Area Forecast Discussion
Issued by NWS Goodland, KS

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000
FXUS63 KGLD 280307
AFDGLD

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GOODLAND KS
907 PM MDT SUN JUL 27 2014

.UPDATE...
ISSUED AT 905 PM MDT SUN JUL 27 2014

INCREASED RAINFALL CHANCES FOR THE SOUTHWEST PART OF THE AREA
WHERE ELEVATED INSTABILITY IS NOT CAPPED. LOOKS LIKE THE
INSTABILITY WILL ONLY LAST UNTIL MIDNIGHT OR SO THEN STABILIZE.

&&

.SHORT TERM...(THIS AFTERNOON THROUGH MONDAY)
ISSUED AT 212 PM MDT SUN JUL 27 2014

EARLY AFTERNOON WV IMAGERY AND RAP UPPER LEVEL ANALYSIS SHOW RIDGE
CENTERED NEAR THE TX PANHANDLE EXTENDING FROM THE CANADIAN ROCKIES
TO THE SOUTHERN MISSISSIPPI VALLEY. AT THE SURFACE HIGH PRESSURE IS
IN PLACE ROM THE NORTHERN PLAINS INTO WESTERN KS...WITH A STATIONARY
FRONT ALONG THE FRONT RANGE AND ACROSS THE TX PANHANDLE.

THIS FRONT ALONG WITH HIGHER TERRAIN IN COLORADO WILL BE THE MAIN
FOCUS FOR THUNDERSTORM ACTIVITY THIS AFTERNOON THROUGH MONDAY. WITH
THE FRONT EXPECTED TO REMAIN WELL SOUTH AND WEST ...IM SKEPTICAL WE
ARE GOING TO SEE ANY SHOWERS/THUNDERSTORMS IN OUR CWA. IF WE DO IT
WOULD BE IN OUR SW LATE THIS AFTERNOON/EVENING WHERE THERE IS SOME
INSTABILITY IN PLACE...HOWEVER THIS THREAT WILL LIKELY BE DIURNAL
WITH NO OTHER LARGE SCALE FORCING IN PLACE LOCALLY. BY MIDDAY MONDAY
THE FRONT BEGINS TO LIFT NORTH WHICH WOULD RESULT IN INCREASING
SHOWER/THUNDERSTORM CHANCES IN THE WEST-SOUTHWEST...WHICH COULD ALSO
LIMIT DAYTIME HEATING. I TRENDED POPS BACK A LITTLE THROUGH TONIGHT
AND LIMITED THEM TO THE SOUTHWEST. I KEPT 20/30 POPS IN PLACE MONDAY
AFTERNOON AND TRENDED HIGHS DOWN A LITTLE IN THE SOUTHWESTERN CWA.
BETTER QPF/PRECIP SIGNAL IS LATER MONDAY AFTERNOON AND REALLY MONDAY
NIGHT...SO THERE MIGHT NOT BE TOO MUCH OF AN IMPACT ON TEMPS. HIGHS
MONDAY SHOULD BE SEASONAL WITH VALUES IN THE UPPER 80S ACROSS MUCH
OF THE CWA...WHILE LOCATIONS WITH THICKER CLOUD COVER (OR
PRECIPITATION) MAY BE CLOSER TO THE LOW-MID 80S. NOT VERY FAR OFF
FROM  TODAY.

.LONG TERM...(MONDAY NIGHT THROUGH SUNDAY)
ISSUED AT 240 PM MDT SUN JUL 27 2014

MONDAY NIGHT-WEDNESDAY...NEAR TERM MODELS REMAIN IN REASONABLE
AGREEMENT WITH RESPECT TO THE LARGE SCALE PATTERN THROUGH THE START
OF THE WEEK. CWA WILL REMAIN ON NORTHEAST SIDE OF LARGE H5 RIDGE
WITH SEVERAL LOW AMPLITUDE DISTURBANCES MOVING THROUGH THE AREA.
COOLER TEMPERATURES AND SEVERAL PERIODS OF PRECIPITATION ARE
EXPECTED THROUGH THE PERIOD. OVERALL...BEST CHANCES FOR SIGNIFICANT
PRECIPITATION CONTINUE TO BE ON TUESDAY EVENING AS STRONG SHORT WAVE
TROUGH MOVES THROUGH PORTION OF RIDGE AXIS AND INTO THE CWA. LOOKS
LIKE PROFILES ARE ALL FAIRLY MOIST THROUGHOUT THE SOUNDINGS SO DO
NOT ANTICIPATE MOISTURE ADVECTION BEING A LIMITING FACTOR ON PRECIP
THREAT. DO HAVE SOME CONCERNS WITH RESPECT TO PRECIP PLACEMENT WITH
RESPECT TO SOME LOWER LEVEL TEMP ADVECT REGIMES....BUT GIVEN THE
OVERALL SUBTLE NATURE OF THE FORCING AMONGST THE LARGE SCALE RIDGE
AND ROLE INSTABILITY WILL PLAY IN DEVELOPMENT...DO NOT FEEL THIS
PATTERN IS ONE WHERE STRAYING GREATLY FROM CONSENSUS DATA IS
WARRANTED. SOME POTENTIAL FOR HEAVY RAIN WITH PWATS IN EXCESS OF 1.5
AND PERSISTENT DEFORMATION ZONE AROUND H7 ACROSS SOUTHERN CWA.

IN THE EXTENDED(WED NIGHT-SUNDAY)...COOLER PATTERN WILL CONTINUE
THROUGH THE PERIOD WITH PRECIP CHANCES WANING AS THE WEEK GOES ON
DUE TO PERSISTENT NORTHERLY FLOW. A LARGE RANGE IN EXPECTED
TEMPERATURE VALUES BETWEEN THE GFS AND ECMWF WITH THE LATTER BEING
SEVERAL DEGREES COOLER. WITH GEFS MEAN SLP INDICATING SFC HIGH
PRESSURE DOMINATING THE PATTERN...AM LEANING TOWARDS COOLER OUTPUT.

&&

.AVIATION...(FOR THE 00Z TAFS THROUGH 00Z MONDAY EVENING)
ISSUED AT 520 PM MDT SUN JUL 27 2014

VFR CONDITIONS FORECAST FOR THE 0Z TAFS. LIGHT WINDS WILL PERSIST
THROUGH MID MORNING AS A SURFACE HIGH PRESSURE OVER THE NORTHERN
PLAINS CONTINUES TO BUILD SOUTH INTO KANSAS. WINDS WILL BECOME
BREEZY DURING THE LATE MORNING THROUGH THE AFTERNOON FOR KGLD
WHERE THE SURFACE PRESSURE GRADIENT WILL BE TIGHTER. ANY STORMS
THAT DEVELOP DURING THE AFTERNOON WILL REMAIN SOUTHWEST OF KGLD.


&&

.GLD WATCHES/WARNINGS/ADVISORIES...
KS...NONE.
CO...NONE.
NE...NONE.
&&

$$

UPDATE...JTL
SHORT TERM...DR
LONG TERM...JRM
AVIATION...JTL






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