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I0OJJ > DX 22.02.22 11:03l 70 Lines 3291 Bytes #999 (0) @ WW
BID : 62186I0OJJ
Read: DJ6UX GUEST
Subj: Weekly Highlights of Solar and Geomagnetic Activity, 14 - 20
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Sent: 220221/1840z @:I0OJJ.ITA.EU [Rome] $:62186I0OJJ
:Product: Weekly Highlights and Forecasts
:Issued: 2022 Feb 21 0202 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# https://www.swpc.noaa.gov/content/subscription-services
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
14 - 20 February 2022
Solar activity ranged from very low to to moderate. Region 2941
(N24, L=337, class/area=Eki/370 on 10 Feb) produced both M-class
(R1-Minor) events during the period, an M1/Sf at 14/1731 UTC and an
M1/Sf at 15/1815 UTC. The region was the most complex on the visible
disk during the past week and all significant activity was produced
as it was rotating around the NW limb. Following its exit from the
visible disk, a Type II radio sweep was observed from CME produced
from the vicinity of the region on 18 Feb. The remaining regions on
the visible disk produced only isolated low-level C-class activity
and were magnetically simple.
No proton events were observed at geosynchronous orbit. A very weak
enhancement in the 10 MeV proton flux (well below the S1 threshold)
was observed on 16 Feb and an additional one on 18 Feb. The weak
enhancements were likely associated with activity on the far-side of
the Sun.
The greater than 2 MeV electron flux at geosynchronous orbit ranged
from normal to high levels. High levels were observed on 14-18 Feb.
Elevated geomagnetic activity on 19-20 Feb decreased the flux to
normal-moderate levels.
Geomagnetic field activity was at quiet to G1 (Minor) geomagnetic
storm levels. During the onset of a positive polarity CH HSS, an
isolated period of G1 was observed during the 20/0000-0300 UTC
synoptic period. Total magnetic field strength reached a peak of 12
nT while the Bz component rotated as far south as -11 nT at 20/0115
UTC. Solar wind speeds increased to between 500-550 km/s and
remained elevated through the end of the reporting period. Outside
of that activity, unsettled conditions were only observed on 16 Feb
and early on 19 Feb. The remainder of the summary period was quiet.
Forecast of Solar and Geomagnetic Activity
21 February - 19 March 2022
Solar activity is likely to be at low levels, with a slight chance
for R1 (Minor) events on 21-23 Feb, from 21 Feb to 06 Mar due to
flare potential from regions of flux near and just beyond the E
limb. Very low levels are expected from 07 Mar-19 Mar.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is
expected to range from normal to high levels. High levels are
expected on 21-25 Feb, 04-10 Mar and 12-17 Mar. Elevated levels of
electron flux are anticipated due to multiple, recurrent CH HSSs.
The remainder of the outlook period is expected to be at normal to
moderate levels.
Geomagnetic field activity is expected to range from quiet to G1
(Minor) geomagnetic storm levels. G1 conditions are likely on 03-04
Mar, 11 Mar and 19 Mar; active conditions are likely on 21 Feb and
12 Mar; unsettled conditions are likely over 22-23 Feb, 05-06 Mar,
13 Mar and 18 Mar. All elevated levels of geomagnetic activity are
anticipated due to multiple, recurrent CH HSSs. The remainder of the
outlook period is expected to be quiet.
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