Severe Thunderstorm and Tropical Storm Bertha Impacts

Numerous severe thunderstorms are expected across a broad region from the Ohio Valley to the Mid-Atlantic and Northeast States today into tonight. Swaths of damaging wind gusts are expected and some tornadoes are possible. Bertha is expected to bring tropical storm conditions to portions of the Gulf Coast from the Florida Panhandle westward to southeastern Louisiana later today and Wednesday. Read More >

Hazardous Weather Conditions

Flood Watch until July 21, 11:00 PM PDT

Current conditions at

Mammoth Yosemite Airport (KMMH)

Lat: 37.6241°NLon: 118.8423°WElev: 7112.0ft.

Rain

68°F

20°C

Humidity	72%
Wind Speed	S 5 MPH
Barometer	30.33 in (1027.09 mb)
Dewpoint	59°F (15°C)
Visibility	9.00 mi
Last update	21 Jul 03:35 PM PDT

More Information:

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

Extended Forecast for

4 Miles ENE Mammoth Lakes CA

Flood Watch July 21, 03:59pm until July 21, 11:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch July 21, 03:59pm until July 21, 11:00pm
NOW until 11:00pm Tue
Flood Watch
This Afternoon
High: 74 °F
Showers
Likely
Tonight
Low: 50 °F
Chance
Showers then
Mostly Clear
Wednesday
High: 78 °F
Sunny
Wednesday Night
Low: 51 °F
Mostly Clear
Thursday
High: 83 °F
Sunny
Thursday Night
Low: 53 °F
Mostly Clear
Friday
High: 83 °F
Sunny
Friday Night
Low: 53 °F
Mostly Clear

Detailed Forecast

This Afternoon

Showers likely and possibly a thunderstorm before 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 74. Southwest wind around 5 mph. Chance of precipitation is 70%.

Tonight

A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 50. West wind around 5 mph becoming calm. Chance of precipitation is 30%.

Wednesday

Sunny, with a high near 78. Light west wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 51. Southwest wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 20 mph.

Thursday

Sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.

Thursday Night

Mostly clear, with a low around 53. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

Friday

Sunny, with a high near 83.

Friday Night

Mostly clear, with a low around 53.