Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 52, NWS Morristown, TN

April 3, 1998Washington County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Apr 3, 1998, 6:45 PM EST for Washington County, Tennessee. It was in force for 60 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, 6:45 PM EST (23:45 UTC)
Expired: Apr 3, 1998, 7:45 PM EST
In force: 60 min
Issued by: NWS Morristown, TN
Area: Whole counties

County Washington County, TN

What was reported inside it

Time	Report	Where	Remark
Apr 3, 6:45 PM EST	Hail 1	Gray, 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 12:00Z, 11.8 hours before the alert went out and 234 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2424 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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, 4 hours 20 minutes earlier.

Area forecast discussion, Apr 3, 2:25 PM EST, 4 hours 20 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, 4:02 PM EST	Severe Thunderstorm Warning	MRX	Morgan, Roane	28 min
Apr 3, 4:16 PM EST	Tornado Warning	MRX	Meigs, Rhea	44 min
Apr 3, 4:17 PM EST	Severe Thunderstorm Warning	MRX	Anderson	43 min
Apr 3, 4:45 PM EST	Severe Thunderstorm Warning	MRX	Knox, Union	45 min
Apr 3, 5:00 PM EST	Tornado Warning	MRX	Bradley, Hamilton	45 min
Apr 3, 5:08 PM EST	Severe Thunderstorm Warning	MRX	Claiborne, Grainger	67 min
Apr 3, 5:37 PM EST	Severe Thunderstorm Warning	MRX	Hamblen, Hancock, Hawkins	53 min
Apr 3, 5:37 PM EST	Severe Thunderstorm Warning	MRX	Blount, Knox	38 min
Apr 3, 5:46 PM EST	Severe Thunderstorm Warning	MRX	Fentress	44 min
Apr 3, 5:47 PM EST	Tornado Warning	MRX	Blount, Knox	28 min
Apr 3, 5:52 PM EST	Tornado Warning	MRX	Fentress	53 min
Apr 3, 5:55 PM EST	Tornado Warning	MRX	Sevier	35 min
Apr 3, 5:56 PM EST	Severe Thunderstorm Warning	MRX	Monroe	34 min
Apr 3, 6:08 PM EST	Tornado Warning	MRX	Jefferson	37 min
Apr 3, 6:08 PM EST	Tornado Warning	MRX	Cumberland	52 min
Apr 3, 6:23 PM EST	Tornado Warning	MRX	Hamilton, Meigs, Rhea	52 min
Apr 3, 6:25 PM EST	Severe Thunderstorm Warning	MRX	Cocke, Greene	65 min
Apr 3, 6:25 PM EST	Severe Thunderstorm Warning	MRX	Sullivan	65 min
Apr 3, 6:31 PM EST	Severe Thunderstorm Warning	MRX	Scott	44 min
Apr 3, 6:31 PM EST	Tornado Warning	MRX	Cocke	29 min
Apr 3, 6:35 PM EST	Severe Thunderstorm Warning	MRX	McMinn	40 min
Apr 3, 6:47 PM EST	Severe Thunderstorm Warning	MRX	Morgan, Roane	58 min
Apr 3, 6:47 PM EST	Severe Thunderstorm Warning	MRX	Campbell	58 min
Apr 3, 6:49 PM EST	Severe Thunderstorm Warning	MRX	Cumberland	26 min
Apr 3, 6:39 PM EST	Severe Thunderstorm Warning	MRX	Scott, Washington	66 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1998 Every 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.