The Bz component of the interplanetary magnetic field (IMF) has been pointing south for the past several hours on Friday and this is helping to disturb the geomagnetic field (Kp4). A further increase to minor (G1) geomagnetic storming will be possible during the next 24 hours as a coronal hole stream is now beginning to flow past Earth. Aurora sky watchers at higher latitudes should be alert.
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2021 Feb 19 2015 UTC
Valid To: 2021 Feb 20 0300 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor