Viewing archive of Friday, 17 October 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Oct 17 1210 UTC

SIDC Forecast

Solar flares

Active (M-class flares expected, probability >=50%)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
17 Oct 2014	139	008
18 Oct 2014	139	007
19 Oct 2014	139	007

Bulletin

During the past 24 hours, one M flare and four C flares were released by the backside region close to the east limb that produced both M flares on October 14 (probably this region is the return of M-flaring region NOAA AR 2173). The M4.3 flare peaked at 13:03 UT on October 16. In the next 48 hours, M flares are possible, especially from the region near the east limb that has produced the three M flares. Over the last 24 hours the solar wind speeds observed by ACE varied between about 380 and 500 km/s, with current speed values around 435 km/s. The magnitude of the Interplanetary Magnetic Field (IMF) varied between 1.5 and 7.5 nT, with current values around 5.5 nT. Geomagnetic conditions during the last 24 hours were quiet to active (K Dourbes between 1 and 4; NOAA Kp between 1 and 3). Quiet geomagnetic levels (K Dourbes < 4) are expected on October 17, 18 and 19.

Today's estimated international sunspot number (ISN): 044, based on 12 stations.

Solar indices for 16 Oct 2014

Wolf number Catania	///
10cm solar flux	139
AK Chambon La Forêt	018
AK Wingst	008
Estimated Ap	009
Estimated international sunspot number	050 - Based on 17 stations

Noticeable events summary

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

All times in UTC

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