Alert archive / Tennessee / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 40, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Apr 20, 1996, 12:05 PM EDT for Cocke County, Greene County, Hamblen County, Tennessee. It was in force for 40 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 20, 1996, 12:05 PM EDT (16:05 UTC)
- Expired
- Apr 20, 1996, 12:45 PM EDT
- In force
- 40 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
Counties Cocke County, TN, Greene County, TN, Hamblen County, TN
The radar
The Knoxville radar (KMRX), 30 km from the middle of the area, began a volume at 16:08 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 20, 12:05 PM EDT | Thunderstorm Wind 65 | Newport, 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 4.1 hours before the alert went out and 286 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
- 591 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 86 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 Apr 20, 1:16 AM EDT, 10 hours 49 minutes earlier.
Area forecast discussion, Apr 20, 1:16 AM EDT, 10 hours 49 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 115 AM EDT SAT APR 20 1996 DRY LINE CURRENTLY OVER CENTRAL PORTION OF COUNTRY WILL DIMINISH SIGNIFICANTLY AS IT MOVES EAST AND IMPACT ON MRX CWA WILL BE LIMITED. PLENTIFUL MOISTURE AVAILABLE HOWEVER DYMANICS WEAK. BUSY NIGHT IN MEMPHIS AREA SO WILL KEEP IT SHORT AND SWEET. CURRENT POP FORECAST FOR TENNESSEE AREA OF CWA MAY BE A LITTLE HIGH WITH LIKELY CATEGORY. PLENTY OF MOISTURE...BUT DYNAMICS APPEAR TO BE MOVING TO THE NORTH OF THE AREA AND WEAKENING WITH TIME. WORDING MAY BE BETTER WITH GOOD CHANCE OR EVEN CHANCE AND A MAINLY AFTERNOON TIME QUALIFIER. SUNDAY LOOKS OK THOUGH THIS MAY ALSO BE A LITTLE HIGH...NO$T ENOUGH FOR MAJOR CHANGES THERE THOUGH. TEMPS APPEAR REASONABLE...EVEN WITH THE POP CHANGES RECOMMENDED. FOR CHARLEY WEST...POPS FORECAST LOOKS REASONABLE...HOWEVER TEMPS MAY NEED TRIMING A LITTLE. NORTH CAROLINA PORTION OF CWA LOOKS GOOD.
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 9:47 AM EDT | Severe Thunderstorm Warning | MRX | Cumberland | 58 min |
| Apr 20, 9:53 AM EDT | Severe Thunderstorm Warning | MRX | Hamilton, Rhea | 67 min |
| Apr 20, 10:05 AM EDT | Severe Thunderstorm Warning | MRX | Bradley, McMinn, Meigs | 25 min |
| Apr 20, 10:21 AM EDT | Severe Thunderstorm Warning | MRX | Morgan, Roane | 39 min |
| Apr 20, 10:42 AM EDT | Severe Thunderstorm Warning | MRX | Bradley, Loudon, McMinn, Monroe, Polk | 48 min |
| Apr 20, 10:59 AM EDT | Severe Thunderstorm Warning | MRX | Anderson, Knox | 46 min |
| Apr 20, 11:10 AM EDT | Severe Thunderstorm Warning | MRX | Blount, Monroe | 50 min |
| Apr 20, 11:37 AM EDT | Severe Thunderstorm Warning | MRX | Sevier | 53 min |
| Apr 20, 11:34 AM EDT | Severe Thunderstorm Warning | MRX | Cherokee, Clay | 41 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1996Every severe thunderstorm warning in 1996
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.