Viewing archive of Thursday, 28 May 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 May 28 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 149 Issued at 2200Z on 28 May 2020IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z 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 (29 May, 30 May, 31 May).
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 317 km/s at 28/1058Z. Total IMF reached 5 nT at
28/1946Z. The maximum southward component of Bz reached -4 nT at
28/1225Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 197 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one, two, and three (29 May,
30 May, 31 May).
III. Event Probabilities 29 May to 31 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 28 May 068 Predicted 29 May-31 May 069/070/070 90 Day Mean 28 May 070
V. Geomagnetic A Indices
Observed Afr/Ap 27 May 006/003 Estimated Afr/Ap 28 May 004/004 Predicted Afr/Ap 29 May-31 May 008/008-008/008-009/008
VI. Geomagnetic Activity Probabilities 29 May to 31 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 25% |
| Major-severe storm | 20% | 20% | 20% |
All times in UTC
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