Viewing archive of Thursday, 24 April 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 Apr 24 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 114 Issued at 2200Z on 24 Apr 2014IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C3 event observed at
23/2353Z from Region 2044 (S18E04). There are currently 5 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low with a
chance for M-class flares on days one and two (25 Apr, 26 Apr) and
expected to be very low with a chance for a C-class flares and a slight
chance for an M-class flare on day three (27 Apr).
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
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
505 km/s at 24/1954Z. Total IMF reached 6 nT at 24/0222Z. The maximum
southward component of Bz reached -6 nT at 23/2222Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 162 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (25 Apr) and quiet levels
on days two and three (26 Apr, 27 Apr).
III. Event Probabilities 25 Apr to 27 Apr
| Class M | 25% | 25% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 24 Apr 130 Predicted 25 Apr-27 Apr 125/120/118 90 Day Mean 24 Apr 156
V. Geomagnetic A Indices
Observed Afr/Ap 23 Apr 006/005 Estimated Afr/Ap 24 Apr 008/008 Predicted Afr/Ap 25 Apr-27 Apr 008/008-006/005-006/005
VI. Geomagnetic Activity Probabilities 25 Apr to 27 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 05% | 05% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 30% | 15% | 15% |
| Major-severe storm | 30% | 05% | 05% |
All times in UTC
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