Viewing archive of Sunday, 23 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 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 174 Issued at 2200Z on 23 Jun 2013IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M2 event observed at
23/2056Z from Region 1778 (S16E61). There are currently 8 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one and two (24 Jun, 25 Jun) and
expected to be low with a slight chance for an M-class flare on day
three (26 Jun).
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
773 km/s at 23/0632Z. Total IMF reached 8 nT at 23/0502Z. The maximum
southward component of Bz reached -8 nT at 23/0502Z. Protons greater
than 10 MeV at geosynchronous orbit reached a peak level of 11 pfu at
23/2030Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 1607 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (24 Jun) and quiet to
unsettled levels on days two and three (25 Jun, 26 Jun). Protons are
likely to cross threshold on day one (24 Jun), have a chance of crossing
threshold on day two (25 Jun) and have a slight chance of crossing
threshold on day three (26 Jun).
III. Event Probabilities 24 Jun to 26 Jun
| Class M | 40% | 30% | 20% |
| Class X | 05% | 05% | 05% |
| Proton | 60% | 40% | 20% |
| PCAF | yellow | ||
IV. Penticton 10.7 cm Flux
Observed 23 Jun 128 Predicted 24 Jun-26 Jun 130/125/125 90 Day Mean 23 Jun 122
V. Geomagnetic A Indices
Observed Afr/Ap 22 Jun 013/014 Estimated Afr/Ap 23 Jun 012/015 Predicted Afr/Ap 24 Jun-26 Jun 015/018-009/010-007/008
VI. Geomagnetic Activity Probabilities 24 Jun to 26 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 10% |
| Minor storm | 10% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 20% |
| Major-severe storm | 40% | 25% | 15% |
All times in UTC
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