Viewing archive of Monday, 25 February 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Feb 25 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
25 Feb 2019	071	001
26 Feb 2019	070	012
27 Feb 2019	071	010

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. No Active Regions (AR) or filament channels are present on the solar disk. The greater-than 10 MeV proton flux was at nominal values. A negative polarity equatorial coronal hole (CH) has reached W30S15.

Solar activity is expected to remain at low levels.

The solar wind speed has fluctuated between 310 and 340 km/s (DSCOVR) over the past 24 hours. The total magnetic field strength has fluctuated around 5 nT (DSCOVR). The Bz component fluctuated around 0 nT, ranging between -4 and +4 nT. Geomagnetic conditions ranged between Kp index 0-1 (NOAA) and local K index 0-3 (Dourbes) over the past 24 hours. A positive polar coronal hole is currently positioned near W30S15 in the Western hemisphere of the Sun and the associated co-rotating interaction region and high-speed stream (HSS) may enhance solar wind speeds over the next couple of days and as a consequence increase geomagnetic activity levels to active conditions.

Geomagnetic conditions are expected to be quiet to unsettled.

Today's estimated international sunspot number (ISN): 000, based on 30 stations.

Solar indices for 24 Feb 2019

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	003
AK Wingst	001
Estimated Ap	001
Estimated international sunspot number	000 - Based on 32 stations

Noticeable events summary

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

All times in UTC

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