Area Forecast Discussion
Issued by NWS Green Bay, WI

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
FXUS63 KGRB 280946

Area Forecast Discussion
National Weather Service Green Bay WI
346 AM CST Mon Nov 28 2016

Forecast discussion for routine morning forecast issuance

.SHORT TERM...Today...Tonight...and Tuesday
Issued at 346 AM CST Mon Nov 28 2016

First round of rain moved through the area overnight
and brought a quarter to half inch of rain to most places. The
upper jet that helped produce the rain will exit the region around
daybreak and expect a break in the rain for the most part until
later this afternoon when a second strong upper jet approaches
from the south. This should produce convective showers during the
late afternoon and evening and perhaps a few thunderstorms south
of highway 10. The rain should end from south to north late
tonight as upper forcing departs. Some clearing expected Tuesday.

Highs today and Tuesday will be 10 or more degrees above normal.
Lows tonight will be around 20 degrees above normal.

.LONG TERM...Tuesday Night Through Sunday
Issued at 346 AM CST Mon Nov 28 2016

Precip trends as occluded low pressure moves across the western
Great Lakes is the main forecast concern.  Will continue to lean on
the ecmwf based upon comparisons to the ensemble means.

Tuesday night thru Wednesday night...A rather deep occluded low will
slowly slide east across the region during this period.  Deep
moisture beneath this low will initially reside from northern Iowa
to north-central Wisconsin on Tuesday evening, so will include only
a slight chance of rain and snow in the forecast.  This deeper
moisture will finally shift east with the movement of the low on
Wednesday, bringing a chance of rain and snow to north-central WI,
and a chance of light rain elsewhere. Deep cyclonic flow and
slightly colder air will persist across the region on Wednesday
night, with rain and snow showers continuing.

Rest of the forecast...Though low pressure will be moving east of
region on Thursday, strong cyclonic flow does not relent, and
therefore should see occasional rain and snow showers.  Some precip
may linger over north-central and far northeast Wisconsin into
Thursday night, but guidance point towards mid-level moisture
departing, which should end the precip potential over central and
east-central WI. Despite precip ending, low clouds look slow to
depart thanks to thermal troughing and low level cyclonic flow on
Friday and possibly into Saturday as well. The next shortwave trough
looks to arrive on Sunday and will bring the next chance of light

.AVIATION...for 06Z TAF Issuance
Issued at 1036 PM CST Sun Nov 27 2016

Widespread IFR conditions with scattered LIFR cigs
will continue overnight into Monday as periods of rain spread
over the state. Gusty surface winds from the southeast will
linger over Eastern Wisconsin through Monday.



AVIATION.......TDH is the U.S. government's official web portal to all federal, state and local government web resources and services.