Product: Weekly Highlights and Forecasts
:Issued: 2021 Jul 12 0350 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 05 - 11 July 2021
Solar activity was at very low to low levels. Region 2840 (N27, L=034, class/area Bxo/010 on 08 Jul) produced the strongest event of the period, a C7 flare at 09/1050 UTC. A Type II radio sweep, and several other C-class X-ray events, were produced by the region while it was just past the W limb. Region 2835 (S18, L=052, class/area Ekc/770 on 01 Jul) was the largest region of the period, but only produced some low-level C-class activity as it rotated around the SW limb after 06 Jul. The remaining numbered regions on the visible disk were relatively simple and quiet. Of the multiple coronal mass ejections observed during the period, none were determined to have an Earth-directed component.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at normal to moderate levels.
Geomagnetic field activity was quiet to unsettled. Some extended periods of southward Bz were followed by a few isolated unsettled periods on 05-06 Jul. Another period of unsettled was observed on 10 Jul which may have been caused by weak influence from a positive polarity coronal hole that rapidly decayed as it crossed the central meridian of the Sun. The remainder of the reporting period was quiet.
Forecast of Solar and Geomagnetic Activity 12 July - 07 August 2021
Solar activity is expected to be at very low levels throughout the outlook period. There is a chance for elevated activity from old Region 2838 (N24, L=088), Region 2835 (S18, L=068), and Region 2840 (N27, L=045) as they are expected to rotate back onto the visible disk on 16 Jul, 20 Jul, and 21 Jul, respectively.
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 12 Jul and from 19 Jul - 07 Aug. High levels, caused by interaction with a negative polarity CH HSS, is likely for 13-18 Jul.
Geomagnetic field activity is expected to be at quiet to active levels. A negative polarity CH HSS. that is connected to the southern crown coronal hole. is expected to elevate geomagnetic activity to active levels on 12-14 Jul and unsettled levels on 15-16 Jul. A small, positive polarity CH HSS is likely to cause unsettled conditions on 02 Aug. The remainder of the outlook period is expected to be at quiet levels.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2021 Jul 12 0350 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 2021-07-12
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2021 Jul 12 74 12 4
2021 Jul 13 74 16 4
2021 Jul 14 73 12 4
2021 Jul 15 73 10 3
2021 Jul 16 75 8 3
2021 Jul 17 75 5 2
2021 Jul 18 75 5 2
2021 Jul 19 75 5 2
2021 Jul 20 79 5 2
2021 Jul 21 81 5 2
2021 Jul 22 79 5 2
2021 Jul 23 79 5 2
2021 Jul 24 79 5 2
2021 Jul 25 79 5 2
2021 Jul 26 79 5 2
2021 Jul 27 79 5 2
2021 Jul 28 79 5 2
2021 Jul 29 77 5 2
2021 Jul 30 77 5 2
2021 Jul 31 77 5 2
2021 Aug 01 77 5 2
2021 Aug 02 75 8 3
2021 Aug 03 74 5 2
2021 Aug 04 74 5 2
2021 Aug 05 74 5 2
2021 Aug 06 74 5 2
2021 Aug 07 74 5 2
(NOAA)
