Viewing archive of Sunday, 9 July 2017

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2017 Jul 09 1230 UTC

SIDC Forecast

Solar flares

M-class flares expected (probability >=50%)

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
09 Jul 2017	087	023
10 Jul 2017	089	007
11 Jul 2017	091	007

Bulletin

NOAA AR 2665 (the only visible AR on the disk) produced an M1.3 flare, with peak at 03:18 UT. This region continues to grow, more M-class flares can be expected (and less likely X-flares).

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours.

The expected high speed stream from an equatorial coronal hole arrived with a shock at 23:27 UT on July 8. The speed reached 520 km/s with the southward component of the interplanetary magnetic fields reaching - 10 nT, with elevated density, causing active conditions locally (K = 4, at 03:00 UT and 07:00 UT) and minor storm conditions at planetary levels (Kp = 5, between 00:00 UT and 03:00 UT). Disturbed geomagnetic conditions can be expected for the next 24 h.

Today's estimated international sunspot number (ISN): 045, based on 24 stations.

Solar indices for 08 Jul 2017

Wolf number Catania	///
10cm solar flux	087
AK Chambon La Forêt	019
AK Wingst	004
Estimated Ap	005
Estimated international sunspot number	032 - Based on 33 stations

Noticeable events summary

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

All times in UTC

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