Weekly Space Weather Highlights

Highlights of Solar and Geomagnetic Activity
22 - 28 February 2021

Solar activity reached low levels with C-class flare activity.
Region 2804 (N21, L=309, class/area=Dso/190 on 27 Feb) produced the
only two C-class flares observed this period. The first was a C2/Sf
flare oberseved at 27/1800 UTC and the second was a C3/Sf flare
observed at 28/0646 UTC. Both C-class flares were associated with
narrow CME signatures that were directed away from the Sun-Earth

A CME associated with a filament eruption in the SE quadrant on
20/1200 UTC (in LASCO C2 imagery) arrived in conjunction with
coronal hole/high speed stream influences, with the effects of both
features observed over 24-26 Feb. 

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was
moderate on 25 Feb, and high throughout the remainder of the period. 

Geomagnetic field activity was quiet on 27 Feb and quiet to
unsettled on 26 and 28 Feb. Quiet to active conditions were observed
on 22-26 Feb due to a combination of negative polarity CH HSS
influence and the arrival of the 20 Feb CME. 

Forecast of Solar and Geomagnetic Activity
01 March - 27 March 2021

Solar activity is expected to be very low-to-low throughout the
outlook period. 

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be moderate on 10-19 Mar. High levels are expected on
01-09, and 20-27 Mar. 

Geomagnetic field activity is expected to reach active levels on 02,
06, 12-13, 15, and 21-22 Mar, with G1 (Minor) geomagnetic storm
conditions likely on 02 and 18-19 Mar, all due to recurrent CH HSSs.
Mostly quiet and quiet to unsettled conditions are expected to
prevail throughout the outlook period.