Viewing archive of Friday, 12 February 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 Feb 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 43 Issued at 2200Z on 12 Feb 2016IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
12/1047Z from Region 2497 (N13W19). There are currently 5 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (13 Feb, 14 Feb,
15 Feb).
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
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
375 km/s at 12/0249Z. Total IMF reached 16 nT at 12/1938Z. The maximum
southward component of Bz reached -11 nT at 12/0752Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (13 Feb) and quiet to
minor storm levels on days two and three (14 Feb, 15 Feb). Protons have
a slight chance of crossing threshold on days one, two, and three (13
Feb, 14 Feb, 15 Feb).
III. Event Probabilities 13 Feb to 15 Feb
| Class M | 35% | 35% | 35% |
| Class X | 05% | 05% | 05% |
| Proton | 15% | 15% | 15% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Feb 112 Predicted 13 Feb-15 Feb 109/107/107 90 Day Mean 12 Feb 109
V. Geomagnetic A Indices
Observed Afr/Ap 11 Feb 008/009 Estimated Afr/Ap 12 Feb 012/014 Predicted Afr/Ap 13 Feb-15 Feb 010/010-011/012-019/027
VI. Geomagnetic Activity Probabilities 13 Feb to 15 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 35% | 40% |
| Minor storm | 05% | 15% | 20% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 10% |
| Minor storm | 25% | 30% | 30% |
| Major-severe storm | 25% | 50% | 60% |
All times in UTC
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