Viewing archive of Saturday, 21 March 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Mar 21 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 81 Issued at 2200Z on 21 Mar 2020IA. Analysis of Solar Active Regions and Activity from 20-2100Z to 21-2100Z 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 (22 Mar, 23 Mar, 24 Mar).
IIA. Geophysical Activity Summary 20-2100Z to 21-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 525 km/s at 21/0957Z. Total IMF reached 7
nT at 21/0237Z. The maximum southward component of Bz reached -4 nT at
21/0414Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 264 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (22 Mar, 23 Mar)
and quiet levels on day three (24 Mar).
III. Event Probabilities 22 Mar to 24 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 21 Mar 071 Predicted 22 Mar-24 Mar 071/071/071 90 Day Mean 21 Mar 071
V. Geomagnetic A Indices
Observed Afr/Ap 20 Mar 005/007 Estimated Afr/Ap 21 Mar 008/008 Predicted Afr/Ap 22 Mar-24 Mar 008/008-008/008-006/005
VI. Geomagnetic Activity Probabilities 22 Mar to 24 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 10% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 15% |
| Major-severe storm | 30% | 20% | 10% |
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