Viewing archive of Thursday, 28 June 2007
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 2007 Jun 28 2154 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 2007IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z Solar activity was very low. Region 961 (S11E36)
remains relatively unchanged since yesterday. New Region 962
(S12E67) rotated onto the visible disk and is currently classified
as a Bxo beta sunspot group.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low. There is a slight chance for an isolated M-class flare
from Region 962.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled. Isolated active periods are
possible on 29-30 June due to a recurrent coronal hole high speed
stream.
III. Event Probabilities 29 Jun to 01 Jul
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 28 Jun 075 Predicted 29 Jun-01 Jul 080/080/080 90 Day Mean 28 Jun 074
V. Geomagnetic A Indices
Observed Afr/Ap 27 Jun 005/005 Estimated Afr/Ap 28 Jun 004/005 Predicted Afr/Ap 29 Jun-01 Jul 008/008-008/010-006/008
VI. Geomagnetic Activity Probabilities 29 Jun to 01 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 25% | 15% |
| Minor storm | 05% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 35% | 25% |
| Minor storm | 15% | 20% | 15% |
| Major-severe storm | 01% | 05% | 01% |
All times in UTC
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