Alert archive / North Carolina / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 62, NWS Morristown, TN

April 3, 1998Clay County, North Carolina

NWS Morristown, TN issued this severe thunderstorm warning at Apr 3, 1998, 8:16 PM EST for Clay County, North Carolina. It was in force for 29 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
Apr 3, 1998, 8:16 PM EST (01:16 UTC)
Expired
Apr 3, 1998, 8:45 PM EST
In force
29 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Clay County, NC

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 3, 6:00 PM ESTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.3 hours before the alert went out and 200 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.

Skew-T log-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 1998-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2522 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 1998-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 270 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2522 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
530 m above ground
0-6 km bulk shear
151 kt
0-1 km storm-relative helicity
270 m²/s²
0-3 km storm-relative helicity
676 m²/s²
Significant tornado parameter
0.0
Supercell composite
34.9

Open this sounding in Storm Lab

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, 5 hours 51 minutes earlier.

Area forecast discussion, Apr 3, 2:25 PM EST, 5 hours 51 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.

IssuedProductOfficeCountiesLasted
Apr 3, 7:10 PM ESTSevere Thunderstorm WarningMRXBradley, McMinn, Monroe, Polk65 min
Apr 3, 7:13 PM ESTSevere Thunderstorm WarningMRXMeigs, Rhea32 min
Apr 3, 7:15 PM ESTSevere Thunderstorm WarningMRXHamilton30 min
Apr 3, 7:20 PM ESTSevere Thunderstorm WarningMRXJohnson25 min
Apr 3, 7:38 PM ESTSevere Thunderstorm WarningMRXCarter52 min
Apr 3, 7:35 PM ESTSevere Thunderstorm WarningMRXCherokee55 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 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.