Alert archive / Tennessee / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 54, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Mar 5, 1997, 10:21 AM EST for Campbell County, Tennessee. It was in force for 69 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
- Mar 5, 1997, 10:21 AM EST (15:21 UTC)
- Expired
- Mar 5, 1997, 11:30 AM EST
- In force
- 69 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Campbell County, TN
The radar
The Knoxville radar (KMRX), 72 km from the middle of the area, began a volume at 15:12 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 |
|---|---|---|---|
| Mar 5, 11:04 AM EST | Thunderstorm Wind | Countywide, 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, 3.4 hours before the alert went out and 338 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
- 848 m above ground
- 0-6 km bulk shear
- 95 kt
- 0-1 km storm-relative helicity
- 284 m²/s²
- 0-3 km storm-relative helicity
- 322 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.
NWS Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 5, 9:45 AM EST, 36 minutes earlier.
Area forecast discussion, Mar 5, 9:45 AM EST, 36 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 935 AM EST WED MAR 5 1997 STILL HAVE AFOS PROBLEMS...SO WILL LIKELY REMAIN UNDER DEDICATED BACK-UP TO MEM MOST OF THE MRNG...IF NOT ALL DAY. BNA/MRX RADAR SHOWS A LARGE AREA OF SHOWERS AND THUNDERSTORMS MOVING ACRS MID-TN INTO NRN PLATEAU. RADAR SHOWS SOME OF THE THUNDERSTORMS BOWING OUT WITH LOCALLY STG WINDS BEING REPORTED. BOTH BNA/MRX VWP SHOWS STG WINDS ALOFT WITH GRIDDED DATA SHOWING GENERALLY UNIDIRECTIONAL WINDS ALOFT THIS AFTERNOON...SO EXPECT STRAIGHT LINE WIND DAMAGE WILL REMAIN A THREAT. ALSO...RELATIVELY LOW WBZ ARE CONTRIBUTING TO PRODUCING LARGE HAIL. WE HAD A REPORT OF NICKEL SIZE HAIL ACRS NRN FENTRESS COUNTY. WOULD SUGGEST INCLUDING...SOME STORMS MAY PRODUCE LARGE HAIL AND DAMAGING WINDS FOR THIS AFTERNOON ACROSS EAST TENNESSEE AND CHEROKEE AND CLAY COUNTIES. RADAR IS ALSO SHOWING SOME TRAINING OF CELLS WITH MRX WSR-88D ESTIMATING UP TO ONE AN HOUR WITH THE STRONGER THUNDERSTORMS. GRIDDED DATA SHOWS HIGH PWS (AROUND 1.2 INCHES ~ ABOUT 275 PERCENT ABOVE NORMAL) EXPECTED ACROSS THE FORECAST AREA...SO FLASH FLOODING A DEFINITE THREAT FOR THIS AFTERNOON AND EVENING. HAVE A GOOD DAY... DH
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 5, 8:38 AM EST | Severe Thunderstorm Warning | MRX | Fentress | 52 min |
| Mar 5, 8:54 AM EST | Severe Thunderstorm Warning | MRX | Scott | 66 min |
| Mar 5, 9:39 AM EST | Severe Thunderstorm Warning | MRX | Cumberland, Fentress | 66 min |
| Mar 5, 9:59 AM EST | Severe Thunderstorm Warning | MRX | Morgan | 61 min |
| Mar 5, 10:04 AM EST | Severe Thunderstorm Warning | MRX | Scott | 56 min |
| Mar 5, 10:47 AM EST | Severe Thunderstorm Warning | MRX | Claiborne, Union | 58 min |
| Mar 5, 10:53 AM EST | Tornado Warning | MRX | Campbell | 37 min |
| Mar 5, 11:30 AM EST | Tornado Warning | MRX | Anderson, Campbell, Morgan, Scott | 60 min |
| Mar 5, 11:35 AM EST | Severe Thunderstorm Warning | MRX | Hancock | 55 min |
| Mar 5, 11:41 AM EST | Flash Flood Warning | MRX | Cumberland, Fentress, Morgan, Scott | 4 hr |
| Mar 5, 11:41 AM EST | Flash Flood Warning | MRX | Claiborne, Hancock | 4 hr |
| Mar 5, 11:41 AM EST | Flash Flood Warning | MRX | Anderson, Campbell, Union | 4 hr |
| Mar 5, 11:59 AM EST | Flash Flood Warning | MRX | Claiborne, Union | 46 min |
| Mar 5, 11:59 AM EST | Severe Thunderstorm Warning | MRX | Claiborne, Union | 46 min |
| Mar 5, 12:49 PM EST | Flash Flood Warning | MRX | Grainger, Hawkins | 4 hr |
| Mar 5, 2:10 PM EST | Severe Thunderstorm Warning | MRX | Rhea, Roane | 35 min |
| Mar 5, 2:36 PM EST | Severe Thunderstorm Warning | MRX | Knox, Loudon | 39 min |
| Mar 5, 2:54 PM EST | Severe Thunderstorm Warning | MRX | Blount, Sevier | 36 min |
| Mar 5, 3:29 PM EST | Severe Thunderstorm Warning | MRX | Cocke, Greene | 61 min |
| Mar 5, 4:09 PM EST | Severe Thunderstorm Warning | MRX | Carter | 51 min |
| Mar 5, 11:03 AM EST | Severe Thunderstorm Warning | MRX | Lee | 57 min |
| Mar 5, 12:49 PM EST | Flash Flood Warning | MRX | Scott, Wise | 4 hr |
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.