Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 79, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Apr 22, 1990, 12:50 PM CDT for Jones County, Mississippi. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Apr 22, 1990, 12:50 PM CDT (17:50 UTC)
- Expired
- Apr 22, 1990, 1:45 PM CDT
- In force
- 55 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.
The nearest sounding before it
Jackson, MS (KJAN), launched 12:00Z, 5.8 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.
- Mixed-layer CAPE
- 1566 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 655 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMEI 221751 SVRMEI MSC067-221845- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MERIDIAN MS 1250 PM CDT SUN APR 22 1990 THE NATIONAL WEATHER SERVICE IN MERIDIAN HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 145 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL MISSISSIPPI ...JONES COUNTY AT 1250 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM NEAR 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.
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 22, 11:35 AM CDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE JACKSON MS 1125 AM CDT SUN APR 22 1990 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 4:00 PM FOR PORTIONS OF CENTRAL AND WESTERN MISSISSIPPI. AT 1125 AM...ONE ISOLATED THUNDERSTORM WITH HEAVY RAINFALL WAS INDICATED IN THE DELTA 25 MILES SOUTHEAST OF GREENVILLE NEAR SILVER CITY. OTHERWISE...NUMEROUS THUNDERSTORMS AND SCATTERED LIGHT RAINSHOWERS BEGAN DEVELOPING OVER EAST CENTRAL AND SOUTHEAST MISSISSIPPI DURING THE PAST HOUR. OTHER ISOLATED THUNDERSTORMS AND LIGHT RAINSHOWERS WERE OCCURRING IN NORTHEAST LOUISIANA AND SOUTHEAST ARKANSAS. MOVEMENT WAS SOUTHEAST AT 10 MILES AN HOUR OR LESS.
Special weather statement, Apr 22, 11:39 AM CDT, 1 hour 11 minutes before
MSZ009-012-ALZ008-013-221800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MERIDIAN MS 1135 AM CDT SUN APR 22 1990 SEVERE THUNDERSTORM WATCH NUMBER 140 WHICH INCLUDES LAUDERDALE... NEWTON...KEMPER...NESHOBA AND WINSTON COUNTIES IN EAST CENTRAL MISSISSIPPI IN EFFECT UNTIL 4 PM CDT. AT 1135 AM CDT MERIDIAN RADAR INDICATED SHOWERS AND THUNDERSTORMS DEVELOPING RAPIDLY ALONG AND SOUTH OF A LINE FROM JACKSON TO MERIDIAN MISSISSIPPI. COVERAGE AND INTENSITY INCREASED DURING THE PAST HOUR. LITTLE MOVEMENT WAS INDICATED. THUNDERSTORMS ARE EXPECTED TO CONTINUE TO INCREASE IN COVERAGE AND INTENSITY AND PERSONS IN AND CLOSE TO THE WATCH AREA SHOULD BE ALERT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS OR POSSIBLE WARNINGS. <<
Special weather statement, Apr 22, 11:41 AM CDT, 1 hour 9 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE JACKSON MS 1125 AM CDT SUN APR 22 1990 SEVERE THUNDERSTORM WATCH NUMBER 140 REMAINS IN EFFECT UNTIL 4:00 PM FOR PORTIONS OF CENTRAL AND WESTERN MISSISSIPPI. AT 1125 AM...ONE ISOLATED THUNDERSTORM WITH HEAVY RAINFALL WAS INDICATED IN THE DELTA 25 MILES SOUTHEAST OF GREENVILLE NEAR SILVER CITY. OTHERWISE...NUMEROUS THUNDERSTORMS AND SCATTERED LIGHT RAINSHOWERS BEGAN DEVELOPING OVER EAST CENTRAL AND SOUTHEAST MISSISSIPPI DURING THE PAST HOUR. OTHER ISOLATED THUNDERSTORMS AND LIGHT RAINSHOWERS WERE OCCURRING IN NORTHEAST LOUISIANA AND SOUTHEAST ARKANSAS. MOVEMENT WAS SOUTHEAST AT 10 MILES AN HOUR OR LESS.
Special weather statement, Apr 22, 12:32 PM CDT, 18 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE JACKSON MS 1225 PM CDT SUN APR 22 1990 SEVERE THUNDERSTORM WATCH NUMBER 140 REMAINS IN EFFECT UNTIL 4:00 PM FOR PORTIONS OF CENTRAL AND WESTERN MISSISSIPPI. AT 1225 PM THUNDERSTORM ACTIVITY OVER CENTRAL AND SOUTHEAST MISSISSIPPI HAD INCREASED RAPIDLY. HEAVIEST THUNDERSTORMS WERE OCCURRING 15 MILES SOUTHEAST OF YAZOO CITY...15 MILE SOUTHEAST OF HOLLY BLUFF...NEAR LAUREL AND RALEIGH...AND SOUTH OF FOREST. WHILE THESE THUNDERSTORMS HAVE NOT REACHED SEVERE LIMITS...THEY ARE CAPABLE OF PRODUCING LOCALLY HEAVY RAIN..STRONG GUSTY WINDS...SMALL HAIL..AND CLOUD TO GROUND LIGHTNING. PERSONS IN THE PATH OF THESE THUNDERSTORMS SHOULD REMAIN ALERT FOR RAPIDLY CHANGING CONDITIONS. MOVEMENT WAS SOUTHEAST AT 15 MILES AN HOUR.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 1:04 PM CDT | Severe Thunderstorm Warning | JAN | Jasper | 116 min |
| Apr 22, 2:03 PM CDT | Severe Thunderstorm Warning | JAN | Issaquena | 27 min |
| Apr 22, 2:30 PM CDT | Severe Thunderstorm Warning | JAN | Issaquena | 30 min |
| Apr 22, 3:34 PM CDT | Severe Thunderstorm Warning | JAN | Warren | 26 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.