Viewing archive of Thursday, 5 October 2017
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 2017 Oct 05 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 278 Issued at 2200Z on 05 Oct 2017IA. 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 C1 event observed at
05/1341Z from Region 2683 (N13W58). There are currently 2 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a slight chance for a C-class flare on days one, two, and three (06
Oct, 07 Oct, 08 Oct).
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 448 km/s at 05/2041Z. Total IMF reached 9
nT at 05/1713Z. The maximum southward component of Bz reached -8 nT at
05/2018Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 5863 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (06 Oct) and quiet to active levels on
days two and three (07 Oct, 08 Oct).
III. Event Probabilities 06 Oct to 08 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 05 Oct 085 Predicted 06 Oct-08 Oct 085/082/080 90 Day Mean 05 Oct 083
V. Geomagnetic A Indices
Observed Afr/Ap 04 Oct 005/ 009 Estimated Afr/Ap 05 Oct 005/006 Predicted Afr/Ap 06 Oct-08 Oct 005/005-008/010-011/012
VI. Geomagnetic Activity Probabilities 06 Oct to 08 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 30% | 30% |
| Minor storm | 05% | 15% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 20% | 25% | 25% |
| Major-severe storm | 20% | 45% | 45% |
All times in UTC
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