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Responsive action SHOULD be taken in the near future

Iowa Severe Flood Watch | Effective 09/06/2026 09:05

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of southwest and west central Iowa, including the following counties, in southwest Iowa, Harrison and Shelby. In west central Iowa, Monona. * WHEN...Through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Slow moving thunderstorms may lead to rapid rainfall accumulations. Hourly rainfall rates of 2 to 4 inches are

Montana Severe Flood Watch | Effective 09/06/2026 08:51

* WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of northwest and west central Montana, including the following areas, in northwest Montana, Flathead/Mission Valleys and West Glacier Region. In west central Montana, Potomac/Seeley Lake Region. * WHEN...From 3 PM MDT this afternoon through Tuesday morning. * IMPACTS...Excessive runoff may result in flooding of creeks, streams, and other low-lying and flood-prone locations. Creeks and

Iowa, Minnesota, South Dakota Severe Flood Watch | Effective 09/06/2026 08:23

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Iowa, including the following areas, Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon, O'Brien, Osceola, Plymouth, Sioux and Woodbury, southwest Minnesota, including the following areas, Cottonwood, Jackson, Murray, Nobles, Pipestone and Rock, and southeast South Dakota, including the following areas, Lincoln, Minnehaha and Union. * WHEN...Until 10 PM CDT this evening.

Minnesota Severe Flood Watch | Effective 09/06/2026 08:26

Slow moving thunderstorms are possible throughout the day today. These storms could produce high rainfall rates, which could lead to flash flooding. A flash flood watch means "be prepared", and make sure you are able to receive any warnings if they are issued. * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...A portion of south central Minnesota, including the following counties, Martin and Watonwan. * WHEN...Until 10 PM CDT this evening. * IMPACTS...Flooding may occur in poor drainage and urban areas.

Hawaii Severe Flood Watch | Effective 09/06/2026 07:15

Moisture along the eastern flank of Hurricane Lowell will bring periods of heavy rain to the main Hawaiian Islands late Sunday through Tuesday. * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Maui, Lanai, Molokai, Oahu, The Big Island and Kahoolawe. * WHEN...From noon HST today through Tuesday afternoon. * IMPACTS...Flood prone roads and other low lying areas may be closed due to elevated runoff and overflowing streams. Urban areas may

Hawaii Severe Flood Watch | Effective 09/06/2026 07:15

Moisture along the eastern flank of Hurricane Lowell will bring periods of heavy rain to the main Hawaiian Islands late Sunday through Tuesday. * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Kauai and Niihau. * WHEN...From noon HST today through Tuesday afternoon. * IMPACTS...Significant flooding may occur due to the overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff.

Hawaii Severe Tropical Storm Watch | Effective 09/06/2026 02:27

* LOCATIONS AFFECTED - Waimea - Barking Sands - Hanapepe * WIND - LATEST LOCAL FORECAST: Below tropical storm force wind - Peak Wind Forecast: 25-35 mph with gusts to 45 mph - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39 to 57 mph - The wind threat has remained nearly steady from the previous assessment. - PLAN: Plan for hazardous wind of equivalent tropical storm force.

Hawaii Severe Tropical Storm Watch | Effective 09/06/2026 02:27

* LOCATIONS AFFECTED - Puuwai * WIND - LATEST LOCAL FORECAST: Equivalent Tropical Storm force wind - Peak Wind Forecast: 30-40 mph with gusts to 60 mph - Window for Tropical Storm force winds: Monday afternoon until early Tuesday morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39 to 57 mph - The wind threat has remained nearly steady from the previous assessment.

Hawaii Severe Tropical Storm Watch | Effective 09/06/2026 02:27

* LOCATIONS AFFECTED - Kokee State Park - Mount Waialeale * WIND - LATEST LOCAL FORECAST: Equivalent Tropical Storm force wind - Peak Wind Forecast: 30-40 mph with gusts to 45 mph - Window for Tropical Storm force winds: Monday afternoon until early Tuesday morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39 to 57 mph - The wind threat has remained nearly steady from the

Hawaii Severe Tropical Storm Watch | Effective 09/06/2026 02:27

* LOCATIONS AFFECTED - Lihue - Wailua - Anahola * WIND - LATEST LOCAL FORECAST: Below tropical storm force wind - Peak Wind Forecast: 15-25 mph with gusts to 40 mph - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39 to 57 mph - The wind threat has remained nearly steady from the previous assessment. - PLAN: Plan for hazardous wind of equivalent tropical storm force.
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