Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 64, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Apr 8, 1998, 12:47 PM CDT for Fentress County, Scott County, Tennessee. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 8, 1998, 12:47 PM CDT (17:47 UTC)
- Expired
- Apr 8, 1998, 1:45 PM CDT
- In force
- 58 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
Counties Fentress County, TN, Scott County, TN
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 8, 11:00 AM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 5.8 hours before the alert went out and 172 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
- 5 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 1652 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.6
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.
NWS Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 8, 9:25 AM CDT, 3 hours 22 minutes earlier.
Area forecast discussion, Apr 8, 9:25 AM CDT, 3 hours 22 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 1025 AM EDT WED APR 8 1998 MORNING THUNDERSTORMS HAVE MOVED OUT OF KMRX 88D COVERAGE AREA...BUT MORE THUNDERSTORMS BEGINNING TO ENTER WESTERN EDGE OF KHTX 88D. WE ARE OBVIOUSLY UNSTABLE...AND WITH OUTFLOWS FROM SURROUNDING STORMS MOVING THROUGH THE AREA WE COULD HAVE THUNDERSTORMS POPPING UP ANYTIME THIS AFTERNOON WITH MORE ORGANIZED ACTIVITY THIS EVENING AS THE FRONT NEARS. RECOMMEND RAISING POPS TO LIKELY (80%) IN ALL EAST TN ZONES THIS AFTERNOON AND INCLUDE RISK OF SEVERE OVER PLATEAU (CSV) AND SOUTHERN VALLEY (CHA AND TYS) TO CORRESPOND TO SPC MODERATE AREA. ELSE LOOKS FINE. CRW...CONSIDER RAISING POPS TO LIKELY (70%) THIS AFTERNOON. DONT THINK IT WILL BE SEVERE...BUT DISSIPATING STORMS WILL TRACK THROUGH SOUTHEAST VA SIMILAR TO THIS MORNING. REST LOOKS OK. RDU...MAY CONSIDER ADDING RISK OF SEVERE STORMS...ELSE LOOKS GOOD. GH
In the hours before
Local storm report, Apr 8, 8:06 AM CDT, 4 hours 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
906 AM EDT WED APR 8 1998
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
610 AM MAYLAND TN 0.75 INCH HAIL
04/08/98 CUMBERLAND DIME SIZE HAIL BETWEEN 510
AND 515 CDT IN MAYLAND AND
BAtKER CROSSROADS COMMUNITIESSpecial weather statement, Apr 8, 9:00 AM CDT, 3 hours 47 minutes before
NCZ060-061-TNZ012>018-034>047-066>074-083>087-099>102-VAZ001-002-005- 006-008-090130- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 1000 AM EDT WED APR 8 1998 ...SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND TONIGHT... A SOUTHERLY WIND WAS BRINGING WARM AND MOIST AIR INTO THE AREA MAKING THE ATMOSPHERE UNSTABLE. A STRONG UPPER LEVEL STORM SYSTEM AND A SURFACE COLD FRONT WILL MOVE EAST ACROSS TENNESSEE THIS AFTERNOON TRIGGERING STRONG TO SEVERE THUNDERSTORMS THIS AFTERNOON AND INTO THE EVENING HOURS. THE BEST CHANCE FOR SEVERE THUNDERSTORMS WILL BE OVER THE CUMBERLAND PLATEAU AND THE SOUTHERN TENNESSEE VALLEY...GENERALLY ALONG AND SOUTH OF A LINE FROM CROSSVILLE TO KNOXVILLE. THE MAIN THREAT FROM THESE STORMS WILL BE LARGE HAIL AND STRONG STRAIGHT LINE WINDS...HOWEVER A FEW TORNDADOES ARE ALSO POSSIBLE AS WELL. EMERGENCY MANAGERS AND SKYWARN SPOTTERS SHOULD BE PREPARED TO BE ACTIVATED THIS AFTERNOON. THIS COULD BE A POTENTIALLY DANGEROUS SITUATION SO KEEP TUNED TO YOUR FAVORITE RADIO AND TELEVISION STATIONS...OR NOAA WEATHER RADIO FOR FURTHER STATEMENTS ON THIS DEVELOPING SITUATION. GH
Special weather statement, Apr 8, 9:00 AM CDT, 3 hours 47 minutes before
NCZ060-061-TNZ012>018-034>047-066>074-083>087-099>102-VAZ001-002-005- 006-008-090130- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 1000 AM EDT WED APR 8 1998 ...SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND TONIGHT... A SOUTHERLY WIND WAS BRINGING WARM AND MOIST AIR INTO THE AREA MAKING THE ATMOSPHERE UNSTABLE. A STRONG UPPER LEVEL STORM SYSTEM AND A SURFACE COLD FRONT WILL MOVE EAST ACROSS TENNESSEE THIS AFTERNOON TRIGGERING STRONG TO SEVERE THUNDERSTORMS THIS AFTERNOON AND INTO THE EVENING HOURS. THE BEST CHANCE FOR SEVERE THUNDERSTORMS WILL BE OVER THE CUMBERLAND PLATEAU AND THE SOUTHERN TENNESSEE VALLEY...GENERALLY ALONG AND SOUTH OF A LINE FROM CROSSVILLE TO KNOXVILLE. THE MAIN THREAT FROM THESE STORMS WILL BE LARGE HAIL AND STRONG STRAIGHT LINE WINDS...HOWEVER A FEW TORNDADOES ARE ALSO POSSIBLE AS WELL. EMERGENCY MANAGERS AND SKYWARN SPOTTERS SHOULD BE PREPARED TO BE ACTIVATED THIS AFTERNOON. THIS COULD BE A POTENTIALLY DANGEROUS SITUATION SO KEEP TUNED TO YOUR FAVORITE RADIO AND TELEVISION STATIONS...OR NOAA WEATHER RADIO FOR FURTHER STATEMENTS ON THIS DEVELOPING SITUATION. GH
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 4:52 AM CDT | Severe Thunderstorm Warning | MRX | Cumberland | 68 min |
| Apr 8, 1:00 PM CDT | Tornado Warning | MRX | Fentress, Scott | 60 min |
| Apr 8, 1:24 PM CDT | Severe Thunderstorm Warning | MRX | Morgan | 66 min |
| Apr 8, 2:02 PM CDT | Severe Thunderstorm Warning | MRX | Claiborne | 58 min |
| Apr 8, 2:27 PM CDT | Severe Thunderstorm Warning | MRX | Scott | 48 min |
| Apr 8, 2:35 PM CDT | Severe Thunderstorm Warning | MRX | Morgan | 55 min |
| Apr 8, 6:29 PM CDT | Severe Thunderstorm Warning | MRX | Cherokee | 61 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1998Every severe thunderstorm warning in 1998
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.