Alert archive / Tennessee / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 337, NWS Morristown, TN

June 10, 1998Hamilton County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jun 10, 1998, 2:34 PM EDT for Hamilton County, Tennessee. It was in force for 61 min. 2 reports 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 10, 1998, 2:34 PM EDT (18:34 UTC)
Expired
Jun 10, 1998, 3:35 PM EDT
In force
61 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Hamilton County, TN

What was reported inside it

TimeReportWhereRemark
Jun 10, 3:00 PM EDTThunderstorm WindSale Creek, TN
Jun 10, 3:15 PM EDTThunderstorm WindChattanooga, 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

Nashville Metro, TN (KBNA), launched 12:00Z, 6.6 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.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 1998-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3323 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 1998-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 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
3323 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
782 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
1.6
Supercell composite
8.0

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 Jun 10, 2:13 PM EDT, 21 minutes earlier.

Area forecast discussion, Jun 10, 2:13 PM EDT, 21 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
213 PM EDT WED JUN 10 1998

...MAIN CONCERNS FFW POTENTIAL..SVR POTENTIAL..PRECIP IN LATER
PERIODS..RECOMMEND FFW FOR ALL AREAS THIS EVENING AND OVERNIGHT...

...CORRECTED FFW PERIOD AS TSRA ALREADY FIRING IN KY...
..THANKS MEM FOR COORD. CALL...

HAVE GONE W/ THE ETA SOLUTION AS IT HAD THE BEST HANDLE ON THIS AFTNS
MCS OVER SW KY..N AND SE TN.  PRECIP AMNTS ARND 3 IN. IN AN HOUR
PRODUCING NUMEROUS REPORTS OF FLOODING ACROSS THE CWA.  CAPES ARND
4000 AND LIS ARND -10...K INDICES 45-50..AND PWS 1.5-2.0 INCHES.
HEAVY RAIN A DEFINITE POTENTIAL THIS EVENING.

RIDGE SFC AND ALOFT IS WEAK AND ALLOWING PRECIP TO MOVE SE ACRS CWA.
THICKNESS PATTERNS STAY NW THROUGH F36 HOURS SO ANYTHING THAT DEVELOPS
IN OK..KS..MO..IA..KY WILL MOVE INTO THE AREA AND SOME COULD PRODUCE
HEAVY RAIN AND SEVERE WEATHER.  UPPER LEVEL DIVERGENCE ONCE AGAIN
NOTICED ACROSS W TN AND MOST OF MO..TOWARDS 12Z THU MORNING.
ATMOSPHERE REMAINS UNSTABLE THROUGH F48...SURFACE WARM FRONT REMAINS
IN THE AREA FOR THE NEXT 24 HOURS...WITH LINGERING OUTFLOW
BOUNDARIES...POPS WARRENTED THROUGH FORECAST PERIOD.  WITH HIGH PWS
STAYING IN THE AREA...HEAVY RAIN POSSIBLE MOST AREAS THROUGH THE
EVENING UPDATE..WOULD LIKE TO GO WITH A FFW FOR THIS EVENING ALL
AREAS..AS THE PRECIP WILL MOVE OUT OF THE AREA WITH AN AREA OF
SUBSIDENCE BEHIND IT...THEN FIRE UP AGAIN AROUND 3 AM.

AFTER THESE SHOWERS/THUNDERSTORMS MOVE THROUGH THE AREA...SHOULD SEE A
BREAK AND HAVE REDEVELOPMENT AFTER MIDNIGHT.

RECOMMEND...
FOR CRW...MEM...RDU (ALL AREAS)...GO A CAT COOLER ON TEMPS IN MTNS.
..FLASH FLOOD WATCH THIS EVENING..

