Viewing archive of Sunday, 26 December 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 Dec 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 361 Issued at 2200Z on 26 Dec 2004IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity was very low. Region 713 (S08W47)
produced a B9.9 flare at 26/1240Z. Region 713 is still in a decay
phase. A long duration B4.3 flare was observed on SXI imagery at
26/1929Z from a spotless plage region at S16E40.
IB. Solar Activity Forecast
Solar activity is expected to be very
low with a chance for isolated C-class activity from Region 713.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field was quiet to unsettled. The solar wind speed
is still elevated around 500 km/s due to the continued influence of
a geoeffective high speed coronal hole stream.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled with a chance for isolated active
periods at high latitudes on 27 December. Expect quiet to unsettled
on 28 and 29 December.
III. Event Probabilities 27 Dec to 29 Dec
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Dec 092 Predicted 27 Dec-29 Dec 090/090/090 90 Day Mean 26 Dec 104
V. Geomagnetic A Indices
Observed Afr/Ap 25 Dec 006/012 Estimated Afr/Ap 26 Dec 008/010 Predicted Afr/Ap 27 Dec-29 Dec 008/010-006/008-005/005
VI. Geomagnetic Activity Probabilities 27 Dec to 29 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
Latest news
Tuesday, 14 May 2024
X8.7 solar flare
Monday, 13 May 2024
M6.6 solar flare with earth-directed CME
Sunday, 12 May 2024
Small CME impact, Record visitor amount
Latest forum messages
May 2024 Geomagnetic Storms from AR 13664 (2) 299Trying to identify if this is STEVE? 5That was close..? 28Filaments and prominences 116AR3664 993
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 | 2024/05/14 | X8.5 |
| Last M-flare | 2024/05/14 | M4.4 |
| Last geomagnetic storm | 2024/05/13 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| May 2024 | 151.7 +15.2 |
| Last 30 days | 176.8 +77.8 |