FXUS63 KGRB 220539
AFDGRB

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
1139 PM CST MON DEC 21 2009

.UPDATE...BIG TEMP CONTRAST OVER STATE AS HIGH PRESSURE WITH
ASSOCIATED DRY AIR MASS WORKS IN. SKIES CLEARING THIS EVENING
AND LIGHT WINDS ALLOWED TEMPS OVER PORTIONS OF CENTRAL WI TO DROP
IN THE NEGATIVE SINGLE DIGITS. MID/HIGH CLOUDS FROM SYSTEM TO OUR
SOUTH MAKING SOME PROGRESS NORTH...THUS THINK NOSE DIVE NEAR END.
FAR NORTH CENTRAL SEEING SOME LAKE CLOUDS HOLDING TEMPS UP THERE.
MADE TWO ADJUSTMENTS TO TEMPS THIS EVENING TO ACCOUNT FOR THIS.

WILL LET MID SHIFT RE-ISSUE SPS AS NEEDED. INITIAL LOOK AT TONIGHTS
MODEL RUNS FAIRLY SIMILAR TO PREVIOUS RUN WITH SURFACE FEATURE
WITH MIX BAG IN THE EAST...AND LONG DURATION EVENT.

.AVIATION...DRY AIR WORKING IN FROM NORTH HAS BROUGHT VFR
CONDITIONS TO MUCH OF NORTHEAST WI...FEW LAKE CLOUDS LINGER NORTH.
WINDS TO SHIFT TO EAST AFTER MIDNIGHT LEADING TO LOWER CIGS MOVING
IN OFF LAKE MI BY MID TUE MORN...ESPECIALLY OVER EAST CENTRAL WI.

TE
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$