Area Forecast Discussion
Issued by NWS Huntsville, AL

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592
FXUS64 KHUN 091743 AAC
AFDHUN

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
1143 AM CST TUE FEB 9 2016

.UPDATE...
FOR 18Z TAFS

&&

.DISCUSSION...
/ISSUED 1042 AM CST TUE FEB 9 2016/
A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM FOR
FRANKLIN...MOORE...AND LINCOLN COUNTIES IN TN...AS WELL AS JACKSON
AND DEKALB COUNTIES UNTIL 6 PM. THIS IS COURTESY OF PIECES OF ENERGY
ROTATING AROUND AN AREA OF LOW PRESSURE OVER THE GREAT LAKES REGION.

VERY STEEP LAPSE RATES AND ABUNDANT MOISTURE BETWEEN 850 MB AND 700
MB ARE PRODUCING MUCH OF THE LIGHT TO MODERATE SNOWFALL THAT HAS
FALLEN ACROSS NORTHERN ALABAMA AND SOUTHERN MIDDLE TN. SOME HEAVIER
BANDS ALSO DEVELOPED THIS MORNING IN HIGHER ELEVATIONS EAST OF I-65
AND NEAR THE TENNESSEE RIVER. LUCKILY THE WIND DIRECTION HAS BECOME
MORE NORTHWEST AS THE FIRST PIECE OF ENERGY ALOFT IS CURRENTLY
PUSHING INTO NE AL. THIS WILL SHIFT MOST OF THE SNOWFALL INTO THOSE
AREAS FOR THE REMAINDER OF THE MORNING INTO THE EARLY AFTERNOON
HOURS. MESOSCALE MODELS ALSO SHOW THE DEEPER MOISTURE PUSHING EAST
AS THIS OCCURS. THIS WILL LIKELY ALLOW FOR A FEW CLEARING PATCHES TO
DEVELOP IN CLOUD COVER. SO...WE EXPECT THE CLOUD COVER TO BECOME
BRIEFLY PARTLY CLOUDY BETWEEN NOON AND 3 PM IN CULLMAN AND THE EDGES
OF NW ALABAMA TOWARD NOON. THIS WILL ALLOW TEMPERATURES TO CLIMB
ABOVE FREEZING SOMETIME AROUND NOON IN MANY LOCATIONS. THE EXCEPTIONS
BEING SOUTHERN MIDDLE TN AND NE AL....DUE TO CONTINUED LIGHT UPSLOPE
FLOW AND MORE PERSISTENT CLOUD COVER.

ALL MESOSCALE MODELS SHOW ANOTHER PIECE OF ENERGY ROTATING THROUGH
NORTHERN AL LATE THIS AFTERNOON. AT THIS POINT...ONLY AN ADDITIONAL
DUSTING TO AS MUCH AS A HALF INCH IS EXPECTED IN THE VALLEYS. MOST
LOCATIONS HAVE RECEIVED AROUND ONE HALF AN INCH OR LESS OF SNOWFALL
ACCUMULATION SO FAR...BUT SOME MELTING AND COMPACTION OF SNOW HAS
TAKEN PLACE AND WILL CONTINUE. THE EXCEPTION BEING NORTHEASTERN
AL...NORTHERN MORGAN COUNTY...AND HIGHER ELEVATIONS EAST OF
I-65...WHERE 1 TO 2 INCHES FELL AND PERHAPS AN ADDITIONAL ONE HALF TO
ONE INCH WILL FALL LATER TODAY. SO THE ADVISORY LOOKS ON TRACK SO
FAR. TWEAKED HIGH TEMPERATURES TO REFLECT DECREASING CLOUD COVER
TRENDS.

THE SNOWFALL IS STILL EXPECTED TO QUICKLY DIMINISH IN COVERAGE AND
INTENSITY THIS EVENING.

KTW

&&

.AVIATION...
FOR 18Z TAFS...LIGHT SNOW SHOWERS WILL CONTINUE TO AFFECT NORTHERN
ALABAMA TAF SITES KHSV/KMSL THOUGH ABOUT 01-03Z. ALTHOUGH SHSN
ACTIVITY HAS DECREASED IN COVERAGE/INTENSITY LATE THIS MORNING...SOME
ENHANCEMENT TO BOTH THE COVERAGE AND INTENSITY IS EXPECTED THIS
AFTERNOON. PERIODIC BURSTS OF BRIEF MDT SHSN MAY CAUSE VIS/CEILING
REDUCTIONS TO MVFR CATEGORY. ALTHOUGH NOT MENTIONED IN THE OFFICIAL
TAFS...IFR VIS IS POSSIBLE IN STRONGER SHSN...BUT SHOULD BE ISOLATED
AND BRIEF SO WILL NOT MENTION IN TAFS AT THIS TIME. SHSN ACTIVITY IS
LIKELY TO QUICKLY DIMINISH AFTER 01-03Z WITH PREVAILING MVFR CEILINGS
(MDT CONFIDENCE IN CEILINGS) THRU ABOUT 06-08Z...FOLLOWING BY VFR.

KDW

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR ALZ009-010.

TN...WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR TNZ076-096-
     097.

&&

$$

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE
AT WEATHER.GOV/HUNTSVILLE.



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