Alert archive / Tennessee / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 40, NWS Memphis, TN

April 27, 1994Weakley County, Tennessee

NWS Memphis, TN issued this severe thunderstorm warning at Apr 27, 1994, 6:03 PM CDT for Weakley County, Tennessee. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Apr 27, 1994, 6:03 PM CDT (23:03 UTC)
Expired
Apr 27, 1994, 6:45 PM CDT
In force
42 min
Issued by
NWS Memphis, TN
Area
Whole counties

County Weakley County, TN

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 12:00Z, 11.1 hours before the alert went out and 86 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 1994-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1797 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 1994-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 square meters per square second.193958Sfc1 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
1797 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
618 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
1.0
Supercell composite
4.8

Open this sounding in Storm Lab

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, Apr 27, 4:12 PM CDT, 1 hour 51 minutes before
MSZ005-006-009-017-016-003-004-014-015-023-024-030-031-272215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUPELO MS
412 PM CDT WED APR 27 1994

...SEVERE THUNDERSTORM WATCH NUMBER 157 HAS BEEN ISSUED FOR A PORTION
OF NORTHEAST MISSISSIPPI UNTIL 1000 PM CDT...

AT 400 PM CDT...NATIONAL WEATHER SERVICE RADAR IN TUPELO INDICATED
SCATTERED STRONG THUNDERSTORMS IN SOUTHERN TENNESSEE AND NORTHWEST
ALABAMA. HOWEVER...NO THUNDERSTORM ACTIVITY WAS INDICATED IN NORTH
MISSISSIPPI...ALTHOUGH THUNDERSTORMS ARE LIKELY TO DEVELOP IN NORTH
MISSISSIPPI LATER IN THE DAY.

STAY TUNED TO THIS STATION FOR THE LATEST WEATHER INFORMATION.

NNNN
Special weather statement, Apr 27, 5:13 PM CDT, 50 minutes before
MSZ005-006-009-017-016-002-003-004-013-014-015-023-024-030-031-
033-272315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TUPELO MS
513 PM CDT WED APR 27 1994

...SEVERE THUNDERSTORM WATCH NUMBER 157 IS IN EFFECT FOR MUCH OF
NORTHEAST MISSISSIPPI UNTIL 1000 PM CDT...

AT 500 PM CDT...NATIONAL WEATHER SERVICE RADAR IN TUPELO INDICATED
AN ISOLATED STRONG THUNDERSTORM IN CENTRAL CLAY COUNTY. THIS STORM
APPEARS TO BE WEAKENING...BUT MAY STILL BE CAPABLE OF PRODUCING VERY
HEAVY RAIN...DANGEROUS LIGHTNING...AND STRONG GUSTY WINDS.

WEAKER THUNDERSTORM ACTIVITY HAD BEGUN TO FORM ALONG THE MISSISSIPPI
RIVER IN EXTREME NORTHWEST MISSISSIPPI.

ELSEWHERE...SCATTERED STRONG THUNDERSTORMS HAVE PERSISTED IN SOUTHERN
TENNESSEE AND NORTHWEST ALABAMA.

THESE STORMS WERE MOVING VERY SLOWLY TO THE NORTHEAST AT 5 TO 10
MPH...THEREFORE AREAS THAT ARE AFFECTED BY THUNDERSTORMS THIS EVENING
COULD PRODUCE EXTENDED PERIODS OF HEAVY RAIN.

STAY TUNED TO THIS STATION FOR LATER STATEMENTS AND POSSIBLE WARNINGS.

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 7:00 PM CDTTornado WarningMEGDeSoto45 min
Apr 26, 7:18 PM CDTSevere Thunderstorm WarningMEGMarshall42 min
Apr 26, 7:21 PM CDTTornado WarningMEGTate54 min
Apr 26, 7:45 PM CDTTornado WarningMEGMarshall45 min
Apr 27, 1:55 PM CDTSevere Thunderstorm WarningMEGItawamba, Lee50 min
Apr 27, 5:54 PM CDTSevere Thunderstorm WarningMEGTunica36 min
Apr 27, 6:26 PM CDTSevere Thunderstorm WarningMEGDeSoto, Tate49 min
Apr 27, 5:20 PM CDTSevere Thunderstorm WarningMEGLake25 min
Apr 27, 5:26 PM CDTSevere Thunderstorm WarningMEGGibson34 min
Apr 27, 5:32 PM CDTSevere Thunderstorm WarningMEGHenderson43 min
Apr 27, 5:45 PM CDTSevere Thunderstorm WarningMEGObion45 min
Apr 27, 6:32 PM CDTSevere Thunderstorm WarningMEGShelby43 min
Apr 27, 2:34 PM CDTSevere Thunderstorm WarningMEGClay56 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1994Every severe thunderstorm warning in 1994

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.