Het archief bekijken van donderdag 20 januari 2022

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2022 Jan 20 1231 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Proton event in progress (>10 MeV)

	10cm flux	Ap
20 Jan 2022	105	007
21 Jan 2022	102	011
22 Jan 2022	098	007

Bulletin

There are 4 visible active regions on the solar disk. NOAA AR 2929 produced an M5.5 flare peaking at 06:01 UT (and several C-class flares). This region is about to rotate over the west limb, but it can still produce C and M-class flares (and proton events at Earth).

The flare described above was related to a CME with an angular width of about 100 degrees, directed to the northwest with speeds around 1000 km/s. Since the source region was close to the limb, an Earth directed component is not likely (but a shock arrival cannot be discarded on 22-23 January).

As a consequence of the CME and M5.5 flare, the greater than 10 MeV proton flux exceeded the 10 pfu threshold, it is now close to 20 pfu. The greater than 2 MeV electron flux has been slightly above the 1000 pfu alert threshold and is expected to remain close to the threshold during the next 24 hours. The 24h electron fluence was at moderate levels and is expected to remain so in the next 24 hours.

The solar wind speed at Earth decreased to about 470 km/s, and the interplanetary magnetic field around 5 nT. Slow solar wind conditions are expected for the next 24 hours.

Geomagnetic conditions were quiet to unsettled both at local and planetary levels (K_Bel 1 - 3, Kp 1 - 3). Similar conditions are expected for the next 24 hours, with possible active conditions if the CME from 18 January arrives to the Earth (expected late on 21 January).

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 057, gebaseerd op 19 stations.

Zon indexen voor 19 Jan 2022

Wolfgetal Catania	058
10cm zonneflux	105
AK Chambon La Forêt	019
AK Wingst	023
Geschatte Ap	024
Geschat internationaal zonnevlekkengetal	058 - Gebaseerd op 18 stations

Overzicht opvallende gebeurtenissen

Aangeboden door het Solar Influences Data Analysis Center© - SIDC - Verwerkt door SpaceWeatherLive

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