:Product: Weekly Highlights and Forecasts
:Issued: 2017 Aug 14 0316 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 07 - 13 August 2017
Solar activity was very low. Region 2670
(S05, L=119, class/area
Cso/160 on 02 Aug) continued it transit across the
visible disk
during the period as a simple Hsx/alpha spot group with no
flaring
activity observed. No Earth-directed coronal mass ejections
were
observed.
No proton events were observed at geosynchronous
orbit.
The greater than 2 MeV electron flux at geosynchronous orbit
reached
high levels from 07-11 Aug with a peak flux of 11,301 pfu
observed
at 07/1440 UTC. Electron flux values decreased to normal to
moderate
levels on 12-13 Aug due to the arrival of a negative
polarity
coronal hole high speed stream (CH HSS).
Geomagnetic field
activity ranged from quiet to unsettled levels
during the period. Solar wind
speed was in decline at the beginning
of the period from a waning positive
polarity CH HSS. Solar wind
speeds declined from near 570 km/s early in the
period to nominal
levels by late on 08 Aug. Total field ranged from 2-6 nT
through 10
Aug. On 11 Aug, total field and solar wind began to increase as
a
negative polarity CH HSS became geoeffective. Total field increased
to a
maximum of 12 nT at 12/0135 UTC while solar wind increased to
around 650 km/s
by 13/1750 UTC. The geomagnetic field responded with
quiet levels from 07-10
Aug and quiet to unsettled levels from 11-12
Aug. Geomagnetic activity
decreased to quiet levels again on 13 Aug.
FORECAST OF SOLAR AND
GEOMAGNETIC ACTIVITY 14 AUGUST-09 SEPTEMBER 2017
Solar activity is
expected to be at very low levels. A chance for
C-class flare activity is
possible from 14-28 Aug as a new active
region rotates across the visible
disk.
No proton events are expected at geosynchronous orbit.
The
greater than 2 MeV electron flux at geosynchronous orbit is
expected to reach
high levels from 14-16, 18-30 Aug and again from
01-07 Sep due to CH HSS
influence. Normal to moderate levels are
expected on 17, 31 Aug and again on
08-09 Sep.
Geomagnetic field activity is expected to be reach unsettled
to
active levels on 14, 16-22, 30-31 Aug and from 01-02 and 08-09 Sep
with
G1 (Minor) geomagnetic storm levels are likely on 17-18 and 31
Aug due to
recurrent CH HSS activity.
:Product: 27-day Space Weather Outlook Table
27DO.txt
:Issued: 2017 Aug 14 0316 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/wwire.html
#
#
27-day Space Weather Outlook Table
# Issued
2017-08-14
#
# UTC Radio Flux Planetary Largest
#
Date 10.7 cm A Index Kp Index
2017 Aug 14 68
8 3
2017 Aug 15 68 5 2
2017 Aug 16
68 10 3
2017 Aug 17 68 20 5
2017
Aug 18 68 25 5
2017 Aug 19 68
15 4
2017 Aug 20 68 12 4
2017 Aug 21
68 10 3
2017 Aug 22 68 8 3
2017
Aug 23 68 6 2
2017 Aug 24 68
5 2
2017 Aug 25 68 5 2
2017 Aug 26
68 5 2
2017 Aug 27 68 5 2
2017
Aug 28 68 5 2
2017 Aug 29 70
5 2
2017 Aug 30 72 12 4
2017 Aug 31
72 24 5
2017 Sep 01 72 18 4
2017
Sep 02 72 14 4
2017 Sep 03 72
5 2
2017 Sep 04 72 5 2
2017 Sep 05
72 5 2
2017 Sep 06 72 5 2
2017
Sep 07 72 5 2
2017 Sep 08 72
10 3
2017 Sep 09 70 8 3
(SWPC via
DXLD)
