Viewing archive of Wednesday, 1 February 2017
Solar activity report
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 32 Issued at 2200Z on 01 Feb 2017IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z
IB. Solar Activity Forecast
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
IIB. Geophysical Activity Forecast
III. Event Probabilities 02 Feb to 04 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 01 Feb 076 Predicted 02 Feb-04 Feb 076/076/075 90 Day Mean 01 Feb 077
V. Geomagnetic A Indices
Observed Afr/Ap 31 Jan 016/017 Estimated Afr/Ap 01 Feb 020/028 Predicted Afr/Ap 02 Feb-04 Feb 014/018-014/016-012/014
VI. Geomagnetic Activity Probabilities 02 Feb to 04 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 30% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 30% | 35% |
| Major-severe storm | 45% | 35% | 35% |
All times in UTC
Latest news
X4.0 solar flare
X5.1 solar flare, G4 geomagnetic storm watch
X1.2 solar flare with earth-directed CME
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Latest alerts
Friday, 14 November 2025
21:51 UTC - Solar flare
Moderate M1.33 flare from sunspot region 4274
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Minor R1 radio blackout in progress (≥M1 - current: M1.33)
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| Last M-flare | 2025/11/14 | M1.3 |
| Last geomagnetic storm | 2025/11/13 | Kp7+ (G3) |
| Spotless days | |
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| Monthly mean Sunspot Number | |
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