183
FXUS63 KGRB 040405
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
1105 PM CDT Tue Jun 3 2025

Updated aviation portion for 06Z TAF issuance

.KEY MESSAGES...

- Wildfire smoke will lead to poor air quality at times into Wednesday.
  An Air Quality Advisory is in effect across the entire area
  through noon Wednesday.

- Conditions hazardous conditions for small craft and dangerous
  swimming conditions through the early overnight hours.

- There are chances of thunderstorms at times Friday through
  Monday. It is too early to determine if any of the storms would
  become severe.

&&

.DISCUSSION...
Issued at 329 PM CDT Tue Jun 3 2025

Three rounds of rain are expected to move across the area through
late tonight. The first round of rain is moving across the area
this afternoon. Some of the stronger thunderstorms were producing
gust winds of 30 to 50 mph, small hail and brief heavy rain. This
band has produced 0.75 to 1.25 inches of rain across central WI.
This first band of showers should move to the northeast of the
area by late afternoon. This first band should exit to the
northeast of the area by late afternoon. This first band should
wipe out much of the instability from daytime heating this
afternoon. The second round of showers and a few thunderstorms
will move into the area on the heels of the first band late
this afternoon or early this evening. Finally, the third round of
rain will only impact far eastern Wisconsin late this evening and
overnight.

As the front drifts eastward this evening, low clouds and
fog/smoke are expected. An Air Quality Advisory is in effect until
noon Wednesday, and possibly could be extended Wednesday morning.
Low humidity values return Wednesday afternoon and Thursday
afternoon as high pressure dominates the pattern.

An unsettled pattern is anticipated Friday through Monday. Did
include thunder each afternoon and early evening due to daytime
heating on Friday and Saturday. A more widespread rainfall is
expected Sunday as a cold front brings another round of showers
and storms. It is possible some of the storms on Friday and
Saturday could produce small hail, but not confident to add it
to the Hazardous Weather Outlook. It still certain if any of the
storms on Sunday would become severe. Temperatures will be at or
below normal through the weekend.

&&

.AVIATION...for 06Z TAF Issuance
Issued at 1104 PM CDT Tue Jun 3 2025

Lingering area of rain (minimal thunder) slides across early in
the overnight. Otherwise, areas of smoke will shift across the
state into Wednesday morning. The surface smoke (MVFR to at times
IFR visibility) will then slowly diminish from northwest to
southeast from midday through late afternoon on Wednesday. Besides
the smoke, IFR-MVFR cigs over east-central WI will lift to VFR
toward daybreak. Otherwise, cigs through the TAF period will be
VFR. After some early gustiness in wake of the cold front
overnight, expect light northwest winds through the period.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Beach Hazards Statement until 1 AM CDT Wednesday for WIZ022-040-
050.
&&

$$

DISCUSSION.....Eckberg
AVIATION.......JLA