Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 34, NWS Jackson, MS

February 15, 1990Jasper County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Feb 15, 1990, 10:25 AM CST for Jasper County, Mississippi. It was in force for 35 min.

The area

The counties it named.

The facts

Issued: Feb 15, 1990, 10:25 AM CST (16:25 UTC)
Expired: Feb 15, 1990, 11:00 AM CST
In force: 35 min
Issued by: NWS Jackson, MS
Area: Whole counties

County Jasper 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

Jackson, MS (KJAN), launched 12:00Z, 4.4 hours before the alert went out and 96 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: 1189 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 728 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 157 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMEI 151626
SVRMEI
MSC061-151700-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MERIDIAN MS
1025 AM CST THU FEB 15 1990
 
THE NATIONAL WEATHER SERVICE IN MERIDIAN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN EAST CENTRAL MISSISSIPPI
          ...JASPER
 
AT 1025 AM CST MERIDIAN RADAR INDICATED A SEVERE THUNDERSTORM
15 MILES NORTH OF BAY SPRINGS MISSISSIPPI MOVING NORTHEAST
AT 35 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.

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 15, 6:10 AM CST, 4 hours 15 minutes before

MSZALL-161200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
610 AM CST THU FEB 15 1990

...STORMY WEATHER EXPECTED ACROSS ALL OF MISSISSIPPI TODAY AND
TONIGHT...

VERY MOIST UNSTABLE AIR COMBINED WITH AN APPROACHING COLD FRONT WILL
RESULT IN NUMEROUS THUNDERSTORMS ACROSS MISSISSIPPI TODAY AND TONIGHT.
THE THREAT OF THUNDERSTORMS WILL CONTINUE UNTIL AROUND MIDNIGHT ALONG
THE MISSISSIPPI RIVER AND UNTIL THE MORNING HOURS OF FRIDAY ACROSS THE
EASTERN COUNTIES.

THESE THUNDERSTORMS COULD PRODUCE IN EXCESS OF TWO INCHES OF RAIN OVER
MOST OF THE STATE.  HOWEVER...THE GREATEST THREAT OF HEAVY RAIN WILL BE
GENERALLY ALONG AND NORTH OF A HOLLANDALE TO COLUMBUS LINE WHERE A FLASH
FLOOD WATCH IS IN EFFECT TODAY AND TONIGHT.

IN ADDITION TO THE HEAVY RAINS...SEVERE THUNDERSTORMS ARE POSSIBLE OVER
ALL OF THE STATE TODAY AND MOST OF TONIGHT.  DUE TO THIS THREAT...IT IS
VERY LIKELY THAT SEVERE WEATHER WATCHES AND WARNINGS WILL BE ISSUED
LATER TODAY AND TONIGHT.

ALL INTERESTS IN MISSISSIPPI SHOULD STAY ABREAST OF DEVELOPING WEATHER
CONDITIONS TODAY AND TONIGHT.

Local storm report, Feb 15, 9:54 AM CST, 31 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MERIDIAN MS
0950 AM CST THU FEB 15 1990

0925 CST...UNION FIRE CHIEF REPORTED TREES AND POWER LINES DOWN...
           MARBLE SIZE HAIL...ROOF OFF BUSINESS IN AND AROUND
           UNION IN NEWTON COUNTY MISSISSIPPI.

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 15, 9:27 AM CST	Severe Thunderstorm Warning	JAN	Neshoba	33 min
Feb 15, 10:11 AM CST	Severe Thunderstorm Warning	JAN	Newton	34 min
Feb 15, 10:28 AM CST	Severe Thunderstorm Warning	JAN	Lauderdale	47 min
Feb 15, 10:42 AM CST	Severe Thunderstorm Warning	JAN	Kemper	33 min
Feb 15, 10:42 AM CST	Severe Thunderstorm Warning	JAN	Hinds, Warren	48 min
Feb 15, 11:03 AM CST	Severe Thunderstorm Warning	JAN	Jasper	27 min
Feb 15, 11:15 AM CST	Severe Thunderstorm Warning	JAN	Clarke, Lauderdale	60 min
Feb 15, 12:21 PM CST	Flash Flood Warning	JAN	Lauderdale	2 hr
Feb 15, 12:27 PM CST	Severe Thunderstorm Warning	JAN	Jasper	33 min
Feb 15, 12:40 PM CST	Severe Thunderstorm Warning	JAN	Newton	35 min
Feb 15, 12:45 PM CST	Severe Thunderstorm Warning	JAN	Simpson, Smith	45 min
Feb 15, 12:52 PM CST	Tornado Warning	JAN	Lauderdale	38 min
Feb 15, 12:55 PM CST	Tornado Warning	JAN	Amite	50 min
Feb 15, 12:59 PM CST	Tornado Warning	JAN	Simpson, Smith	31 min
Feb 15, 1:11 PM CST	Tornado Warning	JAN	Jefferson Davis	34 min
Feb 15, 1:21 PM CST	Tornado Warning	JAN	Scott	24 min
Feb 15, 1:24 PM CST	Tornado Warning	JAN	Jasper, Newton	51 min
Feb 15, 1:28 PM CST	Tornado Warning	JAN	Lauderdale	32 min
Feb 15, 1:33 PM CST	Tornado Warning	JAN	Covington, Smith	27 min
Feb 15, 1:42 PM CST	Tornado Warning	JAN	Kemper	48 min
Feb 15, 1:47 PM CST	Tornado Warning	JAN	Pike	18 min
Feb 15, 1:59 PM CST	Tornado Warning	JAN	Smith	31 min
Feb 15, 2:01 PM CST	Tornado Warning	JAN	Lauderdale	44 min
Feb 15, 2:05 PM CST	Tornado Warning	JAN	Lawrence, Lincoln	25 min
Feb 15, 2:26 PM CST	Tornado Warning	JAN	Jasper	49 min
Feb 15, 2:37 PM CST	Severe Thunderstorm Warning	JAN	Smith	38 min
Feb 15, 2:37 PM CST	Severe Thunderstorm Warning	JAN	Covington	23 min
Feb 15, 2:45 PM CST	Flash Flood Warning	JAN	Smith	3 hr
Feb 15, 2:45 PM CST	Flash Flood Warning	JAN	Covington, Jefferson Davis, Lawrence, Simpson	3 hr
Feb 15, 2:49 PM CST	Flash Flood Warning	JAN	Lauderdale	6 hr
Feb 15, 2:51 PM CST	Tornado Warning	JAN	Lauderdale	54 min
Feb 15, 3:41 PM CST	Tornado Warning	JAN	Jasper	49 min
Feb 15, 3:59 PM CST	Severe Thunderstorm Warning	JAN	Lauderdale	46 min
Feb 15, 4:16 PM CST	Severe Thunderstorm Warning	JAN	Adams, Jefferson	29 min
Feb 15, 4:29 PM CST	Severe Thunderstorm Warning	JAN	Bolivar	31 min
Feb 15, 4:51 PM CST	Severe Thunderstorm Warning	JAN	Hinds	39 min
Feb 15, 5:03 PM CST	Flash Flood Warning	JAN	Jasper	6 hr
Feb 15, 5:48 PM CST	Severe Thunderstorm Warning	JAN	Washington	27 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 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.