Product: Weekly Highlights and Forecasts
:Issued: 2026 Mar 09 0207 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 02 - 08 March 2026
Solar activity was at low levels with a total of 24 C-class flares observed. The largest flares of the period were observed early on 02 March; a C6.1 flare at 02/0206 UTC from Region 4380 (S20, L=195,
class/area Dao/140 on 26 Feb) and a C5.2 at 02/0615 UTC and a C 5.9 at 02/ 0749 UTC, both from Region 4381 (N08, L=173, class/area Eao/220 on 03 Mar). Region 4384 (N10, L=150, class/area Eho/300 on
03 Mar) was the most active, producing 10 weak C-class events. No Earth-directed CMEs were observed in available LASCO imagery.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 02, 03 and 08 Mar with a peak flux of 10,450 pfu observed at 02/1810 UTC. Normal to moderate levels were observed on
04-07 Mar.
Geomagnetic field activity reached quiet to G1 (Minor) geomagnetic storm levels during the period. Quiet levels were observed on 02 Mar through midday on 03 Mar. Unsettled to G1 (Minor) storm levels were
observed on the last half of 03 Mar into early 04 Mar due to effects from a positive polarity CH HSS. Quiet to isolated unsettled levels were observed on a majority of 04 Mar through 06 Mar. Negative
polarity CH HSS effects influenced 07-08 Mar with quiet to active levels observed on the 7th and quiet to G1 (minor) storms observed on 08 Mar.
Solar wind parameters observed a peak wind speed of about 675 km/s late on 07 Mar. Total field reached peaks of 11 nT on 03 Mar and 12 nT midday on 07 Mar, while Bz was southward to -10 nT late on 03 Mar
and -9 nT late on 06 Mar. Phi angle was in a mostly positive orientation on 02 Mar through midday on 06 Mar and in a negative orientation from midday on 06 Mar through 08 Mar.
Forecast of Solar and Geomagnetic Activity 09 March - 04 April 2026
Solar activity is expected to be at low levels, with a slight chance for M-class (R1-R2/Minor-Moderate) flares throughout the outlook period. Elevated probabilities are related to the flare potential of
both the currently observed spot groups and the potential from returning regions.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at high levels on 09-11, 16-19, 23-30 Mar and 04 Apr due to the influence of multiple, recurrent, CH HSSs. The
remainder of the outlook period is likely to be at normal to moderate levels.
Geomagnetic field activity is expected to reach G1 (Minor) geomagnetic storm levels on 14 Mar, 22 Mar, 25 Mar and 03-04 Apr during the onset CH HSS. G2 (Moderate) geomagnetic storm levels are
likely on 21 Mar due to negative polarity CH HSS effects. Unsettled to active levels are likely on 09-11, 15-20, 23-24, 26-28, 30 Mar and 02 Apr. All elevated levels of geomagnetic activity are
associated with the anticipated influence of multiple, recurrent, CH HSSs. The remainder of the outlook period is likely to be at mostly quiet levels.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2026 Mar 09 0207 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact www.swpc.noaa.gov/content/subscription-services
#
# 27-day Space Weather Outlook Table
# Issued 2026-03-09
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2026 Mar 09 135 12 4
2026 Mar 10 130 10 3
2026 Mar 11 125 8 3
2026 Mar 12 120 5 2
2026 Mar 13 115 5 2
2026 Mar 14 110 20 5
2026 Mar 15 110 15 4
2026 Mar 16 110 10 3
2026 Mar 17 110 10 3
2026 Mar 18 110 10 3
2026 Mar 19 105 12 4
2026 Mar 20 110 15 4
2026 Mar 21 110 35 6
2026 Mar 22 110 24 5
2026 Mar 23 115 15 4
2026 Mar 24 115 15 4
2026 Mar 25 120 18 5
2026 Mar 26 125 10 3
2026 Mar 27 130 8 3
2026 Mar 28 130 8 3
2026 Mar 29 130 5 2
2026 Mar 30 130 14 3
2026 Mar 31 130 6 2
2026 Apr 01 135 5 2
2026 Apr 02 130 10 3
2026 Apr 03 130 20 5
2026 Apr 04 130 25 5
(NOAA)
