Viewing archive of Saturday, 15 February 2014
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 2014 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 2014IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C2 event observed at
15/0318Z from Region 1973 (N06W72). There are currently 5 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate on
days one and two (16 Feb, 17 Feb) and expected to be low with a chance
for M-class flares on day three (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
487 km/s at 15/1239Z. Total IMF reached 16 nT at 15/1338Z. The maximum
southward component of Bz reached -12 nT at 15/2100Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 1235 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (16 Feb), quiet to unsettled
levels on day two (17 Feb) and quiet levels on day three (18 Feb).
III. Event Probabilities 16 Feb to 18 Feb
| Class M | 60% | 60% | 45% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Feb 162 Predicted 16 Feb-18 Feb 160/155/155 90 Day Mean 15 Feb 154
V. Geomagnetic A Indices
Observed Afr/Ap 14 Feb 004/002 Estimated Afr/Ap 15 Feb 010/014 Predicted Afr/Ap 16 Feb-18 Feb 013/015-010/012-006/005
VI. Geomagnetic Activity Probabilities 16 Feb to 18 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 15% | 05% |
| Minor storm | 15% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 30% | 25% | 15% |
| Major-severe storm | 45% | 25% | 05% |
All times in UTC
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