Cold Advisory for Newborn Livestock (CANL)

Criteria

Forecasts

Criteria

Background

:

Based on our research and feedback from the ranching community, the following were identified as hazardous weather elements that increased risk of problems or death to exposed newborns:

Wind chill
Rain or Wet Snow
High Humidity (because it makes it more difficult to dry off the animal)
Combinations of these elements (such as windchill and rain) are particularly dangerous
Sunshine vs. Cloudy Days

The criteria used to generate the forecasts from the tab above is seen below:

NONE: Wind Chill above 41 degrees
SLIGHT: Wind Chill less than 41 degrees for 2 or more hours
MILD: Wind Chill less than 32 degrees for 2 or more hours
MODERATE: Wind Chill less than 0 degrees for 2 or more hours or Wind Chill less than 32 degrees and .02" precipitation
SEVERE: Wind Chill of -9 degrees or colder for two or more hours, or wind chill of less than 32 degrees and .05" of precipitation
EXTREME: Wind Chill of -18 or colder for two or more hours, or wind chill less than 32 degrees and .1" of precipitation

For sunny conditions (Cloud cover less than 40%), reduce SLIGHT-EXTREME by one category
For humid conditions (Minimum relative humidity's remaining above 95%), increase MOD-SEVERE by one category
For dry snow conditions (Maximum temperature remains less than 26F), double the precipitation thresholds for MOD-EXTREME

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