Heavy Rainfall Across the Lower Mississippi Valley and Gulf Coast; Storm System Impacting the Northwest

Periods of heavy rainfall are expected across the Lower Mississippi Valley and Gulf Coast Friday. A Slight Risk (level 2 of 4) of Excessive Rainfall has been issued for portions of the Texas and Louisiana coast. A strong Pacific storm will impact the Pacific Northwest and Great Basin Friday through the weekend, bringing high elevation snow, lower elevation rain, and strong winds. Read More >

Hazardous Weather Conditions

Winter Storm Warning in effect from May 4, 11:00 AM PDT until May 5, 08:00 AM PDT

Current conditions at

Mammoth Yosemite Airport (KMMH)

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

Clear

39°F

4°C

Humidity	75%
Wind Speed	N 0 MPH
Barometer	29.94 in (1013.89 mb)
Dewpoint	32°F (0°C)
Visibility	10.00 mi
Last update	04 May 02:15 AM PDT

More Information:

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

Extended Forecast for

8 Miles ENE Mammoth Lakes CA

Winter Storm Warning May 4, 11:00am until May 5, 08:00am

Click here for hazard details and duration

Winter Storm Warning

Overnight
Low: 37 °F
Mostly Cloudy
Saturday
High: 55 °F
Breezy.
Chance
Showers then
Showers
Likely
Saturday Night
Low: 21 °F
Breezy. Snow
Showers
Likely then
Mostly Clear
Sunday
High: 44 °F
Sunny and
Breezy then
Mostly Sunny
Sunday Night
Low: 24 °F
Mostly Clear
Monday
High: 57 °F
Sunny
Monday Night
Low: 29 °F
Mostly Clear
Tuesday
High: 61 °F
Sunny
Tuesday Night
Low: 28 °F
Clear

Detailed Forecast

Overnight

Mostly clear early, then becoming mostly cloudy, with a low around 37. West wind around 5 mph.

Saturday

Showers likely, mainly after 2pm. Snow level 8400 feet lowering to 7800 feet in the afternoon . Mostly cloudy, with a high near 55. Breezy, with a south wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 60%.

Saturday Night

Snow showers likely before 11pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 21. Breezy, with a southwest wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Sunday

Sunny, with a high near 44. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.

Sunday Night

Mostly clear, with a low around 24. West wind 5 to 10 mph, with gusts as high as 20 mph.

Monday

Sunny, with a high near 57. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

Monday Night

Mostly clear, with a low around 29.

Tuesday

Sunny, with a high near 61.

Tuesday Night

Clear, with a low around 28.