Area Forecast Discussion
Issued by NWS Birmingham, AL

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000
FXUS64 KBMX 230451
AFDBMX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1151 PM CDT TUE APR 22 2014

.UPDATE...
FOR 06Z AVIATION.

&&

.DISCUSSION...

A COLD FRONT WAS MOVING SLOWLY ACROSS CENTRAL ALABAMA THIS
EVENING. PRESSURES WERE RISING AT BHM/TCL/EET/ANB...SO IT APPEARS
THE FRONT HAS PASSED INTERSTATE 20. THE PROBLEM IS THAT THE
SURFACE DEW POINTS REMAIN IN THE 60S FOR SEVERAL COUNTIES BEHIND
THE FRONT. THEREFORE...HAVE SLOWED DOWN THE DRY AIR FILTERING
IN/DEW POINT CURVE AND THE TEMPERATURE DROP/TEMP CURVE. MANY
AREAS RECEIVED LIGHT RAIN JUST AHEAD OF THE FRONT. THIS WILL
PROMOTE FOG FORMATION. WENT AHEAD AND ADDED MENTION OF SOME DENSE
FOG WITH VISIBILITIES BELOW 1 MILE AT TIMES...MAINLY NEAR AND
SOUTH OF INTERSTATE 20.

DRIER AIR WILL FILTER INTO THE AREA OVERNIGHT. THIS SHOULD LEAD
TO SLOW IMPROVE NORTH TO SOUTH...BUT THE DRIER AIR WILL NOT MAKE
IT SOUTH OF INTERSTATE 85 HIGHWAY 80. THESE SOUTHERN AREAS WILL
EXPERIENCE IMPROVEMENT TIL AFTER SUNRISE. WILL MONITOR CONDITIONS
CLOSELY THE NEXT SEVERAL HOURS FOR A POSSIBLE DENSE FOG ADVISORY.
EITHER WAY...IF YOUR TRAVELING...BE PREPARED FOR SUDDEN REDUCTIONS
IN VISIBILITIES DUE TO FOG OVERNIGHT.

75

&&

.AVIATION...
06Z TAF DISCUSSION.

SKIES HAVE CLEARED THIS EVENING...ALLOWING FOG TO FORM AT SEVERAL
SITES SUCH AS KTOI...KASN...AND KTCL. WITH A WEAK FRONT IN THE
VICINITY...IT IS UNLIKELY THAT THE FOG WILL BE ABLE TO DISSIPATE
BEFORE DAYBREAK AT THOSE SITES. KBHM SHOULD AVOID THE FOG AS IS
OFTEN THE CASE. RICHER MOISTURE ACROSS THE SOUTH MAY CAUSE
CONDITIONS TO DETERIORATE BEFORE DAYBREAK AT KMGM. VFR CONDITIONS
WILL RETURN SHORTLY AFTER SUNRISE AT ALL SITES.

NOTE...THE NATIONAL WEATHER SERVICE IS NOW ISSUING SEASONAL
TERMINAL FORECASTS FOR THE TALLADEGA MUNICIPAL AIRPORT (KASN) IN
TALLADEGA...ALABAMA. THE FORECASTS WILL BE ISSUED THROUGH AT LEAST
MAY 8TH 00Z. DUE TO THE LIMITED AVAILABILITY OF OBSERVATIONS...
KASN TAF WILL HAVE AMD NOT SKED APPENDED TO THE END OF THE
FORECAST.

87/GRANTHAM

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

$$

75/87





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