Routine Space Environment Product Issued Weekly
Issued by NWS
FXXX02 KWNP 170455
:Product: 27-day Space Weather Forecast
:Issued: 2013 Jun 17 0404 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# 27-day Space Weather Forecast
Forecast of Solar and Geomagnetic Activity
17 June - 13 July 2013
Solar activity is expected to be at predominantly very low to low
levels. There is a chance for M-class (R1-Minor) flares from 18 June
through 08 July due to potential flare activity from old Region 1762
(S30, L=129) and two new regions observed in STEREO A/B EUVI 195
imagery located to the northwest of old Region 1765 (N08, L=052) and
southwest of old Region 1757 (S08, L=148).
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at high levels from 22 June through 07 July due to
coronal hole high speed stream (CH HSS) activity. Normal to moderate
levels are expected for 17-21 June and 08-13 July.
Geomagnetic field activity is expected to be quiet to unsettled on
17-18 June due to weak CH HSS activity. Mostly quiet conditions are
expected on 19-20 June. A recurrent CH HSS is expected to become
geoeffective from 21-24 June causing unsettled to active levels with
a chance for minor storm (G1-Minor) conditions. Mostly quiet levels
are expected from 25-27 June. From 28 June through 01 July, another
CH HSS is expected to be geoeffective causing unsettled to minor
storm (G1-Minor) levels. Quiet levels are expected to return from
02-04 July. On 05-06 July, a weaker CH HSS is expected to cause
quiet to unsettled levels. From 07 July until the end of the
forecast period, mostly quiet conditions are expected.