Viewing archive of Sunday, 23 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 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 54 Issued at 2200Z on 23 Feb 2014IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
23/0610Z. There are currently 6 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 (24 Feb, 25 Feb,
26 Feb).
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
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
524 km/s at 23/0544Z. Total IMF reached 12 nT at 23/1414Z. The maximum
southward component of Bz reached -11 nT at 23/1434Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 2779 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (24 Feb, 25 Feb)
and quiet levels on day three (26 Feb).
III. Event Probabilities 24 Feb to 26 Feb
| Class M | 50% | 50% | 50% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Feb 172 Predicted 24 Feb-26 Feb 175/175/175 90 Day Mean 23 Feb 156
V. Geomagnetic A Indices
Observed Afr/Ap 22 Feb 011/013 Estimated Afr/Ap 23 Feb 012/016 Predicted Afr/Ap 24 Feb-26 Feb 009/010-009/008-006/005
VI. Geomagnetic Activity Probabilities 24 Feb to 26 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 20% | 15% |
| Major-severe storm | 20% | 20% | 05% |
All times in UTC
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