Alert archive / Tennessee / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 228, NWS Morristown, TN

July 25, 2004Bradley County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Jul 25, 2004, 7:14 PM EDT for Bradley County, Tennessee. It was in force for 31 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
Jul 25, 2004, 7:14 PM EDT (23:14 UTC)
Expired
Jul 25, 2004, 7:45 PM EDT
In force
31 min
Issued by
NWS Morristown, TN
Area
Counties, with a storm outline in the text

County Bradley County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.2 hours before the alert went out and 191 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 2004-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 433 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 2004-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.1939Sfc1 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
433 J/kg
Mixed-layer CIN
-119 J/kg
Mixed-layer LCL
914 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

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 Jul 25, 2:50 PM EDT, 4 hours 24 minutes earlier.

Area forecast discussion, Jul 25, 2:50 PM EDT, 4 hours 24 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
250 PM EDT SUN JUL 25 2004

.SHORT TERM (TONIGHT AND MONDAY)...NUMEROUS THUNDERSTORMS ARE
DEVELOPING/MOVING INTO THE AREA THIS AFTERNOON WITH A MOIST...
UNSTABLE AIR MASS IN PLACE.  THESE STORMS ARE INITIALIZING IN
ADVANCE OF A SLOWLY MOVING COLD FRONT APPROACHING THE REGION FROM
THE NORTHWEST.  THE STORMS WILL HAVE THE POTENTIAL TO BECOME QUITE
STRONG WITH HEAVY RAIN...HAIL AND GUSTY WINDS.  THEIR STRENGTH
SHOULD DIMINISH SOMEWHAT AROUND SUNSET BUT BELIEVE SCATTERED
CONVECTION WILL CONTINUE OVER THE AREA FOR MUCH OF THE NIGHT.  THE
STORMS ARE RATHER SLOW MOVING...PROVIDING THE POTENTIAL FOR SOME
ISOLATED FLASH FLOODING.  ANOTHER ROUND OF CONVECTION IS EXPECTED ON
MONDAY AS A SURFACE LOW PRESSURE AREA AND ITS ASSOCIATED FRONTAL
BOUNDARY MOVES ACROSS THE AREA.

.LONG TERM (MONDAY NIGHT THROUGH SUNDAY)...THE SURFACE LOW MOVES
NORTHEAST OF THE FORECAST AREA BY MONDAY NIGHT...WITH A CLOSED UPPER
LOW TRACKING ACROSS THE MID WEST HELPING TO PUSH A COLD FRONT ACROSS
THE TN RIVER VALLEY. WILL PLAN TO CONTINUE WITH LIKELY POPS MONDAY
NIGHT AS THE COLD FRONT MOVES THROUGH WITH GOOD DIVERGENCE ALOFT
PROVIDED BY THE UPPER LOW. WITH FRONTAL PASSAGE EXPECTED EARLY
TUESDAY MORNING...WILL GRADUALLY DIMINISH RAIN CHANCES FROM WEST TO
EAST THROUGH THE DAY. A RETURN TO MORE TRANQUIL CONDITIONS IS
EXPECTED FOR WEDNESDAY...WITH SLIGHTLY COOLER AND DRIER AIR BEHIND
THE FRONT. LATEST GFS MODEL RUN INDICATES THAT MOISTURE WILL BEGIN
TO INCREASE AGAIN FROM THE SOUTHEAST ON THURSDAY...WITH A SLIGHTLY
BETTER CHANCE FOR CONVECTION ON FRIDAY THROUGH SUNDAY...MAINLY
DURING THE AFTERNOON AND EVENING HOURS.
&&

.PRELIMINARY POINT TEMPS/POPS...
CHATTANOOGA, TN   72  84  71  86 /  60  70  60  40
KNOXVILLE, TN     69  83  69  82 /  60  70  60  50
BRISTOL, TN       66  81  68  80 /  60  70  60  50
OAK RIDGE, TN     68  81  69  82 /  60  70  60  40
&&

.MRX WATCHES/WARNINGS/ADVISORIES...
NC...NONE.
TN...NONE.
VA...NONE.
&&

MJB/DMG
Hazardous weather outlook, Jul 25, 12:30 PM EDT, 6 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATE
NATIONAL WEATHER SERVICE MORRISTOWN TN
1230 PM EDT SUN JUL 25 2004

