Viewing archive of Wednesday, 28 July 1999
Solar activity report
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 209 Issued at 2200Z on 28 JUL 1999IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z
IB. Solar Activity Forecast
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
IIB. Geophysical Activity Forecast
III. Event Probabilities 29 JUL to 31 JUL
| Class M | 80% | 80% | 80% |
| Class X | 15% | 15% | 15% |
| Proton | 15% | 15% | 15% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 28 JUL 198 Predicted 29 JUL-31 JUL 190/190/185 90 Day Mean 28 JUL 159
V. Geomagnetic A Indices
OBSERVED AFR/AP 27 JUL 006/006 ESTIMATED AFR/AP 28 JUL 012/012 PREDICTED AFR/AP 29 JUL-31 JUL 008/008-008/008-005/005
VI. Geomagnetic Activity Probabilities 29 JUL to 31 JUL
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 15% |
| Minor storm | 05% | 05% | 05% |
| 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, Whitehorse, YT, 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, Saskatoon, SKAnchorage, 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
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