Prohlížíte si archiv pátek 28. února 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2014 Feb 28 1204 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Proton event in progress (>10 MeV)

	10cm flux	Ap
28 Feb 2014	176	022
01 Mar 2014	168	012
02 Mar 2014	165	007

Bulletin

The solar disk remains covered with a large number of sunspot groups, many of them undergoing magnetic reconfigurations and producing non-stop C-class flares. The most noteworthy regions are AR1987-Cat49 (beta-gamma), AR1990-Cat52 (beta-delta), AR1991-Cat59 (Feb 28 M1.1 flare), AR1982-Cat 46 (beta-gamma). As a consequence we expect M-class flaring activity but an isolated X-class flare also remains possible. AR1982-Cat 46 will rotate behind the solar West limb in the coming 48 hours, a sharp drop in the F10.7 radio flux can thus be expected. We expect continued episodes of K=4 activity during the next 24 hours as a consequence of a fast solar wind stream from a recurrent coronal hole. ACE low energy proton fluxes also suggest that a new shock might arrive in the coming 12 hours.

Today's estimated international sunspot number (ISN): 145, based on 06 stations.

Solar indices for 27 Feb 2014

Wolf number Catania	///
10cm solar flux	176
AK Chambon La Forêt	///
AK Wingst	021
Estimated Ap	020
Estimated international sunspot number	159 - Based on 15 stations

Noticeable events summary

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

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