Pages

Monday, October 18, 2021

Weekly Propagation Forecast Bulletins

 


Product: Weekly Highlights and Forecasts
:Issued: 2021 Oct 18 0131 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact www.swpc.noaa.gov/content/subscription-services
#
#                Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity 11 - 17 October 2021

Solar activity was very low with B-class flare activity on 11-12, and 15-17 Oct. Low levels of solar activity were observed on 13-14 Oct due to C-class flare activity. Region 2885 (N15, L=171, class/area=Cro/20 on 13 Oct) produced three C-class flares this period: a C1/Sf flare at 13/2204 UTC, a C2 flare at 14/0134 UTC, and a C1flare at 14/0304 UTC. 

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was normal to moderate throughout the period. 

Geomagnetic field activity reached G1-G2 (Minor-Moderate) geomagnetic storm levels on 12 Oct due to the passage of a CME from 09 Oct. Quiet to active conditions were observed on 17 Oct, also due to the passage of a transient feature. Quiet to unsettled conditions were observed on 11, 13, and16 Oct, while quiet conditions were observed throughout the remainder of the period. 

Forecast of Solar and Geomagnetic Activity 18 October - 13 November 2021

Solar activity is expected to be very low to low 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 reach high levels on 26-28 Oct. Normal to moderate flux levels are expected to continue.  

Geomagnetic field activity is expected to reach active levels on 18-19 Oct, and 06 Nov due to the influence of multiple, recurrent CH HSSs. The remainder of the outlook period is expected to be mostly quiet or quiet to unsettled. 

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2021 Oct 18 0131 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact www.swpc.noaa.gov/content/subscription-services
#
#      27-day Space Weather Outlook Table
#                Issued 2021-10-18
#
#   UTC      Radio Flux   Planetary   Largest
#  Date       10.7 cm      A Index    Kp Index
2021 Oct 18      78          12          4
2021 Oct 19      80          12          4
2021 Oct 20      80           8          3
2021 Oct 21      80           8          3
2021 Oct 22      80           8          3
2021 Oct 23      80           5          2
2021 Oct 24      80           5          2
2021 Oct 25      85          10         3
2021 Oct 26      90           5          2
2021 Oct 27      95           5          2
2021 Oct 28      90           5          2
2021 Oct 29      88           5          2
2021 Oct 30      88           5          2
2021 Oct 31      85           5          2
2021 Nov 01      85           5          2
2021 Nov 02      85           8          3
2021 Nov 03      85           5          2
2021 Nov 04      85           5          2
2021 Nov 05      85           5          2
2021 Nov 06      85          12         4
2021 Nov 07      85          10         3
2021 Nov 08      85           8          3
2021 Nov 09      85           5          2
2021 Nov 10      85           5          2
2021 Nov 11      85           5          2
2021 Nov 12      80           5          2
2021 Nov 13      80           5          2
(NOAA)