Alert archive / Tennessee / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 11, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at May 1, 1990, 5:06 PM EDT for Monroe County, Tennessee. It was in force for 39 min.
The area
The counties it named.
The facts
- Issued
- May 1, 1990, 5:06 PM EDT (21:06 UTC)
- Expired
- May 1, 1990, 5:45 PM EDT
- In force
- 39 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Monroe 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
Athens Municipal, GA (KAHN), launched 12:00Z, 9.1 hours before the alert went out and 187 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
- 870 J/kg
- Mixed-layer CIN
- -193 J/kg
- Mixed-layer LCL
- 1111 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -82 m²/s²
- 0-3 km storm-relative helicity
- -178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, May 1, 1:35 PM EDT, 3 hours 31 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, 3 hours 25 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, 2 hours 20 minutes 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, 3:47 PM EDT | Severe Thunderstorm Warning | MRX | Sullivan | 58 min |
| May 1, 4:37 PM EDT | Severe Thunderstorm Warning | MRX | Unicoi, Washington | 53 min |
| May 1, 2:36 PM EDT | Severe Thunderstorm Warning | MRX | Dickenson, Wise | 39 min |
| May 1, 3:05 PM EDT | Severe Thunderstorm Warning | MRX | Russell | 25 min |
| May 1, 3:22 PM EDT | Severe Thunderstorm Warning | MRX | Scott | 38 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.