Viewing archive of Wednesday, 29 July 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 Jul 29 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 210 Issued at 2200Z on 29 Jul 2009IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z Solar activity was very low. No flares occurred during
the past 24 hours. The solar disk was void of sunspots.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
The geomagnetic field was quiet during the past 24 hours.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the first day (30 July). Quiet to
unsettled conditions with a slight chance for isolated active
periods are expected for the second and third day (31 July - 01
August) due to a favorably positioned coronal hole.
III. Event Probabilities 30 Jul to 01 Aug
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 29 Jul 068 Predicted 30 Jul-01 Aug 068/068/068 90 Day Mean 29 Jul 069
V. Geomagnetic A Indices
Observed Afr/Ap 28 Jul 003/004 Estimated Afr/Ap 29 Jul 002/005 Predicted Afr/Ap 30 Jul-01 Aug 005/005-007/007-007/007
VI. Geomagnetic Activity Probabilities 30 Jul to 01 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 20% | 20% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 20% | 20% |
| Minor storm | 01% | 10% | 10% |
| Major-severe storm | 01% | 05% | 05% |
All times in UTC
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