Vaata reede, 28 veebruar 2014 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2014 Feb 28 1204 UTC

SIDC Forecast

Valid from 1230 UTC, 28 Feb 2014 until 02 Mar 2014
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Proton event in progress (>10 MeV)

10cm fluxAp
28 Feb 2014176022
01 Mar 2014168012
02 Mar 2014165007

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 flux176
AK Chambon La Forêt///
AK Wingst021
Estimated Ap020
Estimated international sunspot number159 - Based on 15 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
28004400480050S24E53M1.1SN59/1991

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

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