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Solar activity report
Report of Solar-Geophysical Activity 2022 Jul 29 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 210 Issued at 2200Z on 29 Jul 2022IA. 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.
The largest solar event of the period was a C4 event observed at
29/0433Z from Region 3068 (S15E45). There are currently 3 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares on days one, two, and three (30 Jul,
31 Jul, 01 Aug).
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 394 km/s at 29/0238Z. Total IMF reached 7 nT at
29/1453Z. The maximum southward component of Bz reached -4 nT at
29/2013Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 759 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (30 Jul), quiet to active
levels on day two (31 Jul) and quiet levels on day three (01 Aug).
III. Event Probabilities 30 Jul to 01 Aug
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 29 Jul 093 Predicted 30 Jul-01 Aug 093/093/090 90 Day Mean 29 Jul 126
V. Geomagnetic A Indices
Observed Afr/Ap 28 Jul 009/008 Estimated Afr/Ap 29 Jul 004/004 Predicted Afr/Ap 30 Jul-01 Aug 007/008-011/012-006/005
VI. Geomagnetic Activity Probabilities 30 Jul to 01 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 35% | 10% |
| Minor storm | 05% | 15% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 30% | 20% |
| Major-severe storm | 30% | 50% | 15% |
All times in UTC
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| Last M-flare | 2026/03/28 | M1.3 |
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| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
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