Geomagnetic storms in Philadelphia — Dec 10, 2020
Geomagnetic storms in Philadelphia on Dec 10, 2020
the Earth's magnetosphere was quiet (Kp = 3.00)
Geomagnetic storms in the last 3 days
Changes in the geomagnetic index Kp from December 8 to 10, 2020 for mid latitudes
Location — Philadelphia (geographic coordinates — 40.01 N -75.13 W | time zone UTC-05)

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Geomagnetic storms in Philadelphia in December 2020
Changes in the maximum daily geomagnetic index Kp in December 2020 for mid latitudes
Location — Philadelphia (geographic coordinates — 40.01 N -75.13 W | time zone UTC-05)
geomagnetic storms in November 2020 (Philadelphia)
geomagnetic storms in January 2021 (Philadelphia)

This chart in PNG format — high resolution
API data: JSON or TXT
Other activity indices
Index AP = 8
Index F10.7 = 82