Viewing archive of Thursday, 6 December 2018
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 2018 Dec 06 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 340 Issued at 2200Z on 06 Dec 2018IA. Analysis of Solar Active Regions and Activity from 05-2100Z to 06-2100Z 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 (07
Dec, 08 Dec, 09 Dec).
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 447 km/s at 06/0115Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 135 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (07 Dec) and quiet to
unsettled levels on days two and three (08 Dec, 09 Dec).
III. Event Probabilities 07 Dec to 09 Dec
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 06 Dec 070 Predicted 07 Dec-09 Dec 070/070/068 90 Day Mean 06 Dec 069
V. Geomagnetic A Indices
Observed Afr/Ap 05 Dec 003/003 Estimated Afr/Ap 06 Dec 007/007 Predicted Afr/Ap 07 Dec-09 Dec 010/010-008/008-008/008
VI. Geomagnetic Activity Probabilities 07 Dec to 09 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 35% | 25% | 25% |
| Major-severe storm | 30% | 20% | 20% |
All times in UTC
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