Routine Space Environment Product Issued Weekly
Issued by NWS

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FXXX06 KWNP 200356

:Product: 7-day Space Weather Highlights
:Issued: 2017 Mar 20 0323 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
#                7-day Space Weather Highlights
Highlights of Solar and Geomagnetic Activity
13 - 19 March 2017

Solar activity was at very low levels with no observable spots on
the solar disk. No Earth-directed CMEs were observed during the

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal to moderate levels with high levels observed on 13-15 March.
The largest flux value of the period was 8,800 pfu observed at
14/1655 UTC.

Geomagnetic field activity ranged from quiet to unsettled levels.
Solar wind speed was at nominal levels between 300 km/s and 400 km/s
through most of the period with total field near 5 nT. On 15-16
March, a slight increase in solar wind speed and total field was
observed just after a solar sector boundary crossing at 15/0008 UTC.
This was likely due to a weak connection to a positive polarity
coronal hole high speed stream (CH HSS). Total field increased to 9
nT while solar wind speed increased to near 433 km/s. The
geomagnetic field responded with isolated unsettled periods on 15
and 16 March. is the U.S. government's official web portal to all federal, state and local government web resources and services.