Viewing archive of Sunday, 7 February 2021
Solar activity report
Report of Solar-Geophysical Activity 2021 Feb 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 38 Issued at 2200Z on 07 Feb 2021IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 0 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
on days one, two, and three (08 Feb, 09 Feb, 10 Feb).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 550 km/s at 07/1749Z. Total IMF
reached 11 nT at 07/0233Z. The maximum southward component of Bz reached
-8 nT at 07/0250Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 301 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (08 Feb) and quiet to
unsettled levels on days two and three (09 Feb, 10 Feb).
III. Event Probabilities 08 Feb to 10 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Feb 073 Predicted 08 Feb-10 Feb 073/073/073 90 Day Mean 07 Feb 083
V. Geomagnetic A Indices
Observed Afr/Ap 06 Feb 004/007 Estimated Afr/Ap 07 Feb 016/023 Predicted Afr/Ap 08 Feb-10 Feb 009/010-007/008-007/008
VI. Geomagnetic Activity Probabilities 08 Feb to 10 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 25% | 25% |
| Major-severe storm | 35% | 25% | 25% |
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