Viewing archive of Wednesday, 23 February 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 Feb 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 054 Issued at 2200Z on 23 Feb 2011IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity has been low. Region 1161 (N13W69)
produced the periods only C-class event, a C1 at 23/1223Z. Both
Region 1161 and Region 1162 (N18W73) have decayed significantly and
have a simple Beta magnetic classification.
IB. Solar Activity Forecast
Solar activity is expected to be very
low for the next three days (24-26 February). There is a chance for
an isolated C-class event from Region 1161 before it rotates off
the visible disk.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field has been quiet with an isolated unsettled
period at 23/1500-1800Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be predominately quiet on day one (24 February). Quiet
to unsettled conditions are expected on days two and three (25-26
February).
III. Event Probabilities 24 Feb to 26 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Feb 089 Predicted 24 Feb-26 Feb 085/085/085 90 Day Mean 23 Feb 087
V. Geomagnetic A Indices
Observed Afr/Ap 22 Feb 001/001 Estimated Afr/Ap 23 Feb 002/005 Predicted Afr/Ap 24 Feb-26 Feb 005/005-007/008-007/008
VI. Geomagnetic Activity Probabilities 24 Feb to 26 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
Latest news
Monday, 11 November 2024
Coronal hole faces Earth
Friday, 1 November 2024
X2.0 solar flare
Wednesday, 9 October 2024
X1.8 solar flare, severe geomagnetic storm watch
Latest forum messages
sun goes blank 43AR13889 136AR13883 2024/11/04 CME 43Incoming & Unnumbered Active Regions 1204AR 3878 176
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 | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/11 | M1.3 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 175.7 +9.3 |
| Last 30 days | 166.1 +21.7 |