Viewing archive of Saturday, 5 December 2015
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 2015 Dec 05 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 339 Issued at 2200Z on 05 Dec 2015IA. 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
05/1521Z from Region 2463 (S12E52). There are currently 2 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares on days one, two, and three (06 Dec,
07 Dec, 08 Dec).
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
509 km/s at 05/1827Z. Total IMF reached 10 nT at 05/1402Z. The maximum
southward component of Bz reached -9 nT at 05/0647Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 805 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to minor storm levels on days one and two (06 Dec, 07
Dec) and quiet to minor storm levels on day three (08 Dec).
III. Event Probabilities 06 Dec to 08 Dec
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 05 Dec 101 Predicted 06 Dec-08 Dec 100/100/100 90 Day Mean 05 Dec 106
V. Geomagnetic A Indices
Observed Afr/Ap 04 Dec 004/004 Estimated Afr/Ap 05 Dec 012/017 Predicted Afr/Ap 06 Dec-08 Dec 020/030-020/025-016/020
VI. Geomagnetic Activity Probabilities 06 Dec to 08 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 35% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 55% | 55% | 55% |
All times in UTC
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