Alert archive / Alabama / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 88, NWS Mobile, AL

April 10, 1990Dallas County, Alabama

NWS Mobile, AL issued this severe thunderstorm warning at Apr 10, 1990, 3:03 PM CDT for Dallas County, Alabama. It was in force for 57 min.

The area

The counties it named.

The facts

Issued: Apr 10, 1990, 3:03 PM CDT (20:03 UTC)
Expired: Apr 10, 1990, 4:00 PM CDT
In force: 57 min
Issued by: NWS Mobile, AL
Area: Whole counties

County Dallas County, AL

The radar

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

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 8.1 hours before the alert went out and 64 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: 6 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 830 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 340 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 KMGM 102005
SVRMGM
ALC047-102100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MONTGOMERY AL
303 PM CDT TUE APR 10 1990
 
THE NATIONAL WEATHER SERVICE IN MONTGOMERY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH ALABAMA
 
   ...DALLAS COUNTY
 
WEATHER RADAR AT MONTGOMERY HAS OBSERVED A SEVERE THUNDERSTORM ABOUT
20 MILES WEST OF SELMA ALABAMA MOVING EASTSOUTHEAST AT 30 MILES AN
HOUR.
 
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 SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

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 10, 2:28 PM CDT, 35 minutes before

ALZ013-015-016-MSZ014-013-102130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOBILE AL
227 PM CDT TUE APR 10 1990

SEVERE THUNDERSTORM WATCH NUMBER 119 IS IN EFFECT UNTIL 7 PM FOR ALL
COUNTIES IN SOUTHEAST MISSISSIPPI AND SOUTHWEST ALABAMA.

A LINE OF THUNDERSTORMS WITH HEAVY RAIN EXTENDED FROM CHATTANOOGA
TENNESSEE TO BATON ROUGE LOUISIANA. THE HEAVIEST RAIN WAS JUST MOVING
INTO THE NORTHWEST CORNER OF WASHINGTON COUNTY ALABAMA. THE LIWNE WAS
MOVING TO THE SOUTHEAST AT 25 MPH.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 2:52 PM CDT	Severe Thunderstorm Warning	MOB	Barbour	68 min
Apr 10, 2:57 PM CDT	Tornado Warning	MOB	Barbour	63 min
Apr 10, 3:36 PM CDT	Severe Thunderstorm Warning	MOB	Wilcox	69 min
Apr 10, 3:36 PM CDT	Severe Thunderstorm Warning	MOB	Autauga	69 min
Apr 10, 4:12 PM CDT	Tornado Warning	MOB	Tallapoosa	63 min
Apr 10, 4:12 PM CDT	Tornado Warning	MOB	Montgomery	63 min
Apr 10, 4:56 PM CDT	Severe Thunderstorm Warning	MOB	Lee	64 min
Apr 10, 5:57 PM CDT	Severe Thunderstorm Warning	MOB	Coffee, Covington	63 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; the sounding from the Mesonet's radiosonde archive.