Alert archive / Mississippi / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 34, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at May 21, 1990, 4:42 AM CDT for Tunica County, Mississippi. It was in force for 33 min.
The area
The counties it named.
The facts
- Issued
- May 21, 1990, 4:42 AM CDT (09:42 UTC)
- Expired
- May 21, 1990, 5:15 AM CDT
- In force
- 33 min
- Issued by
- NWS Memphis, TN
- Area
- Whole counties
County Tunica 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
Little Rock, AR (KLZK), launched 00:00Z, 9.7 hours before the alert went out and 44 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
- 3596 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 81 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 KMEM 210943 SVRMEM MSC143-211015- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MEMPHIS TN 442 AM CDT MON MAY 21 1990 THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 515 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHWEST MISSISSIPPI ...TUNICA COUNTY AT 435 SEVERE THUNDERSTORMS WERE MOVING INTO TUNICA COUNTY MISSISSIPPI TOWARD THE TOWNS OF TUNICA...EVANSVILLE AND DUNDEE. 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. HnEAVY 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, May 21, 3:35 AM CDT, 1 hour 7 minutes before
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
Special weather statement, May 21, 3:47 AM CDT, 55 minutes before
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
Special weather statement, May 21, 4:24 AM CDT, 18 minutes before
TNZ012-013-014-015-MSZ001-004-ARZ012-013-014-211030- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MEMPHIS TN 423 AM CDT MON MAY 21 1990 ...THUNDERSTORMS INCREASING NEAR TENNESSEE-ARKANSAS BORDER... AT 4 AM THUNDERSTORMS WITH HEAVY RAINS...SMALL HAIL AND GUSTY WINDS COVERED EXTREME WESTERN ARKANSAS AND PARTS OF WEST TENNESSEE. STRONGESACTIVITY WAS FROM JUST EAST OF JONESBORO TO NEAR FORREST CITY ARKANSASTHE STORMS WERE MOVING EAST AT 45 MILES AN HOUR. THUNDERSTORMS WILL THEREFORE BE INCREASING OVER ALL COUNTIES ALONG THE MISSISSIPPI RIVER WITH POSSIBLE SEVERE WEATHER DEVELOPING OVER THE MEMPHIS TENNESSEE VICINITY BEFORE 5 AM. OTHER HEAVY THUNDERSORMS HAVE PUSHED INTO PORTIONS OF NORTHWEST TENNESSEE WITH HAIL AND HEAVY RAINS OCCURRING NEAR PARIS. NEW THUNDERSTORMS WERE DEVELOPING OVER NORTHWEST MISSISSIPPI IN TUNICA COUNTY AND WERE ALSO PRODUCING HEAVY DOWNPOURS. IN ADDITION TO HAIL AND DAMAGING WINDMS THESE STORMS ARE CAPABLE OF CAUISING FLASH FLOODING. A FLASH FLOOD WATCH IS IN EFFECT FOR WEST TENNESSEE SO PERSONS SHOULD STAY ALERT FOR RISING WATERS WHEN THUNDERSTORMS APPROACH.
Special weather statement, May 21, 4:26 AM CDT, 16 minutes before
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
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.