Vaata laupäev, 14 aprill 2018 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2018 Apr 14 1230 UTC

SIDC Forecast

Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

	10cm flux	Ap
14 Apr 2018	070	005
15 Apr 2018	070	005
16 Apr 2018	069	006

Bulletin

The solar activity has been quiet over the past 24 hours. The active region (NOAA 2704, Mcintosh class: Bxo, Mag. type: Beta) has produced few small flares. The flaring conditions are expected to remain mostly quiet for the next 24-hour period with a small chance of C-class flare.

No Earth directed Coronal Mass Ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The solar wind parameters have shown a return towards the ambient- background and slow solar wind speed regime. The solar wind speed has continuously decreased from around 450 to 390 km/s over the past 24 hours. The total magnetic field strength remained below 6 nT, and the Bz component was fluctuating between -4.5 and +5.7 nT. Solar wind conditions are expected to return to the slow regime by the end of this 24-hour period.

Geomagnetic conditions have been mostly quiet over the past 24 hours. A slightly more active period was observed: local K (Dourbs) was 3 between 22:00 UT on April 13 and 02:00 UT on April 14, and Kp index (NOAA) has reached 4 on April 14 at 01:00 UT. With the decay of the solar wind speed, the geomagnetic conditions are expected to remained mostly quiet for the next period.

Today's estimated international sunspot number (ISN): 000, based on 15 stations.

Solar indices for 13 Apr 2018

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	016
AK Wingst	013
Estimated Ap	013
Estimated international sunspot number	015 - Based on 12 stations

Noticeable events summary

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

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