Viewing archive of Tuesday, 28 January 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 Jan 28 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 28 Issued at 2200Z on 28 Jan 2014IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a M4 event observed at
27/2210Z from Region 1967 (S14E76). There are currently 6 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a slight chance for an X-class flare on days one, two, and three
(29 Jan, 30 Jan, 31 Jan).
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
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 421 km/s at
28/2046Z. Total IMF reached 12 nT at 28/1800Z. The maximum southward
component of Bz reached -7 nT at 28/1603Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (29 Jan), quiet to active
levels on day two (30 Jan) and quiet levels on day three (31 Jan).
III. Event Probabilities 29 Jan to 31 Jan
| Class M | 60% | 60% | 60% |
| Class X | 10% | 10% | 10% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 28 Jan 157 Predicted 29 Jan-31 Jan 165/170/175 90 Day Mean 28 Jan 151
V. Geomagnetic A Indices
Observed Afr/Ap 27 Jan 003/002 Estimated Afr/Ap 28 Jan 002/003 Predicted Afr/Ap 29 Jan-31 Jan 007/010-012/012-007/008
VI. Geomagnetic Activity Probabilities 29 Jan to 31 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 30% | 15% |
| Minor storm | 05% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 30% | 25% |
| Major-severe storm | 25% | 40% | 25% |
All times in UTC
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