Viewing archive of Tuesday, 29 October 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 Oct 29 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 302 Issued at 2200Z on 29 Oct 2013IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C9 event observed at
29/1831Z from Region 1875 (N06W92). There are currently 8 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be moderate
with a chance for X-class flares on days one, two, and three (30 Oct, 31
Oct, 01 Nov).
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
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
367 km/s at 29/0940Z. Total IMF reached 12 nT at 29/1225Z. The maximum
southward component of Bz reached -9 nT at 29/1012Z. Protons greater
than 10 MeV at geosynchronous orbit reached a peak level of 4 pfu at
29/0140Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 732 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and three (30 Oct, 01
Nov) and unsettled to minor storm levels on day two (31 Oct). Protons
have a chance of crossing threshold on days one, two, and three (30 Oct,
31 Oct, 01 Nov).
III. Event Probabilities 30 Oct to 01 Nov
| Class M | 60% | 60% | 60% |
| Class X | 25% | 25% | 25% |
| Proton | 25% | 25% | 25% |
| PCAF | yellow | ||
IV. Penticton 10.7 cm Flux
Observed 29 Oct 153 Predicted 30 Oct-01 Nov 150/145/140 90 Day Mean 29 Oct 116
V. Geomagnetic A Indices
Observed Afr/Ap 28 Oct 002/001 Estimated Afr/Ap 29 Oct 006/008 Predicted Afr/Ap 30 Oct-01 Nov 011/012-017/024-010/012
VI. Geomagnetic Activity Probabilities 30 Oct to 01 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 45% | 20% |
| Minor storm | 05% | 20% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 20% | 35% | 25% |
All times in UTC
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