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To amend the Weather Research and Forecasting Innovation Act of 2017 to expand the goals of the tornado warning improvement and extension program, and for other purposes.
Summary
This bill amends the Weather Research and Forecasting Innovation Act of 2017 to expand the tornado warning improvement program. The bill directs the Under Secretary of Commerce to focus on developing improved tornado forecasts, predictions, and warnings for three specific areas: fast-developing storm systems such as derechos, areas that have historically had few or no tornadoes, and tornadoes that occur during evening or nighttime hours. These additions represent new focuses for the existing tornado warning improvement and extension program.
AI-generated plain-language summary of the bill text — neutral, and may be imperfect. See the full text below for the exact wording.
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Actions (2)
- Sep 10, 2025 Referred to the House Committee on Science, Space, and Technology. · house
- Sep 10, 2025 Introduced in House
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Full text
IN THE HOUSE OF REPRESENTATIVES
September 10, 2025
Ms. Stevens introduced the following bill; which was referred to the Committee on Science, Space, and Technology
A BILL
To amend the Weather Research and Forecasting Innovation Act of 2017 to expand the goals of the tornado warning improvement and extension program, and for other purposes.
Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled,
SECTION 1. SHORT TITLE.
This Act may be cited as the “Tornado and Windstorm Innovation for Safety and Tracking Enhancement Research Act” or the “TWISTER Act”.
SEC. 2. EXPANSION OF GOALS OF TORNADO WARNING IMPROVEMENT AND EXTENSION PROGRAM.
Section 103 of the Weather Research and Forecasting Innovation Act of 2017 (15 U.S.C. 8513; relating to the tornado warning improvement and extension program) is amended—
(1) by striking “The goal of such program” and inserting the following:
“(1) In general.—The goal of such program”; and
(2) by adding at the end the following:
“(2) Additional focuses.—In carrying out paragraph (1), the Under Secretary shall ensure the development of innovative tornado forecasts, predictions, and warnings, with a particular focus on the following:
“(A) Fast-developing storm systems, such as derechos.
“(B) Areas historically absent of tornadoes.
“(C) Evening or nighttime tornadoes.”. <all>
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