Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 305, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jun 5, 1998, 6:51 AM EDT for Hamilton County, Tennessee. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 5, 1998, 6:51 AM EDT (10:51 UTC)
- Expired
- Jun 5, 1998, 7:40 AM EDT
- In force
- 49 min
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Hamilton County, TN
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 10.9 hours before the alert went out and 167 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
- 12 J/kg
- Mixed-layer CIN
- -212 J/kg
- Mixed-layer LCL
- 641 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 200 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 5, 2:45 AM EDT, 4 hours 6 minutes earlier.
Area forecast discussion, Jun 5, 2:45 AM EDT, 4 hours 6 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 245 AM EDT FRI JUN 5 1998 AND THE BEAT GOES ON....LOOKS LIKE ANOTHER DAY OF WIDESPREAD CONVECTION WITH ASSOCIATED HEAVY RAINFALL ACRS THE FA AS SFC BOUNDARY REMAINS IN PLACE ACRS TN AND TWO DECENT S/WVS SHIFT E. 1ST ROUND APPEARING ON RADARS TO THE WEST ACRS MID MS VLY REGION WHICH WL PROVIDE NUMEROUS SHRA/TSRA AT BEGINNING OF 1ST PD WHICH WL LAST INTO MID/LATE AM HOURS AND 2ND ROUND FOR THIS AFTERNOON AS NEXT WAVE MAKES ITS MOVE. WOULD EXPECT BEST CHC FOR HEAVIEST RAIN/SVR WX THREAT ACRS PLATEAU/CNTRL AND SRN VLY/SRN MTN ZONES WHERE BEST INSTABILITY/MSTR CONVERGENCE WL EXIST THRU EARLY EVE. KIND OF LIKE CATEGORICAL POPS PROVIDED BY FWC GUIDANCE FOR 1ST PD. FLASH FLOOD THREAT STILL POSSIBLE TODAY IN SRN ZONES. SYSTEM/FNT SHIFT E AND DROP SLOLY INTO SRN VLY/SRN MTN ZONES TONITE BUT WOULD KEEP LKLY POPS GOING AS AM NOT CONVINCED THAT FNT WL ACTUALLY MOV VERY FAR FM CURRENT POSITION AND ADDITIONAL VORT LOBES IDENTIFIED ON MODELS TO PASS ACRS FA TONITE. > LIKE SENARIO FM PREVIOUS PACKAGE FOR SAT ACRS FA BUT WOULD RAISE POPS TO 40% SRN VLY/SRN MTNS AS BELIEVE FNT WL NOT BE FAR TO THE SOUTH AS UPR LVL FLO BASICALLY PARALLELS FNT WITH YET ANOTHER S/WV EXPECTED IN AREA DURING THE DAY. FWC TEMPS NOT BAD 1ST TWO PDS BUT WOULD TREND CLOSER TO FAN MAXES FOR 3RD PD.
The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 5:23 AM EDT | Flash Flood Warning | MRX | Cumberland | 3 hr |
| Jun 5, 6:55 AM EDT | Severe Thunderstorm Warning | MRX | Hamilton | 45 min |
| Jun 5, 7:38 AM EDT | Flash Flood Warning | MRX | Bradley, Polk | 2 hr |
| Jun 5, 7:38 AM EDT | Flash Flood Warning | MRX | Hamilton | 2 hr |
| Jun 5, 9:06 AM EDT | Flash Flood Warning | MRX | Sevier | 3 hr |
| Jun 5, 6:26 PM EDT | Severe Thunderstorm Warning | MRX | Monroe | 34 min |
| Jun 5, 6:50 PM EDT | Flash Flood Warning | MRX | Monroe | 3 hr |
| Jun 5, 7:03 PM EDT | Severe Thunderstorm Warning | MRX | Knox | 32 min |
| Jun 5, 7:08 PM EDT | Severe Thunderstorm Warning | MRX | Grainger | 32 min |
| Jun 5, 7:11 PM EDT | Flash Flood Warning | MRX | Cumberland | 3 hr |
| Jun 5, 7:13 PM EDT | Severe Thunderstorm Warning | MRX | Hamblen, Jefferson | 32 min |
| Jun 5, 7:16 PM EDT | Severe Thunderstorm Warning | MRX | Sevier | 19 min |
| Jun 5, 7:26 PM EDT | Tornado Warning | MRX | Jefferson, Sevier | 19 min |
| Jun 5, 7:45 PM EDT | Severe Thunderstorm Warning | MRX | Cocke, Sevier | 40 min |
| Jun 5, 7:50 PM EDT | Severe Thunderstorm Warning | MRX | Greene, Hamblen, Hawkins | 35 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; the sounding from the Mesonet's radiosonde archive.