Viewing archive of Wednesday, 25 February 2015
Daily bulletin on solar and geomagnetic activity from the SIDC
Issued: 2015 Feb 25 1235 UTC
SIDC Forecast
Solar flares
Eruptive (C-class flares expected, probability >=50%)
Geomagnetism
Quiet (A<20 and K<4)
Solar protons
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 25 Feb 2015 | 114 | 008 |
| 26 Feb 2015 | 112 | 007 |
| 27 Feb 2015 | 112 | 007 |
Bulletin
No C-class flares in past 24h. A partial halo CME was observed on February 24 at 10:24 UT (first seen by LASCO-C2). It originates from a partially backsided filament eruption around the southeast limb of the Sun. This CME is not expected to hit the Earth. Shortly after (around 11:00 UT) signs of an eruption are seen in NOAA AR 2289 (mostly dimmings), this may correspond to a slow CME (~300 km/s) directed towards the southwest, seen first at 14:24 UT by LASCO-C2. Additionally, a CME erupted at 23:36 UT (Feb 24) from a filament eruption close to NOAA AR 2291, again the speed was low (~200 km/s). These last two CMEs may have a minor influence on Earth by March 1st. Geomagnetic conditions have ranged from quiet to unsettled due to the vanishing effect of a fast speed stream, these conditions are expected to prevail in the next 48h. TODAY'S ESTIMATED ISN : ///, BASED ON /// STATIONS.
Solar indices for 24 Feb 2015
| Wolf number Catania | /// |
| 10cm solar flux | 114 |
| AK Chambon La Forêt | 016 |
| AK Wingst | 027 |
| Estimated Ap | 030 |
| Estimated international sunspot number | 037 - Based on 07 stations |
Noticeable events summary
| Day | Begin | Max | End | Loc | Strength | OP | 10cm | Catania/NOAA | Radio burst types | |
|---|---|---|---|---|---|---|---|---|---|---|
| None | ||||||||||
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
All times in UTC
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