Area Forecast Discussion
Issued by NWS Aberdeen, SD

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000
FXUS63 KABR 281934
AFDABR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ABERDEEN SD
234 PM CDT MON JUL 28 2014

.SHORT TERM...TONIGHT THROUGH WEDNESDAY NIGHT

THE CURRENT POSITIVE PNA PATTERN IS EXPECTED TO CONTINUE THROUGH
THE SHORT RANGE...WITH ONLY SLIGHT HEIGHT RISES THROUGH THE
PERIOD. WITH A LACK OF ANY DECENT WAA...TEMPERATURES WILL CONTINUE
A SLOW RISE THROUGH THE WEEK. AS FOR PCPN...CHANCES STILL LOOK
PRETTY MARGINAL. ALTHOUGH THAT SAID FORECAST SOUNDINGS FOR BOTH
TUESDAY AND WEDNESDAY DO SHOW STEEP SFC/MID LEVEL LAPSE RATES WITH
SOME DIABATICALLY DRIVEN CLOUDS DEVELOPING EACH AFTERNOON.
WEDNESDAY ALSO BRINGS ABOUT A WEE BIT MORE SFC BASED CAPE SO WOULD
NOT BE TOO SURPRISED TO SEE A WEAK SHOWER/SPKLS WITHIN WEAK SHEAR
AXIS ALOFT AS DEPICTED BY THE ECMWF/GFS. OVERALL THOUGH NOT ENOUGH
OF A THREAT OF MEASURABLE TO INCLUDE IN THE FORECAST AT THIS
POINT.

.LONG TERM...THURSDAY THROUGH MONDAY

SURFACE HIGH PRESSURE ALONG WITH NORTHWEST FLOW ALOFT WILL BRING
DRY CONDITIONS THROUGH A MAJORITY OF THE LONG TERM PORTION OF THE
FORECAST. TEMPERATURES THROUGH THE PERIOD WILL HOVER WITHIN A FEW
DEGREES AROUND NORMAL. THE GFS IS SHOWING A FAIRLY STRONG COLD
FRONT SLIDING ACROSS THE REGION ON SUNDAY AND SUNDAY NIGHT WITH
THUNDERSTORMS POSSIBLE. THE ECMWF IS MUCH WEAKER WITH THE FRONTAL
PASSAGE WITH LITTLE TO NO CONVECTIVE POTENTIAL. THE ALLBLEND GUIDANCE
SHOWS SCHC TO LOW END CHC POPS ON SUNDAY WHICH LOOKS REASONABLE AT
THIS TIME.

&&

.AVIATION...
18Z TAFS FOR THE KABR...KATY...KPIR AND KMBG TERMINALS

PREVAILING VFR CONDITIONS ARE EXPECTED FOR ALL TERMINALS THROUGH
THE VALID TAF PERIOD. SCT-BKN STRATUS CLOUDS WILL DRIFT ACROSS THE
TERMINALS THROUGH THIS EVENING BEFORE DISSIPATING UPON SUNSET.

&&

.ABR WATCHES/WARNINGS/ADVISORIES...
SD...NONE.
MN...NONE.
&&

$$
SHORT TERM...TDK
LONG TERM...SD
AVIATION...SD

WEATHER.GOV/ABERDEEN






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