Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 9, NWS Jackson, MS

February 2, 1990Leflore County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Feb 2, 1990, 9:07 PM CST for Leflore County, Mississippi. It was in force for 38 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 2, 1990, 9:07 PM CST (03:07 UTC)
Expired
Feb 2, 1990, 9:45 PM CST
In force
38 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Leflore County, MS

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

TimeReportWhereRemark
Feb 2, 9:35 PM CSTThunderstorm Wind 0Leflore, MS

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

Jackson, MS (KJAN), launched 00:00Z, 3.1 hours before the alert went out and 138 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, Jackson, MS at 00:00Z on 1990-02-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 457 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, Jackson, MS at 00:00Z on 1990-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.1939587897Sfc1 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
457 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1162 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
132 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAN 030308
SVRJAN
MSC083-030345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE JACKSON MS
907 PM CST FRI FEB 2 1990
 
THE NATIONAL WEATHER SERVICE IN JACKSON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  945 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN NORTH CENTRAL MISSISSIPPI
          ...NORTHERN LEFLORE
 
AT 905 PM CST...A SEVERE THUNDERSTORM WAS INDICATED 10 MILES NORTHWEST
OF ITTA BENA. THIS STORM WAS MOVING TO THE NORTHEAST AT 30 MILES AN
HOUR TOWARD SHELLMOUND.
 
 
SEVERE THUNDERSTORMS PRODUCE WIND IN EXCESS OF 55 MPH...LARGE
HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.  MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR rHOME OR BUSINESS.
<

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, Feb 2, 3:18 PM CST, 5 hours 49 minutes before
MSZ013-014-031200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
315 PM CST FRI FEB 2 1990

...DENSE FOG ADVISORY EXTREME SOUTHEAST MISSISSIPPI TONIGHT...

DENSE FOG WILL AGAIN REDUCE VISIBILITIES TO NEAR ZERO ACROSS EXTREME
SOUTHEAST MISSISSIPPI TONIGHT.  VISIBILITIES NEAR THE COAST ARE ALREADY
BEING RESTRICTED BY FOG AND CONDITIONS WILL CONTINUE TO DETERIORATE
DURING THE NIGHT.

PERSONS DRIVING IN THE REGION GENERALLY SOUTH OF A SUMRALL TO LEAKSVILLE
LINE SHOULD EXPECT DENSE FOG TONIGHT.

REMEMBER...WHEN DRIVING THROUGH FOG...YOUR HEADLIGHTS SHOULD BE ON LOW
BEAM.
Special weather statement, Feb 2, 6:58 PM CST, 2 hours 9 minutes before
MSZ003-008-030200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
657 PM CST FRI FEB 2 1990

...RAIN AND THUNDERSTORMS DEVELOPING NORTHWARD INTO CENTRAL
MISSISSIPPI...

AT 650 PM...SCATTERED THUNDERSTORMS CONTINUED TO DEVELOP NORTHWARD FROM
SOUTHWEST MISSISSIPPI.  THE STRONGEST OF THESE THUNDERSTORMS WERE
LOCATED NEAR THE COPIAH-SIMPSON COUNTYLINE SOUTH OF GEORGETOWN...AND
NEAR LORMAN IN NORTHERN JEFFERSON COUNTY.

WITH A VERY WARM AND HUMID AIR MASS OVER CENTRAL MISSISSIPPI THIS
EVENING...THESE THUNDERSTORMS WILL LIKELY CONTINUED TO MOVE NORTHWARD
UP INTO CENTRAL MISSISSIPPI OVER THE NEXT TWO HOURS.

THE STORMS CONTAIN OCCASIONAL LIGHTNING...BRIEF PERIODS OF HEAVY RAIN
A=ND SOME GUSTY WINDS.  MOVEMENT WAS NORTHEAST AT 35 MILES AN HOUR.
<

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 2, 7:51 PM CSTSevere Thunderstorm WarningJANRankin39 min
Feb 2, 8:06 PM CSTSevere Thunderstorm WarningJANIssaquena39 min
Feb 2, 8:24 PM CSTSevere Thunderstorm WarningJANHinds36 min
Feb 2, 8:34 PM CSTSevere Thunderstorm WarningJANSunflower26 min
Feb 2, 8:45 PM CSTSevere Thunderstorm WarningJANWashington30 min
Feb 2, 9:16 PM CSTSevere Thunderstorm WarningJANHinds29 min
Feb 2, 9:31 PM CSTTornado WarningJANLeflore, Tallahatchie29 min
Feb 2, 9:53 PM CSTTornado WarningJANGrenada37 min
Feb 2, 10:27 PM CSTTornado WarningJANYalobusha33 min
Feb 2, 10:33 PM CSTFlash Flood WarningJANWashington3 hr
Feb 2, 10:47 PM CSTTornado WarningJANCalhoun28 min
Feb 2, 11:26 PM CSTSevere Thunderstorm WarningJANBolivar34 min
Feb 3, 4:21 PM CSTTornado WarningJANKemper, Neshoba, Noxubee, Winston54 min
Feb 3, 4:28 PM CSTSevere Thunderstorm WarningJANJasper32 min
Feb 3, 4:55 PM CSTSevere Thunderstorm WarningJANLamar, Marion35 min
Feb 3, 4:57 PM CSTSevere Thunderstorm WarningJANClarke48 min
Feb 3, 5:15 PM CSTSevere Thunderstorm WarningJANKemper45 min
Feb 3, 5:19 PM CSTSevere Thunderstorm WarningJANNewton41 min
Feb 3, 5:25 PM CSTSevere Thunderstorm WarningJANLauderdale50 min
Feb 3, 5:57 PM CSTSevere Thunderstorm WarningJANJasper48 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.