Alert archive / Alabama / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 113, NWS Birmingham, AL

June 22, 1990Jefferson County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 22, 1990, 5:01 PM CDT for Jefferson County, Alabama. It was in force for 29 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: Jun 22, 1990, 5:01 PM CDT (22:01 UTC)
Expired: Jun 22, 1990, 5:30 PM CDT
In force: 29 min
Issued by: NWS Birmingham, AL
Area: Whole counties

County Jefferson 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
Jun 22, 5:30 PM CDT	Thunderstorm Wind 0	Jefferson, 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, 10.0 hours before the alert went out and 78 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 0 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -153 m²/s²
0-3 km storm-relative helicity: -118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBHM 222203
SVRBHM
ALC073-222230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
501 PM CDT FRI JUN 22 1990
 
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH ALABAMA
 
   ...JEFFERSON COUNTY
 
WEATHER SERVICE RADAR AND SEVERE STORM SPOTTERS INDICATED THAT A
SEVERE THUNDERSTORM WAS MOVING THROUGH JEFFERSON COUNTY.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOYULD NOT DRIVE INTO LOW WATER CROSSINGS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 6:57 AM CDT	Severe Thunderstorm Warning	BMX	Lamar	23 min
Jun 22, 3:56 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair	34 min
Jun 22, 4:02 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Tuscaloosa	43 min
Jun 22, 4:18 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	42 min
Jun 22, 4:27 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair	48 min
Jun 22, 4:38 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Hale	37 min
Jun 22, 5:05 PM CDT	Severe Thunderstorm Warning	BMX	Shelby	40 min
Jun 22, 5:47 PM CDT	Tornado Warning	BMX	Hale	28 min
Jun 22, 5:55 PM CDT	Tornado Warning	BMX	Perry	35 min
Jun 22, 6:57 PM CDT	Severe Thunderstorm Warning	BMX	Marengo	48 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.