Viewing archive of Thursday, 4 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 04 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 155 Issued at 2200Z on 04 Jun 2009IA. Analysis of Solar Active Regions and Activity from 03-2100Z to 04-2100Z
Solar activity was very low. There were three low level
B-class flares during the past 24 hours. Region 1019 (N24W10)
continues to be the only spotted region on the disk and was quiet
and stable.
IB. Solar Activity Forecast
Solar activity is expected to remain
very low.
IIA. Geophysical Activity Summary 03-2100Z to 04-2100Z
The geomagnetic field was mostly quiet during the past 24 hours.
There was one unsettled period from 0300-0600Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the next three days (5-7 June).
III. Event Probabilities 05 Jun to 07 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 04 Jun 071 Predicted 05 Jun-07 Jun 071/071/071 90 Day Mean 04 Jun 070
V. Geomagnetic A Indices
Observed Afr/Ap 03 Jun 004/004 Estimated Afr/Ap 04 Jun 005/005 Predicted Afr/Ap 05 Jun-07 Jun 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 05 Jun to 07 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, MB, Iqaluit, NUNuuk
Reykjavik
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
AR4048 123Aurora photography hints for those of us with smartphones 66AR 4054 20New satellites - Proba-3, PUNCH, SWFO-L1, GOES-U/19 46Incoming & Unnumbered Active Regions 1672
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
00:55 UTC - Coronal hole
A southern hemisphere coronal hole is facing Earth. Enhanced solar wind could arrive in ~3 days
Monday, 7 April 2025
20:45 UTC - Geomagnetic activity
Active geomagnetic conditions (Kp4) Threshold Reached: 20:39 UTC
17:33 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 51GW at 18:18 UTC
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/05 | 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 | 148.7 +14.5 |
| Last 30 days | 134.1 -5.6 |