Viewing archive of Thursday, 7 August 2014
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 2014 Aug 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 219 Issued at 2200Z on 07 Aug 2014IA. 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 C1 event observed at
07/0552Z from Region 2130 (S08W54). There are currently 6 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a slight chance for an M-class flare on days one, two, and three (08
Aug, 09 Aug, 10 Aug).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 456 km/s at
06/2102Z. Total IMF reached 5 nT at 07/2007Z. The maximum southward
component of Bz reached -4 nT at 07/1741Z. Electrons greater than 2 MeV
at geosynchronous orbit reached a peak level of 907 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and three (08 Aug, 10
Aug) and quiet levels on day two (09 Aug).
III. Event Probabilities 08 Aug to 10 Aug
| Class M | 20% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Aug 136 Predicted 08 Aug-10 Aug 130/125/125 90 Day Mean 07 Aug 130
V. Geomagnetic A Indices
Observed Afr/Ap 06 Aug 007/008 Estimated Afr/Ap 07 Aug 005/005 Predicted Afr/Ap 08 Aug-10 Aug 007/008-006/005-007/008
VI. Geomagnetic Activity Probabilities 08 Aug to 10 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 15% |
| Minor storm | 05% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 15% | 25% |
| Major-severe storm | 15% | 10% | 25% |
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