Flood Watch for Yellowstone National Park and Wyoming Ranges Extended Through Sunday Morning
The National Weather Service has extended the Flood Watch for portions of Wyoming, including Yellowstone National Park, now running through Sunday morning, August 30, 2026.
4 reports on this incident · first at Aug 28, 2026, 12:51 p.m. ET
Earlier reports
Aug 28, 2026, 12:56 p.m. ET
Flood Watch Issued for Yellowstone National Park and Wyoming Ranges Through Sunday Morning
The National Weather Service in Riverton, Wyoming, has issued a Flood Watch for portions of central, northwest, and west central Wyoming, effective from 6 PM MDT Saturday, August 29, through noon MDT Sunday, August 30. The watch covers Yellowstone National Park, the Absaroka Mountains, the Teton and Gros Ventre Mountains, Jackson Hole, the Wind River Mountains West, Star Valley, and the Salt River and Wyoming Ranges, including the cities of Jackson, Alpine, Afton, Old Faithful, Mammoth, Lake, Star Valley Ranch, and Thayne.
Excessive rainfall may cause flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. The National Weather Service advises monitoring later forecasts and being alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Aug 28, 2026, 12:53 p.m. ET
Flood Watch for Yellowstone National Park, Absaroka Mountains, Teton and Gros Ventre Mountains Through Sunday Morning
The National Weather Service in Riverton, Wyoming, has issued a Flood Watch for portions of central, northwest, and west central Wyoming, warning that excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.
The watch is in effect from 6 PM MDT Friday, August 28, 2026, through Sunday morning, August 30, 2026. It covers Yellowstone National Park, the Absaroka Mountains, the Teton and Gros Ventre Mountains, Jackson Hole, the Wind River Mountains West, Star Valley, and the Salt River and Wyoming Ranges, including the cities of Jackson, Alpine, Afton, Old Faithful, Mammoth, Lake, Star Valley Ranch, and Thayne.
Residents are advised to 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.
Aug 28, 2026, 12:51 p.m. ETFirst report
Flood Watch Issued for Parts of Wyoming Through Sunday Morning
The National Weather Service in Riverton, Wyoming, has issued a Flood Watch for portions of central, northwest, and west central Wyoming, effective from 6 PM MDT Saturday, August 29, through Sunday morning, August 30, 2026. The watch was issued at 10:43 AM MDT on August 28.
The watch covers seven zones, including Yellowstone National Park, the Absaroka Mountains, the Teton and Gros Ventre Mountains, Jackson Hole, the Wind River Mountains West, Star Valley, and the Salt River and Wyoming Ranges. Cities in the affected area include Jackson, Alpine, Afton, Old Faithful, Mammoth, Lake, Star Valley Ranch, and Thayne.
Excessive runoff from heavy rainfall may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Residents are advised to 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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- Version 128 Aug 2026, 17:01current
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- Version 128 Aug 2026, 16:53current
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- Version 128 Aug 2026, 16:56current
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