Alert archive / Tennessee / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 15, NWS Morristown, TN

May 8, 2004Sullivan County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at May 8, 2004, 8:01 PM EDT for Sullivan County, Tennessee. 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
May 8, 2004, 8:01 PM EDT (00:01 UTC)
Expired
May 8, 2004, 8:30 PM EDT
In force
29 min
Issued by
NWS Morristown, TN
Area
Counties, with a storm outline in the text

County Sullivan County, TN

The radar

The Knoxville radar (KMRX), 106 km from the middle of the area, began a volume at 00:01 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.0 hours before the alert went out and 221 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, Greensboro/Hi Pt, NC at 00:00Z on 2004-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1276 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, Greensboro/Hi Pt, NC at 00:00Z on 2004-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 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
1276 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
873 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
119 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 May 8, 3:18 PM EDT, 4 hours 43 minutes earlier.

Area forecast discussion, May 8, 3:18 PM EDT, 4 hours 43 minutes before
.SHORT TERM (TONIGHT THROUGH MONDAY NIGHT)...WIND SHIFT AND DP BOUNDARY
WILL CONTINUE ALONG OR JUST EAST OF NC/TN STATE LINE THROUGH SUNDAY.
THIS WILL ALLOW FOR SOME LOW LEVEL MOISTURE CONVERGENCE THAT WILL BE
ENHANCED BY AFTN OROGRAPHIC LIFT SO ISOLD AFTN/EVE TSTMS REMAIN
POSSIBLE. OTHERWISE TEMPS REMAIN ABOVE NORMAL FAVORING COOLER NGM
MINS AND COOLER MAV MAXS. RIDGE ALOFT WEAKENS SOME AS WEAK UPR
TROUGH DRIFTS NE REMAINING ON WEST SIDE OF MS RVR THROUGH MON.
THIS WILL INCREASE CLOUDS SOME AS LAYER MOISTENS IN SW FLOW.
TRIGGERS LACKING MONDAY SO LOW CONFIDENCE IN SLGT CHC POPS FOR
CUMBERLAND PLATEAU AND MNTS.

.LONG TERM (TUESDAY THROUGH SATURDAY)...GFS CONTINUING TO ADVERTISE
WEAK SHORTWAVES ROTATING THROUGH THE REGION INTO THURSDAY...ALONG
WITH DECENT INSTABILITY.  MOISTURE HAS INCREASED A BIT FROM EARLIER
RUNS...BUT STILL THINKING IT WILL BE DIURNAL ACTIVITY AND WILL KEEP
ONLY SLIGHT CHANCE POPS INTO THURSDAY.  WELL DEFINED COLD FRONT
STILL APPROACHING ON LATE FRIDAY...BRINGING DEEPER MOISTURE WITH
IT.  WILL KEEP 30 POPS ON LATE FRIDAY...AND FRIDAY NIGHT.  FRONT
PASSES CWA ON SATURDAY...BEST CHANCES WILL BE SATURDAY MORNING...BUT
STILL SOME ISOLATED ACTIVITY IN THE AFTERNOON AS THE UPPER TROUGH
PASSES.

&&

.PRELIMINARY POINT TEMPS/POPS...
CHATTANOOGA, TN   61  88  61  85 /   0   0  10  10
KNOXVILLE, TN   62  87  61  84 /  10   0  10  10
BRISTOL, TN   56  85  55  84 /  10   0  10  10
OAK RIDGE, TN   60  86  60  83 /  10   0  10  10
&&

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

SON/GH
Hazardous weather outlook, May 8, 4:55 AM EDT, 15 hours 6 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
455 AM EDT SAT MAY 8 2004

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-005-
006-008-090900-
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-
455 AM EDT (355 AM CDT) SAT MAY 8 2004

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

.DAY ONE (TODAY AND TONIGHT)...

HIGH PRESSURE WILL PERSIST ACROSS THE REGION AND PROVIDE WARM
TEMPERATURES...AND MAINLY DRY WEATHER.  NO HAZARDOUS WEATHER IS
EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN (SUNDAY THROUGH FRIDAY)...

THE AREA OF HIGH PRESSURE WILL WEAKEN ALONG WITH A SLIGHT INCREASE
IN MOISTURE...LEADING TO AT LEAST A SLIGHT CHANCE OF AFTERNOON AND
EVENING THUNDERSTORMS.  THE BEST CHANCES FOR SIGNIFICANT RAINS MAY
OCCUR ON THURSDAY NIGHT INTO FRIDAY.

HOWEVER...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

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

TG

In the hours before

Local storm report, May 8, 5:48 PM EDT, 2 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
548 PM EDT SAT MAY 08 2004

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

0540 PM     HAIL             1 S BANNER HILL         36.11N 82.41W
05/08/2004  0.75 INCH        UNICOI             TN   LAW ENFORCEMENT

            DIME SIZE HAIL NEAR BANNER HILL. REPORTED BY SHERIFFS
            OFFICE.

&&

MEP

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 3:48 PM EDTSevere Thunderstorm WarningMRXMonroe42 min
May 9, 4:45 PM EDTSevere Thunderstorm WarningMRXPolk45 min
May 9, 6:46 PM EDTSevere Thunderstorm WarningMRXScott44 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; radar from the NEXRAD Level II archive.