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Here is the current forecast discussion on space weather and geophysical activity, issued 2015 Jun 07 1230 UTC.
Solar Activity
24 hr Summary: Solar activity remained at low levels. Newly-numbered Region 2365 (S13E54, Cso/beta) produced a C2 flare at 06/2234 UTC, the largest event of the period. Region 2362 (N05E33, Dao/beta) produced a C1 flare at 07/1036 UTC. Region 2365 showed little change while Region 2362 indicated intermediate spot decay.
Region 2360 (N15E02, Eac/beta-gamma) showed spot and penumbra growth within its intermediate and trailer area and exhibited mixed magnetic polarities within its leader spots. New Region 2366 (N17E45, Cro/beta) developed on the disk during the period. The remaining spotted regions were quiet and stable. No Earth-directed CMEs were detected in available coronagraph imagery.
Forecast: Solar activity is expected to be low with a slight chance for M-class flares over the next 3 days (07-09 Jun), primarily due to the flare potential from Regions 2360, 2361 and 2362.
Energetic Particle
24 hr Summary: The greater than 2 MeV electron flux was at normal levels and the greater than 10 MeV proton flux remained at background levels this period.
Forecast: The greater than 2 MeV electron flux is expected to be at normal levels for the forecast period (07-09 Jun). The greater than 10 MeV proton flux is expected to remain at background levels throughout the forecast period.
Solar Wind
24 hr Summary: Solar wind parameters at the ACE satellite remained at nominal levels. Solar wind speed was steady at about 330 km/s. Total magnetic field strength ranged between 3-6 nT through about 07/0145 UTC when a dip to 1-2 nT occurred followed by a steady increase to 10 nT at 07/0543 UTC through periods end. The Bz component was variable between -3 nT to +5 nT through about 07/0145 UTC. Afterwards, Bz dipped steady southward to -6 nT through 07/0543 UTC when it turned steady northward to near +10 nT. The phi angle remained in a predominantly positive orientation (away from the Sun) through about 07/0145 UTC when a solar sector boundary change (SSBC) to a negative (towards the Sun) orientation occurred. The SSBC was anticipated preceding a negative polarity coronal hole high speed stream (CH HSS).
Forecast: Solar wind parameters are expected to continue with variations in the magnetic field with additional SSBC periods through the remainder of day one (07 Jun). Recurrence suggests by days 2-3 (08-09 Jun) the co-rotating interactive region (CIR), ahead of the CH HSS, will likely increase solar wind speed and enhance magnetic field strength.
Geospace
24 hr Summary: The geomagnetic field was at quiet levels.
Forecast: The geomagnetic field is expected to be at quiet to unsettled levels for the remainder of day one (07 Jun). By day two (08 Jun), the geomagnetic field is likely to be at quiet to active levels as Earth rotates into a negative solar sector as its impacted by the CIR ahead of the CH HSS. Day 3 (09 Jun) is likely to see unsettled to minor storm conditions (G1-Minor) early in the period as Earth connects with the negative polarity CH HSS.
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![Today's Space Weather Forecast Discussion - 2015 Jun 07 20:07 UTC]()
Live data: SunSpotWatch.com
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