Viewing archive of Thursday, 14 February 2013
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 2013 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 2013IA. Analysis of Solar Active Regions and Activity from 13-2100Z to 14-2100Z 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
14/0430Z from Region 1670 (N17W69). There are currently 2 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for C-class flares on day one (15 Feb) and very low with a
slight chance for C-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 to active levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
409 km/s at 14/0940Z. Total IMF reached 10.6 nT at 13/2141Z. The maximum
southward component of Bz reached -9.8 nT at 13/2141Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels for the next three days (15 Feb, 16 Feb, 17 Feb).
III. Event Probabilities 15 Feb to 17 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 14 Feb 100 Predicted 15 Feb-17 Feb 100/100/105 90 Day Mean 14 Feb 117
V. Geomagnetic A Indices
Observed Afr/Ap 13 Feb 009/010 Estimated Afr/Ap 14 Feb 010/010 Predicted Afr/Ap 15 Feb-17 Feb 006/005-006/005-006/008
VI. Geomagnetic Activity Probabilities 15 Feb to 17 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 10% | 05% | 10% |
All times in UTC
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