Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 13, NWS Mobile, AL

February 10, 1990George County, Mississippi

NWS Mobile, AL issued this severe thunderstorm warning at Feb 10, 1990, 2:44 AM CST for George County, Mississippi. It was in force for 46 min.

The area

The counties it named.

The facts

Issued
Feb 10, 1990, 2:44 AM CST (08:44 UTC)
Expired
Feb 10, 1990, 3:30 AM CST
In force
46 min
Issued by
NWS Mobile, AL
Area
Whole counties

County George County, MS

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

Slidell Radar S, LA (KSIL), launched 00:00Z, 8.7 hours before the alert went out and 122 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-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 1990-02-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1257 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 1990-02-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1257 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
650 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
0.7
Supercell composite
3.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMOB 100845
SVRMOB
ALC097-129-MSC039-100930-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOBILE AL
244 AM CST SAT FEB 10 1990
 
THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST ALABAMA
 
   ...NORTHERN MOBILE COUNTY...SOUTHERN WASHINGTON COUNTY
 
 
+
IN SOUTHEAST MISSISSIPPI
 
   ...GEORGE COUNTY
 
AT 242 AM THE MOBILE RADAR INDICATED A LINE OF SEVERE THUNDERSTOMRS
FROM NEAR CHATOM ALABAMA SOUTHWEST TO LUCEDALE MISSISSIPPI. THE LINE
WAS MOVING TOWARD THE EAST AT 45 MPH.
 
 
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.

IssuedProductOfficeCountiesLasted
Feb 10, 1:14 AM CSTSevere Thunderstorm WarningMOBForrest, Lamar31 min
Feb 10, 1:21 AM CSTSevere Thunderstorm WarningMOBPerry54 min
Feb 10, 1:47 AM CSTSevere Thunderstorm WarningMOBGreene58 min
Feb 10, 2:07 AM CSTSevere Thunderstorm WarningMOBPearl River68 min
Feb 10, 3:27 AM CSTSevere Thunderstorm WarningMOBJackson63 min
Feb 10, 7:17 AM CSTSevere Thunderstorm WarningMOBJackson28 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1990Every 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.