Watches, Warnings & Advisories



2 products issued by NWS for: Arlington Heights IL

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
511 AM CST Fri Feb 14 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-151115-
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-
511 AM CST Fri Feb 14 2025 /611 AM EST Fri Feb 14 2025/

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

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Limited Excessive Cold Risk this morning.
  Limited Snow Risk this evening and overnight.
  Limited Ice Accumulation Risk late tonight.

DISCUSSION...

A burst of accumulating snow is expected this evening, especially
for areas near and north of I-88 where up to 1 to 3 inches of snow
may fall within a short period. This combined with gusty winds
could result in sharply reduced visibility and hazardous travel.

An additional period of accumulating snow may redevelop across
parts of the area late tonight and may mix with or change over to
freezing rain and drizzle, especially south of a Pontiac, IL to
Rensselaer, IN line.

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

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

DISCUSSION...

A wintry mix of precipitation, including rain, freezing rain,
sleet, and snow, is possible on Saturday, though confidence in
snow, sleet, and icing 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-INC007-073-089-111-127-142100-

Hydrologic Outlook
National Weather Service Chicago IL
306 PM CST Thu Feb 13 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 arrive tonight into tomorrow and then continue into 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, have moved into the region. An additional
period of very cold weather is expected to arrive early next week.
The formation of heavy river ice cover means that ice jams will be
possible in isolated areas, especially along the Rock, Fox, Des
Plaines, and Kankakee rivers. Ice jams may cause rises and
fluctuations on area rivers with little warning.

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 will be updated by tomorrow afternoon.
$$

WSL