Viewing archive of Saturday, 25 May 2019
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 2019 May 25 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 145 Issued at 2200Z on 25 May 2019IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 0 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
on days one, two, and three (26 May, 27 May, 28 May).
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 353 km/s at 24/2201Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 131 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and two (26 May, 27 May) and quiet to
active levels on day three (28 May).
III. Event Probabilities 26 May to 28 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 May 067 Predicted 26 May-28 May 067/067/067 90 Day Mean 25 May 072
V. Geomagnetic A Indices
Observed Afr/Ap 24 May 006/005 Estimated Afr/Ap 25 May 004/005 Predicted Afr/Ap 26 May-28 May 006/005-006/005-010/012
VI. Geomagnetic Activity Probabilities 26 May to 28 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 25% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 20% |
| Minor storm | 15% | 15% | 30% |
| Major-severe storm | 10% | 10% | 25% |
All times in UTC
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