Viewing archive of Wednesday, 17 October 2007
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 2007 Oct 17 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 290 Issued at 2200Z on 17 Oct 2007IA. Analysis of Solar Active Regions and Activity from 16-2100Z to 17-2100Z Solar activity was very low.
IB. Solar Activity Forecast
Solar activity is expected to remain
very low.
IIA. Geophysical Activity Summary 16-2100Z to 17-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled, with isolated active periods as a
recurrent coronal hole becomes geoeffective. Isolated periods of
minor storming may occur at high latitudes on day three (20 Oct) at
the expected peak of the high-speed stream influence.
III. Event Probabilities 18 Oct to 20 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 17 Oct 067 Predicted 18 Oct-20 Oct 067/067/067 90 Day Mean 17 Oct 068
V. Geomagnetic A Indices
Observed Afr/Ap 16 Oct 001/002 Estimated Afr/Ap 17 Oct 003/005 Predicted Afr/Ap 18 Oct-20 Oct 008/010-010/012-012/015
VI. Geomagnetic Activity Probabilities 18 Oct to 20 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 20% |
| Minor storm | 05% | 10% | 10% |
| Major-severe storm | 01% | 05% | 10% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 35% |
| Minor storm | 10% | 15% | 15% |
| Major-severe storm | 05% | 10% | 10% |
Latest news
Monday, 22 April 2024
Lot's of sunspots! Big chance for major flare activity?
Saturday, 23 March 2024
X1.1 solar flare with earth-directed CME
Wednesday, 20 March 2024
Sunspot region 3615, G1 watch
Latest forum messages
What are these long and thin eruptions? 9Unspecified geomagnetic activity 947IMF - BT strength 8AR3654 1AR 3637, 3638, 3643 89
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 | 2024/03/28 | X1.1 |
| Last M-flare | 2024/04/25 | M1.3 |
| Last geomagnetic storm | 2024/04/19 | Kp7 (G3) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2024 | 104.9 -19.8 |
| Last 30 days | 136.2 +28 |