Area Forecast Discussion
Issued by NWS Green Bay, WI

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042
FXUS63 KGRB 261943
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
243 PM CDT Wed Jul 26 2017

Forecast discussion for routine afternoon forecast issuance

.SHORT TERM...Tonight and Thursday
Issued at 241 PM CDT Wed Jul 26 2017

A cold front will bring showers and scattered thunderstorms to
central and east central Wisconsin during the late afternoon and
early evening hours. Abundant cloud cover held temperatures down today
and has limited instability. Therefore, the severe thunderstorm threat
is very small.

Clouds will clear from northwest to southeast tonight as drier air
arrives behind the front. Wet ground from recent rains may produce
some ground fog in places later tonight, though increasing northeast
winds in the boundary layer should limit dense fog to the usual
foggy places. Lows will be close to normal for this time of year.

Thursday will start out sunny, but clouds will increase as an
upper trough approaches in the afternoon. Looks like a good set up
for scattered showers, especially in central and northcentral
Wisconsin. A temperature inversion around 700mb will probably
prevent thunderstorms, though they are not out of the question.

.LONG TERM...Thursday Night Through Wednesday
Issued at 241 PM CDT Wed Jul 26 2017

The active weather pattern will make it`s exit late Thursday night
as high pressure moves into the region for most of the weekend.
Dry and mostly sunny conditions are expected across the area
Friday and well into Sunday. A weak boundary coupled with an upper
level disturbance will bring the next chance for rain and isolated
thunderstorms into the region Sunday night into Monday morning.

A more active period then kicks off again as northwesterly flow
returns next week. A few rounds of showers and thunderstorms will
then be likely through the midweek.

Temperatures through the period will remain seasonal and fairly
steady before potentially dropping a few degrees next week behind
a cold front.
&&

.AVIATION...for 18Z TAF Issuance
Issued at 106 PM CDT Wed Jul 26 2017

A cold front will produce showers and MVFR ceilings as it moves
slowly south across the region this afternoon. Otherwise, mainly
middle and high clouds are expected.

When the front reaches east central Wisconsin late this afternoon,
there is a small chance that a line of thunderstorms could form
south of a Green Bay to Appleton to Waupaca line. If they do they
would effect Oshkosh and Manitowoc as they move south.

The front will exit the entire area this evening with clearing
skies expected. Dense ground fog could form over areas that have
received significant rainfall. It would dissipate by 14z
Thursday.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Beach Hazards Statement until 7 PM CDT this evening for WIZ022-
040-050.
&&

$$

SHORT TERM.....RDM
LONG TERM......Uhlmann
AVIATION.......RDM



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