Alert archive / Tennessee / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 280, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Aug 19, 1997, 7:16 PM CDT for Cumberland County, Tennessee. It was in force for 59 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
- Aug 19, 1997, 7:16 PM CDT (00:16 UTC)
- Expired
- Aug 19, 1997, 8:15 PM CDT
- In force
- 59 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Cumberland 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 |
|---|---|---|---|
| Aug 19, 7:15 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.3 hours before the alert went out and 290 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
- 1249 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1276 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMRX 200020 RRA SVRMRX TNC035-200115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE KNOXVILLE TRI CITIES TN 816 PM EDT (716 PM CDT) TUE AUG 19 1997 THE NATIONAL WEATHER SERVICE IN KNOXVILLE TRI CITIES HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM EDT (815 PM CDT) FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST TENNESSEE ...CUMBERLAND COUNTY AT 715 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM OVER NORTHERN CUMBERLAND COUNTY NEAR MAYLAND AND PLEASANT HILL. THE STORM IS MOVING EAST AT 20 MPH AND WILL ALSO AFFECT THE CITY OF CROSSVILLE BETWEEN 730 AND 745 PM CDT. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
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 Aug 19, 6:53 PM CDT, 23 minutes earlier.
Area forecast discussion, Aug 19, 6:53 PM CDT, 23 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 750 PM EDT TUE AUG 19 1997 SVR TSRA MOVG STEADILY E ACRS MID TN AND SOME TSRA ALREADY ON THE PLATEAU SO WE MIGHT CHANGE MAINLY AFT MIDNITE WORDING HERE. UNSTABLE AIRMASS AND DECENT DYNAMICS WL COMBINE FOR AN ACTIVE NITE ACRS E TN (MOST OF FA AFT MIDNITE). REMAINDER OF FCST FINE BUT MINS MAY NEED TO BE RAISED A CAT AS CLOUDS INCREASE AND PRES GRAD TIGHTENS AHD OF SFC LOW PROXGGED TO SHIFT ENE THRU KY.
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 8:15 PM CDT | Severe Thunderstorm Warning | MRX | Cumberland | 60 min |
| Aug 19, 8:34 PM CDT | Severe Thunderstorm Warning | MRX | Morgan, Roane | 56 min |
| Aug 19, 11:10 PM CDT | Severe Thunderstorm Warning | MRX | Blount, Sevier | 65 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1997Every severe thunderstorm warning in 1997
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.