Viewing archive of Monday, 18 May 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 May 18 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 139 Issued at 2200Z on 18 May 2020IA. Analysis of Solar Active Regions and Activity from 17-2100Z to 18-2100Z 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 (19 May, 20 May, 21 May).
IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 340 km/s at 18/1750Z. Total IMF reached 6 nT at
18/1700Z. The maximum southward component of Bz reached -4 nT at
18/1800Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 191 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (19 May, 20 May)
and quiet levels on day three (21 May).
III. Event Probabilities 19 May to 21 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 18 May 070 Predicted 19 May-21 May 070/070/070 90 Day Mean 18 May 070
V. Geomagnetic A Indices
Observed Afr/Ap 17 May 003/003 Estimated Afr/Ap 18 May 004/005 Predicted Afr/Ap 19 May-21 May 008/008-008/008-005/005
VI. Geomagnetic Activity Probabilities 19 May to 21 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 20% |
| Major-severe storm | 25% | 25% | 10% |
All times in UTC
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