Severe Thunderstorm Warning 267, NWS Morristown, TN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
350 PM EDT WED AUG 17 2005

.SHORT TERM...(TONIGHT AND THURSDAY)...SKIES HAVE BEEN PARTLY TO
MOSTLY CLOUDY TODAY AS MOISTURE LINGERED WITH A STATIONARY FRONT
OVER THE TENNESSEE VALLEY. DAYTIME HEATING INITIATED SHOWERS AND
THUNDERSTORMS ON THE NORTHERN CUMBERLAND PLATEAU AND THEY ARE NOW
SPREADING INTO THE CENTRAL VALLEY. A FEW HAVE DEVELOPED IN SOUTHWEST
VIRGINIA...THE SMOKY MOUNTAINS AND IN SOUTHEAST TENNESSEE. HEAVY
RAINFALL WITH A FEW STORMS AND POSSIBLY ISOLATED DAMAGING WINDS WITH
STRONG STORMS UNTIL EARLY EVENING. WITH LOSS OF HEATING SHOWERS
SHOULD DECREASE BUT A SHORTWAVE TRACKING THROUGH KY OVERNIGHT SHOULD
AFFECT NORTHERN SECTIONS BY MORNING SO INCREASED CHANCES ALONG THE
PLATEAU AND IN SOUTHWEST VIRGINIA. BELIEVE GFS IS OVERDOING THE
STRENGTH OF THIS FEATURE THOUGH. THE SOUTHERN END OF THIS SHORTWAVE
SHOULD AFFECT THE WHOLE FORECAST AREA THURSDAY WITH SHOWERS AND
THUNDERSTORMS LIKELY NORTH AND ABOUT 50 PERCENT COVERAGE SOUTH. MORE
CLOUD COVER WILL KEEP HIGH TEMPERATURES COOLER...IN THE LOWER TO MID
80S.

.LONG TERM...(THU NIGHT THROUGH WED)...WITH WEAK BOUNDARY LINGERING
OVER THE REGION ALONG WITH CONSIDERABLE MOISTURE...WILL GO WITH 30
POPS SOUTH AND 50 NORTH CLOSER TO THE BOUNDARY ON FRIDAY.  WEAK
RIDGE BUILDING IN ALOFT AHEAD OF NEXT TROUGH...AND MAY SEE SOME
DRYING...SO JUST 20 POPS SAT.  COLD FRONT SHOULD PUSH THROUGH
SUNDAY...WITH CHANCE POPS...THEN HIGH PRESSURE BUILDS IN FROM THE
NORTH FOR MONDAY THROUGH WEDNESDAY ALONG WITH MUCH DRIER AIR. WILL
GO DRY FOR THE MON THROUGH WED PERIOD.  WILL NOT STRAY FAR FROM GFS
MOS TEMPS THIS RUN.

&&

.PRELIMINARY POINT TEMPS/POPS...
CHATTANOOGA AIRPORT, TN             72  87  73  93 /  40  50  30  20
KNOXVILLE MCGHEE TYSON AIRPORT, TN  71  84  71  91 /  40  50  40  30
OAK RIDGE, TN                       70  84  71  92 /  40  50  40  30
TRI CITIES AIRPORT, TN              67  83  66  87 /  30  60  50  30

&&

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

&&

TD/LDW

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MORRISTOWN TN
850 AM EDT WED AUG 17 2005

NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002-005-
006-008-181100-
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-
850 AM EDT (750 AM CDT) WED AUG 17 2005

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

.DAY ONE (TODAY AND TONIGHT)...

A NEARLY STATIONARY FRONT IN THE REGION WILL CAUSE SCATTERED SHOWERS
AND THUNDERSTORMS TO DEVELOP THIS AFTERNOON AND EVENING...WITH A FEW
THUNDERSTORMS POSSIBLY BECOMING STRONG TO SEVERE DURING THE LATE
AFTERNOON OR EARLY EVENING. THE MAIN THREATS WILL BE THE POSSIBILITY
OF STRONG DAMAGING WINDS...AND LOCALLY HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN (THURSDAY THROUGH TUESDAY)...

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE TO
DEVELOP THURSDAY AND FRIDAY AS THE FRONT LIFTS NORTH WITH DECREASING
CHANCES THIS WEEKEND. A FEW STORMS MAY BECOME SEVERE THROUGH
FRIDAY WITH A THREAT OF DAMAGING WINDS...LARGE HAIL AND LOCALLY HEAVY
RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND
EVENING AND POSSIBLY EACH DAY THROUGH FRIDAY.

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

TD