Alert archive / Tennessee / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 9, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at May 1, 1990, 3:47 PM EDT for Sullivan County, Tennessee. It was in force for 58 min.
The area
The counties it named.
The facts
- Issued
- May 1, 1990, 3:47 PM EDT (19:47 UTC)
- Expired
- May 1, 1990, 4:45 PM EDT
- In force
- 58 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Sullivan County, TN
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
Huntington/Tri S, WV (KHTS), launched 12:00Z, 7.8 hours before the alert went out and 207 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
- 704 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 41 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 KTRI 011947 SVRTRI TNC163-012045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BRISTOL TN 347 PM EDT TUE MAY 1 1990 THE NATIONAL WEATHER SERVICE IN BRISTOL HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 445 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST TENNESSEE ...SULLIVAN COUNTY SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE QHAIL...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, May 1, 1:35 PM EDT, 2 hours 12 minutes before
TNZ002-TNZ004-011830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KNOXVILLE TN 133 PM EDT TUE MAY 1 1990 AT 1:25 PM EDT/12:25 PM EDT A LINE OF THUNDERSTORMS WAS LOCATED FROM 15 MILES WEST OF COOKEVILLE TO JELLICO. THE HEAVIEST THUNDERSTORMS IN THIS LINE WERE LOCATED IN THE SOUTHWEST CORNER OF FENTRESS COUNTY AND 10 MILES SOUTH OF ONEIDA. THESE THUNDERSTORMS ARE MOVING RAPIDLY EAST AT 40 MPH. PERSONS IN FENTRESS AND CAMPBELL COUNTIES SHOULD BE ALERT FOR THE POSSIBILITY OF DANGEROUS LIGHTNING, SMALL HAIL AND GUSTY WINDS AS THESE STORMS MOVE THROUGH THESE COUNTIES DURING THE NEXT HOUR.
Special weather statement, May 1, 1:41 PM EDT, 2 hours 6 minutes before
TNZ002-TNZ004-011830- SPECIAL WEATHER STATEMENT CORRECTED NATIONAL WEATHER SERVICE KNOXVILLE TN 133 PM EDT TUE MAY 1 1990 AT 1:25 PM EDT/12:25 PM CDT A LINE OF THUNDERSTORMS WAS LOCATED FROM 15 MILES WEST OF COOKEVILLE TO JELLICO. THE HEAVIEST THUNDERSTORMS IN THIS LINE WERE LOCATED IN THE SOUTHWEST CORNER OF FENTRESS COUNTY AND 10 MILES SOUTH OF ONEIDA. THESE THUNDERSTORMS ARE MOVING RAPIDLY EAST AT 40 MPH. PERSONS IN FENTRESS AND CAMPBELL COUNTIES SHOULD BE ALERT FOR THE POSSIBILITY OF DANGEROUS LIGHTNING, SMALL HAIL AND GUSTY WINDS AS THESE STORMS MOVE THROUGH THESE COUNTIES DURING THE NEXT HOUR.
Special weather statement, May 1, 2:46 PM EDT, 1 hour 1 minute before
TNZ001-020100- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BRISTOL TN 230 PM EDT TUE MAY 1 1990 ...SEVERE THUNDERSTORM WATCH UNTIL 9PM FOR NORTHEAST TENNESSEE... AT 230 PM EDT A STRONG THUNDERSTORM WITH VERY HEAVY RAINFALL WAS IN EXTREME SOUTHEAST KENTUCKY NEAR JENKINS. A LINE OF STRONG THUNDERSTORMS WITH HEAVY RAIN WERE IN A 20 MILE WIDE AREA FROM WALKER KENTUCKY TO CROSSVILLE TENNESSEE. AN AREA OF SCATTERED SHOWERS AND A FEW THUNDERSTORMS CONTINUED OVER SOUTHEAST KENTUCKY AND EAST TENNESSEE. THESE THEUNDERSTORMS WILL LIKELY PRODUCE STRONG GUSTY WINDS... DANGEROUS LIGHTNING...SMALL HAIL AND VERY HEAVY RAINFALL. FLOODING OF ROADS AND LOW LYING AREA ARE POSSIBLE WITH THE PASSAGE OF THESE STORMS. THE THUNDERSTORMS WERE MOVING TO THE EAST AT 40 MILES AN HOUR.
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 2:40 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne, Grainger | 65 min |
| May 1, 3:25 PM EDT | Severe Thunderstorm Warning | MRX | Greene, Hawkins | 65 min |
| May 1, 4:37 PM EDT | Severe Thunderstorm Warning | MRX | Unicoi, Washington | 53 min |
| May 1, 5:06 PM EDT | Severe Thunderstorm Warning | MRX | Monroe | 39 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; the sounding from the Mesonet's radiosonde archive.