Routine Space Environment Product (Daily)
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FXXX12 KWNP 290030

:Product: Forecast Discussion
:Issued: 2015 May 29 0030 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
#             Forecast Discussion
Solar Activity

.24 hr Summary...
Solar activity was at very low levels.  Newly numbered Region 2356
(S15E61, Hax/alpha) rotated onto the SE limb and was relatively stable
and quiet during the period.  No Earth-directed coronal mass ejections
were observed.

Solar activity is expected to be at very low levels with an increasing
chance for C-class activity over the next three days (29-31 May) due to
the return of old region 2339 (N13, L=129) on or about 30 May.

Energetic Particle

.24 hr Summary...
The greater than 2 MeV electron flux was at normal levels while the
greater than 10 MeV proton flux remained at background levels this

The greater than 2 MeV electron flux is expected to be at predominately
normal levels for day one (29 May), with moderate levels likely on days
two and three (30-31 May) due to elevated solar winds from a high speed
solar wind stream (CH HSS).  The greater than 10 MeV proton flux is
expected to remain at background levels throughout the forecast period.

Solar Wind

.24 hr Summary...
Solar wind parameters continued at nominal levels today with solar wind
speeds mostly steady between 320 km/s and 360 km/s.  Total field ranged
from 2 nT to 9 nT while the Bz component was variable between +/-7 nT.
Phi angle was oriented in a positive (away) sector for the majority of
the period beginning after 28/0415 UTC.

Solar wind parameters are expected to become enhanced on day one and two
(29-30 May) as a positive polarity CH HSS moves into geoeffective
position.  By day three (31 May) a return to nominal solar wind
conditions is expected.


.24 hr Summary...
The geomagnetic field was quiet.

The geomagnetic field is expected to be at quiet to active levels (Below
G1-Minor) on day one (29 May) and quiet to unsettled levels on day two
(30 May) due to CH HSS effects.  A return to mostly quiet levels is
expected by day three (31 May). is the U.S. government's official web portal to all federal, state and local government web resources and services.