Vaata teisipäev, 29 september 2015 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2015 Sep 29 1231 UTC

SIDC Forecast

Valid from 1230 UTC, 29 Sep 2015 until 01 Oct 2015
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Warning condition (activity levels expected to increase, but no numeric forecast given)

10cm fluxAp
29 Sep 2015120010
30 Sep 2015115006
01 Oct 2015105007

Bulletin

Six active regions were identified on the solar disk today. Once more NOAA active regions (AR) 2422 and 2423 were the main players, producing nine M-class flares and several C-class flares. The largest one was a M7.6 flare, peaking at 14:58 UT. The flares were either impulsive or the accompanying CME was too weak and without an Earth-directed component to be of any influence for the Earth. NOAA 2422 has stretched in the E-W direction but has stopped growing in sunspot area. The region still is a beta-gamma-delta region. The evolution of NOAA 2423 is difficult to follow, but it still produced some flares. Additional M-class flares are expected, with 30% probability for an X-class flares. Due to the position of NOAA AR 2423, we retain the warning level for a potential proton event.

The Earth is still inside a slow (values between 340 and 380 km/s) solar wind flow and the interplanetary magnetic field magnitude remains around 5 nT. The geomagnetic conditions are quiet (K<3) to unsettled (K=3) and are expected to remain so.

Today's estimated international sunspot number (ISN): 111, based on 14 stations.

Solar indices for 28 Sep 2015

Wolf number Catania///
10cm solar flux124
AK Chambon La Forêt013
AK Wingst004
Estimated Ap003
Estimated international sunspot number146 - Based on 26 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
28130113181329S22W24M1.11N39/2422
28145314581503----M7.610039/2422
29031103160331S08W78M1.2SF36/2423
29034103430353S20W36M1.1SF39/2422
29050505160523S21W37M2.9SF39/2422
29053305370539S09W82M1.2SF36/2423
29055305560604----M1.039/2422
29063906430646S20W34M1.41N39/2422
29084608510855S10W77M1.31N36/2423
29110911151120S10W79M1.6SF39/2422

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

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