Routine Space Environment Product Issued Weekly
Issued by NWS

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FXXX06 KWNP 180355

:Product: 7-day Space Weather Highlights
:Issued: 2017 Dec 18 0340 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
11 - 17 December 2017

Solar activity was quiet throughout the entire reporting period. The
strongest event was a B6 flare from a plage region on the E. limb at
11/0052 UTC. A filament was observed in SDO/AIA 304 imagery lifting
off of the SE quadrant, near S25E47, at approximately 15/1229 UTC.
The event was modeled using WSA/Enlil which suggested the potential
for the periphery of the CME to become geoeffective around 19 Dec.
No additional Earth-directed CMEs were observed.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal to high levels on 11 and 17 Dec, normal to moderate levels
were observed on 12 and 13 Dec and moderate levels were observed on
14-16 Dec. A maximum flux of 2,300 pfu was observed at 11/0000 UTC.

Geomagnetic field activity ranged from quiet to G1 (Minor), mostly
due to CH HSS influence, during the reporting period. Quiet levels
were observed on 15-16 Dec; quiet to unsettled levels were observed
on 11 and 13-14 Dec; quiet to active levels were observed on 12 Dec;
the peak levels of quiet to G1 (Minor) levels were observed 17 Dec. is the U.S. government's official web portal to all federal, state and local government web resources and services.