681 
FXUS63 KLBF 210938
AFDLBF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
330 AM CST WED JAN 21 2004

...FORECAST FOCUS IS TEMPERATURES THEN SNOW CHANCE AND ARCTIC
OUTBREAK IN THE EXTENDED PERIOD...

.SHORT TERM...TODAY THROUGH SATURDAY...COLD FRONT LOCATED OVER THE
NORTHERN PLAINS WILL SLIDE SOUTH ACROSS THE AREA THIS EVENING
BRINGING A COLD CANADIAN HIGH BEHIND IT. GREATEST EFFECT OF COLD HIGH
WILL BE ACROSS THE NORTHEAST HOWEVER TEMPERATURES NOT EXPECTED TO BE
AS COLD AS WHAT WAS REACHED EARLIER THIS WEEK. BY FRIDAY WARM AIR
ADVECTION RETREATS COLD POOL TOWARD THE EAST...RESULTING IN
TEMPERATURES WELL ABOVE NORMAL (40S AND 50S). FOR SATURDAY ONLY
A SLIGHT COOL DOWN FROM FRIDAY.

.LONG TERM...SUNDAY THROUGH TUESDAY...LATEST MODEL RUN HAS TRENDED
SIGNIFICANTLY COLDER. COLD FRONT TO PUSH THROUGH THE AREA SOMETIME
ON SUNDAY. HIGHS ON SUNDAY COULD BE EARLY IN THE DAY WITH
TEMPERATURES FALLING IN THE AFTERNOON...WILL HAVE TO WATCH TIMING OF
FRONT. LOW AND MID LEVEL MOISTURE AVAILABLE WITH FRONTAL PASSAGE
AND EXPECT SOME SNOW TO DEVELOP THEN CONTINUE ITS WAKE...WAY TO
EARLY TO PIN POINT ACCUMULATION AMOUNTS BUT TEMPERATURES WILL BE
SIGNIFICANTLY ALTERED BY SNOW PACK. BEHIND THE COLD FRONT THE ARCTIC
BLAST HAS 850MB TEMPS BELOW -20C...WHICH CORRESPONDS WITH GUIDANCE
TUESDAY MORNING BELOW ZERO ACROSS THE CWA. HAVE NOT JUMPED ON THIS
COLDEST SCENARIO YET...ALTHOUGH HAVE TRENDED TEMPERATURES DOWNWARD
AND WILL WAIT TO SEE SOME IF THERE BECOMES CONSISTENCY WITH THIS
ARCTIC OUTBREAK.

&&

.LBF WATCHES/WARNINGS/ADVISORIES...NONE

&&

$$

MASEK