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Solar activity report
Report of Solar-Geophysical Activity 2022 May 01 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 121 Issued at 2200Z on 01 May 2022IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 01-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C3 event observed at
01/1128Z. There are currently 3 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a slight chance for an M-class flare on day one (02 May) and likely to
be low with a slight chance for an M-class flare on days two and three
(03 May, 04 May).
IIA. Geophysical Activity Summary 30-2100Z to 01-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 541 km/s at 01/2029Z. Total IMF reached 6
nT at 30/2255Z. The maximum southward component of Bz reached -4 nT at
01/1628Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 1553 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (02 May), quiet to unsettled
levels on day two (03 May) and quiet levels on day three (04 May).
Protons greater than 10 Mev have a slight chance of crossing threshold
on day one (02 May).
III. Event Probabilities 02 May to 04 May
| Class M | 15% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 10% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 01 May 109 Predicted 02 May-04 May 105/105/105 90 Day Mean 01 May 119
V. Geomagnetic A Indices
Observed Afr/Ap 30 Apr 016/018 Estimated Afr/Ap 01 May 010/009 Predicted Afr/Ap 02 May-04 May 012/015-007/008-005/005
VI. Geomagnetic Activity Probabilities 02 May to 04 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 10% | 10% |
| Minor storm | 15% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 45% | 20% | 10% |
All times in UTC
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| Last M-flare | 2024/12/23 | M8.9 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
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