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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2016 Sep 24 1251 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

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

Sluneční protony

Quiet

	10cm flux	Ap
24 Sep 2016	087	006
25 Sep 2016	088	012
26 Sep 2016	089	019

Bulletin

Solar activity was very low. The Sun produced no C flares in the past 24 hours. Low solar activity (C flaring) is possible in the next 24 hours. Solar wind speed measured by DSCOVR gradually decreased slightly from about 400 to about 370 km/s. Meanwhile the magnitude of the Interplanetary Magnetic Field varied beween about 3 and 8 nT. Quiet geomagnetic conditions (K Dourbes between 0 and 2, NOAA Kp between 0 and 1) were registered in the past 24 hours. Quiet to unsettled levels (K Dourbes < 4) are expected on September 24 and 25. Quiet to active levels (K Dourbes < 5) are expected on September 26 due to the expected arrival of a positive high speed stream associated with a negative coronal hole, with a chance for minor storm episodes (K Dourbes = 5).

Today's estimated international sunspot number (ISN): 055, based on 21 stations.

Solar indices for 23 Sep 2016

Wolf number Catania	///
10cm solar flux	086
AK Chambon La Forêt	005
AK Wingst	003
Estimated Ap	002
Estimated international sunspot number	058 - Based on 26 stations

Noticeable events summary

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

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