THIS EVENING...SHOWERS AND THUNDERSTORMS. HEAVY RAIN POSSIBLE. SOME
MAY BE SEVERE.
.TONIGHT...CLOUDY WITH A 40 PERCENT CHANCE FOR SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOW IN THE MID 60S. LIGHT AND VARIABLE
WIND.
.THURSDAY...CONTINUED CLOUDY AND MUGGY WITH A GOOD
CHANCE FOR THUNDERSOTRMS. HIGH AROUND 80. SOUTHWEST WIND 10 TO 15 MPH.
CHANCE FOR RAIN 50 PERCENT.
.THURSDAY NIGHT...CLOUDY WITH A CHANCE OF THUNDERSTORMS. LOW IN THE
MID 60S. CHANCE FOR RAIN 40 PERCENT.
.FRIDAY...BECOMING PARTLY CLOUDY WITH A CHANCE FOR THUNDERSTORMS. HIGH
IN THE LOWER 80S. CHANCE FOR RAIN 30 PERCENT.

THANKS...PDK

In the hours before

Local storm report, Jun 10, 8:40 AM EDT, 5 hours 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
840 AM EDT WED JUN 10 1998

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

250 AM     LEBANON                   VA   WIND DAMAGE
06/10/98   RUSSELL                        TREES REPORTED DOWN IN THE
                                          LEBANON AREA BY EMA

320 AM     IN GLADE SPRINGS          VA   0.75 INCH HAIL
06/10/98   WASHINGTON                     DIME SIZE HAIL REPORTED IN
                                          THE TOWN OF GLADE SPRINGS.
                                          REPORTED BY GLADE SPRINGS
                                          POLICE DEPARTMENT AND
                                          RECEIVED FROM THE SHERIFFS
                                          DISPATCH.

545 AM     LEBANON                   VA   WIND DAMAGE
06/10/98   RUSSELL                        NUMEROUS TREES DOWN IN
                                          LEBANON

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 2:43 AM EDTSevere Thunderstorm WarningMRXCampbell47 min
Jun 10, 3:44 AM EDTSevere Thunderstorm WarningMRXJohnson36 min
Jun 10, 11:25 AM EDTSevere Thunderstorm WarningMRXCumberland60 min
Jun 10, 11:54 AM EDTSevere Thunderstorm WarningMRXRhea46 min
Jun 10, 12:02 PM EDTFlash Flood WarningMRXCumberland3 hr
Jun 10, 12:27 PM EDTSevere Thunderstorm WarningMRXCumberland63 min
Jun 10, 12:33 PM EDTSevere Thunderstorm WarningMRXHamilton62 min
Jun 10, 12:52 PM EDTSevere Thunderstorm WarningMRXRoane48 min
Jun 10, 1:07 PM EDTSevere Thunderstorm WarningMRXBradley, Polk33 min
Jun 10, 1:11 PM EDTSevere Thunderstorm WarningMRXMeigs34 min
Jun 10, 1:18 PM EDTSevere Thunderstorm WarningMRXMonroe62 min
Jun 10, 1:24 PM EDTSevere Thunderstorm WarningMRXLoudon, McMinn66 min
Jun 10, 1:24 PM EDTSevere Thunderstorm WarningMRXRhea66 min
Jun 10, 1:33 PM EDTFlash Flood WarningMRXMorgan, Roane3 hr
Jun 10, 1:33 PM EDTFlash Flood WarningMRXMeigs, Rhea3 hr
Jun 10, 1:36 PM EDTSevere Thunderstorm WarningMRXBlount19 min
Jun 10, 1:38 PM EDTSevere Thunderstorm WarningMRXHamilton62 min
Jun 10, 1:40 PM EDTSevere Thunderstorm WarningMRXBradley65 min
Jun 10, 2:31 PM EDTTornado WarningMRXBradley64 min
Jun 10, 2:34 PM EDTSevere Thunderstorm WarningMRXPolk61 min
Jun 10, 2:46 PM EDTFlash Flood WarningMRXCumberland3 hr
Jun 10, 2:22 AM EDTSevere Thunderstorm WarningMRXRussell48 min
Jun 10, 2:56 AM EDTSevere Thunderstorm WarningMRXWashington49 min
Jun 10, 5:37 AM EDTSevere Thunderstorm WarningMRXRussell, Washington48 min
Jun 10, 9:19 AM EDTFlash Flood WarningMRXRussell, Washington3 hr
Jun 10, 1:00 PM EDTSevere Thunderstorm WarningMRXClay35 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.