FXUS63 KLBF 260853 CCA
AFDLBF
AREA FORECAST DISCUSSION...CORRECTED TYPO
NATIONAL WEATHER SERVICE NORTH PLATTE NE
253 AM CST SAT DEC 26 2009
.DISCUSSION...
MASSIVE STORM AFFECTING MUCH OF THE UNITED STATES AND SOUTHERN
CANADA THIS MORNING. HAND ANALYSIS SHOWS THE H7 INFLUENCE FROM
BOSTON TO BOISE...SOME 2000 MILES. CLOSER TO HOME...THE CENTER OF
THIS MASSIVE SYSTEM IS OVER IOWA. PIECES OF ENERGY CONTINUE ROTATING
AROUND THE CENTER THROUGH NEBRASKA. AS THESE WAVES MOVE THROUGH...WE
HAVE PERIODS OF SNOW...AND WHEN COMBINED WITH THE WIND THE VSBY GOES
DOWN TO 1/2 OR EVEN STILL A 1/4 OF A MILE AT TIMES IN FALLING AND
BLOWING SNOW. WILL CONTINUE THE HEADLINES AS ARE...AND RIGHT NOW ALL
SET TO EXPIRE AT NOON. TOYED WITH THE IDEA OF DOWNGRADING THE
BLIZZARD WARNING...BUT FEEL IT SHOULD BE KEPT DUE TO WINDS STILL
GUSTING TO 50 MPH...AND REPORTS OF 2 TO 3 FOOT DRIFTS THROUGH
LINCOLN COUNTY...AND 6 FOOT PLUS DRIFTS FURTHER NORTH. MANY ROADS
NORTH OF THE I-80 CORRIDOR LIKELY TO HAVE SOME MAJOR DRIFTING ISSUES
THIS MORNING...AND WILL TAKE AWHILE TO GET THEM CLEAR. ALSO...SOME
ADDITIONAL WRAP AROUND SNOW IS LIKELY YET TODAY...WITH LESS THAN AN
INCH SOUTH...TO NEAR AN INCH OR SO IN THE NORTH. VSBY COULD STILL BE
REDUCED GREATLY IN OPEN COUNTRY INSIDE ANY SNOW BANDS DUE TO THE
BLOWING SNOW AND FALLING SNOW COMBINATION. GUIDANCE DOES SHOW THE
WIND DIMINISHING AFTER NOON...BUT SOME GUSTS TO 35 MPH WILL CONTINUE
THROUGH THE LATE AFTERNOON. DAY SHIFT CAN EVALUATE IF A WINTER
WEATHER ADVISORY IS NEEDED AFTER THE CURRENT WARNINGS AND ADVISORIES
EXPIRE AT NOON.
AS FOR TEMPERATURES...ARCTIC AIR WILL CONTINUE TO BE DRAWN SOUTH
TODAY...WITH HIGHS RANGING FROM THE TEENS NORTH TO LOWER 20S SOUTH.
TOMORROW AND MONDAY...WILL BEGIN TO WARM A FEW DEGREES AND TOUCH 30
SOUTHWEST...AND 20S NORTH. SIMILAR TEMPS FOR TUESDAY AND WEDNESDAY
BEFORE ANOTHER ARCTIC BLAST JUST IN TIME FOR NEW YEARS. DESPITE THE
COLD AIR TOWARD THE END OF NEXT WEEK...RIGHT NOW SEE NO SIGNALS FOR
ANY MAJOR SNOW EVENTS...AND THE GOING DRY FORECAST LOOKS GOOD.
&&
.AVIATION...
SHORT RANGE FORECAST SIMULATIONS SHOW SNOW TAPERING OFF IN THE
NORTHWEST SANDHILLS (INCLUDING VALENTINE) LATE THIS MORNING...BUT
BLOWING AND DRIFTING SNOW WILL CONTINUE TO RESTRICT VISIBILITY.
ANOTHER SHOT OF SNOW IS INDICATED DURING THE AFTERNOON IN NORTHERN
NEBRASKA. SO...VISIBILITY WILL BE AT LEAST INTERMITTENTLY BELOW THE
INSTRUMENT THRESHOLD THROUGH LATE AFTERNOON IN VALENTINE WITH
MARGINAL TO INSTRUMENT CEILINGS LIKELY. IN THE SOUTHWEST (INCLUDING
NORTH PLATTE)...SOME LIGHT SNOW MAY SPREAD IN FROM THE SOUTHWEST AS
THE CYCLONE STARTS MAKING ITS WAY EAST-NORTHEASTWARD OUT OF WESTERN
IOWA. HOWEVER...THE PROBABILITY DROPS OFF TO LESS THAN 20 PERCENT BY
15Z. ALTHOUGH WIND WILL BEGIN TO DECREASE THIS MORNING...IT IS
LIKELY TO CONTINUE 20-25G30-35KT THROUGH AT LEAST EARLY AFTERNOON.
IT IS NOT LIKELY TO DECREASE TO LESS THAN 15G25KT UNTIL AFTER
21Z.
&&
.LBF WATCHES/WARNINGS/ADVISORIES...
WINTER WEATHER ADVISORY UNTIL NOON CST /11 AM MST/ SATURDAY FOR
NEZ022-056-058-069>071.
BLIZZARD WARNING UNTIL NOON CST /11 AM MST/ SATURDAY FOR
NEZ005>010-023>029-035>038-057-059-094.
WINTER STORM WARNING UNTIL 11 AM MST SATURDAY FOR NEZ004.
&&
$$
DISCUSSION...TAYLOR
AVIATION...SPRINGER
