Viewing archive of Tuesday, 17 November 1998
Solar activity report
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 321 Issued at 2200Z on 17 NOV 1998IA. Analysis of Solar Active Regions and Activity from 16-2100Z to 17-2100Z
IB. Solar Activity Forecast
IIA. Geophysical Activity Summary 16-2100Z to 17-2100Z
IIB. Geophysical Activity Forecast
III. Event Probabilities 18 NOV to 20 NOV
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 17 NOV 121 Predicted 18 NOV-20 NOV 120/120/115 90 Day Mean 17 NOV 131
V. Geomagnetic A Indices
OBSERVED AFR/AP 16 NOV 006/007 ESTIMATED AFR/AP 17 NOV 005/008 PREDICTED AFR/AP 18 NOV-20 NOV 025/030-025/035-010/015
VI. Geomagnetic Activity Probabilities 18 NOV to 20 NOV
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 50% | 50% | 15% |
| Minor storm | 20% | 20% | 05% |
| Major-severe storm | 10% | 10% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 55% | 55% | 20% |
| Minor storm | 25% | 25% | 10% |
| Major-severe storm | 15% | 15% | 05% |
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
Oulu, Rovaniemi, SodankyläLuleå
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
KuopioBergen, Trondheim
Arkhangelsk
Sundsvall, Umeå
Current data suggests there is a slight possibility for aurora to appear at the following middle latitude regions in the near future
Tampere, TurkuPetrozavodsk
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Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 19:44 UTC
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Minor G1 geomagnetic storm (Kp5) Threshold Reached: 18:59 UTC
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Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/15 | M1.2 |
| Last geomagnetic storm | 2025/04/06 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
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| April 2025 | 128.8 -5.4 |
| Last 30 days | 129.1 -15.1 |