Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 181, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jul 23, 1990, 11:44 AM CDT for Madison County, Yazoo County, Mississippi. It was in force for 46 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, 11:44 AM CDT (16:44 UTC)
- Expired
- Jul 23, 1990, 12:30 PM CDT
- In force
- 46 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
Counties Madison County, MS, Yazoo 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 |
|---|---|---|---|
| Jul 23, 12:10 PM CDT | Thunderstorm Wind 0 | Madison, 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
Slidell Radar S, LA (KSIL), launched 12:00Z, 4.7 hours before the alert went out and 278 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
- 2378 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 651 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, 39 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.
The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 8:24 PM CDT | Severe Thunderstorm Warning | JAN | Carroll, Grenada, Montgomery | 36 min |
| Jul 23, 12:52 PM CDT | Severe Thunderstorm Warning | JAN | Kemper | 38 min |
| Jul 23, 3:55 PM CDT | Severe Thunderstorm Warning | JAN | Copiah | 35 min |
| Jul 23, 5:10 PM CDT | Severe Thunderstorm Warning | JAN | Claiborne, Warren | 35 min |
| Jul 23, 5:46 PM CDT | Severe Thunderstorm Warning | JAN | Hinds | 29 min |
| Jul 23, 6:01 PM CDT | Severe Thunderstorm Warning | JAN | Jasper | 44 min |
| Jul 23, 6:24 PM CDT | Severe Thunderstorm Warning | JAN | Clarke | 51 min |
| Jul 23, 1:10 PM CDT | Severe Thunderstorm Warning | JAN | Sumter | 35 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.