Watches, Warnings & Advisories



2 products issued by NWS for: 5 Miles SSE Ashton IL

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
925 PM CST Thu Dec 4 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-060330-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
925 PM CST Thu Dec 4 2025 /1025 PM EST Thu Dec 4 2025/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Excessive Cold Risk.
  Limited Freezing Fog Risk mainly east of I-55.

DISCUSSION...

Pockets of locally dense freezing fog may develop tonight,
primarily east of about I-55 which may lead to slippery
conditions.

Wind chills 10 below to 15 below zero are expected tonight into
early Friday morning.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday morning...
  Limited Excessive Cold Risk.
Early Saturday morning...
  Limited Snow or Ice accumulation Risk.
Sunday through Wednesday...
  Limited Snow Risk.

DISCUSSION...

Clipper systems parading across the broad region may deliver
periodic opportunities for snow and travel impacts in our local
area.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

$$



Hydrologic Outlook

Hydrologic Outlook
ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111-141-
197-201-INC007-073-089-111-127-051800-

Hydrologic Outlook
National Weather Service Chicago IL
209 PM CST Thu Dec 4 2025

...Risks for River Ice Formation and Isolated Ice Jams will continue
the next Few Days...

Very cold temperatures tonight will be favorable for additional ice
on rivers and tributaries. Reports from river ice spotters and river
gauges indicate that isolated areas of heavy river ice coverage have
already developed. While not likely, ice jams will be possible in
isolated areas along the Rock, Fox, Des Plaines, and Kankakee
rivers. Ice jams may cause rises on area rivers with little warning.

Despite warmer temperatures expected by this weekend, widespread
melting of river ice is not expected. As a result, most river ice
that develops this week will likely remain in place through early
next week.

This outlook means that elevated water levels and potential impacts
are possible, but not yet certain. Persons with interests along area
rivers should closely monitor the latest forecasts.

This product may be updated by tomorrow afternoon.
$$

WSL/Borchardt