Viewing archive of Sunday, 20 February 2011
Solar activity report
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 051 Issued at 2200Z on 20 Feb 2011IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z
IB. Solar Activity Forecast
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
IIB. Geophysical Activity Forecast
III. Event Probabilities 21 Feb to 23 Feb
| Class M | 60% | 60% | 50% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Feb 105 Predicted 21 Feb-23 Feb 100/100/095 90 Day Mean 20 Feb 086
V. Geomagnetic A Indices
Observed Afr/Ap 19 Feb 003/005 Estimated Afr/Ap 20 Feb 004/005 Predicted Afr/Ap 21 Feb-23 Feb 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 21 Feb to 23 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future
Gillam, MB, Yellowknife, NTFairbanks, 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, Iqaluit, NU, Saskatoon, SK, Whitehorse, YTAnchorage, AK, Juneau, AK
Current data suggests there is a slight possibility for aurora to appear at the following middle latitude regions in the near future
Calgary, AB, Winnipeg, MBLatest news
X1.1 solar flare
Coronal hole faces Earth
Strong G3 geomagnetic storm watch for 23 March
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