Routine Space Environment Product Issued Weekly
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1
000
FXXX06 KWNP 100526
WEKHIL

:Product: 7-day Space Weather Highlights
:Issued: 2021 May 10 0452 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
#
#                7-day Space Weather Highlights
#
Highlights of Solar and Geomagnetic Activity
03 - 09 May 2021

Solar activity was at very low to moderate levels. Region 2822 (N18,
L=335, class/area Dsi/180 on 09 May) rotated onto the visible disk
on 07 May and produced an M3/1n flare at 07/1904 UTC. Associated
with this flare were type II (816 km/s) and Type IV radio sweeps as
well as a non-Earth directed CME. C-class flares were observed on
08-09 May, including a long duration C2/Sf flare at 09/1449 UTC with
an associated Type II (407 km/s) radio sweep and another CME
beginning at 09/1436 UTC in SOHO/LASCO C2 imagery. A faint,
partial-halo CME was also observed on 09 May associated with a 15
degree filament eruption centered near S22E10. The CME was first
observed in C2 imagery beginning at 09/1124 UTC. The two CMEs from
09 May are being analyzed at the time of this report with the
potential for at least one having an Earth-directed component.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal to moderate levels through the period.

Solar wind parameters were weakly enhanced on 03-05 May under a
positive polarity CH HSS. Solar wind speed increased to a maximum of
498 km/s at 03/2351 UTC while total field reached a maximum of 13 nT
at 03/0500 UTC. The Bz component was mostly positive during this
time resulting in quiet conditions. By midday on 05 May, solar wind
speed had decreased to under 350 km/s and remained so through 09
May. Quiet conditions were observed for the rest of the period.


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.