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

Here is the current forecast discussion on space weather and geophysical activity, issued 2017 Jul 21 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was very low. No numbered regions are currently on the visible disk. No Earth-directed CMEs were observed in available coronagraph imagery.

Forecast: Solar activity is expected to be very low on days one through three (21-23 Jul).

Energetic Particle

24 hr Summary: The greater than 2 MeV reached high levels this period with a peak level of 11,443 pfu. The greater than 10 MeV proton flux was at or near background levels this period.

Forecast: The greater than 2 MeV electron flux is expected to reach high levels over the next three days (21-23 Jul). The greater than 10 MeV proton flux is forecast to be at or near background levels for days one through three (21-23 Jul).

Solar Wind

24 hr Summary: Solar wind parameters were mostly at nominal levels, before indicating a CIR ahead of an anticipated +CH HSS. Solar wind speeds averaged near 380 km/s until around 20/1700 UTC before increasing to near 630 km/s. Total field strength was between 4 and 10 nT. Bz was variable, with maximum southward deviations to near -8 nT. The phi angle was positive.

Forecast: Solar wind parameters are expected to show an increase in solar wind activity for days one through three (21-23 Jul), with increases in solar wind velocity, temperature, and magnetic field, as the recurrent +CH HSS is forecast to become geoeffective.

Geospace

24 hr Summary: The geomagnetic field reached active levels due to CH HSS effects.

Forecast: The geomagnetic field is forecast to be quiet to active conditions for day one (21 Jul), followed by unsettled to active conditions on day two (22 Jul) as CH HSS effects continue. A return to quiet to unsettled conditions is forecast for day three (23 Jul) as CH effects are forecast to begin waning.

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