Viewing archive of Monday, 28 July 2008
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 2008 Jul 28 2203 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 28 Jul 2008IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z Solar activity was very low. The visible disk is
spotless. No flares occurred during the past 24 hours.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic field was quiet to active. Active to unsettled
conditions were observed from 27/2100Z to 28/0900Z, associated with
a slight increase in solar wind velocity (up to 460 km/s) observed
at ACE. Activity declined to quiet levels for the remainder of the
period.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the next three days (29-31 July).
III. Event Probabilities 29 Jul to 31 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 Jul 066 Predicted 29 Jul-31 Jul 066/066/066 90 Day Mean 28 Jul 067
V. Geomagnetic A Indices
Observed Afr/Ap 27 Jul 004/007 Estimated Afr/Ap 28 Jul 005/008 Predicted Afr/Ap 29 Jul-31 Jul 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 29 Jul to 31 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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