Viewing archive of Monday, 29 July 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 Jul 29 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 210 Issued at 2200Z on 29 Jul 2013IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C2 event observed at
29/1651Z from Region 1800 (S08W84). There are currently 6 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low with a
slight chance for an M-class flare on days one, two, and three (30 Jul,
31 Jul, 01 Aug).
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
468 km/s at 28/2240Z. Total IMF reached 5 nT at 29/1301Z. The maximum
southward component of Bz reached -3 nT at 29/0126Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 1035 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one, two, and three (30 Jul, 31 Jul, 01
Aug).
III. Event Probabilities 30 Jul to 01 Aug
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 29 Jul 112 Predicted 30 Jul-01 Aug 115/120/125 90 Day Mean 29 Jul 119
V. Geomagnetic A Indices
Observed Afr/Ap 28 Jul 008/007 Estimated Afr/Ap 29 Jul 005/005 Predicted Afr/Ap 30 Jul-01 Aug 004/005-004/005-006/005
VI. Geomagnetic Activity Probabilities 30 Jul to 01 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 10% | 10% | 10% |
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