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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2014 Apr 05 1157 UTC

SIDC Forecast

Valid from 1230 UTC, 05 Apr 2014 until 07 Apr 2014
Brillamenti solari

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Protoni solari

Quiet

10cm fluxAp
05 Apr 2014160019
06 Apr 2014163008
07 Apr 2014165007

Bulletin

Solar activity has been low to moderate in the past 24 hours. NOAA AR 2027 produced a C8.3 flare on April 4th, peaking at 13:48 UT. It was associated with a type II radio burst, an ejecta/filament seen in 304A data, an EUV coronal wave observed at 193A and a partial halo CME in LASCO C2. EUV and coronagraphic observations suggest that the bulk of the CME is going essentially northward, but the shock driven by the CME might arrive at Earth around April 8th, mid-day. We expect active conditions in the next 48 hours, with M flares possible in the vicinity of ARs 2027 and 2030 as well as in AR 2026. Geomagnetic conditions were very quiet in the last 24 hours. The latest ACE observations show a weak shock signature on April 5th, around 09:30 UT possibly associated with the CMEs of April 1st and April 2nd. There is currently a weak jump in Btot and speed, and a weak drop in temperature and density. We expect unsettled to active conditions in the coming hours, with a return to quiet conditions on April 6.

Today's estimated international sunspot number (ISN): 107, based on 10 stations.

Solar indices for 04 Apr 2014

Wolf number Catania///
10cm solar flux157
AK Chambon La Forêt009
AK Wingst006
Estimated Ap006
Estimated international sunspot number118 - Based on 13 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
Nessuna

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

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Notizie sul meteo spaziale

Ultimo brillamento X2025/03/28X1.1
Ultimo brillamento M2025/04/01M2.5
Ultima tempesta geomagnetica2025/03/27Kp5 (G1)
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