Viewing archive of Thursday, 27 October 2016
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 2016 Oct 27 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 301 Issued at 2200Z on 27 Oct 2016IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 1 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 (28
Oct, 29 Oct, 30 Oct).
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic
field has been at unsettled to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 731 km/s at 26/2121Z. Total IMF
reached 6 nT at 27/2025Z. The maximum southward component of Bz reached
-5 nT at 27/1835Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 47726 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to minor storm levels on day one (28 Oct) and quiet
to active levels on days two and three (29 Oct, 30 Oct).
III. Event Probabilities 28 Oct to 30 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 27 Oct 079 Predicted 28 Oct-30 Oct 078/078/080 90 Day Mean 27 Oct 086
V. Geomagnetic A Indices
Observed Afr/Ap 26 Oct 031/044 Estimated Afr/Ap 27 Oct 023/030 Predicted Afr/Ap 28 Oct-30 Oct 017/024-015/018-014/016
VI. Geomagnetic Activity Probabilities 28 Oct to 30 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 20% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 20% | 20% | 20% |
All times in UTC
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