Viewing archive of Friday, 27 November 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 Nov 27 2240 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 330 Issued at 2200Z on 27 Nov 2015IA. 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 4 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 flares on days one, two, and three
(28 Nov, 29 Nov, 30 Nov).
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic
field reached unsettled levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 342 km/s at
27/1759Z. Total IMF reached 10 nT at 27/1846Z. The maximum southward
component of Bz reached -9 nT at 27/0127Z. Electrons greater than 2 MeV
at geosynchronous orbit reached a peak level of 621 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one, two, and three (28 Nov,
29 Nov, 30 Nov).
III. Event Probabilities 28 Nov to 30 Nov
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 27 Nov 099 Predicted 28 Nov-30 Nov 099/099/099 90 Day Mean 27 Nov 105
V. Geomagnetic A Indices
Observed Afr/Ap 26 Nov 002/003 Estimated Afr/Ap 27 Nov 007/008 Predicted Afr/Ap 28 Nov-30 Nov 007/008-007/008-007/008
VI. Geomagnetic Activity Probabilities 28 Nov to 30 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 25% | 25% | 25% |
| Major-severe storm | 15% | 15% | 15% |
Latest news
Saturday, 23 March 2024
X1.1 solar flare with earth-directed CME
Wednesday, 20 March 2024
Sunspot region 3615, G1 watch
Thursday, 22 February 2024
X6.3 solar flare
Latest forum messages
Unspecified geomagnetic activity 921Growth of Cycle 25 424GONG Farside Images added to the SWL site? 5Changelog/Featurelog 152Imagery from Total Solar Eclipse 08/04/2024 5
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2024/03/28 | X1.1 |
| Last M-flare | 2024/04/19 | M1.0 |
| Last geomagnetic storm | 2024/04/16 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2024 | 104.9 -19.8 |