Viewing archive of Saturday, 14 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 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 45 Issued at 2200Z on 14 Feb 2015IA. 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 3 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 and a slight chance for an M-class
flare on day one (15 Feb) and likely to be low with a chance for M-class
flares on days two and three (16 Feb, 17 Feb).
IIA. Geophysical Activity Summary 13-2100Z to 14-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 360 km/s at
14/0112Z. Total IMF reached 8 nT at 14/2034Z. The maximum southward
component of Bz reached -5 nT at 14/1535Z. Electrons greater than 2 MeV
at geosynchronous orbit reached a peak level of 318 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on days one and two (15 Feb, 16 Feb) and
quiet to unsettled levels on day three (17 Feb).
III. Event Probabilities 15 Feb to 17 Feb
| Class M | 10% | 25% | 25% |
| Class X | 01% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 14 Feb 120 Predicted 15 Feb-17 Feb 120/125/130 90 Day Mean 14 Feb 152
V. Geomagnetic A Indices
Observed Afr/Ap 13 Feb 002/002 Estimated Afr/Ap 14 Feb 003/003 Predicted Afr/Ap 15 Feb-17 Feb 009/012-012/015-009/010
VI. Geomagnetic Activity Probabilities 15 Feb to 17 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 35% | 30% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 40% | 45% | 40% |
All times in UTC
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