Viewing archive of Sunday, 5 February 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Feb 05 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 36 Issued at 2200Z on 05 Feb 2023IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C6 event observed at
05/0326Z. There are currently 5 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 days one, two, and three (06
Feb, 07 Feb, 08 Feb).
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 496 km/s at 05/0833Z. Total IMF reached 9 nT at
05/1936Z. The maximum southward component of Bz reached -7 nT at
05/1627Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 139 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (06 Feb) and quiet to
active levels on days two and three (07 Feb, 08 Feb).
III. Event Probabilities 06 Feb to 08 Feb
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 05 Feb 144 Predicted 06 Feb-08 Feb 150/160/155 90 Day Mean 05 Feb 153
V. Geomagnetic A Indices
Observed Afr/Ap 04 Feb 005/004 Estimated Afr/Ap 05 Feb 005/005 Predicted Afr/Ap 06 Feb-08 Feb 008/010-013/015-012/015
VI. Geomagnetic Activity Probabilities 06 Feb to 08 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 30% | 30% |
| Minor storm | 05% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 25% | 25% | 25% |
| Major-severe storm | 25% | 40% | 40% |
All times in UTC
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