Viewing archive of Sunday, 18 June 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Jun 18 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 169 Issued at 2200Z on 18 Jun 2023IA. Analysis of Solar Active Regions and Activity from 17-2100Z to 18-2100Z
IB. Solar Activity Forecast
IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z
IIB. Geophysical Activity Forecast
III. Event Probabilities 19 Jun to 21 Jun
| Class M | 40% | 40% | 40% |
| Class X | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 18 Jun 164 Predicted 19 Jun-21 Jun 160/155/160 90 Day Mean 18 Jun 153
V. Geomagnetic A Indices
Observed Afr/Ap 17 Jun 008/008 Estimated Afr/Ap 18 Jun 009/008 Predicted Afr/Ap 19 Jun-21 Jun 011/012-010/012-008/010
VI. Geomagnetic Activity Probabilities 19 Jun to 21 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 15% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 35% | 35% | 20% |
All times in UTC
Current data suggests there is a high possibility for aurora to appear at the following high latitude regions in the near future
NuukRovaniemi, Sodankylä
Reykjavik
Tromsø
Murmansk
Kiruna
Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future
TórshavnOulu, Utsjoki
Kirkenes, Trondheim
Arkhangelsk
Luleå, Umeå
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
KuopioBergen
Sundsvall
Current data suggests there is a slight possibility for aurora to appear at the following middle latitude regions in the near future
TamperePetrozavodsk
Latest news
Coronal hole faces Earth
X2.0 solar flare from sunspot region 4001
Coronal hole faces Earth, Minor G1 geomagnetic storm watch
Latest forum messages
Support SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Latest alerts
Friday, 21 March 2025
23:45 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 23:30 UTC
23:12 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 77GW at 00:01 UTC
19:39 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 53GW at 20:34 UTC
19:00 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 18:55 UTC
17:45 UTC - Geomagnetic activity
Active geomagnetic conditions (Kp4) Threshold Reached: 17:30 UTC
Space weather facts
| Last X-flare | 2025/02/23 | X2.0 |
| Last M-flare | 2025/03/21 | M1.2 |
| Last geomagnetic storm | 2025/03/14 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| March 2025 | 138.4 -16.2 |
| Last 30 days | 140.3 -10.9 |