Viewing archive of Sunday, 22 May 2016
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 2016 May 22 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 143 Issued at 2200Z on 22 May 2016IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 1 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares 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 reached a peak of 706 km/s at 22/0402Z. Total IMF reached 9
nT at 21/2100Z. The maximum southward component of Bz reached -6 nT at
21/2210Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 429 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active 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 | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 22 May 097 Predicted 23 May-25 May 095/095/095 90 Day Mean 22 May 093
V. Geomagnetic A Indices
Observed Afr/Ap 21 May 016/018 Estimated Afr/Ap 22 May 011/012 Predicted Afr/Ap 23 May-25 May 009/010-005/005-006/005
VI. Geomagnetic Activity Probabilities 23 May to 25 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 30% | 15% | 10% |
All times in UTC
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