Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 9, NWS Jackson, MS
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
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 2, 9:35 PM CST | Thunderstorm Wind 0 | Leflore, 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.
- 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
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 2, 7:51 PM CST | Severe Thunderstorm Warning | JAN | Rankin | 39 min |
| Feb 2, 8:06 PM CST | Severe Thunderstorm Warning | JAN | Issaquena | 39 min |
| Feb 2, 8:24 PM CST | Severe Thunderstorm Warning | JAN | Hinds | 36 min |
| Feb 2, 8:34 PM CST | Severe Thunderstorm Warning | JAN | Sunflower | 26 min |
| Feb 2, 8:45 PM CST | Severe Thunderstorm Warning | JAN | Washington | 30 min |
| Feb 2, 9:16 PM CST | Severe Thunderstorm Warning | JAN | Hinds | 29 min |
| Feb 2, 9:31 PM CST | Tornado Warning | JAN | Leflore, Tallahatchie | 29 min |
| Feb 2, 9:53 PM CST | Tornado Warning | JAN | Grenada | 37 min |
| Feb 2, 10:27 PM CST | Tornado Warning | JAN | Yalobusha | 33 min |
| Feb 2, 10:33 PM CST | Flash Flood Warning | JAN | Washington | 3 hr |
| Feb 2, 10:47 PM CST | Tornado Warning | JAN | Calhoun | 28 min |
| Feb 2, 11:26 PM CST | Severe Thunderstorm Warning | JAN | Bolivar | 34 min |
| Feb 3, 4:21 PM CST | Tornado Warning | JAN | Kemper, Neshoba, Noxubee, Winston | 54 min |
| Feb 3, 4:28 PM CST | Severe Thunderstorm Warning | JAN | Jasper | 32 min |
| Feb 3, 4:55 PM CST | Severe Thunderstorm Warning | JAN | Lamar, Marion | 35 min |
| Feb 3, 4:57 PM CST | Severe Thunderstorm Warning | JAN | Clarke | 48 min |
| Feb 3, 5:15 PM CST | Severe Thunderstorm Warning | JAN | Kemper | 45 min |
| Feb 3, 5:19 PM CST | Severe Thunderstorm Warning | JAN | Newton | 41 min |
| Feb 3, 5:25 PM CST | Severe Thunderstorm Warning | JAN | Lauderdale | 50 min |
| Feb 3, 5:57 PM CST | Severe Thunderstorm Warning | JAN | Jasper | 48 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.