Visualizzazione archivio di martedì, 27 maggio AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2014 May 27 1214 UTC

SIDC Forecast

Valid from 1230 UTC, 27 May 2014 until 29 May 2014
Brillamenti solari

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
27 May 2014103003
28 May 2014100005
29 May 2014100007

Bulletin

There are currently 5 sunspot groups visible on the solar disk, all having simple magnetic configurations. The only region that has been actively flaring over the last 24 hours, was NOAA 2065 which has rounded the west limb. It produced all 5 C-flares of the period, the strongest a C2.1 flare peaking at 16:07UT on 26 May. No CME was associated to this event. A CME at the west limb was observed starting at 21:48UT (CACTUS), probably associated to further low-level C-class flaring in NOAA 2065. This CME was not Earth-directed. Quiet flaring conditions are expected, with a small chance on a C-class flare produced by NOAA 2065 from behind the west limb. Solar wind speed decreased from 350 to 300 km/s, with Bz varying between +2 and -2 nT. The geomagnetic field was quiet. A small coronal hole that passed the CM on 25-26 May could influence the geomagnetic field starting 29 May. Geomagnetic conditions are expected to be quiet, though locally a brief active episode on 29 May is not excluded.

Today's estimated international sunspot number (ISN): 056, based on 09 stations.

Solar indices for 26 May 2014

Wolf number Catania092
10cm solar flux108
AK Chambon La Forêt005
AK Wingst002
Estimated Ap002
Estimated international sunspot number071 - Based on 21 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
Nessuna

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

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Notizie sul meteo spaziale

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