Alert archive / Tennessee / Flash Flood Warnings in 1998

Flash Flood Warning 88, NWS Morristown, TN

June 5, 1998Sevier County, Tennessee

NWS Morristown, TN issued this flash flood warning at Jun 5, 1998, 9:06 AM EDT for Sevier County, Tennessee. It was in force for 3 hr. 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, 9:06 AM EDT (13:06 UTC)
Expired
Jun 5, 1998, 11:55 AM EDT
In force
3 hr
Issued by
NWS Morristown, TN
Area
Whole counties

County Sevier County, TN

The radar

The Knoxville radar (KMRX), 44 km from the middle of the area, began a volume at 13:09 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 1.1 hours before the alert went out and 279 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, Nashville Metro, TN at 12:00Z on 1998-06-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Nashville Metro, TN at 12:00Z on 1998-06-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -146 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
552 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
-146 m²/s²
0-3 km storm-relative helicity
-71 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMRX 051307
FFWMRX
TNC155-051555-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
906 AM EDT FRI JUN 5 1998

THE NATIONAL WEATHER SERVICE IN KNOXVILLE/TRI-CITIES HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SEVIER COUNTY IN EASTERN TENNESSEE

* UNTIL 1155 AM EDT

* AT 904 AM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED THAT A LARGE AREA OF MODERATE TO HEAVY RAINFALL WAS
  LOCATED OVER SEVIER COUNTY... MOVING NORTHEAST AT 25 MPH.

  AT 9 AM...GATLINBURG FIRE DEPARTMENT REPORTED THAT AREA
  STREAMS WERE NEAR BANKFUL.  THE ADDITIONAL MODERATE TO LOCALLY
  HEAVY RAINS WILL LIKELY PRODUCE AREA STREAM FLOODING.

* EXCESSIVE RAINFALL AT THE RATE OF 2 INCHES PAST 3 HOURS WILL
  PRODUCE FLOODING ACROSS SEVIER COUNTY THROUGH 1155 AM EDT.

MOVE TO HIGHER GROUND IF FLOOD WATERS THREATEN.  REMEMBER...DO NOT
CROSS WATER COVERED ROADWAYS.  THE WATER DEPTH MAY BE TOO HIGH FOR
SAFE PASSAGE.

DH

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jun 5, 2:45 AM EDT, 6 hours 21 minutes earlier.

Area forecast discussion, Jun 5, 2:45 AM EDT, 6 hours 21 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.

In the hours before

Special weather statement, Jun 5, 7:54 AM EDT, 1 hour 12 minutes before
NCZ060-061-TNZ012>018-034>047-066>074-083>087-099>102-VAZ001-002-005-
006-008-052000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
754 AM EDT FRI JUN 5 1998

...SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS EAST TENNESSEE...SOUTHWEST
VIRGINIA AND SOUTHWEST NORTH CAROLINA THIS AFTERNOON AND THIS EVENING...

A STATIONARY FRONT REMAINS IN PLACE ACROSS NORTH CAROLINA AND TENNESSEE
THIS MORNING. A DISTURBANCE WILL MOVE ACROSS THE REGION IN THE UPPER
LEVELS OF THE ATMOSPHERE WHICH WILL ACTIVATE THE DEVELOPMENT OF
THUNDERSTORMS IN THE VICINITY OF THE FRONT THIS AFTERNOON AND EVENING.

DUE TO THE INSTABILITY...SOME OF THESE STORMS COULD BECOME SEVERE.
THE MAIN THREAT WILL BE FROM DAMAGING WINDS AND HAIL.

REMEMBER...A SEVERE THUNDERSTORM IS ANY STORM THAT PRODUCES HAIL 3/4
INCH (DIME-SIZE) OR LARGER...AND/OR WINDS OF 58 MPH OR HIGHER.

IN ADDITION TO THE THREAT FOR SEVERE THUNDERSTORMS...FLASH FLOODING
WILL ALSO BE POSSIBLE ACROSS EAST TENNESSEE DUE TO THE ALREADY SATURATED
GROUND FROM THE PAST SEVERAL DAYS HEAVY RAINS.

