Viewing archive of Wednesday, 2 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 02 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 336 Issued at 2200Z on 02 Dec 2015IA. Analysis of Solar Active Regions and Activity from 01-2100Z to 02-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C2 event observed at
02/0446Z from Region 2458 (N11W66). 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 and two (03 Dec, 04 Dec)
and expected to be very low with a slight chance for a C-class flare on
day three (05 Dec).
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, as measured by the ACE spacecraft, reached a peak speed of
507 km/s at 01/2123Z. Total IMF reached 8 nT at 01/2248Z. The maximum
southward component of Bz reached -6 nT at 02/1355Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 1420 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and three (03 Dec, 05 Dec) and quiet
to unsettled levels on day two (04 Dec).
III. Event Probabilities 03 Dec to 05 Dec
| Class M | 05% | 05% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 02 Dec 095 Predicted 03 Dec-05 Dec 100/100/095 90 Day Mean 02 Dec 106
V. Geomagnetic A Indices
Observed Afr/Ap 01 Dec 011/011 Estimated Afr/Ap 02 Dec 008/008 Predicted Afr/Ap 03 Dec-05 Dec 006/005-008/008-007/006
VI. Geomagnetic Activity Probabilities 03 Dec to 05 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 10% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 20% |
| Minor storm | 15% | 30% | 25% |
| Major-severe storm | 15% | 20% | 20% |
All times in UTC
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