Viewing archive of Thursday, 9 September 2004
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 2004 Sep 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 253 Issued at 2200Z on 09 Sep 2004IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z Solar activity was low. Newly numbered Region 672
(N05E73) produced two C class flares, a C1.2 at 2222 UTC, and a long
duration C3.2, with a maximum at 0601 UTC. A limb CME was
associated with the C3.2 event, but was not Earth directed. Region
671 (S09W68) produced a B9.3 flare at 1800 UTC, and continues to
grow.
IB. Solar Activity Forecast
Solar activity is expected to be
mostly low with a chance for an isolated M class flare, particularly
from Region 672.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled for the next three days (10-12
September).
III. Event Probabilities 10 Sep to 12 Sep
| Class M | 20% | 20% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 09 Sep 131 Predicted 10 Sep-12 Sep 135/140/140 90 Day Mean 09 Sep 111
V. Geomagnetic A Indices
Observed Afr/Ap 08 Sep 004/009 Estimated Afr/Ap 09 Sep 005/005 Predicted Afr/Ap 10 Sep-12 Sep 005/005-005/008-008/008
VI. Geomagnetic Activity Probabilities 10 Sep to 12 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 25% |
| Minor storm | 10% | 10% | 15% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 30% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
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
Unproven theories 330Filaments and prominences 53Growth of Cycle 25 431Sporadic E and Flare activity 17New to this 7
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 | 2024/04/23 | M3.5 |
| 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 | 125.4 +21.1 |