Here is the current forecast discussion on space weather and...

Here is the current forecast discussion on space weather and geophysical activity, issued 2017 Aug 01 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was low due to a C1 flare at 01/0747 UTC and several B-class flares from an area of enhanced brightening on the ESE limb. This area most likely signals the return of old Region 2665 (S06, L=113). No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is likely to be at low levels with a slight chance for M-class (R1-R2, Minor-Moderate) flares for the forecast period (01-03 Aug) due to the return of old Region 2665 (S06, L=113).

Energetic Particle

24 hr Summary: The greater than 2 MeV electron flux was at high levels. The greater than 10 MeV proton flux was at background levels.

Forecast: The greater than 2 MeV electron flux is expected to be at moderate to high levels on days one through three (01-03 Aug). The greater than 10 MeV proton flux is expected to persist at background levels throughout the forecast period.

Solar Wind

24 hr Summary: Solar wind parameters reflected a nominal solar wind environment until late in the period when influences of a possible CIR ahead of a negative polarity CH HSS were observed. Solar wind speed began the period near 350 km/s, bottomed out near 300 km/s, then increased toward the end of the period to speeds near 400 km/s. Total field was between 3 and 5 nT early, then increased to 10 nT after 01/0700 UTC. The Bz component varied between +/-5 nT. Phi angle was oriented in a positive solar sector until 01/0700 UTC when a switch to a negative orientation was observed.

Forecast: The near-Earth solar wind environment is expected to be mostly nominal on day one (01 Jul). Solar wind is forecast to become enhanced briefly on day two (02 Jul) due to the influence of a negative polarity CH HSS. Conditions are expected to return to mostly nominal by day three (03 Aug).

Geospace

24 hr Summary: The geomagnetic field was quiet under a nominal solar wind regime.

Forecast: Mostly quiet levels are expected on day one (01 Aug). Day two (02 Aug) is forecast to see quiet to unsettled levels, as a negative polarity CH HSS is expected to briefly influence the geomagnetic field. Mostly quiet levels are expected by day three (03 Aug) as CH HSS effects begin to wane.

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