Viewing archive of Wednesday, 30 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 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 242 Issued at 2200Z on 30 Aug 2017IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C5 event observed at
30/1845Z from Region 2674 (N14E64). There are currently 3 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares and a slight chance for an M-class
flare on days one, two, and three (31 Aug, 01 Sep, 02 Sep).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 408 km/s at 30/0012Z. Total IMF reached 10
nT at 29/2100Z. The maximum southward component of Bz reached -4 nT at
30/0112Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at active to minor storm levels on days one and two (31 Aug, 01
Sep) and unsettled to active levels on day three (02 Sep).
III. Event Probabilities 31 Aug to 02 Sep
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Aug 087 Predicted 31 Aug-02 Sep 089/091/091 90 Day Mean 30 Aug 077
V. Geomagnetic A Indices
Observed Afr/Ap 29 Aug 010/011 Estimated Afr/Ap 30 Aug 008/008 Predicted Afr/Ap 31 Aug-02 Sep 021/030-023/035-015/020
VI. Geomagnetic Activity Probabilities 31 Aug to 02 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 30% |
| Minor storm | 30% | 30% | 10% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 30% | 20% | 20% |
All times in UTC
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