Alert archive / Alabama / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 39, NWS Mobile, AL

April 20, 1992Elmore County, Tallapoosa County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 20, 1992, 4:11 PM CDT for Elmore County, Tallapoosa County, Alabama. It was in force for 64 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 20, 1992, 4:11 PM CDT (21:11 UTC)
Expired: Apr 20, 1992, 5:15 PM CDT
In force: 64 min
Issued by: NWS Mobile, AL
Area: Whole counties

Counties Elmore County, AL, Tallapoosa County, AL

What was reported inside it

Time	Report	Where	Remark
Apr 20, 4:34 PM CDT	Hail 1	Tallapoosa, AL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 9.2 hours before the alert went out and 116 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: 11 J/kg
Mixed-layer CIN: -209 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 185 m²/s²
0-3 km storm-relative helicity: 259 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMGM 202113
SVRMGM
ALC051-123-202215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MONTGOMERY AL
411 PM CDT MON APR 20 1992
 
THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH ALABAMA
 
   ...ELMORE COUNTY...TALLAPOOSA COUNTY
 
WEATHER RADAR AT MONGOMERY SHOWED A SEVERE THUNDERSTORM JUST EAST OF
WETUMPKA MOVING NORTHEAST AT 35 MILES AN HOUR.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

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, 4:08 PM CDT	Severe Thunderstorm Warning	MOB	Geneva	52 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.