Severe Thunderstorms Possible from Ohio Valley to Mid-Atlantic; Excessive Heat in Central U.S.

Thunderstorms associated with wind damage and a risk for a tornado, will be possible from the Ohio Valley, central Appalachians and Mid-Atlantic states on Thursday. Dangerous heat will be possible from the Central Plains into the northern Gulf Coast though the weekend. Heavy rain in the Southwest U.S. could lead to flash flooding over the next several days as monsoonal conditions persist. Read More >

Hazardous Weather Conditions

Flash Flood Watch in effect from July 30, 12:00 PM PDT until July 30, 08:00 PM PDT

En Español

Current conditions at

Mammoth Yosemite Airport (KMMH)

Lat: 37.6241°NLon: 118.8423°WElev: 7112ft.

Mostly Cloudy

79°F

26°C

Humidity	24%
Wind Speed	NNW 5 MPH
Barometer	30.32 in (1026.75 mb)
Dewpoint	39°F (4°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	29 Jul 04:15 PM PDT

More Information:

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

Extended Forecast for

10 Miles ESE Mammoth Lakes CA

Flash Flood Watch July 30, 12:00pm until July 30, 08:00pm

Click here for hazard details and duration

Flash Flood Watch

This
Afternoon

Showers
High: 81 °F
Tonight

Chance
T-storms then
Partly Cloudy
Low: 53 °F
Friday

T-storms
Likely
High: 80 °F
Friday
Night

T-storms
Likely then
Chance
T-storms
Low: 54 °F
Saturday

Showers
Likely
High: 75 °F
Saturday
Night

Showers
Likely then
Slight Chance
T-storms
Low: 50 °F
Sunday

Chance
T-storms
High: 77 °F
Sunday
Night

Slight Chance
T-storms then
Mostly Clear
Low: 50 °F
Monday

Sunny
High: 81 °F

Detailed Forecast

This Afternoon

Showers and possibly a thunderstorm before 5pm, then a chance of showers and thunderstorms after 5pm. High near 81. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.

Tonight

A 50 percent chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 53. West wind 5 to 10 mph becoming light and variable in the evening.

Friday

Showers and thunderstorms likely after 11am. Partly sunny, with a high near 80. Light and variable wind becoming west 5 to 10 mph in the afternoon. Chance of precipitation is 70%.

Friday Night

Showers and thunderstorms likely, mainly before 11pm. Cloudy, with a low around 54. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.

Saturday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 75. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night

Showers likely and possibly a thunderstorm before 11pm, then a slight chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 50. West wind 5 to 10 mph becoming light northwest in the evening. Chance of precipitation is 60%.

Sunday

A slight chance of showers, then a chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 77. Chance of precipitation is 40%.

Sunday Night

A slight chance of showers and thunderstorms before 11pm. Mostly clear, with a low around 50.

Monday

Sunny, with a high near 81.

Monday Night

Clear, with a low around 51.

Tuesday

Sunny, with a high near 84.

Tuesday Night

Mostly clear, with a low around 51.