Viewing archive of Saturday, 2 February 2019
Solar activity report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Report of Solar-Geophysical Activity 2019 Feb 02 2325 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 33 Issued at 2200Z on 02 Feb 2019IA. Analysis of Solar Active Regions and Activity from 01-2100Z to 02-2100Z 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 (03 Feb, 04 Feb, 05 Feb).
IIA. Geophysical Activity Summary 01-2100Z to 02-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 613 km/s at 02/1818Z. Total IMF reached 7
nT at 02/0521Z. The maximum southward component of Bz reached -6 nT at
02/0403Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 11372 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (03 Feb, 04 Feb)
and quiet to active levels on day three (05 Feb).
III. Event Probabilities 03 Feb to 05 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 02 Feb 071 Predicted 03 Feb-05 Feb 071/071/071 90 Day Mean 02 Feb 070
V. Geomagnetic A Indices
Observed Afr/Ap 01 Feb 010/010 Estimated Afr/Ap 02 Feb 015/018 Predicted Afr/Ap 03 Feb-05 Feb 010/012-008/008-010/012
VI. Geomagnetic Activity Probabilities 03 Feb to 05 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 30% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 15% |
| Minor storm | 25% | 30% | 30% |
| Major-severe storm | 25% | 25% | 30% |
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