Viewing archive of Tuesday, 7 May 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 May 07 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
07 May 2019	077	009
08 May 2019	078	016
09 May 2019	078	007

Bulletin

NOAA AR 2740 (Catania group 16) continued to produce several flares. The largest was a C7.3 flare peaking at 13:54UT. The region continues to exhibit mixed polarity flux and is expected to remain active. Another region (NOAA AR 2741) rotated on disk from the East. Further activity is likely at a level of C-class flares.

Coronagraph images show that the CME onset(s) related to yesterdays flaring activity from region 2740 was directed sufficiently North and East of the Earth to exclude any possible Earth directed component. No other Earth directed CME's were recorded.

Solar proton flux levels were at background values and are expected to remain so.

Solar wind conditions were nominal with solar wind speed under 400 km/s and total magnetic field under 5 nT. The North-South orientation of the magnetic field was variable and the phi angle was mostly in the negative sector. Solar wind conditions are expected to become slightly enhanced by midnight under the influence of a small equatorial coronal hole.

Geomagnetic conditions were quiet to unsettled (NOAA Kp 1-2, local K Dourbes 0-3). Geomagnetic conditions are expected to become unsettled with a possibility of an isolated active period.

Today's estimated international sunspot number (ISN): 027, based on 22 stations.

Solar indices for 06 May 2019

Wolf number Catania	026
10cm solar flux	076
AK Chambon La Forêt	011
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	015 - Based on 27 stations

Noticeable events summary

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

All times in UTC

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