[BNAWX] Hazardous Weather Outlook

[EMWIN Server]

FLUS44 KOHX 021007
HWOOHX

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NASHVILLE TN
530 AM CST FRI DEC 2 2005

TNZ005>011-022>034-056>066-075-077>080-093>095-031130-
BEDFORD-BENTON-CANNON-CHEATHAM-CLAY-COFFEE-CUMBERLAND-DAVIDSON-
DEKALB-DICKSON-FENTRESS-GILES-GRUNDY-HICKMAN-HOUSTON-HUMPHREYS-
JACKSON-LAWRENCE-LEWIS-MACON-MARSHALL-MAURY-MONTGOMERY-OVERTON-PERRY-
PICKETT-PUTNAM-ROBERTSON-RUTHERFORD-SMITH-STEWART-SUMNER-TROUSDALE-
VAN BUREN-WARREN-WAYNE-WHITE-WILLIAMSON-WILSON-
530 AM CST FRI DEC 2 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDDLE TENNESSEE.

.DAY ONE...TODAY AND TONIGHT
A FAST MOVING UPPER LEVEL ZONAL FLOW PATTERN GETS UNDERWAY TODAY.
SHORT WAVES EMBEDDED IN THE FLOW WILL RACE EAST...BRINGING
QUICK CHANGES TO THE WEATHER IN MIDDLE TENNESSEE.

A RAPIDLY MOVING SURFACE LOW...WILL MOVE INTO THE SOUTHERN PLAINS
TONIGHT. CLOUDS WILL INCREASE...AND THERE IS A CHANCE FOR LIGHT
PRECIPITATION...MAINLY AFTER MIDNIGHT ACROSS MIDDLE TENNESSEE.
TEMPERATURE AND MOISTURE ADVECTION STRONGLY INCREASE AFTER
MIDNIGHT...WHILE SURFACE DEWPOINTS ARE RELUCTANT TO CHANGE.
ALSO...COMPUTER MODELS ARE SHOWING SATURATION AROUND FIVE
THOUSAND FEET...WITH EVAPORATIVE COOLING IN THE LAYER BELOW.
THEREFORE...THERE MAY BE A BRIEF PERIOD OF LIGHT SLEET AND SNOW
AT THE ONSET...BEFORE THE CHANGE OVER TO RAIN TOWARD DAYBREAK
SATURDAY. HOWEVER...ALONG THE CUMBERLAND PLATEAU...AND ESPECIALLY
THE NORTHERN END...WHERE SURFACE TEMPERATURES WILL BE IN THE
MID AND UPPER 20S TONIGHT...THEY COULD EXPERIENCE LIGHT FREEZING
RAIN AND SNOW AFTER MIDNIGHT. HOWEVER TEMPERATURES ARE EXPECTED
TO BEGIN RISING TOWARD DAYBREAK.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
ZONAL FLOW BECOMES EXCEPTIONALLY FAST ON SATURDAY...BUT GIVES WAY
TO AMPLIFICATION BY SUNDAY. A SERIES OF UPPER LEVEL IMPULSES
WILL MOVE EAST FROM THE SOUTHERN PLAINS ON SATURDAY...AND INTO
MIDDLE TENNESSEE BY SATURDAY EVENING. SHOWERS WILL BECOME LIKELY
DURING THE DAY SATURDAY...AS THE SOUTHERN PLAINS LOW HEADS THIS WAY.
A FEW THUNDERSTORMS ARE ALSO EXPECTED ON SATURDAY...AS A WARM FRONT
MOVES NORTH...TO ALONG THE THE KENTUCKY BORDER...BY MID DAY ON
SATURDAY. THE AIR MASS ACROSS MIDDLE TENNESSEE...DESTABILIZES QUICKLY
SATURDAY AFTERNOON AND EVENING...ESPECIALLY SOUTHERN MIDDLE TENNESSEE
WHERE A FEW STORMS COULD BECOME STRONG WITH GUSTY WINDS AND HAIL. THE
COLD FRONT WILL SWEEP ACROSS THE MID STATE SATURDAY NIGHT...BRINGING
AN END TO THE SHOWERS AND THUNDERSTORMS.

.SPOTTER ACTIVATION STATEMENT...
SPOTTERS AND EMERGENCY MANAGERS MAY BE ACTIVATED LATE SATURDAY
AFTERNOON AND EVENING. ALL INTERESTED PARTIES ARE ENCOURAGED TO
MONITOR FURTHER UPDATES ON THIS WEATHER SYSTEM.
$$
BOYD



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