FXUS63 KLBF 100917
AFDLBF
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
317 AM CST THU DEC 10 2009
.DISCUSSION...
TEMPERATURES WILL BE THE MAIN STORY FOR THE NEXT SEVERAL DAYS...AS A
GRADUAL RISE OUT OF THE DEEP FREEZE IS ANTICIPATED. BOTH 00Z RUNS OF
THE ECMWF AND GFS TRANSITION THE OVERALL UPPER FLOW TO MORE ZONAL BY
THIS WEEKEND...AND THIS WILL BRING MORE OF A PACIFIC AIRMASS EAST
INTO PLAINS...WITH THE ARCTIC AIR RETREATING INTO EASTERN CANADA.
THIS WILL BE A SLOW PROCESS...WITH TEMPERATURES ONLY RECOVERING INTO
THE TEENS TODAY...AND 20S FOR FRIDAY. LOWS WILL BE ONCE AGAIN BELOW
ZERO TONIGHT...WITH THE COLDEST READINGS /-10 TO -12F/ IN THE
FAVORED PLATTE AND OTHER RIVER VALLEYS. FRIDAY NIGHTS LOWS SHOULD
REMAIN IN THE SINGLE DIGITS ABOVE ZERO...WITH THE EXCEPTION AGAIN OF
THE FAVORED RIVER VALLEYS WHERE READING NEAR ZERO ARE EXPECTED.
TEMPERATURES WILL CONTINUE TO MODERATE THIS WEEKEND...WITH BOTH GFS
AND ECMWF H925 TEMPS SUPPORTING 40S ACROSS SOUTHWEST NEB ON BOTH
SATURDAY AND SUNDAY. OF COURSE WITH PLENTY OF SNOW COVER...AND
POTENTIAL THAT WE COULD RECYCLE SOME COLD ARCTIC AIR...WON/T GO THAT
WARM...BUT 30S SEEM REASONABLE SOUTHWEST AND 20S NORTHEAST.
SHORTWAVE SKIRTS THOUGH THE AREA IN THE ZONAL FLOW SUNDAY...AND WILL
CONTINUE TO KEEP SLIGHT CHANCE POPS FOR SNOW GOING FOR NOW...BUT
MEASURABLE PRECIP CHANCES ARE REALLY NOT LOOKING VERY GOOD. ANOTHER
ARCTIC FRONT DROPS INTO THE AREA MONDAY BEHIND DEPARTING
SHORTWAVE...BUT THIS APPEARS TO BE JUST A QUICK SHOT...AS RIDGING
TAKES HOLD MY MID TO LATE NEXT WEEK WITH TEMPS WARMING.
&&
.AVIATION...
CEILING AND VISIBILITY WILL BE VFR AND HIGHER IN CENTRAL AND WESTERN
NEBRASKA THROUGH AT LEAST FRIDAY MORNING. WIND WILL SWITCH AROUND TO
270-300 AT 12G22KT LATE THIS MORNING (16-18Z) AND DROP OFF AGAIN
TOWARD SUNSET (23-24Z). BY THEN...THE DIRECTION WILL BE
220-240...THOUGH IT WILL NOT COME AROUND TO THE SOUTHWEST BEFORE
21Z.
&&
.LBF WATCHES/WARNINGS/ADVISORIES...
WIND CHILL ADVISORY IN EFFECT UNTIL 16Z THURSDAY FOR
NEZ004>010-022>029-035>038-056>059-069>071-094.
&&
$$
DISCUSSION...TAYLOR
AVIATION...SPRINGER
