Viewing archive of Tuesday, 18 November 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Nov 18 1208 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
18 Nov 2014	167	015
19 Nov 2014	169	013
20 Nov 2014	175	013

Bulletin

Although NOAA AR 2209 maintains the beta-gamma-delta configuration of its photospheric magnetic field, it produced only two weak C-class flares during the past 24 hours. The strongest flare was the C1.8 flare peaking at 08:09 UT today. It was not associated with a CME. No other active region produced C-class flares. We expect flaring activity on the C-level to continue in the NOAA AR 2209, with an M-class flare possible but unlikely. The Earth is currently inside a slow (around 450 km/s) solar wind flow with average (5-6 nT) interplanetary magnetic field (IMF) magnitude. Even if the IMF was strongly fluctuating, it was directed predominantly southward during several hours yesterday, resulting in intervals of active geomagnetic conditions (K = 4) reported by Dourbes (one interval) and IZMIRAN (two intervals). Other than that, the geomagnetic conditions are quiet and are expected to remain so, possibly with isolated intervals of active conditions.

Today's estimated international sunspot number (ISN): 066, based on 08 stations.

Solar indices for 17 Nov 2014

Wolf number Catania	///
10cm solar flux	168
AK Chambon La Forêt	022
AK Wingst	012
Estimated Ap	012
Estimated international sunspot number	073 - Based on 17 stations

Noticeable events summary

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

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