Viewing archive of Friday, 22 March 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Mar 22 1231 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Minor storm expected (A>=30 or K=5)

Solar protons

Quiet

	10cm flux	Ap
22 Mar 2019	080	001
23 Mar 2019	081	019
24 Mar 2019	082	007

Bulletin

There are two active regions on the visible solar disc. NOAA AR 2735 is decaying and has now alpha magnetic field configuration. NOAA AR 2736 has evolved into beta-gamma-delta and has produced seven C-class flares in the past 24 h, the largest wass a C4.8 one peaking at 05:14 UT. More C-class flares are expected and M-class flares remain possible.

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

The solar wind speed is at 320 km/s with interplanetary magnetic fields of 4 nT. Quiet conditions were observed in the past hours and the situation is not expected to change until the CME from March 20 arrives to the Earth (expected on March 23 around noon), K up to 5 can be expected (with possible periods of K = 6).

Today's estimated international sunspot number (ISN): 031, based on 19 stations.

Solar indices for 21 Mar 2019

Wolf number Catania	///
10cm solar flux	080
AK Chambon La Forêt	003
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	041 - Based on 23 stations

Noticeable events summary

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

All times in UTC

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