Viewing archive of Monday, 24 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 24 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 175 Issued at 2200Z on 24 Jun 2013IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C9 event observed at
24/1132Z from Region 1778 (S16E49). There are currently 6 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for isolated M-class flares on day one (25 Jun) and expected to
be low with a slight chance for an M-class flare on day two (26 Jun) and
likely to be low with a slight chance for an M-class flare on day three
(27 Jun).
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
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
618 km/s at 24/1112Z. Total IMF reached 6 nT at 23/2107Z. The maximum
southward component of Bz reached -5 nT at 23/2115Z. Protons greater
than 10 MeV at geosynchronous orbit reached a peak level of 14 pfu at
24/0520Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 10700 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (25 Jun, 26 Jun)
and quiet to active levels on day three (27 Jun). Protons have a chance
of crossing threshold on day one (25 Jun), have a slight chance of
crossing threshold on day two and three (26-27 Jun).
III. Event Probabilities 25 Jun to 27 Jun
| Class M | 30% | 20% | 10% |
| Class X | 05% | 05% | 01% |
| Proton | 30% | 20% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 24 Jun 121 Predicted 25 Jun-27 Jun 115/115/110 90 Day Mean 24 Jun 123
V. Geomagnetic A Indices
Observed Afr/Ap 23 Jun 016/018 Estimated Afr/Ap 24 Jun 013/015 Predicted Afr/Ap 25 Jun-27 Jun 009/010-006/008-009/015
VI. Geomagnetic Activity Probabilities 25 Jun to 27 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 30% |
| Minor storm | 01% | 01% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 20% | 25% |
| Major-severe storm | 20% | 15% | 40% |
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