Winter Weather Workshop 2003 Jim Kramper Warning Coordination

Winter Weather Workshop 2003 Jim Kramper Warning Coordination Meteorologist National Weather Service St. Louis, MO

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

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

Outlooks v. Hazardous Weather Outlook v. HWOLSX: FLUS 43 v. Issued 6 am: Updates as needed v 7 Days

Watch v. Issued when there is a good probability that Winter Storm criteria will be met v. Typically issued for the Day 2 – 3 time period. v. WSW: WWUS 43

Warnings/Advisories Precipitation v. Warnings: Life threatening v. Advisories: Inconvenience v. Simplified Approach v. Blizzard Warning v. Ice Storm Warning v. Winter Weather Advisory

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

Warning/Advisory Criteria v. Ice Storm v. Ice accumulation ¼ inch

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

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

Non-Precipitation Events v. Wind Chill Warning: -25 or colder v. Wind Chill Advisory: -15 to – 24 v. Headline: – 10 to – 14 v. Blowing Snow Advisory v. WSW : WWUS 43 Formerly NPW

Winter Weather Awareness Day November 19, 2003