Visualizzazione archivio di sabato, 22 febbraio AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2020 Feb 22 1231 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
22 Feb 2020	071	011
23 Feb 2020	071	013
24 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 480 km/s with interplanetary magnetic field magnitude of 4 nT. Mostly quiet to unsettled conditions (K and Kp = 1 - 3) were observed in the past 24 h, with one period of active conditions observed locally (K = 4, at 20:00 UT on 21 February). We can still expect some influence of solar wind streams from small patchy negative polarity equatorial coronal holes. Mostly unsettled conditions expected for the next 48 h, with possible active periods.

Today's estimated international sunspot number (ISN): 000, based on 13 stations.

Solar indices for 21 Feb 2020

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	023
AK Wingst	015
Estimated Ap	015
Estimated international sunspot number	000 - Based on 27 stations

Noticeable events summary

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

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