Viewing archive of Wednesday, 4 September 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Sep 04 1230 UTC

SIDC Forecast

Solar flares

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
04 Sep 2019	069	007
05 Sep 2019	068	007
06 Sep 2019	067	007

Bulletin

Solar activity has been very low, no flares in the past 24 h. NOAA AR 12748 no longer has any visible spots. Solar activity is expected to remain very low.

No Earth directed CMEs in past 24 h. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 470 km/s with interplanetary magnetic field magnitude of 6 nT. Geomagnetic conditions ranged between 1 and 3 (both for Kp and K Dourbes). A negative polarity coronal hole in the southern hemisphere crossed central meridian on September 3. Its associated fast solar wind is expected to arrive to the Earth around September 7. Mostly quiet geomagnetic conditions expected until then.

Today's estimated international sunspot number (ISN): 000, based on 24 stations.

Solar indices for 03 Sep 2019

Wolf number Catania	013
10cm solar flux	069
AK Chambon La Forêt	015
AK Wingst	008
Estimated Ap	010
Estimated international sunspot number	007 - Based on 26 stations

Noticeable events summary

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

All times in UTC

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