1. Winter Weather Exercise
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Winter Weather Exercise
Tuesday, December 5, AM
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Winter Storm Overview
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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.
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3. Winter Weather Summary Sheet
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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
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4. PA Snowfall Forecast: Tue-Thu
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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, :00 PM ET
Created: 12/05/ UTC
<2”
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Winter Storm Warning
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URGENT - WINTER WEATHER MESSAGE National Weather Service 0700 AM EST Tue Dec 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.
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6. Estimated Snow Start Time - Tuesday
11PM-MID
10-11PM
9-10PM
8-9PM

7. 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