Weekly Highlights of Solar and Geomagnetic Activity, 08 - 14 August 2016
 

:Product: Weekly Highlights and Forecasts
:Issued: 2016 Aug 15 0115 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/weekly.html
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
08 - 14 August 2016

Solar activity was at very low to low levels with C-class activity
observed on 08, 09, 11 and 14 Aug. Region 2574 (N05, L=173,
class/area Dho/290 on 09 Aug) was the most active region recording
six C-class flares. The largest of these was a C8/Sf observed at
09/0042 UTC. Regions 2571 (N13, L=268, class/area Dac/200 on 08 Aug)
and 2572 (N13, L=320, class/area Dao/110 on 07 Aug) each produced
weak C-class flares on 08 Aug. The period ended with a C1 flare
observed at 14/1936 UTC from an unnumbered region on the NE limb. A
few CMEs were observed during the period, but none had an
Earth-directed component.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
high levels throughout the summary period. A maximum of 12,032 pfu
was observed at 13/1745 UTC.

Geomagnetic field activity was at quiet to active levels on 08 Aug
through early on 12 Aug due to effects from a positive polarity CH
HSS. Quiet levels were observed for the remainder of the period.
Solar wind speeds reached a maximum speed of about 675 km/s at
10/0830 UTC. Bt ranged between 3-8 nT while the Bz component varied
between +7 to -5 nT early in the period. The phi angle was in a
predominately positive sector throughout the period.

Forecast of Solar and Geomagnetic Activity
15 August - 10 September 2016

Solar activity is expected to be very low with a chance for C-class
activity through 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 at high levels on 15, 19-23, 26-28, 31 Aug and 01-10
Sep. Normal to moderate levels are expected for the remainder of the
outlook period.

Geomagnetic field activity is expected to be at G1 (Minor) storm
levels on 16 and 30-31 Aug due to recurrent CH HSS activity.
Unsettled to active levels are expected on 15, 17-19, 24-25 Aug and
01-08 Sep, all due to recurrent CH HSS activity. Mostly quiet
conditions are expected for the remainder of the outlook period.