Viewing archive of Thursday, 29 September 2016
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 2016 Sep 29 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 273 Issued at 2200Z on 29 Sep 2016IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z 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, two, and three (30
Sep, 01 Oct, 02 Oct).
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
The geomagnetic
field has been at active to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 766 km/s at 29/2013Z. Total IMF
reached 9 nT at 29/0350Z. The maximum southward component of Bz reached
-7 nT at 29/0826Z. Electrons greater than 2 MeV at geosynchronous orbit
reached a peak level of 17486 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to major storm levels on day one (30 Sep), unsettled
to minor storm levels on day two (01 Oct) and unsettled to active levels
on day three (02 Oct).
III. Event Probabilities 30 Sep to 02 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 29 Sep 083 Predicted 30 Sep-02 Oct 081/078/080 90 Day Mean 29 Sep 086
V. Geomagnetic A Indices
Observed Afr/Ap 28 Sep 024/039 Estimated Afr/Ap 29 Sep 028/046 Predicted Afr/Ap 30 Sep-02 Oct 024/038-024/030-017/020
VI. Geomagnetic Activity Probabilities 30 Sep to 02 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 35% | 30% |
| Minor storm | 20% | 15% | 10% |
| Major-severe storm | 10% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 20% |
| Minor storm | 25% | 20% | 15% |
| Major-severe storm | 35% | 30% | 15% |
All times in UTC
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