weather.gov     
National Weather Service

Routine Space Environment Product Issued Weekly
NWS Homepage
This page is being discontinued on March 12, 2014.
The same data is available at this site. Please update your bookmarks.
Thank you, and we apologize for the inconvenience.
Please send an email to SR-SRH.Webmaster@noaa.gov with any concerns.


Current Version
Previous Version:    
[Printable]
230
FXXX06 KWNP 201026
WEKHIL

:Product: 7-day Space Weather Highlights
:Issued: 2014 Oct 20 1002 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
13 - 19 October 2014

Solar activity ranged from very low to high during the period.
Region 2192 (S13, L=251, class/area=Fkc/1560 on 19 Oct) produced the
vast majority of the flare activity throughout the week. These
events included several low and mid level C-class flares, a M1
(R1-minor) flare at 14/1837 UTC, a long duration M2 (R1-Minor) flare
14/2121 UTC, a M4 (R1-Minor) flare 16/1303 UTC, a M1/Sf (R1-Minor)
flare at 18/0758 UTC, and finally, a long duration X1/Sn flare at
19/0503 UTC.

The M1 (R1-minor) flare at 14/1837 UTC had an associated Tenflare
(1300 sfu), while the long duration M2 (R1-Minor) flare 14/2121 UTC
had an associated Tenflare of 180 sfu. However, due to Region
2192's proximity the east limb, none of the associated coronal
mass ejections (CMEs) appeared to have an Earthward component and
none were expected to have significant impacts at Earth. Neither the
impulsive M4 (R1-Minor) flare 16/1303 UTC nor the long duration
M1/Sf (R1-Minor) flare at 18/0758 UTC had reportable radio
signatures associated with them. Nearly simultaneous with the M1
flare, an 8 degree long filament was observed in SDO/AIA 304 imagery
erupting along along a channel, centered near N15W10, between
18/0740-0938 UTC. LASCO C2 imagery observed a narrow CME lifting off
the NW limb, first visible at 18/0912 UTC. Subsequent WSA-Enlil
model output suggested the CME was well off the Sun-Earth line was
is not expected to impact Earth.

SDO/AIA imagery of the long duration X1/Sn flare at 19/0503 UTC
event suggested that the bulk of the ejecta was reabsorbed or
directed well south and east of the Sun-Earth line. SOHO/LASCO
coronagraph imagery confirmed what was observed from the SDO/AIA
spacecraft as no obvious CME was detected associated with the
X-flare. The remaining regions on the visible disk were generally
stable and unremarkable.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached
moderate levels on 14, 18, and 19 Oct.

Geomagnetic field activity was at predominantly quiet to unsettled
levels under a nominal solar wind regime. Isolated periods of active
geomagnetic field activity were observed on 18 Oct (0000-0300 UTC)
as a result of solar sector variability. Minor storm levels were
observed on 14 Oct (1800-2100 UTC and 2100-2400 UTC) and 15 Oct
(0000-0300 UTC) as the result of the glancing blow passage of the
CME observed leaving the sun on 10 Oct, combined with coronal hole
high speed stream (CH HSS) influence.




U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE