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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Feb 23 1244 UTC

SIDC Forecast

Valid from 1230 UTC, 23 Feb 2015 until 25 Feb 2015
Brillamenti solari

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

Geomagnetism

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

Protoni solari

Quiet

10cm fluxAp
23 Feb 2015118017
24 Feb 2015118011
25 Feb 2015118007

Bulletin

Solar activity has been low, only minor C-class flares in past 24 h. The strongest flare was a C1.1 event from NOAA AR 2288 with peak at 00:26 UT. All active regions on the solar disk have very simple magnetic configuration so the situation is not expected to change in the coming hours. The Earth is under the influence of a coronal hole related solar wind, with relatively low speeds (about 400 km/s). Conditions are unsettled and expected to remain so, with possible isolated active periods.

Today's estimated international sunspot number (ISN): 034, based on 12 stations.

Solar indices for 22 Feb 2015

Wolf number Catania///
10cm solar flux118
AK Chambon La Forêt013
AK Wingst008
Estimated Ap007
Estimated international sunspot number031 - Based on 12 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 X2026/02/04X4.21
Ultimo brillamento M2026/02/25M2.4
Ultima tempesta geomagnetica2026/03/03Kp5 (G1)
Giorni senza macchie
Ultimi 365 giorni3 giorni
20263 giorni (5%)
Ultimo giorno senza macchie2026/02/24
Media mensile Numero di Macchie Solari
febbraio 202678.2 -34.3
marzo 202675 -3.2
Ultimi 30 giorni57.2 -67.7

Questo giorno nella storia*

Brillamenti solari
12012X7.79
22012X1.97
32015X1.33
42011M5.29
52011M2.71
DstG
11994-109G3
21981-90G1
32012-88G2
42016-84G1
51972-72G2
*dal 1994

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