Regional Weather Summary
Issued by NWS
AWUS83 KMKX 200954
WISCONSIN WEATHER SUMMARY
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
454 AM CDT TUE SEP 20 2016
Mostly cloudy skies and scattered showers were observed across
northwest Wisconsin in the morning. Mostly sunny skies were seen
As the day progressed, clouds and showers moved into central
sections of the state, while skies continued to be mostly sunny
in southeast Wisconsin. Skies became mostly sunny across northwest
Wisconsin by midday. More humid conditions were observed in
southern Wisconsin in the afternoon.
Thunderstorms developed by mid-afternoon, ahead of a
southeastward moving cold front. Some severe storms developed in
the late afternoon and evening hours, and moved rapidly
southeast across southern Wisconsin. Large hail fell in the
Madison area. The storms weakened and moved southeast of the
state in the early evening hours.
High temperatures Monday were above normal once again. They ranged
from the upper 60s in far northeast Wisconsin, to the upper 80s in
far southern Wisconsin.
Lingering moisture, from the showers and thunderstorms from
Monday afternoon, combined with light winds to bring dense fog to
portions of central and southern Wisconsin. Dense Fog Advisories
were in effect for these areas into the middle morning hours on
The rest of the state saw patchy fog. Temperatures so far ranged
from the lower to mid 40s across northern Wisconsin, to the 50s
across southern Wisconsin.
High pressure over the region is expected to slide eastward today.
Dense fog early this morning will dissipate by middle morning,
with partly to mostly sunny skies expected into the afternoon.
Another warm day is expected, with highs in the mid 70s in
northern Wisconsin, to around 80 in southern Wisconsin, with lower
80s in northern Illinois.
A stationary front is expected to remain near the Minnesota and
Iowa border into central Wisconsin tonight into Thursday night.
Low level winds pushing warm and moist air into northeast Iowa and
southeast Minnesota may bring an area of showers and thunderstorms
into southwest Wisconsin later tonight.
Chances for showers and storms are forecast across the rest of
the region. Lows in the mid to upper 50s are forecast for
northern Wisconsin, with upper 50s to mid 60s in southern
Wisconsin and northern Illinois.
Showers and thunderstorms are forecast Wednesday into Wednesday
night across central Wisconsin, with heavy rainfall possible.
Showers and storms are likely across northern Wisconsin as well,
with chances lingering across southern Wisconsin and northern
Illinois. Warm and humid conditions are expected.
Chances for showers and thunderstorms will remain Thursday into
Friday across the region, as the stationary front lingers. The
best chances will be in central Wisconsin once again.