Station Name: Madison River bl Hebgen Lake nr Grayling MT
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 6,503 feet / 1,982 meters

Nearest Address:
8998 Hebgen Lake Rd
Grayling, MT 59758
Gallatin County

GPS Coordinates: 44.86639167, -111.3387806

Nearby Water Temperatures

Red Flag Warning issued July 15 at 2:25AM MDT until July 15 at 9:00PM MDT by NWS Pocatello ID

Effective: Tue July 15, 2025, 2:25 AM
Expires: Tue July 15, 2025, 9:00 PM

* AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 411 Centennial Mountains and Snake River Range/Targhee NF, Fire Weather Zone 413 Caribou Range/Caribou NF and Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River. * TIMING...Scattered thunderstorms are expected to develop during the afternoon and evening hours, supporting the potential for gusty outflow winds and frequent lightning. * WINDS...A dry low level environment will promote the potential for storms to produce gusty outflow wind gusts in excess of 40-50 mph, locally higher up to around 60 mph. * RELATIVE HUMIDITY...As low as 15 to 25 percent. * THUNDERSTORMS...25 to 45 percent coverage expected. * IMPACTS...Critical fire weather conditions are expected today. Lightning may generate new fire starts. Any new fire starts or existing fires may spread rapidly.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho: - Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain. - Thunderstorm coverage of 25 percent, without specific rainfall criteria.

Red Flag Warning issued July 15 at 2:25AM MDT until July 15 at 9:00PM MDT by NWS Pocatello ID

Effective: Tue July 15, 2025, 2:25 AM
Expires: Tue July 15, 2025, 9:00 PM

* AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 411 Centennial Mountains and Snake River Range/Targhee NF, Fire Weather Zone 413 Caribou Range/Caribou NF and Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River. * TIMING...Scattered thunderstorms are expected to develop during the afternoon and evening hours, supporting the potential for gusty outflow winds and frequent lightning. * WINDS...A dry low level environment will promote the potential for storms to produce gusty outflow wind gusts in excess of 40-50 mph, locally higher up to around 60 mph. * RELATIVE HUMIDITY...As low as 15 to 25 percent. * THUNDERSTORMS...25 to 45 percent coverage expected. * IMPACTS...Critical fire weather conditions are expected today. Lightning may generate new fire starts. Any new fire starts or existing fires may spread rapidly.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho: - Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain. - Thunderstorm coverage of 25 percent, without specific rainfall criteria.

Red Flag Warning issued July 15 at 2:25AM MDT until July 15 at 9:00PM MDT by NWS Pocatello ID

Effective: Tue July 15, 2025, 2:25 AM
Expires: Tue July 15, 2025, 9:00 PM

* AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 411 Centennial Mountains and Snake River Range/Targhee NF, Fire Weather Zone 413 Caribou Range/Caribou NF and Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River. * TIMING...Scattered thunderstorms are expected to develop during the afternoon and evening hours, supporting the potential for gusty outflow winds and frequent lightning. * WINDS...A dry low level environment will promote the potential for storms to produce gusty outflow wind gusts in excess of 40-50 mph, locally higher up to around 60 mph. * RELATIVE HUMIDITY...As low as 15 to 25 percent. * THUNDERSTORMS...25 to 45 percent coverage expected. * IMPACTS...Critical fire weather conditions are expected today. Lightning may generate new fire starts. Any new fire starts or existing fires may spread rapidly.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho: - Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain. - Thunderstorm coverage of 25 percent, without specific rainfall criteria.

Red Flag Warning issued July 15 at 2:25AM MDT until July 15 at 9:00PM MDT by NWS Pocatello ID

Effective: Tue July 15, 2025, 2:25 AM
Expires: Tue July 15, 2025, 9:00 PM

* AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 411 Centennial Mountains and Snake River Range/Targhee NF, Fire Weather Zone 413 Caribou Range/Caribou NF and Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River. * TIMING...Scattered thunderstorms are expected to develop during the afternoon and evening hours, supporting the potential for gusty outflow winds and frequent lightning. * WINDS...A dry low level environment will promote the potential for storms to produce gusty outflow wind gusts in excess of 40-50 mph, locally higher up to around 60 mph. * RELATIVE HUMIDITY...As low as 15 to 25 percent. * THUNDERSTORMS...25 to 45 percent coverage expected. * IMPACTS...Critical fire weather conditions are expected today. Lightning may generate new fire starts. Any new fire starts or existing fires may spread rapidly.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho: - Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain. - Thunderstorm coverage of 25 percent, without specific rainfall criteria.