Alert archive / Tennessee / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 179, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jun 19, 1997, 7:34 PM EDT for Anderson County, Tennessee. It was in force for 26 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 19, 1997, 7:34 PM EDT (23:34 UTC)
- Expired
- Jun 19, 1997, 8:00 PM EDT
- In force
- 26 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Anderson County, TN
The radar
The Knoxville radar (KMRX), 72 km from the middle of the area, began a volume at 23:33 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 19, 7:50 PM EDT | Thunderstorm Wind | Clinton, TN |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.6 hours before the alert went out and 370 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
- 111 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1067 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 Jun 19, 3:00 PM EDT, 4 hours 34 minutes earlier.
Area forecast discussion, Jun 19, 3:00 PM EDT, 4 hours 34 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 300 PM EDT THU JUN 19 1997 MRX WSR-88D SHOWS ISOLATED TO WIDELY SCT CONVECTION ACROSS SE KY/ NRN PLATEAU AND WISE COUNTY OF SOUTHWEST VIRGINIA. THIS ACTIVITY WILL LIKELY BE DIURNAL IN NATURE AND WILL DISSIPATE BY AROUND SUNSET. WOULD SUGGEST HAVING A SLIGHT CHC OF EARLY EVENING THUNDERSTORMS FOR WESTERN COUNTIES OF SOUTHWEST VA AND NORTHERN PLATEAU. DUE TO CONTINUED WET GROUND AND PLENTY OF LO LVL MOISTURE...I ANTICIPATE ANOTHER ROUND OF FOG TONIGHT WITH SOME OF THE FOG BECOMING LOCALLY DENSE. MODELS IN GENERAL AGREEMENT WITH UPPER LVL FEATURES IN KEEPING MAIN WESTERLY FLOW WELL NORTH OF THE REGION. HOWEVER...A WEAK S/WV... CURRENTLY ACROSS THE GULF COAST STATES IS PROGGD TO LIFT SLOWLY NE TWD THE TN VALLEY THE NEXT 48 HOURS. UA ANALYSIS SHOWS RELATIVELY COOLER AIR ALOFT WITH THIS FEATURE AND EXPECT LAPSE RATES TO STEEPEN SOME...ESPECIALLY FOR SATURDAY AS 60 AVN HAS THE S/WV OVER THE FORECAST AREA. WOULD CALL FOR A 20 PERCENT CHC OF AFTERNOON/ EVENING THUNDERSTORMS FOR FRIDAY WITH A 30 PERCENT POP FOR SATURDAY AFTERNOON. OTHERWISE...PARTLY CLOUDY SKIES ANTICIPATED WITH MORNING FOG ANTICIPATED AGAIN FOR SATURDAY MORNING. DUE TO RELATIVELY MOIST SOILS...WOULD CONT TO TREND TWD THE COOLER FAN NOS. HAVE A GOOD NIGHT... DH
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.