Coastal and Marine Impacts from Imelda and Humberto as Both Track Away from the Southeast U.S.

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine and rip current conditions to the east coast of Florida and Georgia today, spreading north along much of the east coast of the U.S. this week. Heavy rainfall north and west of Imelda falling across coastal Florida and Georgia into the Carolinas could cause isolated flash and urban flooding through Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

Lat: 44.977222°NLon: 110.695278°WElev: 6138.0ft.

NA

71°F

22°C

Humidity 32%
Wind Speed S 7 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Last update 29 Sep 02:15 PM MDT
Extended Forecast for

10 Miles WNW Mount Holmes WY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 64. South southwest wind around 14 mph, with gusts as high as 21 mph.

    High: 64 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 42. South wind 7 to 11 mph.

    Low: 42 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after noon.  Mostly cloudy, with a high near 54. Breezy, with a south southwest wind 11 to 17 mph, with gusts as high as 25 mph.  Chance of precipitation is 40%.

    High: 54 °F

    Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 40. South wind 9 to 14 mph, with gusts as high as 26 mph.  Chance of precipitation is 40%.

    Low: 40 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 9am.  Partly sunny, with a high near 55. Breezy, with a south southwest wind 9 to 18 mph, with gusts as high as 31 mph.  Chance of precipitation is 30%.

    High: 55 °F

    Slight Chance
    T-storms then
    Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms, then a chance of showers after midnight.  Mostly cloudy, with a low around 40. Breezy, with a south wind 7 to 15 mph, with gusts as high as 29 mph.  Chance of precipitation is 40%.

    Low: 40 °F

    Slight Chance
    T-storms and
    Breezy then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon.  Mostly cloudy, with a high near 55. Breezy, with a south southwest wind 7 to 15 mph, with gusts as high as 28 mph.  Chance of precipitation is 50%.

    High: 55 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight.  Mostly cloudy, with a low around 36. Chance of precipitation is 70%.

    Low: 36 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely, with thunderstorms also possible after noon.  Mostly cloudy, with a high near 49. Chance of precipitation is 60%.

    High: 49 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 64. South southwest wind around 14 mph, with gusts as high as 21 mph.
Tonight
Increasing clouds, with a low around 42. South wind 7 to 11 mph.
Tuesday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 54. Breezy, with a south southwest wind 11 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 40. South wind 9 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 9am. Partly sunny, with a high near 55. Breezy, with a south southwest wind 9 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Wednesday Night
A slight chance of showers and thunderstorms, then a chance of showers after midnight. Mostly cloudy, with a low around 40. Breezy, with a south wind 7 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Thursday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 55. Breezy, with a south southwest wind 7 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 36. Chance of precipitation is 70%.
Friday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 49. Chance of precipitation is 60%.
Friday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 32.
Saturday
A slight chance of showers. Mostly sunny, with a high near 49.
Saturday Night
A chance of rain and snow showers. Some thunder is also possible. Snow level 9100 feet lowering to 7900 feet after midnight . Mostly cloudy, with a low around 29.
Sunday
A chance of rain and snow showers. Some thunder is also possible. Snow level 7700 feet. Partly sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles WNW Mount Holmes WY
 44.87°N 111.04°W (Elev. 7201 ft)
2:50 pm MDT Sep 29, 2025
3pm MDT Sep 29, 2025-6pm MDT Oct 5, 2025
 
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Additional Resources

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