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Montgomery County Office Of Emergency Management and Homeland Security. By Christopher Voss Severe Storm July 25, 2010. Storm Timeline Sunday, July 25. 2:39 pm - National Weather Service issues a Severe Thunderstorm Warning for Montgomery County

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Montgomery county office of emergency management and homeland security

Montgomery County Office Of Emergency Management and Homeland Security

By

Christopher Voss

Severe Storm

July 25, 2010


Storm timeline sunday july 25
Storm TimelineSunday, July 25

  • 2:39 pm - National Weather Service issues a Severe Thunderstorm Warning for Montgomery County

    • 2:44 pm - Alert Montgomery and MCEN Messages Sent

  • 3:21 pm – National Weather Service issues a Tornado Warning for Montgomery County

    • 3:22 pm Alert Montgomery and MCEN Message Sent

  • Storm Statistics –

    • Winds 60-75 mph, sporadic gusts of 80-90 mph

  • Emergency Response and Situational Awareness


Storm aftermath
Storm Aftermath

  • Pepco customer outages reached a peak of 219,800 out of 302,000 total customers (68%)

  • 195 Feeders Out

  • 5 Substations Down

  • 15 – 69kv sub transmission feeders locked out

  • 330 Traffic Signals Out

  • Pepco indicates multi-day event

  • Potomac Water Treatment Plant is without power

  • Rockville City Water Impacted

  • 911 Call Volume

    • FRS 600 (280 average)

  • Shady Grove Hospital w/o power


Initial actions
Initial Actions

  • Storm Operation Center Opens Sunday Evening

  • 311 Center open Sunday Evening

  • Emergency Operation Center opens 5 am Monday morning

  • Priority 1 - Preserving life and safety, Damage Assessment, and Addressing Critical Needs

    • Police staff critical intersections

    • Police, DOT and Pepco respond to downed trees and power lines

    • Power Restoration for Priority 1 locations

    • Fire/Rescue responds to calls for assistance and pre-deploys tankers


Response and community notification
Response and Community Notification

  • Power Restoration for General Public, Tree Removal, Traffic Management, and Sheltering

    • July 25, 20:17 hours and 23:17 hours – Alert Montgomery message sent updating citizens regarding utilities, County closures, water restrictions and shelters

    • July 25, 22:31 hours – WSSC issues Mandatory Water Restrictions for Montgomery and Prince George’s Counties

    • July 25, 23:10 hours – MCPS cancels all activities for Monday July 26.

    • July 26, 00:00 hours - East County Recreation Center Shelter opens at midnight

      • Richard Montgomery H.S. launched as special needs shelter with Seneca Valley H.S. launched as general population shelter.

    • July 26 - Montgomery College Closes Rockville Campus

    • July 26 - Cancellation of all Montgomery County Parks and Recreation programs and Montgomery County Public School activities for Mon., July 26

    • July 26 – Montgomery County Libraries close facilities impacted by power outage


Current status
Current Status

  • As of late afternoon, July 26, water restrictions were lifted and citizens were permitted to resume normal water usage

  • 107,000 outages as of 8:00 am

  • All Substations back on line

  • 57 feeders locked out

  • 22 Montgomery County Facilities without power

  • 55 road closures due to downed trees or wires

  • 130 signals without power

  • Richard Montgomery open as a shelter for residents

  • Additional power restoration equipment in place



Next steps
Next Steps

  • Continued Emergency Operation Center, Storm Operation Center and 24/7 311 Operations activities

  • Continued Shelter Operations and monitor based on community need

  • Food Safety/Restaurants

  • Continuity Planning for impacted county services

  • Coordinate roadway openings / power restoration

  • Develop After Action Report


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