Viewing archive of Friday, 14 August 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Aug 14 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Solar protons

Quiet

	10cm flux	Ap
14 Aug 2015	093	007
15 Aug 2015	089	006
16 Aug 2015	086	019

Bulletin

The strongest observed flare, among four C-class flares reported during last 24 hours, was the C1.9 flare peaking at 02:00 UT, on August 14. The flare originated from the fast emerging NOAA AR 2401 which has potential to produce more C-class flares in the coming hours. No Earth directed CMEs were observed during last 24 hours.

The Earth is still inside the slow solar wind with the speed of about 320 km/s. The interplanetary magnetic field magnitude is slightly elevated, having the value of about 8nT. The fast flow from the equatorial coronal hole, which reached the central meridian on August 12 might arrive at the Earth tomorrow. The arrival of a CME-driven shock wave, associated with the partial halo CME from August 12, might be expected in early morning of August 16 possibly producing unsettled to active geomagnetic conditions. The geomagnetic conditions are presently quiet and we expect them to remain so in the coming hours.

Today's estimated international sunspot number (ISN): 044, based on 15 stations.

Solar indices for 13 Aug 2015

Wolf number Catania	///
10cm solar flux	095
AK Chambon La Forêt	009
AK Wingst	013
Estimated Ap	012
Estimated international sunspot number	054 - Based on 21 stations

Noticeable events summary

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

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