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

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000 FXUS64 KMRX 011918 AFDMRX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MORRISTOWN TN 315 PM EDT MON SEP 1 2014 .SHORT TERM (TONIGHT AND TUESDAY)...
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ATMOSPHERE A BIT CAPPED OFF THIS AFTERNOON WITH A SUPPRESSED APPEARANCE NOTED IN SATELLITE IMAGERY. IT APPEARS STORMS ARE FIRING ON THE TERRAIN BUT WEAKEN LACKING OROGRAPHIC SUPPORT IN THE VALLEY. STAYED WITH ISOLATED PROBABILITY INTO THE EVENING MOST SPOTS AS SOME OF THE STORMS DRIFT INTO THE VALLEY BEFORE WEAKENING. PERHAPS A LITTLE BETTER CHANCE FOR A SHOWER OR THUNDERSTORM ON TUESDAY AS NORTH CENTRAL AMERICA UPPER TROUGHING CONTINUES TO GRADUALLY WORK ITS WAY EAST ACROSS THE UPPER MIDWEST. AS THIS OCCURS A WEAK COOL FRONTAL BOUNDARY WILL DROP SOUTH INTO THE NORTHERN REACHES OF THE FORECAST AREA ENHANCING CONVECTIVE POTENTIAL MAINLY NORTH OF I-40. STAYED VERY NEAR GUIDANCE BLEND FOR MINS/MAXES. .LONG TERM (TUESDAY NIGHT THROUGH MONDAY)...WEAK RIDGING ALOFT WILL BE THE DOMINANT FEATURE THROUGH THE PERIOD. THE WARMTH ASSOCIATED WITH THE RIDGE WILL WORK UPON LOW LEVEL MOISTURE THAT WILL REMAIN IN PLACE...TO PROMOTE DIURNAL CONVECTION EACH DAY. BUT A WEAK FRONTAL PASSAGE EARLY THIS COMING WEEKEND WILL PROBABLY BRING A BIT BETTER COVERAGE OF CONVECTION AROUND SATURDAY.
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&& .PRELIMINARY POINT TEMPS/POPS...
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CHATTANOOGA AIRPORT, TN 72 92 71 93 / 20 30 20 30 KNOXVILLE MCGHEE TYSON AIRPORT, TN 70 90 69 90 / 10 40 30 30 OAK RIDGE, TN 71 89 69 91 / 20 40 30 30 TRI CITIES AIRPORT, TN 67 88 64 88 / 10 50 40 30
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&& .MRX WATCHES/WARNINGS/ADVISORIES... NC...NONE. TN...NONE. VA...NONE. && $$

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