Routine Space Environment Product Issued Weekly
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2
000
FXXX06 KWNP 130526
WEKHIL

:Product: 7-day Space Weather Highlights
:Issued: 2014 Oct 13 0503 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
#                7-day Space Weather Highlights
#
Highlights of Solar and Geomagnetic Activity
06 - 12 October 2014

Solar activity was at low levels for 06-08, 10-12 Oct but reached
moderate levels on 09 Oct. Low level solar activity early in the
period increased to moderate levels as Region 2182 (S14, L=123,
class/area=Dac/170 on 09 Oct) produced two M-class flares in rapid
succession early on 09 Oct, followed by a third M-class flare a few
hours later. The first two moderate level flares from Region 2182
were a pair of M1 flares at 0143 UTC and 0158 UTC on 09 Oct, with
the first flare having an associated optical component measured at
1f. The third flare from Region 2182 was an M1/1n flare at 0659 UTC
on 09 Oct. Region 2182 produced numerous C-class flares before
rotating around the western limb on 12 Oct. A coronal mass ejection
(CME) associated with the first two M-class flares was observed
leaving the west limb in SOHO/LASCO C2 coronagraph imagery beginning
at 09/0336 UTC. A second CME associated with the third M-class flare
was observed leaving the west limb in C2 imagery beginning at
09/1348 UTC. Subsequent analysis determined that these CMEs were
directed well west of the Sun-Earth line. Solar activity returned to
low levels on 10 Oct and persisted through the remainder of the
period. Region 2187 (S09, L=321, class/area=Cso/120 on 12 Oct)
rotated onto the visible disk on 11 Oct and produced low-level
C-class flare activity late in the period, the largest of which was
a C3 flare at 10/1647 UTC while the region was on the eastern limb.

A Hyder flare was observed in conjunction with a filament eruption
(estimated at 10-15 degrees). The filament was centered near S13W51
and was observed erupting in SDO/AIA 304 imagery between 1538-1809
UTC on 10 Oct. A subsequent CME was observed off the southwest limb
in C2 coronagraph imagery beginning at 10/1612 UTC. WSA-ENLIL model
output and forecaster analysis indicate that this CME was
predominately south and west of the Sun-Earth line but a possible
weak glancing blow late 13 Oct/early 14 Oct has not been completely
ruled out. An additional filament liftoff (estimated at 8 degrees)
centered near N10W15 was observed in SDO/AIA 304 imagery beginning
at 11/1854 UTC, but appeared to be reabsorbed. Late in the period,
an eruption behind the west limb was observed in SDO/AIA 304 imagery
beginning at 12/2340 UTC. Due to missing STEREO satellite imagery,
it is unclear whether this eruption is associated with a filament
liftoff or flare activity from the vicinity of old Region 2182. A
subsequent CME was observed off the west limb in C2 coronagraph
imagery beginning at 13/0000 UTC but is not expected to be
Earth-directed.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
low to moderate levels on 06-09 Oct and decreased to low levels for
10-12 Oct.

Geomagnetic field activity was at quiet to unsettled levels on
06-08, 10-11 Oct with quiet conditions prevailing on 12 Oct under a
nominal solar wind regime. Quiet to unsettled levels with active
conditions between 0300-0900 UTC were observed on 09 Oct due to a
solar sector boundary crossing (SSBC) followed by an extended period
of southward Bz.


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.