Viewing archive of Saturday, 6 October 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 Oct 06 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 279 Issued at 2200Z on 06 Oct 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 0 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
on days one, two, and three (07 Oct, 08 Oct, 09 Oct).
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 377 km/s at 05/2120Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 408 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to major storm levels on day one (07 Oct), unsettled to
major storm levels on day two (08 Oct) and quiet to active levels on day
three (09 Oct).
III. Event Probabilities 07 Oct to 09 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 06 Oct 069 Predicted 07 Oct-09 Oct 069/069/069 90 Day Mean 06 Oct 069
V. Geomagnetic A Indices
Observed Afr/Ap 05 Oct 008/007 Estimated Afr/Ap 06 Oct 006/006 Predicted Afr/Ap 07 Oct-09 Oct 017/024-025/035-014/015
VI. Geomagnetic Activity Probabilities 07 Oct to 09 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 35% |
| Minor storm | 35% | 35% | 15% |
| Major-severe storm | 20% | 20% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 10% |
| Minor storm | 20% | 20% | 25% |
| Major-severe storm | 75% | 75% | 50% |
All times in UTC
Latest news
Sunday, 7 December 2025
M8.1 solar flare with earth-directed CME
Monday, 1 December 2025
X1.9 solar flare, Coronal hole faces Earth
Friday, 14 November 2025
X4.0 solar flare
Latest forum messages
AR4299 M8.1 CME 2025/12/06 450Sporadic E and Flare activity 37Notification bug 1AR4294 / 4296 / 4298 450Geminid Meteor Shower 2
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2025/12/08 | X1.1 |
| Last M-flare | 2025/12/10 | M4.4 |
| Last geomagnetic storm | 2025/12/10 | Kp6+ (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2025 | 91.8 -22.8 |
| December 2025 | 155.3 +63.5 |
| Last 30 days | 109 +10.8 |