Viewing archive of Friday, 29 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 29 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 180 Issued at 2200Z on 29 Jun 2007IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z Solar activity was low. Region 962 (S10E55) produced a
C1 flare at 29/2013Z. Region 961 (S13E23) remains relatively
unchanged since yesterday.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low. There is a chance for C-class activity from either
Region 961 or 962.
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
The geomagnetic field ranged from quiet to unsettled. Solar wind
speed increased to approximately 500 km/s as a recurrent coronal
hole rotated into a geoeffective position.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled for the next three days (30 June -
02 July). Isolated active periods are possible on 30 June and 01
July due to the coronal hole high speed stream.
III. Event Probabilities 30 Jun to 02 Jul
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 29 Jun 075 Predicted 30 Jun-02 Jul 075/075/075 90 Day Mean 29 Jun 074
V. Geomagnetic A Indices
Observed Afr/Ap 28 Jun 005/006 Estimated Afr/Ap 29 Jun 006/010 Predicted Afr/Ap 30 Jun-02 Jul 008/010-006/008-005/005
VI. Geomagnetic Activity Probabilities 30 Jun to 02 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 15% | 15% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 20% |
| Minor storm | 20% | 15% | 05% |
| Major-severe storm | 05% | 01% | 01% |
All times in UTC
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