Greenland Sea – M6.8 – Nov 9, 2018 at 01:49:40 UTC

Position: 71.623°N 11.240°W – Depth: 10.0 km

USGS Information Page

Jamaseis heliocoder trace of AM.RC8C73.00.SHZ (Exton PA), and LD.WUPA.BHZ (West Chester PA). 
Distance: 44.5 Deg. 4,046 km
Azimuth: 260.8 Deg.

Another heliocorder image of R8C73 showing the event. Above the heliocorder is the real-time trace of the quake.

SeisComP3 traces for AM.R8C73.00.SHZ (Exton PA), LD.WUPA.BHZ (West Chester University, West Chester PA) , and PE.PSUB.HHZ (Media PA) showing the P wave arrivals.

Fault Plane Solution for this event showing that the earthquake occurred along a north-south or east-west strike slip fault.

SeisComP3 scmv (map view) display as few minutes after the event. The triangles with red and green borders are stations where Seiscomp has detected and picked a P wave arrival. the color of each triangle indicates ground motion. Note the orange and red triangles in northern Europe and Greenland closest to the epicenter where the ground motion is highest.

Hokkaido, Japan – M5.9 – Nov 4, 2018 at 19:26:03 UTC

Position: 44.564°N 145.594°E – Depth: 8.0 km

USGS Information Page

Jamaseis heliocoder trace of AM.RC8C73.00.SHZ. The P wave arrival is annotated.
Distance: 87.9 Deg. 9,772 km
Azimuth: 30.3.4 Deg.

SeisComP3 P wave arrival traces for AM.R8C73.00.SHZ (Exton PA), LD.WUPA.BHZ (West Chester University, West Chester PA), and PE.PSUB.HHZ (Media PA).

Fault Plane Solution for this earthquake in SeisComP3.

Minandao, Philippines – M6.0 – Nov 4, 2018 at 97:55:29 UTC

Position: 7.805°N 123.872°E – Depth: 598.1 km

USGS Information Page

SeisComP3 traces for AM.R8C73.00.SHZ (Exton PA), LD.WUPA.BHZ (West Chester University, West Chester PA), and PE.PSUB.HHZ (Media PA) showing the P wave arrivals.

Distance:  129.1 Deg, 14,346 km
Azimuth: 19.1 Deg

Fault Plane Solution for this event calculated in SeisComP3.

Local QLCS Tornado Warning – Nov 2, 2018

On November 2, 2018 A strong squall line (QLCS) moved through southeastern Pennsylvania. Strong rotation at places along the leading edge of the line (not uncommon in these systems) resulted in the Mt. Holly NJ NWS Forecast Office to issue two tornado warnings. Although no tornadoes touched down, there was strong rotation as seen in the images below. Despite the tornado warnings, there was no lightning observed as the line move through the area.

This image shows AWIPS II (left panel), and GR2 Analyst (right panel) Storm Relative Motion displays from the Fort Dix NJ Nexrad radar (KDIX). The right panel clearly shows rotation near Limerick PA (red and green next to each other).

GR2 Analyst screenshot showing the strong couplet that generated the tornado warning.

The arrows in the right panel of this image show areas of possible rotation along the leading edge of the squall line.

GR2 Analyst screenshot showing the multiple areas of rotation.

Sea of Okhotsk – M 5.9 – Nov 2, 2018 at 11:01:15 UTC

Position: 47.817°N 146.718°E – Depth: 432.0 km

USGS Information Page

Heliocoder trace of AM.RC8C73.00.SHZ. The P arrival is annotated. Filtered with a 3rd order Butterworth lowpass filter at 1.0 Hz.
Distance: 84.7Deg. 9,417 km
Azimuth: 31.2 Deg.

SeisComP3 traces for AM.R8C73.00.SHZ (Exton PA), LD.WUPA.BHZ (West Chester University, West Chester PA), and LD.GEDE.BHZ (Greenville DE) showing the P wave arrivals. Filtered with a 3rd order Butterworth bandpass filter with corner frequencies of 0.7 and 2 Hz,

This event had a highly impulsive P wave as seen in these unfiltered traces from AM.R8C73.00.SHZ and LD.WUPA.BHZ.

These Jamaseis Heliocorder traces also show the impulsive nature of P waves for this earthquakes. Note that for LD.WUPA.BHZ the P wave amplitude exceeds that of the strongest surface waves.

SeisComP3 scolv display showing the fault plane solution for this event. This varies somewhat from USGS solution, but both show a similar focal mechanism.