Viewing archive of Saturday, 16 April 2022

Solar activity report

Report of Solar-Geophysical Activity 2022 Apr 16 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 106 Issued at 2200Z on 16 Apr 2022

IA. Analysis of Solar Active Regions and Activity from 15-2100Z to 16-2100Z

Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M1 event observed at 16/1456Z. There are currently 3 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate on days one, two, and three (17 Apr, 18 Apr, 19 Apr).
IIA. Geophysical Activity Summary 15-2100Z to 16-2100Z
The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 654 km/s at 16/0017Z. Total IMF reached 8 nT at 16/0158Z. The maximum southward component of Bz reached 0 nT at 15/2233Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 1233 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on days one and two (17 Apr, 18 Apr) and quiet to unsettled levels on day three (19 Apr).
III. Event Probabilities 17 Apr to 19 Apr
Class M60%60%60%
Class X05%05%05%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       16 Apr 122
  Predicted   17 Apr-19 Apr 125/125/125
  90 Day Mean        16 Apr 113

V. Geomagnetic A Indices
  Observed Afr/Ap 15 Apr  014/017
  Estimated     Afr/Ap 16 Apr  008/008
  Predicted    Afr/Ap 17 Apr-19 Apr  011/012-011/012-009/010

VI. Geomagnetic Activity Probabilities 17 Apr to 19 Apr
A. Middle Latitudes
Active30%30%25%
Minor storm10%10%05%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm25%25%30%
Major-severe storm40%40%30%

All times in UTC

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Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future

Whitehorse, YT
Fairbanks, AK

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Edmonton, AB, Gillam, MB, Saskatoon, SK, Yellowknife, NT
Anchorage, AK, Juneau, AK

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