National Weather Service Weather Forecast Office

Area Forecast Discussion

276
FXUS64 KMRX 210521
AFDMRX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MORRISTOWN TN
121 AM EDT TUE MAY 21 2013

.AVIATION...
MAIN CONCERN WILL BE THE DEVELOPING FOG..ESPECIALLY AT TRI..WHERE
VLIFR/LIFR CONDITIONS DUE TO VISIBILITY RESTRICTIONS ARE ANTICIPATED.
FOG WILL DISSIPATE BY 14Z..THEN NEXT CONCERN WILL BE THE POTENTIAL OF
AFTERNOON/EARLY EVENING THUNDERSTORMS AT CHA AND TYS. EVEN THOUGH
UPPER RIDGE WILL REMAIN...SEVERE CONVECTION NEARING THE MISSISSIPPI RIVER
WILL SEND OUT AN OUTFLOW BOUNDARY ACROSS THE TENNESSEE VALLEY TODAY.

THIS BOUNDARY ALONG WITH LOCAL TERRAIN FEATURES WILL PRODUCE
THUNDERSTORMS NEAR THE CHA/TYS TERMINALS BETWEEN 19-23Z. WINDS WILL
BE SOUTH TO SOUTHWEST DURING THE DAY TODAY BETWEEN 8-14KTS..EXCEPT
IN/NEAR STORMS.

&&

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

&&

$$