Viewing archive of Wednesday, 17 June 2009
Solar activity report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Report of Solar-Geophysical Activity 2009 Jun 17 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 168 Issued at 2200Z on 17 Jun 2009IA. Analysis of Solar Active Regions and Activity from 16-2100Z to 17-2100Z
Solar activity was very low for the past 24 hours.
New Region 1021 (S16W71) was numbered today.
IB. Solar Activity Forecast
Solar activity is expected to remain
very low for the next three days (18-20 June).
IIA. Geophysical Activity Summary 16-2100Z to 17-2100Z
The geomagnetic field was quiet for the last 24 hours.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to remain quiet for the next three days (18-20 June).
III. Event Probabilities 18 Jun to 20 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 17 Jun 068 Predicted 18 Jun-20 Jun 068/068/068 90 Day Mean 17 Jun 070
V. Geomagnetic A Indices
Observed Afr/Ap 16 Jun 004/003 Estimated Afr/Ap 17 Jun 003/003 Predicted Afr/Ap 18 Jun-20 Jun 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 18 Jun to 20 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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
Gillam, MBNuuk
Latest news
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
Saturday, 22 March 2025
Strong G3 geomagnetic storm watch for 23 March
Latest forum messages
More topicsSupport 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, 11 April 2025
22:39 UTC - Solar flare
Moderate M1.05 flare
22:24 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 50GW at 23:16 UTC
22:24 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.05)
17:09 UTC - Solar flare
Moderate M1.08 flare
16:51 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.04)
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/11 | M1.0 |
| Last geomagnetic storm | 2025/04/06 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 141.4 +7.2 |
| Last 30 days | 137.1 -3 |