Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 368, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jun 22, 1998, 7:57 PM EDT for Greene County, Tennessee. It was in force for 48 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
- Jun 22, 1998, 7:57 PM EDT (23:57 UTC)
- Expired
- Jun 22, 1998, 8:45 PM EDT
- In force
- 48 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Greene County, TN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 22, 8:17 PM EDT | Thunderstorm Wind | Greeneville, 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, 12.0 hours before the alert went out and 265 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
- 147 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1105 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 13 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 Jun 22, 7:30 PM EDT, 27 minutes earlier.
Area forecast discussion, Jun 22, 7:30 PM EDT, 27 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 730 PM EDT MON JUN 22 1998 A COMPLEX OF SHOWERS AND THUNDERSTORMS OVER NRN/ERN KY CONTINUES TO MOVE EAST SOUTHEAST TOWARD SW VA/NE TN/NRN PLATEAU. AMS ACROSS THE CWA REMAINS MOIST AND UNSTABLE WITH ADAP DEPICTING LI'S OF -7 TO -9 AND CAPES RANGING FROM 2500 TO 4000 J/KG. WOULD SUGGEST UPPING POPS TO LIKELY FOR CSV TO TYS NORTH (INCLUDING SW VA) AND 30 PERCENT FOR SE TN. ALSO...ADD 20-30 POPS FOR FAR SW NC. MAIN THREAT FROM THESE STORMS WILL BE TORRENTIAL RAINS/LOCALLIZED FLASH FLOODING AND DAMAGING DOWNBURSTS WINDS DUE TO THE MID-LVL DRY AIR. ONLY MARGINAL SVR HAIL ANTICIPATED DUE TO HIGH WBZ. WOULD SUGGEST INCLUDING LOCALLY HEAVY RAINFALL IN THE PUBLIC FCST. DH
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 9:56 PM EDT | Severe Thunderstorm Warning | MRX | Monroe | 64 min |
| Jun 22, 6:50 PM EDT | Severe Thunderstorm Warning | MRX | Anderson, Knox, Union | 35 min |
| Jun 22, 7:01 PM EDT | Severe Thunderstorm Warning | MRX | Sullivan | 49 min |
| Jun 22, 7:35 PM EDT | Severe Thunderstorm Warning | MRX | Knox | 65 min |
| Jun 22, 7:47 PM EDT | Flash Flood Warning | MRX | Sullivan | 4 hr |
| Jun 22, 7:58 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne | 62 min |
| Jun 22, 7:49 PM EDT | Severe Thunderstorm Warning | MRX | Lee, Wise | 66 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.