Winter Weather Exercise …EXERCISE…EXERCISE…EXERCISE… Winter Weather Exercise Tuesday, December 5, 2017 8 AM …EXERCISE…EXERCISE…EXERCISE…

…EXERCISE…EXERCISE…EXERCISE… …EXERCISE…EXERCISE…EXERCISE… Winter Storm Overview …EXERCISE…EXERCISE…EXERCISE… A potent, slow moving winter storm is forecast to bring moderate to heavy snowfall to the Commonwealth late tonight through Wednesday night. Light snow is forecast to begin falling from 8-11PM tonight. The snow will intensify by the Wednesday morning commute. A heavy snow will combine with strong winds for much of Wednesday morning and afternoon. The duration of the storm will create challenges for transportation, utilities, and movement of resources. …EXERCISE…EXERCISE…EXERCISE…

Winter Weather Summary Sheet …EXERCISE…EXERCISE…EXERCISE… Begin: Tuesday Evening End: Thursday Morning Location: All of PA Heaviest SC Mountains Type: Heavy & Wet Snow Peak Rate: 2-3”/hr (Wed 4AM-Noon) Accumulation: Yes Hazards: Dangerous Travel Numerous Utility Outages Some Response Delays Confidence: Low Medium High Very High …EXERCISE…EXERCISE…EXERCISE…

PA Snowfall Forecast: Tue-Thu …EXERCISE…EXERCISE…EXERCISE… 24-30” 18-24” 12-18” 8-12” 8-12” 12-18” 12-18” 18-24” 8-12” 12-18” 6-8” 24-30” 4-6” 2-4” Valid Through December 8, 2017 8:00 PM ET Created: 12/05/2017 1100 UTC <2” …EXERCISE…EXERCISE…EXERCISE…

…EXERCISE…EXERCISE…EXERCISE… …EXERCISE…EXERCISE…EXERCISE… Winter Storm Warning …EXERCISE…EXERCISE…EXERCISE… URGENT - WINTER WEATHER MESSAGE National Weather Service 0700 AM EST Tue Dec 5 2017 ...WINTER STORM WARNING IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY MORNING... * LOCATIONS...All of Pennsylvania * HAZARD TYPES...Heavy snow and potential for blowing and drifting snow. * SNOW ACCUMULATIONS...There is the potential for 24 inches or more in the Alleghenies and Laurel Highlands. The central mountains, Susquehanna Valley, and northeast mountains have the potential for 12 inches or more of snow. * TIMING...Snow will move into southern PA Tuesday evening and into northern PA later. The snow will rapidly cover the entire area before midnight. The heaviest snow will occur Tuesday night through midday Wednesday. * IMPACTS...The heavy snow will make many roads impassable and may produce widespread power outages due to the weight of the snow on tree limbs and power lines. * WINDS...Northeast 15 to 25 mph with gusts up to 35 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... Review winter weather safety and preparedness information at weather.gov/winter. …EXERCISE…EXERCISE…EXERCISE…

Estimated Snow Start Time - Tuesday 11PM-MID 10-11PM 9-10PM 8-9PM

Extreme Cold Strong Wind Hazard Overview Tonight-Wednesday Snow & Wind: Heavy snow & strong winds will produce the following hazards: >Near impossible travel conditions due to slick roads and reduced visibility >Numerous downed trees and utilities outages due to snow weight Threat Monitor DAY TUE WED THU FRI SAT Potential Hazard PM Snow Heavy Snow Strong Wind Snow Strong Wind Extreme Cold Strong Wind Extreme Cold Blowing Snow Confidence High Medium Low