Severe Thunderstorms Tonight in the Mid-Atlantic; Tropical Storm Bertha in the Gulf

Scattered thunderstorms with severe gusts, hail and a tornado risk are possible near a cold front from the Ohio Valley to the Mid-Atlantic tonight. Tropical Storm Bertha is expected to bring tropical storm conditions to portions of the Gulf Coast from the panhandle of Florida into Louisiana through Wednesday. Read More >

Hazardous Weather Conditions

Flood Watch until July 23, 06:00 AM MDT

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

65°F

18°C

Humidity	71%
Wind Speed	SSE 3 MPH
Barometer	NA
Dewpoint	56°F (13°C)
Visibility	NA
Last update	22 Jul 03:15 AM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

10 Miles W Mount Holmes WY

Flood Watch July 22, 03:53am until July 23, 06:00am

Click here for hazard details and duration

Flood Watch

Flood Watch July 22, 03:53am until July 23, 06:00am
NOW until 6:00am Thu
Flood Watch
Overnight
Low: 54 °F
Slight Chance
Showers
Wednesday
High: 77 °F
Slight Chance
T-storms then
T-storms
Wednesday Night
Low: 54 °F
Showers
Likely then
Slight Chance
T-storms
Thursday
High: 77 °F
Slight Chance
T-storms then
Chance
T-storms
Thursday Night
Low: 54 °F
Slight Chance
T-storms then
Mostly Clear
Friday
High: 82 °F
Sunny
Friday Night
Low: 56 °F
Slight Chance
T-storms then
Mostly Clear
Saturday
High: 83 °F
Sunny then
Sunny and
Breezy

Detailed Forecast

Overnight

A slight chance of showers between 4am and 5am. Mostly cloudy, with a low around 54. Calm wind. Chance of precipitation is 20%.

Wednesday

Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 4pm, then showers and thunderstorms likely after 4pm. High near 77. Calm wind becoming northwest around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and thunderstorms likely, mainly before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 54. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday

A 50 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 77. Calm wind becoming west southwest around 6 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A 10 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 54. Light and variable wind.

Friday

Sunny, with a high near 82. Light and variable wind becoming southwest 9 to 14 mph in the morning. Winds could gust as high as 25 mph.

Friday Night

A 10 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 56. Southwest wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 23 mph.

Saturday

Sunny, with a high near 83. Breezy.

Saturday Night

Partly cloudy, with a low around 53.

Sunday

Sunny, with a high near 82.

Sunday Night

Mostly clear, with a low around 53.

Monday

A slight chance of showers and thunderstorms. Sunny, with a high near 82.

Monday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 54.