Viewing archive of Thursday, 13 March 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 Mar 13 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 72 Issued at 2200Z on 13 Mar 2014IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a M9 event observed at
12/2234Z from Region 1996 (N14W78). There are currently 7 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be moderate
with a slight chance for an X-class flare on days one, two, and three
(14 Mar, 15 Mar, 16 Mar) because there are large, magnetically complex
regions on the disk.
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
The geomagnetic
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed, as measured by the ACE spacecraft, reached a peak
speed of 504 km/s at 13/2055Z. Total IMF reached 10 nT at 13/0120Z. The
maximum southward component of Bz reached -8 nT at 12/2313Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (14 Mar) and quiet levels
on days two and three (15 Mar, 16 Mar).
III. Event Probabilities 14 Mar to 16 Mar
| Class M | 80% | 80% | 80% |
| Class X | 15% | 15% | 15% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 13 Mar 148 Predicted 14 Mar-16 Mar 145/145/140 90 Day Mean 13 Mar 158
V. Geomagnetic A Indices
Observed Afr/Ap 12 Mar NA/004 Estimated Afr/Ap 13 Mar 011/013 Predicted Afr/Ap 14 Mar-16 Mar 006/008-006/005-006/005
VI. Geomagnetic Activity Probabilities 14 Mar to 16 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| 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% | 05% |
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