459
FXUS63 KGRB 150735
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
235 AM CDT Mon Jun 15 2026

.KEY MESSAGES...

- 30-50% chance for non-severe storms across northern Wisconsin
  late this afternoon and evening, but brief gusty winds are
  possible.

- Additional showers and storms (60-90% chance) Tuesday and
  again later Wednesday into Wednesday night. Chances for
  organized severe weather remain low, but a few strong storms
  with small hail, gusty winds and heavy rainfall may occur.

- Below average temperatures in the 60s and 70s through the
  week.

&&

.DISCUSSION...
Issued at 235 AM CDT Mon Jun 15 2026

Today-Tonight:

Isolated to scattered storms (30-50% chance) may develop across
northern Wisconsin within a modestly unstable and seasonably dry
environment this afternoon/evening. Overall, the environment is not
supportive of organized severe weather, but steepening low-level
lapse rates with diurnal heating within a dry boundary layer may
support gusty outflow winds with any storms before stabilization
occurs during the evening.


Tuesday-Wednesday:

Two prominent shortwave troughs will impact the area through mid-
week. The first will move through on Tuesday. Again, boundary layer
heating beneath seasonably cold (

NWS GRB Office Area Forecast Discussion