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Propagation outlook from SWPC Boulder

:Product: Weekly Highlights and Forecasts
:Issued: 2020 Sep 07 0121 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
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
31 August – 06 September 2020

Solar activity was very low for the highlight period. No spotted
regions were present on the visible disk. There were no
Earth-directed CMEs observed during the period.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
moderate to high levels through the highlight period. A peak flux of
29,370 pfu was observed at 02/1625 UTC.

Geomagnetic field activity was at unsettled to G1 (minor) storm
levels on 31 Aug, unsettled to active levels on 01 Sep and quiet to
unsettled levels on 02 Sep; all due to positive polarity CH HSS
influences. During this period of activity, solar wind speeds
reached a peak of 619 km/s midday on 01 Sep, total field reached a
maximum of 8 nT midday on 31 Aug and the Bz component reached a
maximum southward extent of -7 nT midday on 31 Aug. Phi angle was in
a mostly positive solar sector.

Quiet to isolated unsettled levels were observed from 03-06 Sep as
CH HSS effects slowly waned. Solar wind parameters gradually
returned to nominal levels by the end of the highlight period.

Forecast of Solar and Geomagnetic Activity
07 September – 03 October 2020

Solar activity is expected to be very low for 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 moderate to high levels on 07-09 Sep and again on
26 Sep – 03 Oct due to recurrent CH HSS influence. The remainder of
the period is expected to be at normal to moderate levels.

Geomagnetic field activity is expected to be at unsettled levels on
18-19 Sep, unsettled to active levels on 23-29 Sep, with G1 (minor)
storm levels possible on 27 sep, all due to recurrent CH HSS
influences. The remainder of the outlook period is expected to be at
mostly quiet levels.

:Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2020 Sep 07 0121 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
#
# 27-day Space Weather Outlook Table
# Issued 2020-09-07
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2020 Sep 07 70 5 2
2020 Sep 08 70 5 2
2020 Sep 09 70 5 2
2020 Sep 10 70 5 2
2020 Sep 11 70 5 2
2020 Sep 12 70 5 2
2020 Sep 13 70 5 2
2020 Sep 14 70 5 2
2020 Sep 15 70 5 2
2020 Sep 16 70 5 2
2020 Sep 17 70 5 2
2020 Sep 18 70 8 3
2020 Sep 19 70 8 3
2020 Sep 20 70 5 2
2020 Sep 21 70 5 2
2020 Sep 22 70 5 2
2020 Sep 23 70 8 3
2020 Sep 24 70 10 3
2020 Sep 25 70 15 4
2020 Sep 26 70 10 4
2020 Sep 27 70 25 5
2020 Sep 28 70 15 4
2020 Sep 29 70 10 3
2020 Sep 30 70 5 2
2020 Oct 01 70 8 3
2020 Oct 02 70 5 2
2020 Oct 03 70 5 2

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