#Seismograph at Heflin AL starting to show increased ground noise Sunday 01 Sep, as hurricane #Dorian continues westward movement toward USA eastern seaboard @spann@simpson
New #earthquake INDONESIA M7.3 07/14/2019 4:10:50 am CT, focal depth 6.2 mi, USGS report https://t.co/EfdMhAbube - recorded at Heflin AL seismic station, peak local vertical ground movement: 153 um at 75 min after quake @spann @simpsonwhnt
New #earthquake M7.1 near Ridgecrest CALIFORNIA 07/05/2019 10:19:52pm CT, focal depth 10.6 mi - USGS report https://t.co/wSAwZqFwxw - recorded at Heflin AL seismic station, peak vertical ground motion 647um seen 17 min after quake @spann @simpsonwhnt
#Earthquake - CALIFORNIA - M6.4, 04 July 2019, 12:33pm CT - focal depth 5.4 mi - USGS report https://t.co/GO67yrxo4n - at Heflin AL seismic station: peak vertical ground movement of 133um seen 17 min after quake @spann @simpsonwhnt
New Earthquake PERU M8.0 - 5/26/2019, 2:41 am CDT - focal depth 68 mi - USGS report https://t.co/3SZI3nCGgI - recorded at Heflin Alabama seismic station @spann @simpsonwhnt
#Earthquake, M7.0, 8 mi north of Anchorage ALASKA, 11/30/2018 11:29:28a CT, focal depth 25 mi, USGS report https://t.co/NPaEzqth6Z, 338um peak vertical ground movement seen 28 min later at Heflin AL seismic station @spann @simpsonwhnt
Here Comes #Michael - 10/10/2018 11:45aCT snapshot of Heflin AL seismograph latest 18-hr raw unfiltered data shows increasing #microseismic ground noise in east central Alabama as #HurricaneMichael nears landfall on Florida gulf coast. @spann @simpsonwhnt
@bcarmoncolvin @spann @simpsonwhnt The seismogram is a display of ground movement velocity here in Heflin AL, caused by seismic waves radiating out from the quake along the earth's surface. The calculated peak ground movement here was 155 um (micrometers) vertical.
#Earthquake - M7.5 near Palu, INDONESIA, 09/28/2018, 5:02a CT, focal depth 6.2 mi, USGS report https://t.co/cvbdo9eSn6, Heflin AL seismic station detected, with peak surface waves seen locally approx 111 minutes after event time @spann @simpsonwhnt
#Florence making landfall - 09/14/2018 6:45a CT snapshot of Heflin AL seismograph latest 18-hr raw unfiltered data shows microseismic ground noise level has stabilized in east Alabama as hurricane #Florence wind/waves strength may be no longer increasing @spann @simpsonwhnt
Here Comes #Florence - 09/13/2018 3:45p CT snapshot of Heflin AL seismograph latest 18-hr raw unfiltered data shows #microseismic ground noise increasing in East Alabama as hurricane #Florence approaches landfall along USA east coast. @spann @simpsonwhnt