Monday, April 22, 2019

Weekly Propagation Forecast Bulletins



Product: Weekly Highlights and Forecasts
:Issued: 2019 Apr 22 0049 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 15 - 21 April 2019

Solar activity was very low throughout the period. Region 2738 (N06, L=301, class/area-Hhx/400 on 17 Apr) produced several B-class events including a B8 flare at 20/0050 UTC. Region 2739 (N05, L=258, class/area-Cro/20 on 18 Apr) was inactive and stable during its migration across the solar disk. No Earth-directed coronal mass ejections (CMEs) were observed.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 15 April with moderate levels observed throughout the remainder of the reporting period.

Geomagnetic field activity reached unsettled levels on 15-16 April due to coronal hole high-speed stream (CH HSS) influence. Quiet conditions were observed throughout the remainder of the reporting period.

Forecast of Solar and Geomagnetic Activity 22 April - 18 May 2019

Solar activity is expected to be very 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 02-12 May with normal to moderate levels expected throughout the remainder of the outlook period.

Geomagnetic field activity is expected to reach active levels on 27 April and 01-02, 07 May in response to several recurrent, negative-polarity CH HSSs. Quiet to unsettled levels are expected to be throughout the remainder of the outlook period.

Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2019 Apr 22 0049 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 2019-04-22
#
#   UTC      Radio Flux   Planetary   Largest
#  Date       10.7 cm      A Index    Kp Index
2019 Apr 22      69           5          2
2019 Apr 23      69           8          3
2019 Apr 24      69           8          3
2019 Apr 25      69           8          3
2019 Apr 26      69           5          2
2019 Apr 27      69          12          4
2019 Apr 28      69           8          3
2019 Apr 29      69           5          2
2019 Apr 30      69          10          3
2019 May 01      69          14          4
2019 May 02      69          12          4
2019 May 03      72           8          3
2019 May 04      76           5          2
2019 May 05      76          10          3
2019 May 06      77          12          3
2019 May 07      78          14          4
2019 May 08      78           8          3
2019 May 09      78           8          3
2019 May 10      78           8          3
2019 May 11      78           5          2
2019 May 12      78           5          2
2019 May 13      78           5          2
2019 May 14      78           5          2
2019 May 15      78           5          2
2019 May 16      78           5          2
2019 May 17      76           5          2
2019 May 18      72           5          2
(NOAA)