National Weather Service Text Product Display

Area Forecast Discussion
Issued by NWS Knoxville/Tri Cities, TN

Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

-- Highlight Changed Discussion --

-- Discussion containing changed information from previous version are highlighted. --
000
FXUS64 KMRX 180152 AAB
AFDMRX

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE MORRISTOWN TN
952 PM EDT FRI MAY 17 2013

.DISCUSSION...
-- Changed Discussion --THE LATEST OBS INDICATE SOME ELEVATED INSTABILITY ACROSS THE
REGION...WHICH HAS ALLOWED A FEW CLUSTERS OF THUNDERSTORMS TO
LINGER PAST SUNSET INTO THE MID/LATE EVENING HOURS. HOWEVER...AS
NIGHT SETTLES IN...THINK THAT MOST OF THE THUNDERSTORM ACTIVITY
WILL WANE WITH THE LOSS OF HEATING. HOWEVER...A BROAD AREA OF LIGHT
TO LOCALLY HEAVIER SHOWERS WILL CONTINUE TO WORK ITS WAY INTO THE
FORECAST AREA OVERNIGHT AS AN UPPER-TROUGH MOVES ACROSS THE
SOUTHERN APPALACHIANS. THE BEST CHANCES FOR PRECIPITATION WILL BE
ACROSS THE CUMBERLAND PLATEAU AND SOUTHEAST TENNESSEE AND
EVENTUALLY SPREAD INTO THE CENTRAL/NORTHERN VALLEY AND SOUTHWEST
VIRGINIA LATER TONIGHT. HAVE WENT AHEAD AND GONE DEFINITE POPS ACROSS
THE WESTERN/SOUTHERN THIRD OF THE REGION...BUT HAVE KEPT LIKELY TO
HIGH END CHANCE POPS ELSEWHERE...GIVEN THAT THE HEAVIER
PRECIPITATION GENERALLY SHOULD IMPACT THE WESTERN/SOUTHERN ZONES
BEFORE DAYBREAK.-- End Changed Discussion --

.PRELIMINARY POINT TEMPS/POPS...
-- Changed Discussion --CHATTANOOGA AIRPORT, TN 80 62 78 63 81 / 50 90 80 60 50
KNOXVILLE MCGHEE TYSON AIRPORT, TN 80 61 78 62 80 / 50 70 80 60 60
OAK RIDGE, TN 80 62 78 63 80 / 50 80 80 60 60
TRI CITIES AIRPORT, TN 79 58 76 59 77 / 50 50 80 60 60-- End Changed Discussion --

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

AMP

National Weather Service National Headquarters