Routine Space Environment Product Issued Weekly
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1
FXXX06 KWNP 230425

:Product: 7-day Space Weather Highlights
:Issued: 2016 May 23 0405 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
#                7-day Space Weather Highlights
Highlights of Solar and Geomagnetic Activity
16 - 22 May 2016

Solar activity was low with only B-class and C-class flare activity
observed. Regions 2544 (N20, L=295, class/area=Dai/160 on 16 May)
and 2546 (S07, L=223, class/area=Cho/550 on 21 May) produced three
low-level C-class flares between them, with the largest being a C1.8
at 16/1525 UTC from Region 2544. No Earth-directed coronal mass
ejections (CME) were observed during the reporting period.

No proton events were observed at geosynchronous orbit. However,
there was a slight enhancement on 16 May from a long duration C3
flare that occured previous to the reporting period. The greater
than 10 MeV proton flux reached a maximum of 1 pfu at 16/0030 UTC.

The greater than 2 MeV electron flux at geosynchronous orbit reached
high levels on 16, 17, and 19 May and moderate levels on 18, 20-22

Geomagnetic field activity was mostly at quiet to unsettled levels
from 16-20 May with an isolated period of active conditions on 17
May in response to a positive polarity coronal hole high speed
stream (CH HSS). G1 (Minor) geomagnetic storm levels were observed
during the 0600-0900 UTC synoptic period on 21 May due to influences
from another positive polarity CH HSS. is the U.S. government's official web portal to all federal, state and local government web resources and services.