Routine Space Environment Product (Daily)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14
FXXX12 KWNP 261231

:Product: Forecast Discussion
:Issued: 2016 Oct 26 1230 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 very low with only a few low-level B-class flares
from Region 2603 (N13W59, Dao/beta).

A CME was observed off of the East limb in LASCO C2 imagery, first
visible at 25/1848 UTC. However, the event was determined to be
associated with farside activity. No Earth directed CMEs were observed
during the reporting period.

Solar activity is expected to remain very low with a slight chance for
C-class flares all three days (26-28 Oct).

Energetic Particle

.24 hr Summary...
The greater than 2 MeV electron flux was a normal to high levels. The
greater than 10 MeV proton flux continued at background values.

The greater than 2 MeV electron flux is expected to be at moderate to
high levels on day one (26 Oct) and increase to high levels on days two
and three (27-28 Oct); with a chance for very high levels by day three
due to CH HSS effects.

Solar Wind

.24 hr Summary...
Solar wind parameters were indicative of a positive polarity,
polar-connected CH HSS. Total field averaged near 5 nT. The Bz component
was variable, with several periods of prolonged southward deflections
near -5 nT. Solar wind speeds were enhanced and averaged between 650-750
km/s. Phi angle was positive.

Solar wind parameters are expected to remain enhanced due to CH HSS
influences over the next three days (26-28 Oct). Solar wind speed is
anticipated to begin a slow decrease by day two, but speeds are likely
to remain above 500 km/s through the forecast period.


.24 hr Summary...
The geomagnetic field reached G3 (Strong) levels during the
25/1200-1500 UTC synoptic period. Active to G2 (Moderate) storm levels
were observed for the remainder of the period.

The geomagnetic field is expected to be at G1-G2 (Minor-Moderate) storm
levels on day one (26 Oct) under the continuing influence of the CH HSS.
Solar wind conditions are expected to weaken slightly on day two through
day three (27-28 Oct), causing mostly unsettled to active conditions
with isolated periods of G1 (Minor) storm levels. is the U.S. government's official web portal to all federal, state and local government web resources and services.