Vaata reede, 3 aprill 2015 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2015 Apr 03 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 03 Apr 2015 until 05 Apr 2015
Päikesepursked ehk loited

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

Geomagnetism

Minor storm expected (A>=30 or K=5)

Päikese prootonid

Quiet

10cm fluxAp
03 Apr 2015121021
04 Apr 2015123021
05 Apr 2015128012

Bulletin

The strongest flare of the past 24 hours was the C1.7 flare peaking at 07:26 UT today in the Catania sunspot group 21 (no NOAA number yet) that has just crossed the east limb. More C-class flares are expected in this group, with a small chance for an M-class flare. The solar wind speed is currently around 550 km/s, probably indicating the imminent arrival of a fast stream from the trans-equatorial coronal hole. The interplanetary magnetic field (IMF) is currently around 7 nT. Yesterday evening, in the interaction region between the fast stream and the preceding slow flow, the IMF Bz component stayed negative (down to -10 nT) for around 3 hours, so active geomagnetic conditions (K = 4) were reported by IZMIRAN and NOAA. (Intervals of K = 5 reported this morning by Dourbes are most probably spurious.) We expect active to minor storm conditions in the coming hours as the Earth will be going through the fast solar wind stream.

Today's estimated international sunspot number (ISN): 021, based on 10 stations.

Solar indices for 02 Apr 2015

Wolf number Catania///
10cm solar flux121
AK Chambon La Forêt029
AK Wingst015
Estimated Ap017
Estimated international sunspot number025 - Based on 20 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

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

Kõik ajad UTC-s

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