EMERGENCY MANAGEMENT OFFICIALS AND STORM SPOTTER GROUPS SHOULD
CONTINUE TO MONITOR THE WEATHER SITUATION TODAY AND TONIGHT...AND BE
PREPARED FOR POSSIBLE ACTIVATION.

STAY TUNED TO THIS STATION FOR FURTHER STATEMENTS FROM THE NATIONAL
WEATHER SERVICE.

TH
Special weather statement, Jun 5, 7:54 AM EDT, 1 hour 12 minutes before
NCZ060-061-TNZ012>018-034>047-066>074-083>087-099>102-VAZ001-002-005-
006-008-052000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
754 AM EDT FRI JUN 5 1998

...SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS EAST TENNESSEE...SOUTHWEST
VIRGINIA AND SOUTHWEST NORTH CAROLINA THIS AFTERNOON AND THIS EVENING...

A STATIONARY FRONT REMAINS IN PLACE ACROSS NORTH CAROLINA AND TENNESSEE
THIS MORNING. A DISTURBANCE WILL MOVE ACROSS THE REGION IN THE UPPER
LEVELS OF THE ATMOSPHERE WHICH WILL ACTIVATE THE DEVELOPMENT OF
THUNDERSTORMS IN THE VICINITY OF THE FRONT THIS AFTERNOON AND EVENING.

DUE TO THE INSTABILITY...SOME OF THESE STORMS COULD BECOME SEVERE.
THE MAIN THREAT WILL BE FROM DAMAGING WINDS AND HAIL.

REMEMBER...A SEVERE THUNDERSTORM IS ANY STORM THAT PRODUCES HAIL 3/4
INCH (DIME-SIZE) OR LARGER...AND/OR WINDS OF 58 MPH OR HIGHER.

IN ADDITION TO THE THREAT FOR SEVERE THUNDERSTORMS...FLASH FLOODING
WILL ALSO BE POSSIBLE ACROSS EAST TENNESSEE DUE TO THE ALREADY SATURATED
GROUND FROM THE PAST SEVERAL DAYS HEAVY RAINS.

EMERGENCY MANAGEMENT OFFICIALS AND STORM SPOTTER GROUPS SHOULD
CONTINUE TO MONITOR THE WEATHER SITUATION TODAY AND TONIGHT...AND BE
PREPARED FOR POSSIBLE ACTIVATION.

STAY TUNED TO THIS STATION FOR FURTHER STATEMENTS FROM THE NATIONAL
WEATHER SERVICE.

TH

The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 5, 5:23 AM EDTFlash Flood WarningMRXCumberland3 hr
Jun 5, 6:51 AM EDTSevere Thunderstorm WarningMRXHamilton49 min
Jun 5, 6:55 AM EDTSevere Thunderstorm WarningMRXHamilton45 min
Jun 5, 7:38 AM EDTFlash Flood WarningMRXBradley, Polk2 hr
Jun 5, 7:38 AM EDTFlash Flood WarningMRXHamilton2 hr
Jun 5, 6:26 PM EDTSevere Thunderstorm WarningMRXMonroe34 min
Jun 5, 6:50 PM EDTFlash Flood WarningMRXMonroe3 hr
Jun 5, 7:03 PM EDTSevere Thunderstorm WarningMRXKnox32 min
Jun 5, 7:08 PM EDTSevere Thunderstorm WarningMRXGrainger32 min
Jun 5, 7:11 PM EDTFlash Flood WarningMRXCumberland3 hr
Jun 5, 7:13 PM EDTSevere Thunderstorm WarningMRXHamblen, Jefferson32 min
Jun 5, 7:16 PM EDTSevere Thunderstorm WarningMRXSevier19 min
Jun 5, 7:26 PM EDTTornado WarningMRXJefferson, Sevier19 min
Jun 5, 7:45 PM EDTSevere Thunderstorm WarningMRXCocke, Sevier40 min
Jun 5, 7:50 PM EDTSevere Thunderstorm WarningMRXGreene, Hamblen, Hawkins35 min

Nearby

Flash Flood Warnings in Tennessee, 1998Every flash flood 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; radar from the NEXRAD Level II archive.