Area Forecast Discussion
Issued by NWS Green Bay, WI

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FXUS63 KGRB 132334

Area Forecast Discussion
National Weather Service Green Bay WI
634 PM CDT Tue Mar 13 2018

Updated aviation portion for 00Z TAF issuance

.SHORT TERM...Tonight and Wednesday
Issued at 251 PM CDT Tue Mar 13 2018

A short-wave trof was shifting south of the region this afternoon,
taking most of the snow shower activity with it. Lingering flurries
over the southeast half of the forecast area and the Lake Superior
snow belt are expected to end before sunset. Satellite showed
partial clearing occurring due to subsidence with the departing
short-wave and approaching surface high. This clearing trend will
continue into the early evening.

The surface high will move through the forecast area tonight, with
WAA developing on the back side of the ridge overnight. This will
cause some mid/high clouds to develop over the region. Tonight`s
low temperatures are expected as the ridge axis and associated
clear skies/light winds move through the area this evening and
into the early overnight hours, with a modest rebound occurring
late tonight due to WAA and increasing mid clouds.

A cold front is expected to move through the forecast area on
Wednesday, but it should come through dry. Mild air in advance of
the front, and mixing in association with the boundary, should
allow temperatures to warm into the upper 30s to middle 40s,
several degrees above normal.

.LONG TERM...Wednesday Night Through Tuesday
Issued at 251 PM CDT Tue Mar 13 2018

The area will remain under cyclonic flow Wednesday night and
Thursday as a trough remains over the western Great Lakes. This
will bring a chance for light snow showers and flurries, mainly
across the north, as another shortwave tracks through the region.

High pressure and a large scale ridge will then build in across
the region late in the week and into the weekend, providing dry
weather to northeast Wisconsin as temperatures warm to above
normal for this time of year.

By early next week a low pressure system passes to the south of
the region. Despite earlier forecasts, models have trended a bit
south with the recent run. Therefore there is increasing
confidence that dry weather could remain through early next week
as has been the trend the last few days of keeping low pressure
systems away from northeast Wisconsin as a large scale ridge
remains in place.

.AVIATION...for 00Z TAF Issuance
Issued at 634 PM CDT Tue Mar 13 2018

Some middle and high clouds will drift in from the northwest later
tonight, but the evening will start out clear. An approaching cold
front will produce some clouds with bases between 3000 and 4000 feet
Wednesday afternoon.



SHORT TERM.....Kieckbusch
LONG TERM......Kurimski
AVIATION.......RDM is the U.S. government's official web portal to all federal, state and local government web resources and services.