Area Forecast Discussion
Issued by NWS Huntsville, AL

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000
FXUS64 KHUN 150251 AAB
AFDHUN

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE HUNTSVILLE AL
951 PM CDT SUN SEP 14 2014

.UPDATE...
SMALL ADJUSTMENTS TO TEMPS/DEW POINTS AND CLOUDS. ADDED PATCHY FOG
MAINLY TO A FEW EASTERN/CENTRAL LOCATIONS FOR LATE TONIGHT.

&&

.DISCUSSION...
HIGH PRESSURE REMAINS CENTERED IN THE OH VALLEY TONIGHT WITH
GENERALLY LIGHT NORTH FLOW ONGOING IN THE TN VALLEY. PATCHY THIN
CIRRUS HAS MOVED QUICKLY ACROSS THE AREA IN WRLY FLOW ALOFT...WHICH
WILL CONTINUE OVERNIGHT. TEMPERATURES HAVE FALLEN INTO THE LOW/MID
60S ALREADY IN SOME LOCATIONS IN MIDDLE TENN...WHILE TEMPS REMAIN IN
THE LOW 70S IN/NEAR THE LARGER URBAN AREAS AND CONCENTRATED IN NERN
PARTS OF AL.

AS A RIDGE OF HIGH PRESSURE SHIFTS TO THE EAST OF THE REGION
OVERNIGHT...FLOW IN THE LOW LEVELS WILL GRADUALLY VEER FROM THE SSW.
SHALLOW ISENTROPIC ASCENT WILL LIKELY LEAD TO SOME STRATUS
DEVELOPMENT OVER OUR EASTERN COUNTIES. VEERING FLOW WILL ALSO ADVECT
MOISTURE INTO THE AREA...CAUSING SFC DEW POINTS TO GRADUALLY RISE
LATER TONIGHT. OUTSIDE OF AREAS WITH LOW STRATUS IN THE EAST...PATCHY
FOG MAY DEVELOP LATER TONIGHT AS RADIATIONAL COOLING COMBINES WITH
NEAR SFC MOISTURE ADVECTION. FOG IS MOST LIKELY IN SOME
CENTRAL/EASTERN LOCATIONS...MAINLY IN CULLMAN COUNTY...AND FROM
MADISON/JACKSON INTO MIDDLE TENN. TEMPS WERE ADJUSTED BASED ON LATEST
TRENDS AND WITH THE EXPECTATION OF MOISTURE ADVECTION AND CLOUD
DEVELOPMENT PARTICULARLY IN THE EAST.

KDW

&&

.AVIATION...
/ISSUED 639 PM CDT SUN SEP 14 2014/
FOR 00Z TAFS...VFR CONDITIONS LIKELY AT KHSV/KMSL TERMINALS OVER THE
NEXT 24 HOURS. SFC WINDS WILL VEER FROM N TO E OVERNIGHT...BUT WILL
LIKELY REMAIN AOB 5 KTS. WINDS WILL SHIFT TO WRLY AFTER ~15Z. PATCHY
LGT FOG IS POSSIBLE IN NRN AL LATE TONIGHT...BUT NO MENTION IN TAFS
FOR NOW DUE TO EXPECTED LIMITED COVERAGE.

KDW

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...NONE.
TN...NONE.
&&

$$

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


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