDT	Severe Thunderstorm Warning	MOB	Clarke	53 min
Apr 20, 1:45 PM CDT	Severe Thunderstorm Warning	MOB	Monroe	45 min
Apr 20, 1:49 PM CDT	Severe Thunderstorm Warning	MOB	Baldwin	26 min
Apr 20, 2:08 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	67 min
Apr 20, 2:42 PM CDT	Severe Thunderstorm Warning	MOB	Butler	63 min
Apr 20, 2:49 PM CDT	Severe Thunderstorm Warning	MOB	Conecuh	26 min
Apr 20, 3:09 PM CDT	Severe Thunderstorm Warning	MOB	Lowndes	66 min
Apr 20, 3:21 PM CDT	Tornado Warning	MOB	Lowndes, Montgomery	69 min
Apr 20, 3:51 PM CDT	Severe Thunderstorm Warning	MOB	Covington	69 min
Apr 20, 3:51 PM CDT	Severe Thunderstorm Warning	MOB	Pike	69 min
Apr 20, 4:11 PM CDT	Severe Thunderstorm Warning	MOB	Elmore, Tallapoosa	64 min
Apr 20, 4:46 PM CDT	Severe Thunderstorm Warning	MOB	Lee, Macon	59 min
Apr 20, 5:12 PM CDT	Severe Thunderstorm Warning	MOB	Chambers	48 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1992 Every 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.