Alert archive / Alabama / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 39, NWS Mobile, AL

February 16, 1990Chambers County, Tallapoosa County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Feb 16, 1990, 9:00 AM CST for Chambers County, Tallapoosa County, Alabama. It was in force for 60 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: Feb 16, 1990, 9:00 AM CST (15:00 UTC)
Expired: Feb 16, 1990, 10:00 AM CST
In force: 60 min
Issued by: NWS Mobile, AL
Area: Whole counties

Counties Chambers County, AL, Tallapoosa County, AL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Feb 16, 9:45 AM CST	Thunderstorm Wind 0	Chambers, 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, 3.0 hours before the alert went out and 150 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: 837 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 556 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 233 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMGM 161504
SVRMGM
ALC013-017-123-161600-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MONTGOMERY AL
900 AM CST FRI FEB 16 1990
 
THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN SOUTH ALABAMA
          ...BUTLER...CHAMBERS...TALLAPOOSA
 
LINE OF SEVERE THUNDERSTORMS MOVING THROUGH THESE COUNTIES.
 S
 
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
Feb 16, 7:04 AM CST	Severe Thunderstorm Warning	MOB	Coosa	56 min
Feb 16, 7:16 AM CST	Severe Thunderstorm Warning	MOB	Autauga, Elmore	59 min
Feb 16, 7:31 AM CST	Severe Thunderstorm Warning	MOB	Wilcox	59 min
Feb 16, 7:52 AM CST	Flash Flood Warning	MOB	Tallapoosa	68 min
Feb 16, 7:52 AM CST	Severe Thunderstorm Warning	MOB	Tallapoosa	68 min
Feb 16, 8:10 AM CST	Severe Thunderstorm Warning	MOB	Autauga, Elmore, Montgomery	65 min
Feb 16, 9:00 AM CST	Severe Thunderstorm Warning	MOB	Butler	60 min
Feb 16, 9:12 AM CST	Severe Thunderstorm Warning	MOB	Crenshaw, Pike	63 min
Feb 16, 9:12 AM CST	Severe Thunderstorm Warning	MOB	Bullock, Macon	63 min
Feb 16, 9:12 AM CST	Severe Thunderstorm Warning	MOB	Lee	63 min
Feb 16, 9:13 AM CST	Severe Thunderstorm Warning	MOB	Conecuh	62 min
Feb 16, 9:31 AM CST	Severe Thunderstorm Warning	MOB	Baldwin	29 min
Feb 16, 9:53 AM CST	Severe Thunderstorm Warning	MOB	Coffee, Covington	67 min
Feb 16, 9:59 AM CST	Severe Thunderstorm Warning	MOB	Baldwin	61 min
Feb 16, 10:12 AM CST	Severe Thunderstorm Warning	MOB	Barbour, Dale	63 min
Feb 16, 10:55 AM CST	Tornado Warning	MOB	Dale	50 min
Feb 16, 11:13 AM CST	Severe Thunderstorm Warning	MOB	Henry, Houston	62 min
Feb 16, 11:13 AM CST	Severe Thunderstorm Warning	MOB	Geneva	62 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1990 Every severe thunderstorm warning in 1990

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.