Alert archive / Tennessee / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 5, NWS Memphis, TN

February 9, 1990Crockett County, Dyer County, Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Feb 9, 1990, 3:58 PM CST for Crockett County, Dyer County, Tennessee. It was in force for 47 min. 2 reports 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
Feb 9, 1990, 3:58 PM CST (21:58 UTC)
Expired
Feb 9, 1990, 4:45 PM CST
In force
47 min
Issued by
NWS Memphis, TN
Area
Whole counties

Counties Crockett County, TN, Dyer County, TN

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

TimeReportWhereRemark
Feb 9, 4:20 PM CSTThunderstorm Wind 0Crockett, TN
Feb 9, 4:25 PM CSTThunderstorm Wind 0Dyer, TN

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

Paducah/Barkley, KY (KPAH), launched 12:00Z, 10.0 hours before the alert went out and 136 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.

Skew-T log-pSkew-T log-p diagram, Paducah/Barkley, KY at 12:00Z on 1990-02-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 21 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Paducah/Barkley, KY at 12:00Z on 1990-02-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 373 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
21 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
546 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
373 m²/s²
0-3 km storm-relative helicity
394 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMEM 092158
SVRMEM
TNC033-045-092245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MEMPHIS TN
358 PM CST FRI FEB 9 1990
 
THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  445 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN WEST TENNESSEE
          ...CROCKETT...DYER
 
AT 355 PM RADAR REPORTS CONTINUED TO SHOW A SEVERE THUNDERSTORM MOVING
INTO SOUTHERN DYER AND MOST OF CROCKETT COUNTY. THIS STORM PRODUCED
A TORNADO IN THE PAST HOUR IN LAUDERDALE COUNTY AFTER IT CROSSED THE
MISSISSIPPI RIVER.
 
THE STORM WAS MOVING TO THE EAST NORTHEAST AT 45 MILES AN HOUR.
 
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
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, Feb 9, 3:30 PM CST, 28 minutes before
MSZ004-005-007-092230

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUPELO MS
330 PM CST FRI FEB 9 1990

...TORNADO WATCH NUMBER 21 IN EFFECT FOR PORTIONS OF NORTHERN
MISSISSIPPI...

AT 320 PM CST TIME NATIONAL WEATHER SERVICE RADAR INDICATED SCATTERED
THUNDERSTORMS WITH VERY HEAVY RAINS OVER PORTIONS OF NORTHERN
MISSISSIPPI. THE HEAVIEST ACTIVITY WAS NEAR EUPORA IN SOUTHERN
WEBSTER COUNTY...NEAR CHARLESTON IN EAST CENTRAL TALLAHATCHIE
COUNTY AND CALHOUN CITY IN CENTRAL CALHOUN COUNTY.
OTHERWISE RADAR INDICATED AREAS OF LIGHT TO MODERATE RAINS OVER
NORTHERN MISSISSIPPI.

MOVEMENT OF THE THUNDERSTORMS WAS EAST AT 50 MILES AN HOUR.

WITH THE PASSAGE OF THE THUNDERSTORMS HEAVY RAINS...FREQUENT
LIGHTNING AND GUSTY WINDS IN EXCESS OF 45 MILES AN HOUR CAN
BE EXPECTED.

PERSONS IN NORTHERN MISSISSIPPI NEED TO BE WEATHER ALERT AND
TAKE PROPER ACTION IF THREATENING WEATHER APPROACHES.

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 9, 3:23 PM CSTTornado WarningMEGLauderdale67 min
Feb 9, 5:01 PM CSTSevere Thunderstorm WarningMEGFayette44 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 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.