Viewing archive of Sunday, 31 May 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 May 31 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 151 Issued at 2200Z on 31 May 2009IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 31-2100Z Solar activity was very low. No flares were observed
during the past 24 hours. New Region 1019 (N27E41) formed on the
disk and was classified as a Bxo beta spot group.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 30-2100Z to 31-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for 01-02 June. Quiet to unsettled levels, with
isolated active conditions possible at high latitudes, are expected
on 03 June
III. Event Probabilities 01 Jun to 03 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 31 May 069 Predicted 01 Jun-03 Jun 070/070/070 90 Day Mean 31 May 070
V. Geomagnetic A Indices
Observed Afr/Ap 30 May 002/003 Estimated Afr/Ap 31 May 001/005 Predicted Afr/Ap 01 Jun-03 Jun 005/005-005/005-007/008
VI. Geomagnetic Activity Probabilities 01 Jun to 03 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 10% | 15% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
Latest news
Saturday, 14 September 2024
X4.5 solar flare with a fast coronal mass ejection
Thursday, 12 September 2024
G3 geomagnetic storm watch due to CME passage
Monday, 12 August 2024
Severe G4 geomagnetic storm
Latest forum messages
Incoming & Unnumbered Active Regions 1005AR 13831 13Positive polarity coronal hole influence 13Unspecified Solar Activity 9Space Weather Memes 494
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!
Space weather facts
| Last X-flare | 2024/09/14 | X4.54 |
| Last M-flare | 2024/09/14 | M3.0 |
| Last geomagnetic storm | 2024/09/17 | Kp8- (G4) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| August 2024 | 215.5 +19 |
| September 2024 | 146.1 -69.4 |
| Last 30 days | 152.7 -59.2 |