Viewing archive of Friday, 23 August 2013
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 2013 Aug 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 235 Issued at 2200Z on 23 Aug 2013IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C1 event observed at
22/2207Z from Region 1828 (N14E26). There are currently 9 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a slight chance for an M-class flare on day one (24 Aug) and expected to
be low on days two and three (25 Aug, 26 Aug).
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
593 km/s at 22/2215Z. Total IMF reached 7 nT at 22/2100Z. The maximum
southward component of Bz reached -5 nT at 22/2205Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 1857 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to minor storm levels on day one (24 Aug), quiet to
minor storm levels on day two (25 Aug) and quiet to unsettled levels on
day three (26 Aug).
III. Event Probabilities 24 Aug to 26 Aug
| Class M | 10% | 05% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Aug 124 Predicted 24 Aug-26 Aug 125/120/115 90 Day Mean 23 Aug 113
V. Geomagnetic A Indices
Observed Afr/Ap 22 Aug 011/014 Estimated Afr/Ap 23 Aug 014/016 Predicted Afr/Ap 24 Aug-26 Aug 020/025-019/020-011/012
VI. Geomagnetic Activity Probabilities 24 Aug to 26 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 40% | 20% |
| Minor storm | 25% | 30% | 05% |
| Major-severe storm | 05% | 10% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 15% |
| Minor storm | 25% | 20% | 30% |
| Major-severe storm | 60% | 75% | 30% |
Latest news
Saturday, 23 March 2024
X1.1 solar flare with earth-directed CME
Wednesday, 20 March 2024
Sunspot region 3615, G1 watch
Thursday, 22 February 2024
X6.3 solar flare
Latest forum messages
Sunspot region list in German language 3Imagery from Total Solar Eclipse 08/04/2024 6Unspecified geomagnetic activity 942Unproven theories 323Growth of Cycle 25 424
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 | 2024/04/19 | M1.0 |
| 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 |