Viewing archive of Sunday, 23 October 2005
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 2005 Oct 23 2204 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 296 Issued at 2200Z on 23 Oct 2005IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z
Solar activity was very low. No flares were observed
during the past 24 hours. Region 817 (N04E21), containing a
unipolar sunspot, was numbered today. Region 815 (N07W45) continues
to decay, with no sunspots reported.
IB. Solar Activity Forecast
Solar activity is expected to remain
very low.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field was at quiet levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at predominantly unsettled levels, with isolated
periods of active conditions, due to a favorably positioned coronal
hole.
III. Event Probabilities 24 Oct to 26 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Oct 074 Predicted 24 Oct-26 Oct 075/075/075 90 Day Mean 23 Oct 088
V. Geomagnetic A Indices
Observed Afr/Ap 22 Oct 007/006 Estimated Afr/Ap 23 Oct 007/012 Predicted Afr/Ap 24 Oct-26 Oct 012/012-012/012-012/012
VI. Geomagnetic Activity Probabilities 24 Oct to 26 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 35% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 10% | 10% | 10% |
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
Norilsk, VorkutaLatest news
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
Saturday, 22 March 2025
Strong G3 geomagnetic storm watch for 23 March
Latest forum messages
AR4046 160Unspecified geomagnetic activity 2190Unexplained proton activity 55AR14028 2025/03/21 CME 2025/03/23 G3 Watch 348Similar AR 3664 vs AR 4048 ??? 11
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
13:03 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 50GW at 13:56 UTC
Wednesday, 2 April 2025
04:03 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 50GW at 04:56 UTC
01:45 UTC - Geomagnetic activity
Active geomagnetic conditions (Kp4) Threshold Reached: 01:32 UTC
Tuesday, 1 April 2025
22:51 UTC - Solar flare
Moderate M2.5 flare
22:30 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.45)
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/01 | M2.5 |
| Last geomagnetic storm | 2025/03/27 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| April 2025 | 152.5 -2.1 |
| Last 30 days | 130.7 -17.9 |