AR11748 Releases Yet Another X Flare – X1.2

X1.2 Flare from AR11748 with the SDO/AIA 131 and 171. The flare peaked in X-ray at 1:48 UT on May 15, 2013 credit: NASA/SDO/jhelioviewer

X1.2 Flare from AR11748 with the SDO/AIA 131 and 171. The flare peaked in X-ray at 1:48 UT on May 15, 2013 credit: NASA/SDO/jhelioviewer

The active region that could, has again given us an X flare! That makes 4!

12:15 UT – The NASA GSFC Space Weather Research Center has estimated that the CME may give a glancing blow to Epoxi (~5/18/2013 06:00 UT) and hit Spitzer (~5/17/2013 00:30 UT plus minus 7 hours). There is also a small chance that the flank of the CME may hit the Earth around 5/19/2013. However, no major geomagnetic activity is expected.

NASA Space Weather Research Center ENLIL CME Model for the May 15, 2013 event associated with the X1.2 solar flare.

NASA Space Weather Research Center ENLIL CME Model for the May 15, 2013 event associated with the X1.2 solar flare.

3:19 UT – SOHO/LASCO C2 has captured the associated CME in it’s camera. Looks pretty fast.

CME associated with the X1.2 flare captured by the SOHO/LASCO C2 camera.

CME associated with the X1.2 flare captured by the SOHO/LASCO C2 camera.

2:52 UT – Here is a video of the eruption. There is an expansion of loops and a lift-off of material indicating that there is probably a fast CME.

2:01 UT (10:01 pm EDT) May 15, 2013 – AR11748 has released an X1.2 solar flare, which peaked in the GOES X-ray monitor at 1:48 UT on May 15, 2013 or 9:48 EDT on May 14, 2013.

X1.2 Flare Intensity in the GOES X-ray Monitor

X1.2 Flare Intensity in the GOES X-ray Monitor. The flare peak is at 01:48 UT, May 15, 2013 or 9:48 UT May 14, 2013.

 

X1.2 Flare in SDO/AIA 304 at 01:44 UT, May 15, 2013

X1.2 Flare in SDO/AIA 304 at 01:44 UT, May 15, 2013. credit: NASA/SDO/jhelioviewer

X1.2 Flare from AR11748 with the SDO/AIA 131 and 171. The flare peaked in X-ray at 1:48 UT on May 15, 2013 credit: NASA/SDO/jhelioviewer

X1.2 Flare from AR11748 with the SDO/AIA 131 and 171. The flare peaked in X-ray at 1:48 UT on May 15, 2013 credit: NASA/SDO/jhelioviewer

AR11748’s other X flares

credit: NASA/SDO, helioviewer.org, NOAA/SWPC

2 Comments

  1. Roald says:

    Ok in layman terms what does a X flare mean to me?

  2. Linda Khandro says:

    Hi Alex!
    I’m delighted to find the site and the blog, thanks so much! I have a question about the labeling of sunspot magnetic polarity, and I hope you can help:

    In your description of the May 13-16 “Wiggly Jiggly Loops, etc” you say that the white patches are (+) magnetic field regions and the black patches are (-) regions. But I have an image from 2008 (3/27) where the reverse is the case…the whites are labeled (-) and the blacks are labeled (+).

    Would you be so kind as to explain the rational or protocol for labeling the patches? Does it have to do with which hemisphere they occur? The 3/27/2008 image seems to be of the south hemisphere, yet the current ones look as though they might be south hemisphere as well!

    Thanks so much,
    Linda

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