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Solar activity report
Report of Solar-Geophysical Activity 2022 Mar 17 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 76 Issued at 2200Z on 17 Mar 2022IA. Analysis of Solar Active Regions and Activity from 16-2100Z to 17-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C1 event observed at
17/0154Z from Region 2965 (N24W44). There are currently 3 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares and a slight chance for an M-class
flare on days one, two, and three (18 Mar, 19 Mar, 20 Mar).
IIA. Geophysical Activity Summary 16-2100Z to 17-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 388 km/s at 16/2300Z. Total IMF reached 5 nT at
17/0912Z. The maximum southward component of Bz reached -4 nT at
17/0437Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 281 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (18 Mar, 19 Mar)
and unsettled to active levels on day three (20 Mar).
III. Event Probabilities 18 Mar to 20 Mar
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 17 Mar 103 Predicted 18 Mar-20 Mar 100/100/100 90 Day Mean 17 Mar 110
V. Geomagnetic A Indices
Observed Afr/Ap 16 Mar 003/006 Estimated Afr/Ap 17 Mar 008/008 Predicted Afr/Ap 18 Mar-20 Mar 010/010-009/010-011/015
VI. Geomagnetic Activity Probabilities 18 Mar to 20 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 25% | 35% |
| Minor storm | 05% | 10% | 20% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 25% | 25% | 30% |
| Major-severe storm | 30% | 35% | 50% |
All times in UTC
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