Välja antud: 2014 Sep 27 1234 UTC
Active (M-class flares expected, probability >=50%)
Active conditions expected (A>=20 or K=4)
Quiet
10cm flux | Ap | |
---|---|---|
27 Sep 2014 | 173 | 016 |
28 Sep 2014 | 176 | 013 |
29 Sep 2014 | 179 | 007 |
Solar activity has been at low to moderate level. The largest flare occurred during a GOES 15 data gap. From PROBA2/LYRA data it is derived to be of M1 magnitude. Its peak was reported to have occurred at 8:37 UT. The second strongest event was a C7.9 flare originating from NOAA AR 2177 peaking at 16:18 UT. Some further C flares were reported including from regions 2172 and 2173. Further growth was recorded in the main regions at play 2175, 2172 and 2173. The occurrence of M class flares has become quite possible or even likely. No Earth directed CME's were recorded. Solar wind speed decreased slightly from around 460 km/s to around 420 km/s. Total magnetic field was variable mainly within the 5 to 7 nT range. Some periods with dominant negative Bz (peaks to under -6nT) were observed at the start of the reporting period as well as after UT midnight. Geomagnetic conditions were quiet to active (both NOAA Kp and local K Dourbes 2-4). Quiet to active geomagnetic conditions are expected in the first two days with later quiet to unsettled conditions.
Today's estimated international sunspot number (ISN): 109, based on 10 stations.
Wolf number Catania | /// |
10cm solar flux | 170 |
AK Chambon La Forêt | 028 |
AK Wingst | 017 |
Estimated Ap | 018 |
Estimated international sunspot number | 122 - Based on 14 stations |
Day | Begin | Max | Lõpp | Loc | Strength | OP | 10cm | Catania/NOAA | Radio burst types |
---|---|---|---|---|---|---|---|---|---|
27 | 0832 | 0837 | 0840 | ---- | M1.0 | --/---- |
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
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