Viewing archive of Monday, 14 May 2012
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 2012 May 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 135 Issued at 2200Z on 14 May 2012IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z Solar activity was low. Region 1476 (N09W46) remains
the largest and most active complex on the solar disk, but has also
shown signs of decay. Two CMEs were observed off the east limb
during the period, but neither appears to have a potential earthward
component.
IB. Solar Activity Forecast
Solar activity is forecast to be very
low to low during the period. A slight chance for an M-class flare
exists and will likely remain so, until Region 1476 either rotates
off the west limb or exhibits further decay.
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
The geomagnetic field was mostly quiet, with intermittent active
periods observed during nighttime (North America) hours. The greater
than 2 MeV electron flux at geosynchronous orbit reached high levels
during the period.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be unsettled to active on day 1 (15 May), with the
anticipated arrival of a CME observed on 12 May. Residual unsettled
conditions are possible on day 2 (16 May), before a full recovery to
mostly quiet conditions is forecast for day 3 (17 May).
III. Event Probabilities 15 May to 17 May
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 14 May 130 Predicted 15 May-17 May 130/130/128 90 Day Mean 14 May 114
V. Geomagnetic A Indices
Observed Afr/Ap 13 May 010/014 Estimated Afr/Ap 14 May 007/007 Predicted Afr/Ap 15 May-17 May 010/012-008/008-004/005
VI. Geomagnetic Activity Probabilities 15 May to 17 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 15% | 10% |
| Minor storm | 15% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 40% | 20% | 10% |
| Minor storm | 20% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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