Viewing archive of Saturday, 1 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 01 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 32 Issued at 2200Z on 01 Feb 2014IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M3 event observed at
01/0723Z from Region 1967 (S13E16). There are currently 3 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 day one (02 Feb) and likely
to be moderate with a slight chance for an X-class flare on days two and
three (03 Feb, 04 Feb).
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
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 377 km/s at
01/1923Z. Total IMF reached 6 nT at 01/1954Z. The maximum southward
component of Bz reached -5 nT at 01/1927Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on day one (02 Feb), quiet to
active levels on day two (03 Feb) and quiet levels on day three (04
Feb).
III. Event Probabilities 02 Feb to 04 Feb
| Class M | 75% | 60% | 60% |
| Class X | 15% | 15% | 15% |
| Proton | 01% | 01% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 01 Feb 177 Predicted 02 Feb-04 Feb 180/180/185 90 Day Mean 01 Feb 152
V. Geomagnetic A Indices
Observed Afr/Ap 31 Jan 002/000 Estimated Afr/Ap 01 Feb 002/004 Predicted Afr/Ap 02 Feb-04 Feb 013/005-010/018-006/012
VI. Geomagnetic Activity Probabilities 02 Feb to 04 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 05% |
| Minor storm | 15% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 25% | 25% | 15% |
| Major-severe storm | 45% | 25% | 05% |
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