Viewing archive of Thursday, 12 November 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Nov 12 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
12 Nov 2015	105	009
13 Nov 2015	106	010
14 Nov 2015	107	011

Bulletin

Over the past 24 hours solar activity has been low, there have been no C-class or M-class flares recorded. NOAA Active Region (AR) 2452 (Axx/alpha) rotated into view and was numbered, it appears quite stable. All other regions have remained stable with little flux emergence. There were no Earth directed Coronal Mass Ejections (CMEs) observed in the past 24 hours. The solar wind speed has steadily declined over the past 24 hours, from 650 km /s to around 500 km /s. The total magnetic field has fluctuated between 2 and 5 nT and the Bz component has oscillated between -4 nT and +4 nT. Geomagnetic conditions ranged between quiet and active over the past 24 hours (NOAA Kp 1-5, local K Dourbes 0-4). Geo-activity reached storm levels (Kp 5) around 18:00 UT yesterday (2015-Nov-11), which was possibly caused by the trailing edge of the High Speed Stream (HSS) or a glancing blow from the CME generated on 2015-Nov-09.

Today's estimated international sunspot number (ISN): 063, based on 15 stations.

Solar indices for 11 Nov 2015

Wolf number Catania	098
10cm solar flux	105
AK Chambon La Forêt	031
AK Wingst	024
Estimated Ap	027
Estimated international sunspot number	064 - Based on 18 stations

Noticeable events summary

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

All times in UTC

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