Viewing archive of Friday, 14 December 2012
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 2012 Dec 14 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 349 Issued at 2200Z on 14 Dec 2012IA. 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
14/1217Z. There are currently 4 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low on day
one (15 Dec) and likely to be low with a slight chance for an M-class
flare on days two and three (16 Dec, 17 Dec).
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 364 km/s at
14/1948Z. Total IMF reached 9.3 nT at 14/2004Z. The maximum southward
component of Bz reached -6.7 nT at 14/1946Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (15 Dec), quiet to unsettled levels on
day two (16 Dec) and quiet to unsettled levels on day three (17 Dec)
with a chance for active levels.
III. Event Probabilities 15 Dec to 17 Dec
| Class M | 05% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 14 Dec 119 Predicted 15 Dec-17 Dec 120/125/125 90 Day Mean 14 Dec 120
V. Geomagnetic A Indices
Observed Afr/Ap 13 Dec 002/003 Estimated Afr/Ap 14 Dec 003/003 Predicted Afr/Ap 15 Dec-17 Dec 005/005-007/008-014/015
VI. Geomagnetic Activity Probabilities 15 Dec to 17 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 01% | 10% | 15% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 10% | 10% | 15% |
| Major-severe storm | 01% | 05% | 20% |
All times in UTC
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