Prohlížíte si archiv čtvrtek 2. srpna 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2018 Aug 02 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 02 Aug 2018 until 04 Aug 2018
Sluneční erupce

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

10cm fluxAp
02 Aug 2018070007
03 Aug 2018071008
04 Aug 2018072007

Bulletin

Solar activity was at very low levels. The small active region NOAA 2717 (McIntosh: Axx; Hale: alpha) is currently (06UT) located near S06E25, and seems to be dacaying. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.

Solar activity is expected to remain at very low levels.

Solar wind remained somewhat disturbed and enhanced. Wind speed varied between 450 km/s (around 13:30UT) and 350 km/s (around 02:45UT), ending the period with values near 370 km/s (DSCOVR). Bz varied mostly between -8 and +6 nT throughout the period, being predominately positive. The interplanetary magnetic field was mostly directed away from the Sun, until about 04UT when it became mostly negative (towards the Sun). Quiet to unsettled geomagnetic conditions were observed.

Geomagnetic activity is expected to continue at quiet to unsettled levels until 4 or 5 August when a weak wind stream associated with a small negative polarity equatorial coronal hole (CH) may start influencing the earth environment. An isolated active episode is then possible.

Today's estimated international sunspot number (ISN): 011, based on 23 stations.

Solar indices for 01 Aug 2018

Wolf number Catania///
10cm solar flux070
AK Chambon La Forêt015
AK Wingst010
Estimated Ap008
Estimated international sunspot number012 - Based on 30 stations

Noticeable events summary

DayBeginMaxKonecLocStrengthOP10cmCatania/NOAARadio burst types
Žádný

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

Všechny časy v UTC

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