Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 175, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jul 8, 1990, 6:33 PM CDT for Kemper County, Lauderdale County, Mississippi. It was in force for 42 min.
The area
The counties it named.
The facts
- Issued
- Jul 8, 1990, 6:33 PM CDT (23:33 UTC)
- Expired
- Jul 8, 1990, 7:15 PM CDT
- In force
- 42 min
- Issued by
- NWS Jackson, MS
- Area
- Whole counties
Counties Kemper County, MS, Lauderdale 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, 11.6 hours before the alert went out and 137 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
- 57 J/kg
- Mixed-layer CIN
- -145 J/kg
- Mixed-layer LCL
- 1650 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMEI 082335 SVRMEI MSC069-075-090015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MERIDIAN MS 633 PM CDT SUN JUL 8 1990 THE NATIONAL WEATHER SERVICE IN MERIDIAN HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 715 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL MISSISSIPPI ...KEMPER COUNTY...LAUDERDALE COUNTY AT 5:25 PM CDT MERIDIAN WEATHER RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES NORTH OF MERIDIAN MOVING EAST AT 10 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, Jul 8, 3:07 PM CDT, 3 hours 26 minutes before
MSZALL-082215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSON MS 306 PM CDT SUN JUL 8 1990 ...HEAT INDEX AROUND 110 OVER MUCH OF MISSISSIPPI THIS AFTERNOON AND MONDAY... THE UPPER LEVEL HIGH PRESSURE SYSTEM WHICH HAS BEEN NEARLY STATIONARY OVER THE MID SOUTH HAS RESULTED IN ANOTHER DAY OF UNCOMFORTABLY HOT WEATHER. AT MID AFTERNOON...TEMPERATURES HAD WARMED INTO THE MID TO UPPER 90S STATEWIDE. THE HUMIDITIES HAVE REMAINED HIGH ENOUGH TO PRODUCE A HEAT INDEX BETWEEN 105 AND 110 OVER MUCH OF THE STATE. PEOPLE SHOULD AVOID PROLONGED PERIODS OF UNNECESSARY AND STRESSFUL OUTDOOR ACTIVITY. IF POSSIBLE...WAIT UNTIL A COOLER TIME OF THE DAY. LITTLE CHANGE IS EXPECTED MONDAY. IT IS HIGHLY LIKELY THAT THE HEAT INDEX WILL AGAIN RISE TO AROUND 110 DURING THE LATE AFTERNOON. A LONG RANGE LOOK INTO THE WEEK SHOWS SOME HOPE. THE UPPER LEVEL HIGH WILL BE BREAKING DOWN AROUND THE MIDDLE OF THE WEEK. THIS MAY MEAN A RETURN TO LESS OPPRESSIVE CONDITIONS BY THE END OF THE WEEK.
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.