Alert archive / Tennessee / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 21, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jun 30, 1993, 6:56 PM EDT for Loudon County, Tennessee. It was in force for 64 min.
The area
The counties it named.
The facts
- Issued
- Jun 30, 1993, 6:56 PM EDT (22:56 UTC)
- Expired
- Jun 30, 1993, 8:00 PM EDT
- In force
- 64 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Loudon County, TN
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 10.9 hours before the alert went out and 211 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
- 1682 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 623 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTYS 302257 RRA SVRTYS TNC105-010000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE KNOXVILLE TN 656 PM EDT WED JUN 30 1993 THE NATIONAL WEATHER SERVICE IN KNOXVILLE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 800 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL TENNESSEE ...LOUDON COUNTY AT 655 PM EDT WEATHER RADAR SHOWED A SEVERE THUNDERSTORM ALONG THE ROANE AND LOUDOUN COUNTY BORDER MOVING SOUTHEAST AT 10 MPH. 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 BzUSINESS. 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, Jun 30, 5:31 PM EDT, 1 hour 25 minutes before
TNZ002-004-302230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KNOXVILLE TN 531 PM EDT WED JUN 30 1993 AT 530 PM WEATHER SERVICE RADAR SHOWED ISOLATED THUNDERSTORMS ALONG THE NORTH PART OF THE CUMBERLAND PLATEAU. THE STRONGEST THUNDERSTORM WAS OVER SOUTHERN SCOTT AND NORTHWEST ANDERSON COUNTIES. BRIEF PERIODS OF VERY HEAVY RAIN...STRONG GUSTY WINDS...DANGEROUS LIGHTNING...AND POSSIBLY SOME SMALL HAIL COULD RESULT IN THESE THUNDERSTORMS. MOVEMENT WAS SOUTHEAST AT 15 MPH. IF YOU SEE THREATENING WEATHER MOVING INTO YOUR AREA QUICKLY MOVE TO A STRONG BUILDING FOR YOUR PROTECTION.
Special weather statement, Jun 30, 5:32 PM EDT, 1 hour 24 minutes before
TNZ002-004-302230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KNOXVILLE TN 531 PM EDT WED JUN 30 1993 AT 530 PM WEATHER SERVICE RADAR SHOWED ISOLATED THUNDERSTORMS ALONG THE NORTH PART OF THE CUMBERLAND PLATEAU. THE STRONGEST THUNDERSTORM WAS OVER SOUTHERN SCOTT AND NORTHWEST ANDERSON COUNTIES. BRIEF PERIODS OF VERY HEAVY RAIN...STRONG GUSTY WINDS...DANGEROUS LIGHTNING...AND POSSIBLY SOME SMALL HAIL COULD RESULT IN THESE THUNDERSTORMS. MOVEMENT WAS SOUTHEAST AT 15 MPH. IF YOU SEE THREATENING WEATHER MOVING INTO YOUR AREA QUICKLY MOVE TO A STRONG BUILDING FOR YOUR PROTECTION.
Special weather statement, Jun 30, 5:35 PM EDT, 1 hour 21 minutes before
TNZ001-004-016-VAZ015-016-010300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BRISTOL TN 535 PM EDT WED JUN 30 1993 ...SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHWESTERN VIRGINIA... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHWESTERN VIRGINIA. THE COUNTIES IN THIS WATCH ARE BUCHANAN...DICKENSON...LEE...RUSSELL...SCOTT...TAZEWELL AND WISE. ALSO INCLUDED IS THE INDEPENDENT CITY OF NORTON. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN OR NEAR THE WATCH AREA. IF YOU OBSERVE SEVERE WEATHER...GET INTO SHELTER AND WAIT FOR CONDTIONS TO IMPROVE. STAY TUNDED TO LOCAL TV...RADIO OR NOAA WEATHER RADIO FOR FURTHER INFORMATION OR POSSIBLE WARNINGS.
Special weather statement, Jun 30, 5:39 PM EDT, 1 hour 17 minutes before
TNZ001-004-016-VAZ015-016-010300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BRISTOL TN 535 PM EDT WED JUN 30 1993 ...SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHWESTERN VIRGINIA... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHWESTERN VIRGINIA. THE COUNTIES IN THIS WATCH ARE BUCHANAN...DICKENSON...LEE...RUSSELL...SCOTT...TAZEWELL AND WISE. ALSO INCLUDED IS THE INDEPENDENT CITY OF NORTON. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN OR NEAR THE WATCH AREA. IF YOU OBSERVE SEVERE WEATHER...GET INTO SHELTER AND WAIT FOR CONDTIONS TO IMPROVE. STAY TUNDED TO LOCAL TV...RADIO OR NOAA WEATHER RADIO FOR FURTHER INFORMATION OR POSSIBLE WARNINGS.
Special weather statement, Jun 30, 6:25 PM EDT, 31 minutes before
TNZ001>016-VAZ008-009-013>016-KYZ006>009-WVZ003-004-006>008-
NCZ006>013-SCZ001>004-GAZ002-190045-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE BRISTOL TN
625 PM EDT WED JUN 30 1993
...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EXTREME
SOUTHWESTERN VIRGINIA UNTIL 11 PM EDT...
AT 6 25 PM...WIDELY SCATTERED THUNDERSTORMS...SOME WITH VERY
HEAVY RAIN...WERE OVER A 90 MILE WIDE AREA FROM 50 MILES
SOUTHWEST OF KNOXVILLE TENNESSEE...NORTH ACROSS EASTERN
KENTUCKY...TO 40 MILES NORTH OF HUNTINGTON WEST VIRGINIA.Special weather statement, Jun 30, 6:39 PM EDT, 17 minutes before
TNZ001>016-VAZ008-009-013>016-KYZ006>009-WVZ003-004-006>008-
NCZ006>013-SCZ001>004-GAZ002-190045-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE BRISTOL TN
625 PM EDT WED JUN 30 1993
...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR EXTREME
SOUTHWESTERN VIRGINIA UNTIL 11 PM EDT...
AT 6 25 PM...WIDELY SCATTERED THUNDERSTORMS...SOME WITH VERY
HEAVY RAIN...WERE OVER A 90 MILE WIDE AREA FROM 50 MILES
SOUTHWEST OF KNOXVILLE dTENNESSEE...NORTH ACROSS EASTERN
KENTUCKY...TO 40 MILES NORTH OF HUNTINGTON WEST VIRGINIA.The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 6:15 PM EDT | Severe Thunderstorm Warning | MRX | Roane | 45 min |
| Jun 30, 7:27 PM EDT | Severe Thunderstorm Warning | MRX | Monroe | 63 min |
| Jun 30, 7:45 PM EDT | Severe Thunderstorm Warning | MRX | Knox | 60 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1993Every severe thunderstorm warning in 1993
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.