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Elev 810 ft, 42.18 °N, 89.85 °W

Lanark, IL Severe Weather Alertstar_ratehome

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Personal Weather Station
Location: Lanark, IL
Elevation: 810ft
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Active Weather Alerts

Flood Watch
Issued: 7:50 AM Apr. 15, 2026 – National Weather Service
...FLOOD WATCH IN EFFECT THROUGH THIS EVENING...

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of northwest Illinois, including the following
counties, Carroll, Jo Daviess and Stephenson and Iowa, including
the following counties, Benton, Buchanan, Delaware, Dubuque,
Jackson, Jones and Linn.

* WHEN...Through this evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
- Rainfall amounts of 1 to 3 inches occurred with thunderstorms
Tuesday evening, especially along and near the Highway 20
corridor. Additional rounds of showers and thunderstorms are
expected this morning, and again by mid afternoon through
this evening. These storms will be capable of producing
rainfall rates up to 1 to 2 inches per hour. Any additional
heavy rain on saturated ground will increase the risk for
flash flooding.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.

&&

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