Viewing archive of Saturday, 24 October 2009
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 2009 Oct 24 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 297 Issued at 2200Z on 24 Oct 2009IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z Solar activity was very low. No flares were detected.
Region 1029 (N14W01) is now a 13-spot bipolar sunspot group.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
Geomagnetic field activity was mostly quiet. One period of unsettled
conditions was observed between 1800 - 2100Z.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be quiet to unsettled on day one (25 October) in
response to a recurrent coronal hole high speed stream. Quiet
conditions are expected on days two and three (26 - 27 October).
III. Event Probabilities 25 Oct to 27 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 24 Oct 076 Predicted 25 Oct-27 Oct 075/075/075 90 Day Mean 24 Oct 069
V. Geomagnetic A Indices
Observed Afr/Ap 23 Oct 007/008 Estimated Afr/Ap 24 Oct 008/010 Predicted Afr/Ap 25 Oct-27 Oct 008/010-005/005-005/005
VI. Geomagnetic Activity Probabilities 25 Oct to 27 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| 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
Ask your obscure/"stupid" space weather questions. 53Filaments and prominences 473Unspecified geomagnetic activity 1657iOS missing family sharing for in-app purchases 7Incoming & Unnumbered Active Regions 1212
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 | 2024/11/13 | M1.7 |
| 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 | 166 -0.4 |
| Last 30 days | 164 +16.8 |