Viewing archive of Wednesday, 2 June 2010
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 2010 Jun 02 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 153 Issued at 2200Z on 02 Jun 2010IA. Analysis of Solar Active Regions and Activity from 01-2100Z to 02-2100Z Solar activity has been at very low levels for the past
24 hours. Region 1076 (S21W21) has grown in area, sunspot number,
and is magnetically classified as a Beta.
IB. Solar Activity Forecast
Solar activity is expected to remain
at very low levels with a slight chance for C-class events for the
next three days (03-05 June).
IIA. Geophysical Activity Summary 01-2100Z to 02-2100Z
The geomagnetic field has been at quiet to unsettled levels for the
past 24 hours. The ACE spacecraft observations show the continued
presence and of a coronal hole high-speed stream. Throughout the
period, solar wind speeds have decreased from 550 km/s to 427 km/s.
The greater than 2 MeV electron flux at geosynchronous orbit was at
high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels with a chance for isolated
active periods for the next three days (03 - 05 June). Activity on
day one and day two (03-04 June) is due to a recurrent coronal hole
high-speed stream. On day three (05 June), the expected geomagnetic
activity is due to the arrival of the CME observed on May 31/2134Z.
III. Event Probabilities 03 Jun to 05 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 02 Jun 074 Predicted 03 Jun-05 Jun 074/073/072 90 Day Mean 02 Jun 077
V. Geomagnetic A Indices
Observed Afr/Ap 01 Jun 010/012 Estimated Afr/Ap 02 Jun 006/010 Predicted Afr/Ap 03 Jun-05 Jun 008/008-007/008-007/005
VI. Geomagnetic Activity Probabilities 03 Jun to 05 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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