Vaata laupäev, 21 jaanuar 2017 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2017 Jan 21 1321 UTC

SIDC Forecast

Valid from 1230 UTC, 21 Jan 2017 until 23 Jan 2017
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

10cm fluxAp
21 Jan 2017084010
22 Jan 2017083007
23 Jan 2017081007

Bulletin

The increase of the solar activity in the last 24 hours was mainly due to flaring from the Catania sunspot group 81 (NOAA AR 2628) which produced 9 B-class and 5 C-class flares. The Catania sunspot group 80 (NOAA AR 2627) also produced several B-class flares. The strongest reported flare was compact and confined C9.3 flare originating from the Catania sunspot group 81 (NOAA AR 2628), which peaked at 07:14 UT on January 21. In the coming hours we can expect B-class and C-class flares, in particular from the Catania sunspot group 81 (NOAA AR 2628). No Earth directed CMEs were observed during last 24 hours.

The solar wind speed amounts 480 km/s, and the interplanetary magnetic field magnitude is about 5nT. Presently, the geomagnetic conditions are quiet to unsettled and we expect them to remain so in the coming hours.

Today's estimated international sunspot number (ISN): 074, based on 23 stations.

Solar indices for 20 Jan 2017

Wolf number Catania073
10cm solar flux083
AK Chambon La Forêt019
AK Wingst013
Estimated Ap012
Estimated international sunspot number055 - Based on 28 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

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

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