Viewing archive of Thursday, 22 May 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 May 22 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 142 Issued at 2200Z on 22 May 2014IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C6 event observed at
22/0310Z from Region 2072 (S18W19). There are currently 5 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low with a
slight chance for an M-class flare on days one, two, and three (23 May,
24 May, 25 May).
IIA. Geophysical Activity Summary 21-2100Z to 22-2100Z
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
375 km/s at 22/1139Z. Total IMF reached 10 nT at 22/2053Z. The maximum
southward component of Bz reached -9 nT at 22/1537Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (23 May) and quiet levels
on days two and three (24 May, 25 May).
III. Event Probabilities 23 May to 25 May
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 22 May 111 Predicted 23 May-25 May 105/105/105 90 Day Mean 22 May 147
V. Geomagnetic A Indices
Observed Afr/Ap 21 May 003/002 Estimated Afr/Ap 22 May 008/010 Predicted Afr/Ap 23 May-25 May 008/008-006/005-006/005
VI. Geomagnetic Activity Probabilities 23 May to 25 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 30% | 15% | 15% |
| Major-severe storm | 20% | 05% | 05% |
All times in UTC
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