Viewing archive of Wednesday, 23 November 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Nov 23 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
23 Nov 2016	077	028
24 Nov 2016	080	027
25 Nov 2016	082	017

Bulletin

Solar activity has been very quiet, no C-class flares in past 24 h. An active region rotating into view over the east limb will likely change the situation. C-class flares can be expected.

Proton levels are low and there were no Earth directed CMEs in past 24 h.

Solar wind speed is at 450 km/s with interplanetary magnetic field intensity of 5 nT. Geomagnetic conditions have reached active levels overnight (both locally and at planetary levels). This is because of the moderately fast winds (reaching 530 km/s) from a coronal hole. The shape of the coronal holes present on the disk is highly irregular, so fast speed streams are expected to appear intermittently in the next 48 h. Geomagnetic conditions up to up to minor storm levels (with possible isolated major storm periods) can be expected.

Today's estimated international sunspot number (ISN): 011, based on 09 stations.

Solar indices for 22 Nov 2016

Wolf number Catania	000
10cm solar flux	077
AK Chambon La Forêt	030
AK Wingst	015
Estimated Ap	013
Estimated international sunspot number	000 - Based on 18 stations

Noticeable events summary

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

All times in UTC

<< Go to daily overview page