Product: Weekly Highlights and Forecasts
:Issued: 2018 Jun 25 0343 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact http://www.swpc.noaa.gov/weekly.html
#
# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity 18 - 24 June 2018
Solar activity was at predominately very low levels with an isolated C2/Sf flare observed at 21/0115 UTC from Region 2715 (N08, L=231, class/area Dac/120 on 23 Jun). This region, as well as Region 2713 (N05, L=289, class/area Dao/070 on 23 Jun), also produced numerous B-class flares during the period. No Earth-directed CMEs were observed during the period.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at normal levels on 18 and 23 Jun and moderate levels on 19-22 Jun. High levels were reached on 24 Jun in response to an enhanced solar wind environment.
Geomagnetic field activity generally ranged from quiet to active levels with an isolated G1 (Minor) storm period observed early on 18 Jun. The period began under the influence of a waning, positive
polarity CH HSS. Wind speeds peaked at 525-540 km/s early to midday on 18 Jun with the Bz component variable between +16 nT to -9 nT. On 18 Jun through midday on 19 Jun, field conditions ranged from quiet to isolated G1 geomagnetic storm conditions. From midday 19 Jun through early on 23 Jun, solar wind parameters were at mostly nominal levels with a quiet geomagnetic field.
Early on 23 Jun, solar wind parameters indicated a weak CIR signature in advance of another positve polarity CH HSS. Wind speeds gradually increased from about 325 km/s to a peak of near 515 km/s
by the end of 23 Jun. Total field strength peaked at 15 nT midday on 23 Jun while the Bz component varied between +12 nT to -15 nT through midday on the 23rd before relaxing to a variable +/-9 nT
through the summary end. Field conditions responded with quiet to active conditions on 23 Jun and quiet to isolated unsettled conditions on 24 Jun.
Forecast of Solar and Geomagnetic Activity 25 June - 21 July 2018
Solar activity is expected to be at predominately very low levels with a chance for C-class flare activity on 25-28 Jun until Region 2715 rotates off the visible disk. Very low levels are expected from
29 Jun - 10 Jul. With the return of old Region 2715 on 11 Jul, very low levels, with a chance for C-class flare activity, is expected through the remainder of the outlook period.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be be at high levels on 25-26 Jun and 28 Jun - 10 Jul due to CH HSS influence. Normal to moderate levels are expected for
the remainder of the outlook period.
Geomagnetic field activity is expected to be at unsettled to active levels on 25-30 Jun, 15 Jul and 20-21 Jul with G1 (Minor) storm levels expected on 27-28 Jun, all due to recurrent CH HSS activity.
o proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be be at high levels on 25-26 Jun and 28 Jun - 10 Jul due to CH HSS influence. Normal to moderate levels are expected for
the remainder of the outlook period.
Geomagnetic field activity is expected to be at unsettled to active levels on 25-30 Jun, 15 Jul and 20-21 Jul with G1 (Minor) storm levels expected on 27-28 Jun, all due to recurrent CH HSS activity.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2018 Jun 25 0343 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact: http://www.swpc.noaa.gov/wwire.html
#
# 27-day Space Weather Outlook Table
# Issued 2018-06-25
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2018 Jun 25 75 8 3
2018 Jun 26 72 10 4
2018 Jun 27 72 25 5
2018 Jun 28 70 18 5
2018 Jun 29 68 12 4
2018 Jun 30 68 8 3
2018 Jul 01 68 5 2
2018 Jul 02 68 5 2
2018 Jul 03 68 5 2
2018 Jul 04 68 5 2
2018 Jul 05 68 5 2
2018 Jul 06 68 5 2
2018 Jul 07 72 5 2
2018 Jul 08 72 5 2
2018 Jul 09 72 5 2
2018 Jul 10 72 5 2
2018 Jul 11 72 5 2
2018 Jul 12 72 5 2
2018 Jul 13 72 5 2
2018 Jul 14 75 5 2
2018 Jul 15 75 15 4
2018 Jul 16 77 5 2
2018 Jul 17 80 5 2
2018 Jul 18 80 5 2
2018 Jul 19 80 5 2
2018 Jul 20 77 15 4
2018 Jul 21 77 8 3
(NOAA)