Viewing archive of Saturday, 14 September 2013
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 2013 Sep 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 257 Issued at 2200Z on 14 Sep 2013IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z
Solar activity has been at very low levels for the past 24
hours. There are currently 2 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 (15
Sep, 16 Sep, 17 Sep).
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
609 km/s at 14/0604Z. Total IMF reached 7 nT at 13/2238Z. The maximum
southward component of Bz reached -3 nT at 14/0005Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (15 Sep), quiet to active levels on day
two (16 Sep) and quiet to unsettled levels on day three (17 Sep).
III. Event Probabilities 15 Sep to 17 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 14 Sep 093 Predicted 15 Sep-17 Sep 095/095/100 90 Day Mean 14 Sep 113
V. Geomagnetic A Indices
Observed Afr/Ap 13 Sep 010/010 Estimated Afr/Ap 14 Sep 007/007 Predicted Afr/Ap 15 Sep-17 Sep 005/005-011/013-008/010
VI. Geomagnetic Activity Probabilities 15 Sep to 17 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 35% | 25% |
| Minor storm | 01% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 25% |
| Minor storm | 15% | 35% | 35% |
| Major-severe storm | 05% | 45% | 25% |
All times in UTC
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