Viewing archive of Friday, 13 November 2015
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 2015 Nov 13 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 317 Issued at 2200Z on 13 Nov 2015IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C1 event observed at
13/0128Z from Region 2452 (S08E14). There are currently 4 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 on days one, two, and three (14 Nov,
15 Nov, 16 Nov).
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
492 km/s at 13/2018Z. Total IMF reached 11 nT at 13/1439Z. The maximum
southward component of Bz reached -8 nT at 13/1320Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 88813 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to minor storm levels on day one (14 Nov), quiet to
active levels on day two (15 Nov) and quiet to unsettled levels on day
three (16 Nov).
III. Event Probabilities 14 Nov to 16 Nov
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 13 Nov 103 Predicted 14 Nov-16 Nov 105/105/100 90 Day Mean 13 Nov 105
V. Geomagnetic A Indices
Observed Afr/Ap 12 Nov 004/003 Estimated Afr/Ap 13 Nov 013/015 Predicted Afr/Ap 14 Nov-16 Nov 017/022-011/012-007/008
VI. Geomagnetic Activity Probabilities 14 Nov to 16 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 30% | 15% |
| Minor storm | 20% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 20% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 55% | 40% | 20% |
All times in UTC
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