Alert archive / Alabama / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 183, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jul 23, 1990, 1:10 PM CDT for Sumter County, Alabama. 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
- Jul 23, 1990, 1:10 PM CDT (18:10 UTC)
- Expired
- Jul 23, 1990, 1:45 PM CDT
- In force
- 35 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
County Sumter County, AL
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 |
|---|---|---|---|
| Jul 23, 1:30 PM CDT | Thunderstorm Wind 0 | Sumter, AL |
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
Centreville/Bibb, AL (KCKL), launched 12:00Z, 6.2 hours before the alert went out and 100 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
- 1365 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 824 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMEI 231811 SVRMEI ALC119-231845- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MERIDIAN MS 110 PM CDT MON JUL 23 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 WEST CENTRAL ALABAMA ...SUMTER COUNTY AT 110 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 15 MILES NORTHWEST OF LIVINGSTON ALABAMA MOVING EAST 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 BUSIN_ESS. 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, Jul 23, 11:05 AM CDT, 2 hours 5 minutes before
MSZ003-008-231700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 1105 AM CDT MON JUL 23 1990 ...THUNDERSTORMS DEVELOPING IN EXTREME WESTCENTRAL MISSISSIPPI... AT 1100 AM CDT...AN AREA OF THUNDERSTORMS WERE INDICATED ABY RADAR OVER THE WESTCENTRAL COUNTIES. THE STRONGEST THUNDERSTORM WAS LOCATED JUST NORTHEAST OF VICKSBURG. MOVEMENT WAS TO THE NORTHEAST AT 20 MILES AN AN HOUR. THESE STORMS ARE CAPABLE OF PRODUCING BRIEF HEAVY RAINFALL...FREQUENT LIGHTNING...AND WIND GUSTS TO OVER 40 MILES AN HOUR.
Special weather statement, Jul 23, 1:08 PM CDT, 2 minutes before
MSZALL-231845- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE JACKSON MS 105 PM CDT MON JUL 23 1990 THUNDERSTORMS CONTINUE OVER CENTRAL MISSISSIPPI. AT 100 PM CDT SCATTERED STRONG THUNDERSTORMS CONTINUED OVER CENTRAL MISSISSIPPI. THE STRONGER STORMS WERE LOCATED OVER SHARKEY...HUMPHREYS ...LEAKE...SCOTT AND KEMPER COUNTIES. THESE STORMS ARE CAPABLE OF PRODUCING WIND GUSTS OVER 40 MILES AN HOUR ...BRIEF HEAVY RAIN...FREQU[ENT LIGHTNING AND POSSIBLE HAIL AS THEY MOVE TO THE NORTHEAST AT 25 MILES AN HOUR. OTHER THUNDERSTORMS WERE SCATTERD ACROSS CENTRAL MISSISSIPPI...THE MISSISSIPPI DELTA AND SOUTHWEST MISSISSIPPI.
Nearby
Severe Thunderstorm Warnings in Alabama, 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.