Viewing archive of Monday, 7 August 2017
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 2017 Aug 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 219 Issued at 2200Z on 07 Aug 2017IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 1 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a slight chance for a C-class flare on days one and two (08 Aug, 09
Aug) and expected to be very low on day three (10 Aug).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 600 km/s at 06/2100Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 11301 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (08 Aug) and quiet levels
on days two and three (09 Aug, 10 Aug).
III. Event Probabilities 08 Aug to 10 Aug
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Aug 073 Predicted 08 Aug-10 Aug 073/073/073 90 Day Mean 07 Aug 075
V. Geomagnetic A Indices
Observed Afr/Ap 06 Aug 013/012 Estimated Afr/Ap 07 Aug 006/007 Predicted Afr/Ap 08 Aug-10 Aug 007/008-007/006-005/005
VI. Geomagnetic Activity Probabilities 08 Aug to 10 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 10% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 20% | 20% |
| Major-severe storm | 35% | 20% | 15% |
All times in UTC
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