Alert archive / Tennessee / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 165, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Aug 19, 2001, 5:16 PM CDT for Marion County, Tennessee. It was in force for 29 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
- Aug 19, 2001, 5:16 PM CDT (22:16 UTC)
- Expired
- Aug 19, 2001, 5:45 PM CDT
- In force
- 29 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Marion County, TN
The radar
The Northeast Alabama radar (KHTX), 47 km from the middle of the area, began a volume at 22:17 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 |
|---|---|---|---|
| Aug 19, 5:30 PM CDT | Thunderstorm Wind | Haletown, TN | Trees down. |
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
Nashville Metro, TN (KBNA), launched 12:00Z, 10.3 hours before the alert went out and 142 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
- 75 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1399 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 181 m²/s²
- 0-3 km storm-relative helicity
- 245 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.7
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 Aug 19, 1:48 PM CDT, 3 hours 28 minutes earlier.
Area forecast discussion, Aug 19, 1:48 PM CDT, 3 hours 28 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 248 PM EDT SUN AUG 19 2001 MAIN PERIOD OF CONCERN THIS PACKAGE IS EARLY TONIGHT. STRONG CONVECTION IS CURRENTLY DEVELOPING ALONG THE COLD FRONT FROM NRN PARTS OF THE CUMBERLAND PLATEAU NE INTO ERN KY. THE COLD FRONT SHOULD WORK THRU MUCH OF THE FORECAST AREA BY 19/03Z...SO IN SPITE OF VERY LOW MOS POPS...I WILL CARRY 20-40% POPS FOR THIS EVENING. CAPES REACHING 1500-2500 J/KG AT THIS TIME...AND WATER VAPOR PICS SHOW DRY SLOT APPROACHING...SO WILL INCLUDE MENTION OF SOME STORMS MAY BE SEVERE. MONDAY INTO TUESDAY...UPPER TROUGH LIFTS NE AND RIDGING STARTS TO BUILD EASTWARD. A DRY PERIOD...ALTHO SHORT RANGE MODELS DO WORK PCPN AROUND THE UPPER RIDGE...INTO THE MID MISS VALLEY BY 12Z TUE. THIS MAINLY WOULD AFFECT WRN TN...BUT I DID TREND BACK TO PARTLY CLOUDY SKIES FOR TUE. OTHERWISE...MOS TEMPS ARE VERY CLOSE AND GENERALLY ACCEPTED THRU 60 HOURS. PRELIMINARY TEMPS/POPS FOLLOW BELOW FOR COORDINATION PURPOSES: CHA 65/87/62/89/64 20/-/0/- TYS 63/84/60/86/62 30/-/0/- TRI 60/80/56/82/57 40/-/0/- OQT 63/83/59/85/61 30/-/0/- .MRX... NC...NONE. TN...NONE. VA...NONE. TG
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 4:46 PM CDT | Severe Thunderstorm Warning | MRX | Knox | 44 min |
| Aug 19, 5:01 PM CDT | Severe Thunderstorm Warning | MRX | Hancock, Hawkins | 44 min |
| Aug 19, 5:24 PM CDT | Severe Thunderstorm Warning | MRX | Hamilton | 66 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2001Every severe thunderstorm warning in 2001
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.