Product: Weekly Highlights and Forecasts
:Issued: 2019 Mar 25 0105 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 18 - 24 March 2019
Solar activity was low throughout the period. Region 2736 (N08, L=284, class/area-Eki/420 on 22 Mar) produced multiple C-class events including a C5 flare at 21/0312 UTC. Region 2735 (N03, L=259, class/area-Cro/20 on 19 Mar) provided multiple, low-level, B-class events early in the period before decaying to plage on 22 Mar. An asymmetrical, full-halo CME was observed in SOHO LASCO oronagraph imagery starting at 20/1100 UTC and was determined to have an earth that is a directed component. No additional earth-directed 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 19 and 24 Mar with moderate levels observed throughout the remainder of the reporting period.
Geomagnetic field activity was at quiet to unsettled levels on 19 Mar with quiet conditions observed throughout the remainder of the period, under a nominal solar wind environment. A sudden impulse of the summary was issued at 24/2151 UTC for what is believed to be the arrival of the 20 Mar CME mentioned above. A 17 nT deviation was recorded at the Boulder, Colorado magnetometer.
Forecast of Solar and Geomagnetic Activity 25 March - 20 April 2019
Solar activity is expected to be very low between 25 Mar-07 Apr. Low levels are expected between 08-20 Apr due to the return of Region 2736.
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 27 Mar-07 Apr with normal to moderate levels expected throughout the remainder of the outlook period.
Geomagnetic field activity is expected to reach active levels on 27-28 Mar and 12 Apr due to the influence from multiple, recurrent CH HSSs. Quiet to unsettled levels are expected throughout the remainder of the outlook period.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2019 Mar 25 0105 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 2019-03-25
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2019 Mar 25 73 15 4
2019 Mar 26 71 8 3
2019 Mar 27 70 12 4
2019 Mar 28 70 12 4
2019 Mar 29 70 8 3
2019 Mar 30 70 8 3
2019 Mar 31 70 5 2
2019 Apr 01 70 5 2
2019 Apr 02 70 8 3
2019 Apr 03 70 8 3
2019 Apr 04 70 5 2
2019 Apr 05 70 5 2
2019 Apr 06 70 5 2
2019 Apr 07 71 5 2
2019 Apr 08 74 5 2
2019 Apr 09 75 5 2
2019 Apr 10 75 5 2
2019 Apr 11 75 5 2
2019 Apr 12 75 15 4
2019 Apr 13 75 10 3
2019 Apr 14 75 5 2
2019 Apr 15 75 5 2
2019 Apr 16 75 5 2
2019 Apr 17 75 5 2
2019 Apr 18 75 5 2
2019 Apr 19 74 5 2
2019 Apr 20 72 5 2
(NOAA)