Viewing archive of Tuesday, 27 May 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 May 27 1214 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
27 May 2014	103	003
28 May 2014	100	005
29 May 2014	100	007

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 Catania	092
10cm solar flux	108
AK Chambon La Forêt	005
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	071 - Based on 21 stations

Noticeable events summary

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

All times in UTC

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