winter weather jim stefkovich national weather service office calera, alabama...
TRANSCRIPT
Winter WeatherWinter Weather
Jim StefkovichNational Weather Service Office
Calera, Alabama
NOAA
• Winter Storm Outlook: Alerts the public to the chance for winter storm conditions 3 to 7 days in advance.
• Winter Storm Watch: 50% confidence of meeting warning criteria within the next 12 to 48 hours.
• Winter Storm Warning: Issued for significant accumulations of snow, freezing rain, or sleet, usually issued 12 to 36 hours before the event begins.
• Winter Weather Advisory: Issued for accumulations of snow, freezing rain/drizzle, or sleet below warning criteria but are expected to cause hazardous driving conditions.
Winter Weather Definitions
Huntsville Birmingham Mobile TallahasseeAdvisoryWarning
1-2” ¼ to 2” Up to 2” Up to 1”
Snow
> 2” > 2” ≥ 2” ≥ 1”
Huntsville Birmingham Mobile TallahasseeAdvisoryWarning
< 1/4” < 1/4” < 1/4” < 1/4”
Freezing Rain
≥ 1/4” ≥ 1/4” ≥ 1/4” ≥ 1/4”
Criteria
Is it about the “Warning” or Impacts?
National Weather Service Birminghamwww.srh.noaa.gov/bmx