Viewing archive of Friday, 17 February 2006
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 2006 Feb 17 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 048 Issued at 2200Z on 17 Feb 2006IA. Analysis of Solar Active Regions and Activity from 16-2100Z to 17-2100Z Solar activity continues at very low levels. Region 854
(S08W09) and newly numbered Region 855 (N05E15) are both in decay. A
large CME was observed off the northeast limb at approximately
17/0530Z. The CME is not expected to be geoeffective.
IB. Solar Activity Forecast
Solar activity is expected to continue
at very low levels.
IIA. Geophysical Activity Summary 16-2100Z to 17-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet on 18 February. A coronal hole high speed solar
wind stream is expected to rotate into a geoeffective position on 19
February. Unsettled conditions with isolated active periods are
possible on 19 and 20 February.
III. Event Probabilities 18 Feb to 20 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 17 Feb 079 Predicted 18 Feb-20 Feb 080/085/085 90 Day Mean 17 Feb 085
V. Geomagnetic A Indices
Observed Afr/Ap 16 Feb 007/008 Estimated Afr/Ap 17 Feb 005/006 Predicted Afr/Ap 18 Feb-20 Feb 005/005-010/012-008/010
VI. Geomagnetic Activity Probabilities 18 Feb to 20 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 25% | 25% |
| Minor storm | 01% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 30% | 30% |
| Minor storm | 05% | 15% | 15% |
| Major-severe storm | 01% | 05% | 05% |
All times in UTC
Latest news
Friday, 17 May 2024
Let's compare! Halloween 2003 VS May 2024 Solar Storms!
Friday, 17 May 2024
Coronal mass ejection impact, New website feature!
Wednesday, 15 May 2024
More X-flares!
Latest forum messages
Latest SC25 Predictions 126Filaments and prominences 128What makes AR3684 magnetically distinct from AR3685? 5Unproven theories 481AR3664 1072
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 | 2024/05/15 | X2.9 |
| Last M-flare | 2024/05/17 | M7.1 |
| Last geomagnetic storm | 2024/05/17 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| May 2024 | 157.7 +21.2 |
| Last 30 days | 171.7 +57.7 |