Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 201, NWS Jackson, MS

August 22, 1990Jones County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Aug 22, 1990, 4:40 PM CDT for Jones County, Mississippi. It was in force for 35 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
Aug 22, 1990, 4:40 PM CDT (21:40 UTC)
Expired
Aug 22, 1990, 5:15 PM CDT
In force
35 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Jones 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
Aug 22, 5:05 PM CDTThunderstorm Wind 0Jones, 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 12:00Z, 9.7 hours before the alert went out and 116 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 12:00Z on 1990-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1598 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 12:00Z on 1990-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.1939Sfc1 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
1598 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1019 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
16 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 KMEI 222141
SVRMEI
MSC067-222215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MERIDIAN MS
440 PM CDT WED AUG 22 1990
 
THE NATIONAL WEATHER SERVICE IN MERIDIAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL MISSISSIPPI
 
   ...JONES COUNTY
 
AT 439 PM CDT MERIDIAN WEATHER RADAR INDICATED A SEVERE THUNDERSTORM
10 MILES SOUTH OF LAUREL MISSISSIPPI MOVING SOUTHEAST AT 15 MPH.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
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, Aug 22, 2:38 PM CDT, 2 hours 2 minutes before
MSZ009-012-ALZ008-013-222145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
238 PM CDT WED AUG 22 1990

...SEVERE THUNDERSTORM WATCH NUMBER 670 IS IN EFFECT UNTIL 800 PM FOR
NEWTON...LAUDERDALE...JASPER...CLARKE...JONES AND WAYNE COUNTIES IN
EAST CENTRAL MISSISSIPPI AND CHOCTAW COUNTY IN WEST CENTRAL ALABAMA...

AT 230 PM CDT NATIONAL WEATHER SERVICE RADAR IN MERIDIAN INDICATED
SCATTERED THUNDERSTORMS ALONG AND SOUTHWEST OF A LINE SELMA ALABAMA TO
COLUMBUS TO GREENWOOD MISSISSIPPI.  THE STRONGEST STORM WAS LOCATED IN
NORTHERN CLARKE COUNTY.

THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 15 MPH.

THESE  THUNDERSTORMS WILL PRODUCE HEAVY DOWNPOURS...GUSTY
WINDS...DEADLY L^IGHTNING AND HAIL.  IF YOU ARE IN OR CLOSE TO THE
WATCH AREA YOU SHOULD REMAIN WEATHER ALERT AND LISTEN FOR LATER
STATEMENTS AND POSSIBLE WARNINGS.
Special weather statement, Aug 22, 3:45 PM CDT, 55 minutes before
MSZ009-012-ALZ008-013-222230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MERIDIAN MS
338 PM CDT WED AUG 22 1990

...SEVERE THUNDERSTORM WATCH NUMBER 670 IS IN EFFECT UNTIL 800 PM
INCLUDING NEWTON...LAUDERDALE...JASPER...CLARKE...JONES AND WAYNE
COUNTIES IN EAST CENTRAL MISSISSIPPI AND CHOCTAW COUNTY IN WEST
CENTRAL ALABAMA...

AT 330 PM CDT NATIONAL WEATHER SERVICE RADAR IN MERIDIAN INDICATED
SCATTERED THUNDERSTORMS ALONG AND SOUTHWEST OF A LINE MONTGOMERY
ALABAMA TO MACON TO ROLLING FORK MISSISSIPPI. STRONGEST STORM WAS
LOCATED IN CLARKE COUNTY BETWEEN PACHUTA AND QUITMAN.

THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 15 MPH.

THESE  THUNDERSTORMS WILL PRODUCE HEAVY DOWNPOURS...GUSTY
WINDS...DEADLY LIGHTNING AND HAIL.  IF YOU ARE IN OR CLOSE TO THE
WATCH AREA YOU SHOULD REMAIN WEATHER ALERT AND LISTEN FOR LATER
STATEMENTS.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 4:28 PM CDTSevere Thunderstorm WarningJANWayne32 min
Aug 22, 6:50 PM CDTSevere Thunderstorm WarningJANSimpson25 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.