Viewing archive of Wednesday, 25 May 2022
Solar activity report
Report of Solar-Geophysical Activity 2022 May 25 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 145 Issued at 2200Z on 25 May 2022IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
25/1824Z from Region 3016 (S18W47). There are currently 7 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares and a slight chance for an X-class flare on
day one (26 May) and expected to be low with a slight chance for an
M-class flare on day two (27 May) and likely to be low with a slight
chance for an M-class flare on day three (28 May).
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 444 km/s at 24/2118Z. Total IMF reached 8 nT at
25/0900Z. The maximum southward component of Bz reached -6 nT at
25/0708Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 636 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on days one and two (26 May, 27 May) and
quiet to unsettled levels on day three (28 May). Protons greater than 10
Mev have a slight chance of crossing threshold on day one (26 May).
III. Event Probabilities 26 May to 28 May
| Class M | 30% | 20% | 15% |
| Class X | 10% | 05% | 01% |
| Proton | 10% | 05% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 May 137 Predicted 26 May-28 May 136/132/130 90 Day Mean 25 May 127
V. Geomagnetic A Indices
Observed Afr/Ap 24 May 003/004 Estimated Afr/Ap 25 May 005/006 Predicted Afr/Ap 26 May-28 May 010/012-011/014-007/010
VI. Geomagnetic Activity Probabilities 26 May to 28 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 30% | 25% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 40% | 40% | 30% |
All times in UTC
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