Viewing archive of Tuesday, 26 July 2005
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 2005 Jul 26 2206 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 207 Issued at 2200Z on 26 Jul 2005IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity has been very low. Region 791 (N13E09)
has produced several B-class flares during the last 24 hours. Three
backside CME's were observed on LASCO imagery during the period.
None appear to be Earth directed.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low. A chance for an isolated C-class event is possible from
Region 791.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field was predominately quiet with one period of
unsettled conditions at middle latitudes. The greater than 2 MeV
electron flux at geosynchronous orbit was at high levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled with isolated active conditions
possible. These effects are possible as a recurrent coronal hole
high speed solar wind stream moves into geoeffective position.
III. Event Probabilities 27 Jul to 29 Jul
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Jul 087 Predicted 27 Jul-29 Jul 090/100/105 90 Day Mean 26 Jul 097
V. Geomagnetic A Indices
Observed Afr/Ap 25 Jul 003/006 Estimated Afr/Ap 26 Jul 005/005 Predicted Afr/Ap 27 Jul-29 Jul 008/010-010/015-010/012
VI. Geomagnetic Activity Probabilities 27 Jul to 29 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
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