Viewing archive of Saturday, 2 December 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 336 Issued at 2200Z on 02 Dec 2017IA. Analysis of Solar Active Regions and Activity from 01-2100Z to 02-2100Z
IB. Solar Activity Forecast
IIA. Geophysical Activity Summary 01-2100Z to 02-2100Z
IIB. Geophysical Activity Forecast
III. Event Probabilities 03 Dec to 05 Dec
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 02 Dec 072 Predicted 03 Dec-05 Dec 072/072/072 90 Day Mean 02 Dec 079
V. Geomagnetic A Indices
Observed Afr/Ap 01 Dec 005/005 Estimated Afr/Ap 02 Dec 004/005 Predicted Afr/Ap 03 Dec-05 Dec 006/005-022/032-029/048
VI. Geomagnetic Activity Probabilities 03 Dec to 05 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 30% | 30% |
| Minor storm | 01% | 35% | 40% |
| Major-severe storm | 01% | 20% | 20% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 05% | 05% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 15% | 75% | 79% |
All times in UTC
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
Oulu, Rovaniemi, Sodankylä, UtsjokiKirkenes
Murmansk, Norilsk, Vorkuta
Kiruna, Luleå
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Latest alerts
Strong G3 geomagnetic storm watch for 23 March
Yesterday around 16 UTC an M1.2 solar flare took place around sunspot region 4028. The solar flare triggered a filament eruption which erupted from the center of the earth-facing solar disk.
12:18 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 75GW at 13:10 UTC
03:45 UTC - Geomagnetic activity
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03:15 UTC - Geomagnetic activity
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01:45 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 01:36 UTC
Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/21 | M1.2 |
| Last geomagnetic storm | 2025/03/21 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 140.3 -14.3 |
| Last 30 days | 141.7 -9.5 |