Alert archive / Tennessee / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 9, NWS Nashville, TN

March 22, 1991Marshall County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Mar 22, 1991, 6:16 PM CST for Marshall County, Tennessee. It was in force for 44 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: Mar 22, 1991, 6:16 PM CST (00:16 UTC)
Expired: Mar 22, 1991, 7:00 PM CST
In force: 44 min
Issued by: NWS Nashville, TN
Area: Whole counties

County Marshall County, TN

What was reported inside it

Time	Report	Where	Remark
Mar 22, 6:25 PM CST	Thunderstorm Wind 0	Marshall, 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

Nashville Metro, TN (KBNA), launched 00:00Z, 0.3 hours before the alert went out and 75 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 581 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 1260 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 394 m²/s²
0-3 km storm-relative helicity: 582 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 6.3

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, Mar 22, 4:40 PM CST, 1 hour 36 minutes before

TNZ010-011-222345-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NASHVILLE TN
438 PM CST FRI MAR 22 1991

AT 430 PM CST...THE WEATHER SERVICE RADAR IN NASHVILLE INDICATED
SCATTERED THUNDERSTORMS..SEVERAL WITH VERY HEAVY RAIN..OVER THE
NORTHWEST CORNER OF MIDDLE TENNESSEE NEAR CLARKSVILLE AND DOVER.

THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 45 MILES AN HOUR.

SCATTERED THUNDERSTORMS WITH HEAVY RAIN WERE ALSO OVER SOUTH CENTRAL
KENTUCKY BETWEEN LAKE BARKLEY..HOPKINSVILLE AND BOWLING GREEN..AND..
IN WEST TENNESSEE FROM PARIS TO HUNTINGDON AND JACKSON.

IN ADDITION TO HEAVY RAIN..THESE THUNDERSTORMS CAN PRODUCE DANGEROUS
LIGHTNING..WIND GUSTS TO 40 MILES AN HOU+R AND POSSIBLE SMALL HAIL.

ALSO...PERSONS IN MIDDLE TENNESSEEE ARE REMINDED THAT TORNADO WATCH
NUMBER 56 IS EFFECT TILL 9 PM CST.

Special weather statement, Mar 22, 5:46 PM CST, 30 minutes before

TNZ009-010-011-230045-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NASHVILLE TN
543 PM CST FRI MAR 22 1991

AT 530 PM CST...WEATHER SERVICE RADAR IN NASHVILLE INDICATED
SCATTERED THUNDERSTORMS..WITH VERY HEAVY RAIN..OVER THE WESTERN
PORTION OF MIDDLE TENNESSEE FROM DOVER AND CLARKSVILLE..SOUTHWEST
TO WAVERLY AND LINDEN.

THESE THUNDERSTORMS WERE MOVING NORTHEAST AT 60 MILES AN HOUR.

IN ADDITION TO HEAVY RAIN..THESE STORMS CONTAIN DANGEROUS LIGHTNING
..POSSIBLE SMALL HAIL AND WIND GUSTS NEAR 40 MILES AN HOUR.

ALSO...SCATTERED THUNDERSTORM ACTIVITY WAS OVER MUCH OF SOUTH
CENTRAL KENTUCKY FROM LAKE BARKLEY TO BOWLING GREEN..AND..IN WEST
TENNESSEE BETWEEN PARIS..CAMDEN AND SAVANNAH.

..TORNADO WATCH NUMBER 56 IS IN EFFECT FOR MIDDLE TENNESSEE UNTIL
9 PM.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 22, 6:05 PM CST	Severe Thunderstorm Warning	OHX	Cheatham, Williamson	40 min
Mar 22, 6:05 PM CST	Severe Thunderstorm Warning	OHX	Maury	40 min
Mar 22, 6:16 PM CST	Severe Thunderstorm Warning	OHX	Davidson, Robertson	44 min
Mar 22, 7:05 PM CST	Severe Thunderstorm Warning	OHX	Marshall, Rutherford	40 min
Mar 22, 7:05 PM CST	Severe Thunderstorm Warning	OHX	Davidson	40 min
Mar 22, 7:28 PM CST	Severe Thunderstorm Warning	OHX	Wilson	47 min
Mar 22, 7:53 PM CST	Severe Thunderstorm Warning	OHX	DeKalb, Putnam	67 min
Mar 22, 8:07 PM CST	Severe Thunderstorm Warning	OHX	Giles, Lawrence	68 min
Mar 22, 8:39 PM CST	Severe Thunderstorm Warning	OHX	Bedford, Marshall	51 min
Mar 22, 10:07 PM CST	Severe Thunderstorm Warning	OHX	Warren	53 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1991 Every severe thunderstorm warning in 1991

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.