Viewing archive of Monday, 7 November 2011
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 2011 Nov 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 311 Issued at 2200Z on 07 Nov 2011IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z
Solar activity was low. Only low to mid-level C-class
activity was observed from both Regions 1338 (S13W12) and 1339
(N18E05). Both regions exhibited some growth in area and spot count
with Region 1338 developing a Beta-Gamma magnetic configuration.
There were no Earth-directed CMEs observed during the period.
IB. Solar Activity Forecast
Solar activity is expected to be
moderate during the period (08 - 10 November) with a slight chance
for high activity (M5 or higher) from Region 1339. There is also a
slight chance for a proton flare from this region during the period.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic field was at quiet to unsettled levels. Solar wind
speeds ranged between 300 to 375 km/s while the Bz component of the
interplanetary magnetic field did not vary much beyond +/- 5 nT.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet levels during the period (08 - 10 November).
III. Event Probabilities 08 Nov to 10 Nov
| Class M | 70% | 70% | 70% |
| Class X | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Nov 182 Predicted 08 Nov-10 Nov 180/180/180 90 Day Mean 07 Nov 129
V. Geomagnetic A Indices
Observed Afr/Ap 06 Nov 003/003 Estimated Afr/Ap 07 Nov 003/005 Predicted Afr/Ap 08 Nov-10 Nov 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 08 Nov to 10 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
Rovaniemi, Sodankylä, UtsjokiReykjavik
Kirkenes, Tromsø
Murmansk
Kiruna, Luleå
Latest news
Monday, 24 March 2025
Coronal hole faces Earth
Saturday, 22 March 2025
Strong G3 geomagnetic storm watch for 23 March
Wednesday, 5 March 2025
Coronal hole faces Earth
Latest forum messages
Large Coronal Hole 25 168AR4043 21Incoming & Unnumbered Active Regions 1647Aurora photography hints for those of us with smartphones 45Photographing auroras 36
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!
Latest alerts
16:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 16:05 UTC
15:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 14:59 UTC
09:15 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 08:59 UTC
06:27 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 54GW at 07:01 UTC
06:00 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 05:51 UTC
Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/27 | M2.0 |
| Last geomagnetic storm | 2025/03/26 | Kp6+ (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 132.3 -22.3 |
| Last 30 days | 131.2 -21.8 |