Viewing archive of Friday, 4 February 2022
Solar activity report
Report of Solar-Geophysical Activity 2022 Feb 04 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 35 Issued at 2200Z on 04 Feb 2022IA. Analysis of Solar Active Regions and Activity from 03-2100Z to 04-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C5 event observed at
04/1551Z from Region 2936 (N17W75). There are currently 5 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 and two (05 Feb, 06 Feb) and
likely to be low with a slight chance for an M-class flare on day three
(07 Feb).
IIA. Geophysical Activity Summary 03-2100Z to 04-2100Z
The geomagnetic
field has been at unsettled to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 581 km/s at 04/0029Z. Total IMF
reached 11 nT at 04/0707Z. The maximum southward component of Bz reached
-10 nT at 04/1640Z. Electrons greater than 2 MeV at geosynchronous
orbit reached a peak level of 4014 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to active levels on days one and two (05 Feb, 06 Feb)
and quiet to unsettled levels on day three (07 Feb).
III. Event Probabilities 05 Feb to 07 Feb
| Class M | 35% | 35% | 15% |
| Class X | 05% | 05% | 01% |
| Proton | 05% | 05% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 04 Feb 130 Predicted 05 Feb-07 Feb 132/128/122 90 Day Mean 04 Feb 100
V. Geomagnetic A Indices
Observed Afr/Ap 03 Feb 018/026 Estimated Afr/Ap 04 Feb 020/029 Predicted Afr/Ap 05 Feb-07 Feb 015/018-014/016-011/010
VI. Geomagnetic Activity Probabilities 05 Feb to 07 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 30% |
| Minor storm | 25% | 15% | 10% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 25% | 25% | 30% |
| Major-severe storm | 60% | 40% | 40% |
All times in UTC
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