Viewing archive of Friday, 7 June 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 Jun 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 158 Issued at 2200Z on 07 Jun 2013IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C3 event observed at
07/1151Z from Region 1762 (S28W87). There are currently 4 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 day one (08 Jun) and expected to
be very low with a chance for a C-class flares on days two and three (09
Jun, 10 Jun).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic
field has been at quiet to major storm levels for the past 24 hours.
Solar wind speed, as measured by the ACE spacecraft, reached a peak
speed of 482 km/s at 06/2155Z. Total IMF reached 13 nT at 06/2335Z. The
maximum southward component of Bz reached -12 nT at 07/0024Z. Electrons
greater than 2 MeV at geosynchronous orbit reached a peak level of 4095
pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on days one and three (08 Jun, 10 Jun)
and quiet to minor storm levels on day two (09 Jun).
III. Event Probabilities 08 Jun to 10 Jun
| Class M | 15% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Jun 110 Predicted 08 Jun-10 Jun 105/100/100 90 Day Mean 07 Jun 122
V. Geomagnetic A Indices
Observed Afr/Ap 06 Jun 016/021 Estimated Afr/Ap 07 Jun 025/034 Predicted Afr/Ap 08 Jun-10 Jun 011/015-014/018-008/010
VI. Geomagnetic Activity Probabilities 08 Jun to 10 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 40% | 20% |
| Minor storm | 15% | 20% | 05% |
| Major-severe storm | 01% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 15% |
| Minor storm | 30% | 25% | 30% |
| Major-severe storm | 45% | 60% | 30% |
All times in UTC
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