Watches, Warnings & Advisories



2 products issued by NWS for: Marengo IL

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1001 PM CST Fri Feb 14 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-160415-
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-
1001 PM CST Fri Feb 14 2025 /1101 PM EST Fri Feb 14 2025/

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

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Ice Accumulation Risk.

DISCUSSION...

Areas of freezing rain may lead to a light glaze of icing
tonight, especially south of a Pontiac, IL to Rensselaer, IN line.

Patchy light freezing drizzle may develop very late tonight into
early Saturday morning up to about the I-55 corridor and may lead
to some isolated slippery spots.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday...
  Limited Snow and Sleet Risk.
  Limited Ice Accumulation Risk.
Sunday...
  Limited Excessive Cold Risk.
  Limited Snow Risk.
Monday through Thursday...
  Elevated Excessive Cold Risk.


DISCUSSION...

A wintry mix of precipitation, including rain, freezing rain,
sleet, and snow, is possible on Saturday afternoon and evening,
though confidence in amounts remains low. Snow showers may then
persist into Sunday.

Bitterly cold temperatures are expected much of next week, with
dangerous wind chills of 20 to 30 below zero possible during the
early morning hours of Monday and Tuesday.

.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-INC007-073-089-111-127-152000-

Hydrologic Outlook
National Weather Service Chicago IL
315 PM CST Fri Feb 14 2025

...Risk for river ice formation and ice jams will continue into next
week...

Favorable conditions for river ice development and possible ice jams
will exist through today and then return early next week, impacting
the Rock, Fox, Des Plaines, and Kankakee river basins.

Very cold temperatures, favorable for rapid formation of river ice
on most areas rivers, will continue through today. After a brief
warm-up on Saturday, an additional period of very cold weather is
expected to arrive early next week. Area river gauges indicate
likely ice effects and a few minor ice jams, although no flooding
appears imminent at this time. New and worsening river ice cover
remains possible into tomorrow, which may lead to rises on area
rivers with little warning. A multi-day period of very cold
temperatures next week will likely bring another period of favorable
conditions for heavy river ice and ice jams.

No additional updates to this product are scheduled at this time,
but may be required prior to early next week if temperature
forecasts continue to indicate favorable river ice conditions.
$$

WSL