Costa Rica Quake Measured In Huntsville
A strong magnitude 7.6 earthquake struck this morning at 14:42:10 UTC (9:42:10 am CDT) in western Costa Rica at a location approximately 2719 km (1690 mi) from Huntsville. The quake focus was estimated at 40.8 km (25.4 mi) beneath the earth’s surface. There have been news reports of damages and utilities outages, and one fatality, in the area local to the quake epicenter.
In Huntsville, the initial seismic P (primary, compressional) waves began arriving some 5.5 minutes after the quake struck, followed by the initial S (secondary, shear) waves at +10 minutes. The larger, slower, surface waves began their arrival approximately 12 minutes after the quake, with a peak vertical ground movement of 1.5 millimeters (mm) measured at the AlabamaQuake seismic station during the surface wave passage. This is the largest ground displacement recorded in recent history at AlabamaQuake.
The local seismogram and quake epicenter location map have been posted to the AlabamaQuake website (https://alabamaquake.com) on the “Huntsville Seismograms” and “Recent Earthquake Maps” pages, and have been attached to this message.
Please let me know if you have any question or comment, either by a reply to this message, or by posting an update on the AlabamaQuake discussion blog at https://www.facebook.com/alabamaquake.
Category: Hodgepodge
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James Spann is one of the most recognized and trusted television meteorologists in the industry. He holds the AMS CCM designation and television seals from the AMS and NWA. He is a past winner of the Broadcast Meteorologist of the Year from both professional organizations.Subscribe
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