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Solar activity report
Report of Solar-Geophysical Activity 2022 May 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 131 Issued at 2200Z on 11 May 2022IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M2 event observed at
11/1858Z. There are currently 4 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 day one (12 May) and
expected to be low with a chance for M-class flares and a slight chance
for an X-class flare on days two and three (13 May, 14 May).
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 322 km/s at 11/1414Z. Total IMF reached 11 nT at
11/1558Z. The maximum southward component of Bz reached -10 nT at
11/1912Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 163 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one, two, and three (12 May,
13 May, 14 May).
III. Event Probabilities 12 May to 14 May
| Class M | 55% | 50% | 50% |
| Class X | 20% | 15% | 15% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 May 133 Predicted 12 May-14 May 124/124/126 90 Day Mean 11 May 118
V. Geomagnetic A Indices
Observed Afr/Ap 10 May 002/003 Estimated Afr/Ap 11 May 005/007 Predicted Afr/Ap 12 May-14 May 005/006-008/008-010/012
VI. Geomagnetic Activity Probabilities 12 May to 14 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 25% |
| Minor storm | 05% | 05% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 25% | 30% |
| Major-severe storm | 25% | 30% | 40% |
All times in UTC
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Space weather facts
| Last X-flare | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/20 | M1.1 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
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| Monthly mean Sunspot Number | |
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| October 2024 | 166.4 +25 |
| November 2024 | 142.7 -23.8 |
| Last 30 days | 156.1 +4.7 |