Viewing archive of Monday, 29 June 2026
Solar activity report
Report of Solar-Geophysical Activity 2026 Jun 29 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 180 Issued at 2200Z on 29 Jun 2026IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 5 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a slight chance for an X-class flare on days one, two, and three
(30 Jun, 01 Jul, 02 Jul).
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 508 km/s at 29/1514Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 2893 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on day one (30 Jun) and quiet to
active levels on days two and three (01 Jul, 02 Jul). Protons greater
than 10 Mev have a slight chance of crossing threshold on day three (02
Jul).
III. Event Probabilities 30 Jun to 02 Jul
| Class M | 60% | 60% | 60% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 29 Jun 195 Predicted 30 Jun-02 Jul 190/185/185 90 Day Mean 29 Jun 127
V. Geomagnetic A Indices
Observed Afr/Ap 28 Jun 006/005 Estimated Afr/Ap 29 Jun 006/009 Predicted Afr/Ap 30 Jun-02 Jul 018/025-011/012-013/012
VI. Geomagnetic Activity Probabilities 30 Jun to 02 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 45% | 35% | 35% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 10% | 10% |
| Minor storm | 30% | 25% | 25% |
| Major-severe storm | 65% | 55% | 55% |
All times in UTC
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Space weather facts
| Last X-flare | 2026/06/03 | X1.0 |
| Last M-flare | 2026/06/30 | M5.8 |
| Last geomagnetic storm | 2026/06/25 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| May 2026 | 101.4 +22.1 |
| June 2026 | 103.3 +1.9 |
| Last 30 days | 103.5 +4.4 |
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