:Product: Weekly Highlights and Forecasts
:Issued: 2020 Oct 26 0405 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
19 - 25 October 2020
Solar activity was very low with only B-class flare activity
observed primarily from Region 2776 (S14, L=162, class/area Cso/100
on 18 Oct). No 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 moderate levels on 19-24 Oct. High levels were reached on
25 Oct due to coronal hole high speed stream (CH HSS) influence. The
maximum flux was 5,670 pfu observed at 25/1845 UTC.
Geomagnetic field activity ranged from quiet to active levels. Solar
wind parameters were at or near nominal levels on 19-22 Oct with
solar wind speed ranging from 327-450 km/s and total field from 1-10
nT. The geomagnetic field was at quiet levels on 20 Oct, quiet to
unsettled levels on 19 and 22 Oct, and isolated active levels were
observed on 21 Oct. By 23 Oct, a positive polarity CH HSS became
geoeffective. Solar wind speed increased to a maximum near 595 km/s
while total field initially increased to 15 nT. The geomagnetic
field responded with quiet to active levels on 23-25 Oct.
Forecast of Solar and Geomagnetic Activity
26 October - 21 November 2020
Solar activity is expected to be at very low levels with a slight
chance for C-class flares on 26 Oct - 01 Nov as new Region 2778
(S19, L=088, class/area Cai/080 on 26 Oct) rotates across the
visible disk. Very low levels are expected on 02-21 Nov.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at normal to moderate levels on 02-20 Nov. High
levels are expected on 26 Oct - 01 Nov and again on 21 Nov due to CH
HSS influences.
Geomagnetic field activity is expected to be reach unsettled to
active levels on 26-29 Oct, 01 Nov, and 17-21 Nov with G1 (Minor)
geomagnetic storm levels likely on 26 Oct due to recurrent CH HSS
effects.
:Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2020 Oct 26 0405 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 2020-10-26
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2020 Oct 26 74 20 5
2020 Oct 27 72 15 4
2020 Oct 28 70 10 3
2020 Oct 29 70 8 3
2020 Oct 30 70 5 2
2020 Oct 31 72 5 2
2020 Nov 01 74 8 3
2020 Nov 02 74 5 2
2020 Nov 03 74 5 2
2020 Nov 04 74 5 2
2020 Nov 05 74 5 2
2020 Nov 06 74 5 2
2020 Nov 07 74 5 2
2020 Nov 08 75 5 2
2020 Nov 09 75 5 2
2020 Nov 10 75 5 2
2020 Nov 11 75 5 2
2020 Nov 12 75 5 2
2020 Nov 13 72 5 2
2020 Nov 14 70 5 2
2020 Nov 15 70 5 2
2020 Nov 16 70 5 2
2020 Nov 17 70 10 3
2020 Nov 18 70 8 3
2020 Nov 19 70 12 4
2020 Nov 20 70 18 4
2020 Nov 21 68 15 4
lunedì 26 ottobre 2020
Propagation outlook from SWPC Boulder
