Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 73, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Aug 20, 1990, 6:57 PM CDT for Lee County, Mississippi. It was in force for 48 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
- Aug 20, 1990, 6:57 PM CDT (23:57 UTC)
- Expired
- Aug 20, 1990, 7:45 PM CDT
- In force
- 48 min
- Issued by
- NWS Memphis, TN
- Area
- Whole counties
County Lee 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 |
|---|---|---|---|
| Aug 20, 7:00 PM CDT | Hail 1 | Lee, 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
Little Rock, AR (KLZK), launched 12:00Z, 12.0 hours before the alert went out and 131 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3621 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 49 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 KTUP 202357 SVRTUP MSC081-210045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUPELO MS 657 PM CDT MON AUG 20 1990 THE NATIONAL WEATHER SERVICE IN TUPELO HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 745 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST MISSISSIPPI ...SOUTHERN LEE COUNTY AT 655 PM NATIONAL WEATHER SERVICE RADAR SHOWED A SEVERE THUNDERSTORM JUST SOUTH OF TUPELO MOVING EAST AT 5 MPH. THIS STORM HAS A HISTORY OF STRONG WIND WITH SEVERAL REPORTS OF TREES DOWN IN VERONA. 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. NNNN
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, Aug 20, 5:03 PM CDT, 1 hour 54 minutes before
MSZ005-007-202300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUPELO MS 500 PM CDT MON AUG 20 1990 AT 500 PM CDT NATIONAL WEATHER SERVICE RADAR SHOWED STRONG THUNDERSTORMS ACROSS MONROE AND LOWNDES COUNTY. THESE STORMS ARE CAPABLE OF PRODUCING GUSTY WINDS IN THE 40 TO 50 MPH RANGE...VERY HEAVY RAIN...FREQUENT LIGHTNING STRIKES AND POSSIBLE SMALL HAIL. ONE OF THESE STORM PRODUCED A WIND GUST OF 48 MPH AS IT MOVED ACROSS COUMBUS AIR FORCE BASE. YOU SHOULD STAY ALERT AND BE PREPARED TO SEEK A SAFE SHELTER IF A WARNING SHOULD BE ISSUED. THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOPE ACROSS NORTHEAST MISSISSIPPI THIS AFTERNOON IN THE HOT AND HUMID AIR OVER THE REGION. THEY WILL USTART TO DIMINISH SHORTLY AFTER SUNDOWN. STAY TUNED TO THIS STATION FOR THE LATEST WEATHER INFORMATION.
Special weather statement, Aug 20, 6:02 PM CDT, 55 minutes before
MSZ004-005-007-230000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TUPELO MS 602 PM CDT MON AUG 20 1990 AT 600 PM CDT NATIONAL WEATHER SERVICE RADAR SHOWED THUNDERSTORMS TO BE SCATTERED ACROSS MUCH OF NORTHEAST MISSISSIPPI. THE SEVERE THUNDERSTORM THAT WAS IN NORTHEAST LOWNDES COUNTY HAS WEAKEN AND THE WARNING HAS BEEN CANCELLED. THESE THUNDERSTORMS THIS AFTERNOON AND EARLY EVENING WILL BE CAPABLE OF PRODUCING GUSTY WINDS IN THE 40 TO 50 MPH...HEAVY RAINFALL...FREQUENT LIGHTNING STRIKES AND POSSIBLE HAIL AS THEY DEVELOPE AND MOVE SLOWLY ACROSS NORTHEAST MISSISSIPPI. YOU SHOULD STAY ALERT AND BE PREPARED TO SEEK A SAFE SHELTER IF A WARNING SHOULD BE ISSUED. SOME OF THESE STORMS WILL ALSO PRODUCE PONDING OF WATER ON ROADS AND STREETS. IF YOU ARE DRIVING IN NORTHEAST MISSISSIPPI THIS AFTERNOON AND EARLY EVENING YOU SHOULD USE EXTRA CAUTION IN THE VICINITY OF HEAVY RAIN. STAY TUNED TO THIS STATION FOR THE LATEST WEATHER INFORMATION. NNNN
The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 5:22 PM CDT | Severe Thunderstorm Warning | MEG | Lowndes | 53 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.