City Manager Update #7 – Schools closed Monday and more

From an email:

This morning’s 1000 City Manager’s update on Hurricane Sandy’s observed and projected impacts to Virginia Beach remain reasonably consistent with our last two updates.

Our most significant issue remains tidal stacking within the Lynnhaven and Elizabeth River basins creating a high risk for low level residential flooding. This morning’s high tide within the Lynnhaven was as predicted @ 2 -2 ½ feet above normal. We observed road inundation in many of the waterfront low lying areas within the Lynnhaven and Rudee basins. We will be closely monitoring the endangered neighborhoods and we are continuing our use of Reverse 911 VB Alert system to notify residents of the risk in those specific neighborhoods. The results of these efforts are being posted on our Hurricane Sandy webpage. Staff continues developing Sandy specific inundation maps to better identify impacts. The number of above high/low tide cycles stacking within the Lynnhaven, Elizabeth and Rudee basin leads us to project that properties whose elevation is below 6 feet above sea level are at great risk to tidal inundation. We remain confident the Historical Tidal & Surge Chart is projecting where Sandy’s high tide elevations above Mean Low Water Level will be in relation to our previous storms. This additional information is being posted on our VBgov website.

Sustained wind projections have increased slightly but still will not reach hurricane force and sustained tropical force winds (39-74mph) may be reached. We do however anticipate tropical force gusts that may occasionally reach 60 mph. As the storm remains offshore and is hooking around VB we will begin to experience consistent wind this afternoon. The extended severity of this nor’eastercane will set in early this afternoon and remain consistent thru tomorrow afternoon. Dom Power reported customer outages has grown to 2500.

Storm surge poses our third threat. Atlantic wave height projection has grown to +15 feet; Bay wave height has grown to 9 feet. Beach erosion will definitely be significant. This morning’s waves on high tide lapped at the base of the Grommet Park berm.

Rain is our 4th threat. Some areas of the City may receive up to 7 inches. This is a slight increase in the projection. Surface ponding will occur as runoff will be hindered due to elevated levels of the Lynnhaven, Elizabeth and North Landing Rivers. Back Bay is seeing significant low levels based on the northerly winds pushing the water south and out to the Currituck. Storm water crews are responding to ponding issues. The police are bringing in additional assets to assist in high water traffic control. We are working on a reporting tool to post this data on the Hurricane Sandy webpage

Duration of Sandy continues to make this storm a significant event. Weather conditions continue to deteriorate and stretch into the new work week. The most intense period of the storm has lengthened and is projected to be Sunday afternoon thru Tuesday early morning. During this intense period will see sustained winds just touching the threshold for tropical storms.

Decisions made at this morning’s meeting:

· The Birdneck ES shelter opened on time this morning at 10AM.

· The EOC will operate under a partial activation effective 1200 (noon) today.

· City services and staffing will operate under essential conditions beginning 0600 Monday until further notice.

· VB Public Schools have just notified the EOC they will be closed Monday.

· The next City Manager staff update is 5PM today.

Will keep you advised. Dave

Emphasis ours.

20121028-133910.jpg
Boat Ramp high tide #1 this morning.

20121028-134010.jpg
Boat Ramp low tide #1

(Note: the tide photos were not necessarily taken at peak hi and peak lo)

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