Viewing archive of Sunday, 4 September 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Sep 04 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
04 Sep 2016	099	024
05 Sep 2016	100	021
06 Sep 2016	101	017

Bulletin

Solar activity has been very low, no C-class flares. Active region NOAA AR 2585 with beta-gamma magnetic field configuration is capable of producing C-class (and less likely of M-class) flares. No Earth directed CMEs were detected.

The Earth is still under the influence of a high speed stream from a polar coronal hole. As a consequence, in the past 24 h minor storm conditions were reached at Dourbes and at planetary levels (K and Kp = 5). Currently Solar wind speed is at 680 km/s with magnetic field intensity of 6 nT, with Bz oscillating between 5 and -5 nT. Apart from the large northern polar coronal hole (currently affecting the Earth), an equatorial one will likely affect the Earth in the coming 24 h. Increased geomagnetic activity is expected to persist for the next 48 h.

Today's estimated international sunspot number (ISN): 050, based on 20 stations.

Solar indices for 03 Sep 2016

Wolf number Catania	///
10cm solar flux	099
AK Chambon La Forêt	043
AK Wingst	038
Estimated Ap	038
Estimated international sunspot number	066 - Based on 29 stations

Noticeable events summary

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

All times in UTC

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