Alert archive / Virginia / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 88, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Apr 12, 1997, 9:48 PM EDT for Washington County, Virginia. It was in force for 27 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
- Apr 12, 1997, 9:48 PM EDT (01:48 UTC)
- Expired
- Apr 12, 1997, 10:15 PM EDT
- In force
- 27 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Washington County, VA
The radar
The Knoxville radar (KMRX), 143 km from the middle of the area, began a volume at 01:52 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 |
|---|---|---|---|
| Apr 12, 9:52 PM EDT | Hail 1 | Lodi, VA |
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
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.8 hours before the alert went out and 198 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
- 78 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 505 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 37 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 Apr 12, 8:30 PM EDT, 1 hour 18 minutes earlier.
Area forecast discussion, Apr 12, 8:30 PM EDT, 1 hour 18 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 830 PM EDT SAT APR 12 1997 DUE TO STRONG TO SEVERE STORMS...AFD WILL BE SHORT. LINE OF STRONG STORMS WILL EXIT THE AREA BY MIDNIGHT. WOULD SUGGEST UPPING POPS FOR NORTHEAST TENNESSEE/SOUTHWEST VIRGINIA TO CAT UNTIL MIDNIGHT. DH
In the hours before
Local storm report, Apr 12, 7:44 PM EDT, 2 hours 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
734 PM EDT SAT APR 12 1997
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
515 PM NEAR ELGIN TN 0.50 INCH HAIL
04/12/97 SCOTT REPORTED BY SEVERE WEATHER
SPOTTER.
720 PM NE OF NORRIS TNB 0.75 INCH HAIL
04/12/97 ANDERSON REPORTED BY SHERIFFS DEPUTY.
716 PM NORTH OF MAYNARDVILLE TN 0.75 INCH HAIL
04/12/97 UNION REPORTED BY SHERIFFS DEPUTY.Local storm report, Apr 12, 9:25 PM EDT, 23 minutes before
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</html>The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 12, 8:27 PM EDT | Severe Thunderstorm Warning | MRX | Hawkins | 48 min |
| Apr 12, 8:32 PM EDT | Severe Thunderstorm Warning | MRX | Sullivan | 58 min |
| Apr 12, 8:10 PM EDT | Severe Thunderstorm Warning | MRX | Scott | 65 min |
| Apr 12, 8:53 PM EDT | Severe Thunderstorm Warning | MRX | Washington | 52 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 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.