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Jim Kramper Warning Coordination Meteorologist National Weather Service St. Louis, MO

Winter Weather Workshop 2003. Jim Kramper Warning Coordination Meteorologist National Weather Service St. Louis, MO. Winter Climatology. Visit NWS websites Local Data www.crh.noaa.gov/lsx National Data: Long term outlooks www.cpc.ncep.noaa.gov. Winter Weather Products.

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Jim Kramper Warning Coordination Meteorologist National Weather Service St. Louis, MO

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  1. Winter Weather Workshop 2003 Jim KramperWarning Coordination Meteorologist National Weather ServiceSt. Louis, MO

  2. Winter Climatology • Visit NWS websites • Local Data • www.crh.noaa.gov/lsx • National Data: Long term outlooks • www.cpc.ncep.noaa.gov

  3. Winter Weather Products • Three Tiered Approach • Outlook • Watch • Warning/Advisory

  4. Outlooks • Hazardous Weather Outlook • HWOLSX: FLUS43 • Issued 6 am: Updates as needed • 7 Days

  5. Watch • Issued when there is a good probability that Winter Storm criteria will be met • Typically issued for the Day 2 – 3 time period. • WSW: WWUS43

  6. Warnings/AdvisoriesPrecipitation • Warnings: Life threatening • Advisories: Inconvenience • Simplified Approach • Blizzard Warning • Ice Storm Warning • Winter Storm Warning • Winter Weather Advisory

  7. Warning/Advisory Criteria • Blizzard (3 hours) • Wind 35 mph: Sustained or frequent gusts • Visibility ¼ mile or less

  8. Warning/Advisory Criteria • Ice Storm • Ice accumulation ¼ inch

  9. Warning/Advisory Criteria • Winter Storm Warning • Snow: 6 inches in 12 hours 8 inches in 24 hours • Sleet: ½ inch accumulation • Combination of hazards: snow, sleet, freezing rain, etc.

  10. Warning/Advisory Criteria • Advisories • Snow: 3-5 inches (Headline under 3 inches) • Ice: Under ¼ inch accumulation • Sleet: Under ½ inch accumulation • Combination

  11. Non-Precipitation Events • Wind Chill Warning: -25 or colder • Wind Chill Advisory: -15 to –24 • Headline: –10 to –14 • Blowing Snow Advisory • WSW : WWUS43 Formerly NPW

  12. Winter Weather Awareness Day November 19, 2003

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