Archives for April 2008


Illinois Earthquake - April 18, 2008

This rare early-morning post is brought to you courtesy of the 5.2 magnitude earthquake which woke us up today at 4:37 AM in Chicago.

Here is the live map update of the USGS intensity report, based on questionnaire responses:

Illinois Earthquake - April 18, 2008

The earthquake from a sailing perspective-

Boats already in the harbor should be safe – no tsunami has been reported. Boats on land stored in shock-proof cradles should also be OK.

North Sails Weather Forecast

Interestingly, the North Sails Event Weather Service listserver sent an empty email out to recipients within a few minutes after the earthquake. Note the tell-tale signature 1970 timestamp, an artifact which indicates the host computer time had reset or otherwise been lost, such as waking up from a power outage or other unplanned restart, very likely a direct result of today’s earthquake.

UPDATE 10:19 AM – Aftershock!

Aftershock tremors rumbled buildings again here in Chicago around 10:16 AM. Loose objects mysteriously rattled eerily for a few moments, as if haunted by ghostly poltergeists, and settled down with no evidence or damage remaining. Still, the aftershock also measured a considerable 4.6 magnitude.

18 April 2008 | Boating Disasters, Safety, Weather | No Comments

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