Välja antud: 2015 Sep 28 1230 UTC
M-class flares expected (probability >=50%)
Quiet (A<20 and K<4)
Warning condition (activity levels expected to increase, but no numeric forecast given)
10cm flux | Ap | |
---|---|---|
28 Sep 2015 | 140 | 004 |
29 Sep 2015 | 140 | 009 |
30 Sep 2015 | 135 | 007 |
Eight sunspot groups are currently visible on the solar disk, with NOAA active regions (AR) 2422 and 2423 as most productive ones. A dozen C-class and three M-class flares were observed, with M3.6 as highest one peaking at 3:55 UT on September 28 originating from NOAA AR 2423. No associated CME was seen in coronagraphic data. A filament eruption occurred in the southeast quadrant, starting around 4:30 UT. Additional M-class flares are expected, with a slight chance for an X-class flares. Due to the position of the productive NOAA AR 2423, we issue the warning level for a potential proton event.
The Earth is inside a slow (currently around 360 km/s) solar wind flow and the interplanetary magnetic field magnitude remains maximally 6 nT. The geomagnetic conditions are quiet and are expected to remain so.
Today's estimated international sunspot number (ISN): 160, based on 16 stations.
Wolf number Catania | /// |
10cm solar flux | 128 |
AK Chambon La Forêt | 008 |
AK Wingst | 004 |
Estimated Ap | 003 |
Estimated international sunspot number | 152 - Based on 27 stations |
Day | Begin | Max | Lõpp | Loc | Strength | OP | 10cm | Catania/NOAA | Radio burst types |
---|---|---|---|---|---|---|---|---|---|
27 | 2054 | 2100 | 2115 | S21W16 | M1.0 | 1N | 39/2422 | III/1 | |
28 | 0345 | 0355 | 0359 | S09W67 | M3.6 | SF | 36/2423 | V/2 | |
28 | 0727 | 0735 | 0746 | S22W20 | M1.1 | 1N | 39/2422 |
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
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