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Propagation outlook from SWPC Boulder

:Product: Weekly Highlights and Forecasts
:Issued: 2020 Sep 21 0147 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
14 – 20 September 2020

Solar activity was very low throughout the reporting period. No
spotted regions were observed on the visible disk. No Earth-directed
CMEs were observed in available coronagraph imagery.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal to moderate levels over the reporting period. The peak flux,
as measured by GOES-16, was 289 pfu at 18/1905 UTC.

Geomagnetic field activity ranged from quiet to unsettled. Unsettled
conditions were observed on 14-15 Sep in response to weak
enhancements from positive polarity CH HSS influence. Another
isolated period of unsettled was observed on 18 Sep in response to a
possible weak transient. The remainder of the reporting period was
quiet under nominal solar wind conditions.

Forecast of Solar and Geomagnetic Activity
21 September – 17 October 2020

Solar activity is expected to be at very low levels throughout the
outlook period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to range from normal to high levels. High levels are
anticipated from 26 Sep – 10 Oct in response to a influence from
positive polarity CH HSSs. The remainder of the outlook period is
expected to be at normal to moderate levels.

Geomagnetic field activity is expected to range from quiet to G1
(Minor) geomagnetic storm levels. G1 conditions are likely on 27
Sep; active conditions are likely on 24-25 Sep and 28 Sep; unsettled
conditions are likely on 23 Sep, 26 Sep, 29 Sep and 11 Oct. All
enhancements in geomagnetic activity are due to multiple, positive
polarity CH HSSs. The remainder of the outlook period is expected to
be at quiet levels.

:Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2020 Sep 21 0147 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 2020-09-21
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2020 Sep 21 70 5 2
2020 Sep 22 70 5 2
2020 Sep 23 70 10 3
2020 Sep 24 70 12 4
2020 Sep 25 70 16 4
2020 Sep 26 70 12 3
2020 Sep 27 70 28 5
2020 Sep 28 70 18 4
2020 Sep 29 70 10 3
2020 Sep 30 70 5 2
2020 Oct 01 70 5 2
2020 Oct 02 70 5 2
2020 Oct 03 70 5 2
2020 Oct 04 70 5 2
2020 Oct 05 70 5 2
2020 Oct 06 70 5 2
2020 Oct 07 70 5 2
2020 Oct 08 70 5 2
2020 Oct 09 70 5 2
2020 Oct 10 70 5 2
2020 Oct 11 70 10 3
2020 Oct 12 70 5 2
2020 Oct 13 70 5 2
2020 Oct 14 70 5 2
2020 Oct 15 70 5 2
2020 Oct 16 70 5 2
2020 Oct 17 70 5 2

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