Viewing archive of Friday, 30 July 2010
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 2010 Jul 30 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 211 Issued at 2200Z on 30 Jul 2010IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was very low. Region (1092) produced a
few B-class x-ray flares. The largest of these was a B9 at 30/0221Z
associated with a limb event CME visible off the northeast limb on
LASCO C3 imagery as well as STEREO A and B coronagraphs.
IB. Solar Activity Forecast
Solar activity is forecast to be very
low to low with a chance for a C-class flare for the next 3 days (31
July-02 August).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field was mostly quiet with an isolated period of
unsettled conditions between 15-18Z. The greater than 2 MeV electron
flux at geosynchronous orbit reached high levels during the past 24
hours.
IIB. Geophysical Activity Forecast
The geomagnetic field is
forecast to be mostly quiet with a few isolated periods of unsettled
conditions for the next 3 days (31 July-02 August).
III. Event Probabilities 31 Jul to 02 Aug
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Jul 085 Predicted 31 Jul-02 Aug 085/085/085 90 Day Mean 30 Jul 075
V. Geomagnetic A Indices
Observed Afr/Ap 29 Jul 005/007 Estimated Afr/Ap 30 Jul 005/007 Predicted Afr/Ap 31 Jul-02 Aug 005/006-005/006-005/006
VI. Geomagnetic Activity Probabilities 31 Jul to 02 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 40% | 40% | 40% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
Latest news
Monday, 23 December 2024
M9.0 solar flare with earth-directed CME
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Latest forum messages
AR 13932 622024/12/23 CME by AR 13932's M8.9 flare. 7Changelog/Featurelog 163Incoming & Unnumbered Active Regions 1366Growth of Cycle 25 779
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 | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/24 | M4.1 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 110.7 -41.8 |
| Last 30 days | 117.3 -41.4 |