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

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000 FXUS64 KMRX 210521 AFDMRX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 121 AM EDT TUE MAY 21 2013 .AVIATION...
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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.
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&& .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$

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