Viewing archive of Sunday, 28 June 2009
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 2009 Jun 28 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 179 Issued at 2200Z on 28 Jun 2009IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z Solar activity was very low. No flares were detected.
The visible disk was spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
Geomagnetic field activity ranged from quiet to active levels. Active
levels occurred after 28/1700Z. ACE solar wind data indicated the
active levels were associated with periods of increased velocities
(peak 426 km/sec at 28/2042Z), sustained southward IMF Bz (minimum
-12 nT at 28/1917Z), and enhanced IMF Bt (peak 12 nT at 28/1918Z);
all of which were associated with a favorably positioned coronal
hole.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be at predominantly quiet levels with a chance for
unsettled levels through the period (29 June - 01 July).
III. Event Probabilities 29 Jun to 01 Jul
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 28 Jun 067 Predicted 29 Jun-01 Jul 067/067/067 90 Day Mean 28 Jun 070
V. Geomagnetic A Indices
Observed Afr/Ap 27 Jun 004/003 Estimated Afr/Ap 28 Jun 008/010 Predicted Afr/Ap 29 Jun-01 Jul 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 29 Jun to 01 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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