Viewing archive of Saturday, 3 May 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 May 03 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 123 Issued at 2200Z on 03 May 2014IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C5 event observed at
03/0608Z from Region 2051 (S09W50). 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 M-class flares and a slight chance for an X-class flare on
days one, two, and three (04 May, 05 May, 06 May).
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
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
361 km/s at 03/1856Z. Total IMF reached 11 nT at 03/1842Z. The maximum
southward component of Bz reached -8 nT at 03/1944Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 104 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (04 May), quiet to unsettled
levels on day two (05 May) and quiet levels on day three (06 May).
III. Event Probabilities 04 May to 06 May
| Class M | 40% | 40% | 40% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 03 May 133 Predicted 04 May-06 May 135/140/140 90 Day Mean 03 May 153
V. Geomagnetic A Indices
Observed Afr/Ap 02 May 003/004 Estimated Afr/Ap 03 May 006/006 Predicted Afr/Ap 04 May-06 May 009/008-008/008-006/005
VI. Geomagnetic Activity Probabilities 04 May to 06 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 15% | 05% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 35% | 25% | 15% |
| Major-severe storm | 35% | 20% | 05% |
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