WEATHER RADAR-WIND TURBINES

Illinois General Assembly - Full Text of SB3489

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104TH GENERAL ASSEMBLY
State of Illinois
2025 and 2026
SB3489

Introduced 2/5/2026, by Sen. Sally J. Turner

SYNOPSIS AS INTRODUCED:

New Act

Creates the Weather Radar Interference Mitigation Act. Provides that,
if a National Weather Service Forecast Office issues a winter storm
advisory, a winter storm watch, a winter storm warning, a blizzard
warning, a severe thunderstorm watch, a severe thunderstorm warning, a
tornado watch, or a tornado warning for an area within the State and if a
wind turbine operator owns, operates, or manages a wind turbine located
within 40 miles of the weather radar station operated by that National
Weather Service Forecast Office, then the wind turbine operator shall
pause operation of that wind turbine during the inclement weather alert.
Provides that, beginning August 1, 2027, no person shall construct a wind
turbine within 7 miles of a weather radar station operated by a National
Weather Service Forecast Office or a wind turbine with a height that is
greater than 60 meters within 10 miles of a weather radar station operated
by a National Weather Service Forecast Office. Provides that a wind
turbine owner or operator who knowingly violates the Act after receiving a
written warning is guilty of a business offense and subject to a fine in
excess of $1,000 but not exceeding $5,000. Makes findings. Defines terms.
Effective immediately.
LRB104 18789 BDA 32232 b

A BILL FOR

SB3489
LRB104 18789 BDA 32232 b
1

AN ACT concerning regulation.

2

Be it enacted by the People of the State of Illinois,
3
represented in the General Assembly:

4

Section 1.
Short title.
This Act may be cited as the
5
Weather Radar Interference Mitigation Act.

6

Section 5.
Findings.
The General Assembly finds that wind
7
turbines can interfere with the operation of nearby weather
8
radar stations, creating hazards for communities during
9
weather events.

10

Section 10.
Definitions.
In this Act:
11

"Inclement weather alert" means a winter storm advisory, a
12
winter storm watch, a winter storm warning, a blizzard
13
warning, a severe thunderstorm watch, a severe thunderstorm
14
warning, a tornado watch, or a tornado warning.
15

"Weather radar station" means a weather station that is
16
operated by the National Weather Service and that uses radar
17
to detect precipitation and its intensity and motion.
18

"Wind turbine" means a tower-mounted device that converts
19
the kinetic energy from the wind into electrical energy. "Wind
20
turbine" includes the tower, nacelle, and blades of a wind
21
turbine.
22

"Wind turbine operator" means (1) a person or entity with

SB3489
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LRB104 18789 BDA 32232 b
1
a direct ownership interest in and substantial control of a
2
wind turbine or (2) a person or entity that operates or manages
3
a wind turbine.

4

Section 15.
Operation of wind turbine paused during
5
inclement weather alert.
6

(a) If a National Weather Service Forecast Office issues
7
an inclement weather alert for an area within the State and if
8
a wind turbine operator owns, operates, or manages a wind
9
turbine located within 40 miles of the weather radar station
10
operated by that National Weather Service Forecast Office,
11
then the wind turbine operator shall pause operation of the
12
wind turbine during the inclement weather alert.
13

(b) Beginning August 1, 2027, no person shall construct a
14
wind turbine within 7 miles of a weather radar station
15
operated by a National Weather Service Forecast Office or a
16
wind turbine with a height that is greater than 60 meters
17
within 10 miles of a weather radar station operated by a
18
National Weather Service Forecast Office.

19

Section 20.
Penalties.
A wind turbine owner or operator
20
who is suspected of violating Section 15 of this Act shall
21
receive a written warning from the State's Attorney of the
22
county where the suspected violation occurred. A wind turbine
23
owner or operator who knowingly violates Section 15 of this
24
Act after receiving any written warning under this Section is

SB3489
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LRB104 18789 BDA 32232 b
1
guilty of a business offense and subject to a fine in excess of
2
$1,000 but not exceeding $5,000.

3

Section 99.
Effective date.
This Act takes effect upon
4
becoming law.

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