National Weather Service United States Department of Commerce

Severe Thunderstorms Likely Across the Ozarks and Lower Ohio Valley

Severe thunderstorms capable of producing damaging wind gusts, large hail, and a few tornadoes, are likely to develop this afternoon from parts of the lower Ohio Valley into the southern Plains. An Enhanced Risk (Level 3 of 5) outlook has been issued. Further north, widespread rain showers are expected across portions of the Great Lakes and Northeast U.S. Read More >

Boise, ID

Weather Forecast Office

Cold Advisory For Newborn Livestock (CANL)

Weather.gov > Boise, ID > Cold Advisory For Newborn Livestock (CANL)

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 click here for the product fact sheet. The images below are each valid for a 6 hour time period out to 72 hours. Click on the images to expand and see the forecast valid time. The CANL images are updated at least twice daily at 5 am and 5 pm.

 
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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