Prohlížíte si archiv úterý 18. února 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2020 Feb 18 1231 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

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

Sluneční protony

Quiet

	10cm flux	Ap
18 Feb 2020	071	017
19 Feb 2020	071	012
20 Feb 2020	071	007

Bulletin

No active regions visible on the Sun. No flares observed, nor expected.

No Earth directed CMEs in the past 24 h. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 380 km/s with interplanetary magnetic field magnitude of 7 nT (with Bz up to -7 nT). Quiet to unsettled geomagnetic conditions have been observed in the past 24 h locally at Dourbes (K = 1-3), and one active period observed at planetary level (Kp = 4). The solar wind from a weak and patchy negative polarity coronal hole could be influencing the Earth, the same situation can be expected for the coming days.

Today's estimated international sunspot number (ISN): 000, based on 24 stations.

Solar indices for 17 Feb 2020

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	019
AK Wingst	///
Estimated Ap	011
Estimated international sunspot number	000 - Based on 28 stations

Noticeable events summary

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

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