Viewing archive of Thursday, 1 September 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Sep 01 1406 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
01 Sep 2016	096	031
02 Sep 2016	095	024
03 Sep 2016	094	024

Bulletin

Over the past 24 hours solar activity has been low. The largest flare was a C2.2 class flare. Active Region (AR) 2585 (Macintosh class:Csi; Mag. type:Beta) has just emerged over the East solar limb and has been most active, producing the C2.2 class flare, which peaked at 20:19 UT yesterday. All other ARs have shown low levels of activity. Previously active AR 2583 has now moved over the West solar limb. Solar protons have remained at background levels over the past 24 hours. No Earth directed CMEs were detected. Solar activity is expected to remain low over the next 24 hours with a high chance of C-class flares and a low probability of M-class flares. The solar wind speed has fluctuated between 380 to 480 km/s over the past 24 hours. The total magnetic field strength has slowly increased from around 7 nT to 10 nT. The Bz component has oscillated between positive and negative, fluctuating between -10 and +8 nT, but has been mainly negative this morning. Geomagnetic conditions ranged between Kp index 1-5 (NOAA) and local K index 1-4 (Dourbes) over the past 24 hours. A large positive polarity Northern polar coronal hole extending toward low latitudes has just passed into the Western hemisphere. The resulting High Speed Stream (HSS) has enhanced solar wind speeds at and Earth and combined with the largely negative magnetic field has enhanced geomagnetic activity. Increased geomagnetic activity is expected to persist for a couple of days.

Today's estimated international sunspot number (ISN): 079, based on 24 stations.

Solar indices for 31 Aug 2016

Wolf number Catania	///
10cm solar flux	098
AK Chambon La Forêt	020
AK Wingst	006
Estimated Ap	007
Estimated international sunspot number	/// - Based on /// stations

Noticeable events summary

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

All times in UTC

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