Viewing archive of Tuesday, 1 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 01 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 152 Issued at 2200Z on 01 Jun 2010IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z Solar activity was very low. The SOHO C2 imagery
observed a slow moving CME at 31/2154Z. The plane of sky speed was
estimated around 307 km/s. This event was correlated with a
disappearing filament located near N30W30. No flares were observed
during the past 24 hours.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
The geomagnetic field was at quiet to active levels. The ACE
spacecraft observations show the continued presence of the coronal
hole high speed stream. Solar wind speeds are around 525 km/s with
IMF Bz at +/- 6 nT. The greater than 2 MeV electron flux at
geosynchronous orbit was at high levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled with isolated active conditions
for the next two days (02-03 June). Predominantly quiet levels are
expected for day three (04 June) as the high speed stream subsides.
III. Event Probabilities 02 Jun to 04 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 01 Jun 073 Predicted 02 Jun-04 Jun 072/072/072 90 Day Mean 01 Jun 078
V. Geomagnetic A Indices
Observed Afr/Ap 31 May 014/016 Estimated Afr/Ap 01 Jun 010/012 Predicted Afr/Ap 02 Jun-04 Jun 008/010-006/008-005/005
VI. Geomagnetic Activity Probabilities 02 Jun to 04 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 15% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
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