Alert archive / Tennessee / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 209, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Aug 26, 1996, 5:39 PM EDT for Polk County, Tennessee. It was in force for 66 min. 2 reports 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 26, 1996, 5:39 PM EDT (21:39 UTC)
- Expired
- Aug 26, 1996, 6:45 PM EDT
- In force
- 66 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Polk County, TN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 26, 5:50 PM EDT | Hail 1.75 | Ocoee, TN | |
| Aug 26, 6:15 PM EDT | Thunderstorm Wind | Benton, 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.7 hours before the alert went out and 195 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
- 1196 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 607 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- -4 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 Aug 26, 3:30 PM EDT, 2 hours 9 minutes earlier.
Area forecast discussion, Aug 26, 3:30 PM EDT, 2 hours 9 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 330 PM EDT MON AUG 26 1996 RATHER WEAK WX PATTERN CONTS ACROSS SE STATES THRU THE FCST PD. SCT SHWRS/TSTMS XTNDG FROM NRN PLATEAU TO SRN MID TN SHLD DIE OUT W/SS. XPCTG ANTHR NGT OF FAIR SKIES W/LATE NGT/EARLY AM FOG. COLD FRONT & ASSOC VORT SHEAR AXIS SLOWLY MOVG OUR WAY FROM THE NW DURING TUES MOVG THRU LOWER OHIO VALLEY TUE AFTN. GRIDDS DEPICTING GOOD 1000-850 MB CONVERG DURING THE DAY ACRS MY CWA. E TN ALSO NEAR FAVORABLE RRQ OF 300 MB JET MAX PASSING OVHD. WOULD GO FOR POPS ARND 40 PCT. TUES NIGHT FRONT DROPS INTO TN. DYNAMICS NOT VERY IMPRESSIVE AS VORT CENTER STAYS TO OUR N. HOWEVER WOULD KEEP A 20 PCT CHC SHWRS/TSTMS IN FCST. ON WED..MAIN VORT CENTER WL BE TO OUR N & E W/TAIL END OF FRONT MOVG VERY SLOWLY SE THRU TN OR EVEN BECMG STNRY AS IT MOVES AWAY FROM MAIN UPPER LVL FLOW. W/FRONT IN THE AREA AND STILL LOTS OF MOISTURE TO WORK WITH WOULD KEEP IN ARND 30 PCT POPS. GUIDANCE TEMPS CLOSE THRU THE PD AND SEEM REASONABLE. HSA
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 4:37 PM EDT | Severe Thunderstorm Warning | MRX | Hamilton | 68 min |
| Aug 26, 5:06 PM EDT | Severe Thunderstorm Warning | MRX | Loudon | 54 min |
| Aug 26, 5:09 PM EDT | Severe Thunderstorm Warning | MRX | Roane | 36 min |
| Aug 26, 5:19 PM EDT | Severe Thunderstorm Warning | MRX | Bradley | 41 min |
| Aug 26, 5:22 PM EDT | Severe Thunderstorm Warning | MRX | Knox | 38 min |
| Aug 26, 7:58 PM EDT | Flash Flood Warning | MRX | Cumberland | 2 hr |
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.