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Flash flood warning
Archived — this story has rotated out of today’s deck. It is kept here in full.
The gist
National Weather Service issued flash flood warnings for Onondaga County, Syracuse, and Southern Utah.
Flash floods threaten lives and property, so heed warnings and move to high ground.
Background
Flash flood warnings are issued when flooding is imminent or occurring, often caused by heavy thunderstorms. These warnings are in effect for areas like Onondaga County in New York and Southern Utah, including national parks, where sudden floods can be life-threatening.
How it unfolded
- Aug 27, 2026Flash flood warnings issued for New York City area due to heavy rain.
- Aug 30, 2026Flash flood warnings issued for parts of southern and central Utah, including Kane County.
- Aug 31, 2026Flash flood warnings and watches expanded across Utah, affecting Zion, Bryce Canyon, and Capitol Reef National Parks.
- Sep 2, 2026Flash flood warning active for Onondaga County, New York, caused by thunderstorms.
Who’s saying what
- Official
- National Weather Service urges immediate action: move to high ground and do not drive on flooded roads.
- Public
- A visitor at Bryce Canyon noted people ignored warnings and got trapped when the monsoon hit.