Viewing archive of Sunday, 15 February 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 Feb 15 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 46 Issued at 2200Z on 15 Feb 2015IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 3 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low with a
chance for M-class flares on days one, two, and three (16 Feb, 17 Feb,
18 Feb).
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
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
386 km/s at 15/1742Z. Total IMF reached 11 nT at 15/1336Z. The maximum
southward component of Bz reached -9 nT at 15/0821Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 316 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (16 Feb) and quiet to
unsettled levels on days two and three (17 Feb, 18 Feb).
III. Event Probabilities 16 Feb to 18 Feb
| Class M | 25% | 25% | 25% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Feb 120 Predicted 16 Feb-18 Feb 125/130/130 90 Day Mean 15 Feb 151
V. Geomagnetic A Indices
Observed Afr/Ap 14 Feb 002/002 Estimated Afr/Ap 15 Feb 007/010 Predicted Afr/Ap 16 Feb-18 Feb 012/012-009/010-007/008
VI. Geomagnetic Activity Probabilities 16 Feb to 18 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 15% |
| Minor storm | 10% | 10% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 20% |
| Minor storm | 30% | 30% | 25% |
| Major-severe storm | 45% | 40% | 20% |
All times in UTC
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