Viewing archive of Tuesday, 31 March 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Mar 31 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 91 Issued at 2200Z on 31 Mar 2020IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 31-2100Z 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
on days one, two, and three (01 Apr, 02 Apr, 03 Apr).
IIA. Geophysical Activity Summary 30-2100Z to 31-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 534 km/s at 31/1355Z. Total IMF reached 7
nT at 31/0548Z. The maximum southward component of Bz reached -6 nT at
31/0525Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 391 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (01 Apr) and quiet to
unsettled levels on days two and three (02 Apr, 03 Apr).
III. Event Probabilities 01 Apr to 03 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 31 Mar 070 Predicted 01 Apr-03 Apr 070/070/070 90 Day Mean 31 Mar 071
V. Geomagnetic A Indices
Observed Afr/Ap 30 Mar 008/010 Estimated Afr/Ap 31 Mar 013/016 Predicted Afr/Ap 01 Apr-03 Apr 010/012-007/008-008/008
VI. Geomagnetic Activity Probabilities 01 Apr to 03 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 15% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 20% |
| Minor storm | 30% | 25% | 25% |
| Major-severe storm | 40% | 30% | 20% |
All times in UTC
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