Space Weather Forecast Discussion
Forecast Discussion
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Issued: 2019 Jul 18 1230 UTC

Solar Activity
.24 hr Summary...
Solar activity remained very low. No Earth-directed CMEs were observed in available coronagraph imagery.
Solar activity is expected to remain very low 18-20 Jul.

Energetic Particle
.24 hr Summary...
The greater than 2 MeV electron flux reached high levels. The greater than 10 MeV proton flux remained at background values.
The greater than 2 MeV electron flux is expected to continue at moderate to high levels 18-19 Jul before decreasing to normal to moderate levels on 20 Jul as

Solar Wind
.24 hr Summary...
Solar wind parameters reflected a return to near background conditions. Solar wind speeds decreased from ~450 km/s to near 395 km/s, total field strength averaged near 4 nT, and the Bz component averaged around +/- 3 nT. The phi angle was positive until 17/1800 UTC when it shifted into a negative position, then rotated back to positive after 18/0842 UTC.
The solar wind environment is anticipated to remain at mostly background levels on 18-20 Jul, with a chance for isolated minor enhancements, due weak influences from CH HSS proximity.

.24 hr Summary...
The geomagnetic field was quiet.
The geomagnetic field is expected to remain mostly quiet, with a chance for occasional unsettled conditions, on 18-20 Jul in response to isolated enhancements in the solar wind.
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