Category Archives: security

NYC Storm Surge Evacuation Map PDF

The NYC Office of Emergency Management website is bogged down a bit already and warns of possible slowdowns.  Here’s a re-post of the hurricane storm surge flooding evacuation map, to help get it out there.  Mayor Bloomberg plans to make … Continue reading

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Hurricane Irene: Parallels with 1821?

[temporary note:  With Irene approaching our area, I’ll mention that it has shown some weakening instead of strengthening on Friday, so it extremely unlikely to have a similar strength or impact to the Hurricane of 1821.  Check the latest updates … Continue reading

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Latest plume forecast for Japan

Future Japan air and water radiation plume updates will continue at a different blog site so change your bookmarks. Predicted plume dispersion over the next 36 hours (through morning of 17 March, Japan Standard Time).  Although the plume was directed … Continue reading

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Airborne plume dispersion in coastal areas

New York City, like most megacities including Tokyo, does not have mechanisms in place to evacuate the population of the entire city.  Even the direst catastrophic scenarios entail a strategy of sheltering in place for at least some of the … Continue reading

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Blast-proofing the PATH tunnels

For the past several months the Port Authority has led a concerted effort to enhance the security of the PATH tunnels that cross beneath the Hudson River.   The four underwater railway tunnels connect New Jersey to lower and midtown Manhattan.  … Continue reading

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Which way would airborne toxic gases blow during a terrorist release?

In the event of a terrorist release of a harmful chemical, biological or radiological (CBR) agent as a weapon in an urban area, the motion of the gas and particles is unpredictable.  Factors that contribute to the complexity of the … Continue reading

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