Pacific Storm Moves Inland; Clipper System for the Northeast; Strong Storm Impacting Alaska

A Pacific system will bring low elevation rain and isolated thunderstorms to California tonight. Heavy snow is expected for the Sierra Nevada through late tomorrow. In the Northeast, snow may cause hazardous travel this evening into tomorrow. In Alaska, a powerful storm will bring dangerous seas, blizzard conditions, strong winds and bitterly cold across the state through mid-week. Read More >

Cold Advisory For Newborn Livestock (CANL)

The CANL graphics below show the risk of cold exposure to newborn livestock. The risk is related to wind chill temperature, precipitation, and humidity, and ranges from "NONE" for no risk, to "EXTREME" for rare and particularly dangerous situations. For more information about this product, including categorical thresholds, click here. The images below are each valid for a 6 hour time period out to 66 hours. Click on the images to expand and see the forecast valid time. The CANL images are updated at least twice daily at 4 am and 4 pm PST.

0 Hour	6 Hour	12 Hour

18 Hour	24 Hour	30 Hour

36 Hour	42 Hour	48 Hour

54 Hour	60 Hour	66 Hour

NONE: Wind Chill above 41 degrees
SLIGHT: Wind Chill less than 41 degrees for two or more hours
MILD: Wind Chill less than 32 degrees for two or more hours
MODERATE: Wind Chill less than 0 degrees for two or more hours or Wind Chill less than 36 degrees for two or more hours and .02" precipitation
SEVERE: Wind Chill of -9 degrees or colder for two or more hours, or wind chill of less than 34 degrees for two or more hours and .05" of precipitation
EXTREME: Wind Chill of -18 or colder for two or more hours, or wind chill less than 32 degrees for two or more hours and .1" of precipitation

For sunny conditions (Cloud cover less than 40%), reduce wind chill thresholds by 10 degrees
For humid conditions (Minimum relative humidity remaining above 95%), increase wind chill thresholds by 10 degrees
For dry snow conditions (Maximum temperature remains less than 26F), double the precipitation thresholds for MOD-EXTREME

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