Viewing archive of Tuesday, 30 March 2021
Solar activity report
Report of Solar-Geophysical Activity 2021 Mar 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 89 Issued at 2200Z on 30 Mar 2021IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z 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 (31 Mar, 01 Apr, 02 Apr).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 402 km/s at 30/2044Z. Total IMF reached 6 nT at
30/1642Z. The maximum southward component of Bz reached -4 nT at
30/1921Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 782 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (31 Mar) and quiet levels
on days two and three (01 Apr, 02 Apr).
III. Event Probabilities 31 Mar to 02 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Mar 080 Predicted 31 Mar-02 Apr 075/075/070 90 Day Mean 30 Mar 076
V. Geomagnetic A Indices
Observed Afr/Ap 29 Mar 003/002 Estimated Afr/Ap 30 Mar 003/004 Predicted Afr/Ap 31 Mar-02 Apr 008/008-006/005-005/005
VI. Geomagnetic Activity Probabilities 31 Mar to 02 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 25% | 15% | 15% |
| Major-severe storm | 25% | 05% | 05% |
All times in UTC
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