Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 59, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Apr 3, 1998, 7:20 PM EST for Johnson County, Tennessee. It was in force for 25 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 3, 1998, 7:20 PM EST (00:20 UTC)
- Expired
- Apr 3, 1998, 7:45 PM EST
- In force
- 25 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Johnson County, TN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 3, 7:30 PM EST | Thunderstorm Wind 52 | Mountain City, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 3, 6:00 PM EST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.3 hours before the alert went out and 180 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
- 1030 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 266 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 3, 2:25 PM EST, 4 hours 55 minutes earlier.
Area forecast discussion, Apr 3, 2:25 PM EST, 4 hours 55 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 225 PM EST FRI APR 3 1998 WL NEED TO BE BRIEF AS TSTMS ARE QUICKLY FIRING UP AND SITUATION WL CONT TO DVLP RAPIDLY. TOR WATCH NOW IN EFFECT TIL 01Z FOR PLATEAU/SE TN/WRN VALLEY COUNTIES. SVR WX LIKELY AS NMRS INGREDIENTS COMING TGTHR FOR LARGE OUTBREAK. NOT MUCH CHG FM 00Z MODELS XCPT THAT ETA IS NOW A BIT FASTER AND MORE IN LINE W/NGM. SFC LOW WL RACE DUE E ALONG KY/TN BRDR THIS EVE W/COLD FNT XTNDG S FM LOW. XPCT FROPA IN CWA ARND 03-06Z. SOME LINGERING LGT RAIN PSBL IN NE TN/SW VA THRU SAT MORN..AND INTO EARLY AFTN IN SW VA. FCST SNDGS INDICATE SOME BRKS PSBL IN SE TN/SW NC. RIDGING SFC & ALOFT SAT NGT & SUN ACRS CWA WL DRY THINGS OUT AND CLR OUT THE CLDS. XPCTG MSTLY CLR SAT NGT..MSTLY SUNNY SUNDAY. FWC TEMPS LOOK GOOD THRU THE PD. HSA
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 7:10 PM EST | Severe Thunderstorm Warning | MRX | Bradley, McMinn, Monroe, Polk | 65 min |
| Apr 3, 7:13 PM EST | Severe Thunderstorm Warning | MRX | Meigs, Rhea | 32 min |
| Apr 3, 7:15 PM EST | Severe Thunderstorm Warning | MRX | Hamilton | 30 min |
| Apr 3, 7:38 PM EST | Severe Thunderstorm Warning | MRX | Carter | 52 min |
| Apr 3, 7:35 PM EST | Severe Thunderstorm Warning | MRX | Cherokee | 55 min |
| Apr 3, 8:16 PM EST | Severe Thunderstorm Warning | MRX | Clay | 29 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 1998Every severe thunderstorm warning in 1998
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.