Viewing archive of Monday, 20 July 2026
Solar activity report
Report of Solar-Geophysical Activity 2026 Jul 20 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 201 Issued at 2200Z on 20 Jul 2026IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z Solar activity has been at moderate levels for the past 24
hours. There are currently 4 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (21 Jul, 22 Jul,
23 Jul).
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 286 km/s 20/0609Z. Total IMF reached 5.8 nT at 2044Z.
The maximum southward component of Bz reached -4.3 nT at 1902.
Electrons greater than 2 MeV at geosynchronous orbit reached a peak
level of 1303 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (21 Jul), unsettled to
minor storm levels on day two (22 Jul) and quiet to active levels on day
three (23 Jul).
III. Event Probabilities 21 Jul to 23 Jul
| Class M | 40% | 40% | 40% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Jul 137 Predicted 21 Jul-23 Jul 140/142/145 90 Day Mean 20 Jul 132
V. Geomagnetic A Indices
Observed Afr/Ap 19 Jul 004/004 Estimated Afr/Ap 20 Jul 004/004 Predicted Afr/Ap 21 Jul-23 Jul 007/008-020/030-013/014
VI. Geomagnetic Activity Probabilities 21 Jul to 23 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 40% | 35% |
| Minor storm | 10% | 30% | 15% |
| Major-severe storm | 01% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 05% | 10% |
| Minor storm | 25% | 20% | 30% |
| Major-severe storm | 40% | 70% | 50% |
All times in UTC
Latest news
Wednesday, 1 July 2026
X1.1 solar flare, G2 watch
Thursday, 4 June 2026
G3 geomagnetic storm watch for 4 and 5 June
Wednesday, 13 May 2026
Coronal hole faces Earth
Latest forum messages
Current Farside Activity 724SWPC Display bug or other issues 64AR4493 34Coronal holes 137Unspecified geomagnetic activity 366
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2026/07/04 | X1.3 |
| Last M-flare | 2026/07/20 | M3.4 |
| Last geomagnetic storm | 2026/07/04 | Kp7+ (G3) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (1%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| June 2026 | 94.4 -7.1 |
| July 2026 | 70.7 -23.7 |
| Last 30 days | 85.6 -20.4 |
This day in history*
Aurora on this day in history
No observations submitted for this day in history. If you've observed the aurora and you have some amazing photos to show off, submit your observations now!
Submit your aurora observation