Viewing archive of Monday, 26 January 2015
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 2015 Jan 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 26 Issued at 2200Z on 26 Jan 2015IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z 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
26/0627Z from Region 2271 (N17W04). There are currently 7 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (27 Jan, 28 Jan,
29 Jan).
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
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
406 km/s at 26/0746Z. Total IMF reached 17 nT at 26/0802Z. The maximum
southward component of Bz reached -15 nT at 26/0802Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to active levels on day one (27 Jan), quiet to
unsettled levels on day two (28 Jan) and unsettled levels on day three
(29 Jan).
III. Event Probabilities 27 Jan to 29 Jan
| Class M | 30% | 30% | 30% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Jan 147 Predicted 27 Jan-29 Jan 155/160/160 90 Day Mean 26 Jan 151
V. Geomagnetic A Indices
Observed Afr/Ap 25 Jan 003/004 Estimated Afr/Ap 26 Jan 012/016 Predicted Afr/Ap 27 Jan-29 Jan 012/015-008/010-011/012
VI. Geomagnetic Activity Probabilities 27 Jan to 29 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 30% |
| Minor storm | 15% | 05% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 25% | 25% |
| Major-severe storm | 40% | 30% | 40% |
All times in UTC
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