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-005-
006-008-251000-
ANDERSON-BLEDSOE-BLOUNT SMOKY MTN-BRADLEY-CAMPBELL-CHEROKEE-
CLAIBORNE-CLAY-COCKE SMOKY MTN-EAST POLK-GRAINGER-HAMBLEN-HAMILTON-
HANCOCK-HAWKINS-JEFFERSON-JOHNSON-KNOX-LEE-LOUDON-MARION-MCMINN-
MEIGS-MORGAN-NORTH SEVIER-NORTHWEST CARTER-NORTHWEST COCKE-
NORTHWEST GREENE-NORTHWEST MONROE-NW BLOUNT-RHEA-ROANE-RUSSELL-
SCOTT TN-SCOTT VA-SEQUATCHIE-SEVIER SMOKY MTN-SOUTHEAST CARTER-
SOUTHEAST GREENE-SOUTHEAST MONROE-SULLIVAN-UNICOI-UNION-
WASHINGTON TN-WASHINGTON VA-WEST POLK-WISE-
1230 PM EDT (1230 PM CDT) SUN JUL 25 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST TENNESSEE...SOUTHWESTERN
VIRGINIA AND EXTREME SOUTHWESTERN NORTH CAROLINA.

.DAY ONE (TODAY AND TONIGHT)...

A TROUGH OF LOW PRESSURE WILL DEVELOP ACROSS THE TENNESSEE VALLEY
TODAY AND TONIGHT INCREASING THE COVERAGE OF SHOWERS AND
THUNDERSTORMS OVER THE REGION.  DUE TO INCREASING MOISTURE AND
INSTABILITY...SOME OF THE THESE STORMS MAY BECOME QUITE STRONG AND
BE CAPABLE OF PRODUCING TORRENTIAL RAINS...GUSTY WINDS...AND HAIL.
SINCE THE MOVEMENT OF THESE THUNDERSTORMS WILL BE SLOW...LOCALIZED
HEAVY RAINFALL IS POSSIBLE WHICH MAY PRODUCE FLASH FLOODING OF LOW
LYING AREAS...ROADWAYS...AND SMALL STREAMS.

.DAYS TWO THROUGH SEVEN (MONDAY THROUGH SATURDAY)...

A SLOW MOVING COLD FRONT WILL MOVE ACROSS THE TENNESSEE VALLEY
MONDAY AND TUESDAY CONTINUING THE CHANCE OF SHOWERS AND
THUNDERSTORMS.  SOME OF THESE STORMS WILL PRODUCE STRONG GUSTY
WINDS...HEAVY RAIN...AND POSSIBLY SMALL HAIL...BUT NO SEVERE WEATHER
IS ANTICIPATED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE TODAY AND TONIGHT DUE TO THE
POTENTIAL OF STRONG STORMS AND LOCALIZED FLASH FLOODING.

PLEASE STAY TUNED TO NOAA WEATHER RADIO OR VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/MRX.

DH/MJB

In the hours before

Local storm report, Jul 25, 5:05 PM EDT, 2 hours 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
505 PM EDT SUN JUL 25 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0440 PM     TSTM WND DMG     PIKEVILLE               35.61N 85.20W
07/25/2004                   BLEDSOE            TN   EMERGENCY MNGR

            SEVERAL TREES DOWN IN PIKEVILLE. NUMEROUS TREES DOWN
            COUNTYWIDE.

&&

GRC
Local storm report, Jul 25, 6:18 PM EDT, 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
618 PM EDT SUN JUL 25 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0540 PM     HAIL             WILDWOOD                35.80N 83.87W
07/25/2004  0.88 INCH        BLOUNT             TN   AMATEUR RADIO

            NICKEL SIZE HAIL IN WILDWOOD AREA. REPORTED BY SPOTTER.

0540 PM     TSTM WND DMG     SPRING CITY             35.69N 84.86W
07/25/2004                   RHEA               TN   LAW ENFORCEMENT

            SEVERAL TREES DOWN AND POWER OUTAGES IN SPRING CITY.

0545 PM     TSTM WND DMG     5 NE MARYVILLE          35.80N 83.91W
07/25/2004                   BLOUNT             TN   LAW ENFORCEMENT

            TREES DOWN ON WILDWOOD RD, MARTIN MILL PIKE, AND BAYS
            MOUNTAIN ROAD.

&&

MEP

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 4:26 PM EDTSevere Thunderstorm WarningMRXBledsoe, Sequatchie49 min
Jul 25, 5:09 PM EDTSevere Thunderstorm WarningMRXMeigs, Rhea51 min
Jul 25, 5:37 PM EDTSevere Thunderstorm WarningMRXBlount23 min
Jul 25, 6:34 PM EDTSevere Thunderstorm WarningMRXKnox26 min
Jul 25, 6:37 PM EDTSevere Thunderstorm WarningMRXGreene38 min
Jul 25, 6:52 PM EDTSevere Thunderstorm WarningMRXHawkins38 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 2004Every severe thunderstorm warning in 2004

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.