Viewing archive of Wednesday, 23 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 23 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 205 Issued at 2200Z on 23 Jul 2008IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity was very low. Region 1000 (S12W44) 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 22-2100Z to 23-2100Z
The geomagnetic field was at quiet to minor storm levels. The solar
wind speed continues elevated to a range of 620 to 650 km/s. The
greater than 2 MeV electron flux at geosynchronous orbit was at high
levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be mostly unsettled during day one (24 July), and quiet
on days two and three (25, 26 July). The effects of the high speed
stream from the coronal hole should diminish during the latter part
of the forecast period.
III. Event Probabilities 24 Jul to 26 Jul
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Jul 066 Predicted 24 Jul-26 Jul 066/066/066 90 Day Mean 23 Jul 067
V. Geomagnetic A Indices
Observed Afr/Ap 22 Jul 009/011 Estimated Afr/Ap 23 Jul 015/015 Predicted Afr/Ap 24 Jul-26 Jul 010/010-005/005-005/005
VI. Geomagnetic Activity Probabilities 24 Jul to 26 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 05% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 05% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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