Space Weather

September 2, 2014

A Dazzling Eruption Captured by STEREO Behind

SDO and SOHO were not the only spacecraft to capture the spectacular eruption off the East (left) limb of the sun on August 24, 2014. The M5.9 flare (at 12:17 UT) from AR 12151 was seen by the STEREO SECCHI
July 8, 2014

Another M-flare from AR12113

01:22 UT – AR12113 produced an M1.2 flare that peaked in GOES X-ray at 00:26 UT Type II radio emission was detected at 00:29 UT. This emission is associated with a solar eruption and typically indicate a coronal mass ejection
June 12, 2014

A CME Impact at Earth – Maybe?

NOAA active region AR12087 began making its activity apparent in SDO well before it became visible on the Earth facing solar disk. Solar flares from the region became visible in the first week of June. On June 10, the region
June 7, 2014

CME from Filament Eruption Brushes Earth

The CME is here! As predicted the CME from the June 4 filament eruption impacted Earth’s magnetosphere around 16:30 UT with a glancing blow and created a minor geomagnetic disturbance. The plot above shows the solar wind measured by the ACE spacecraft,
February 20, 2014

Starting the Day with a Flare, Protons and a Geomagnetic Storm

Geomagnetic storms continue while an eruption on the west limb of the sun brings a flare, protons and possibly another CME our way. Solar Eruption The sun erupted with an M3 X-ray flare (NOAA Scale R1-Minor radio blackout) peaked in
February 19, 2014

Geomagnetic Storm and Aurora from Valentine’s Weekend CME

A CME from February 16, 2014 has impacted Earth. The CME’s magnetic structure was such that it stirred things up in the magnetosphere.   A significant interplanetary shock detected by ACE at L1 at 3:10 UT, February 19, 2014.   The
February 14, 2014

Waiting for an Aurora Valentine

3 CMEs are headed for Earth with the first impact expected late on Feb. 14, 2014 for some Valentine’s day and weekend aurora! Space weather forecasters are waiting to see what is in store for this weekend. Three separate CMEs
February 1, 2014

AR11967 Continues its Flaring and AR11968 Sends a CME Our Way

 There are two main active regions (ARs 11967/11968) on the sun and both are giving a moderate show. AR11967 continues to produce C- and M-level events, including an M3.0 flare at 07:14 UT Feb. 1, 2014. The region continues to show signs
January 31, 2014

Possible Glancing Blow from M6.6 Associated CME

CME may impact Earth on Feb. 2, 2014 according to NASA SWRC research models. At 16:11 UT Jan. 30, 2014, an M6.6 flare from AR11967 peaked in the GOES X-ray monitor. This was about 15 minutes after the completion of an
November 19, 2013

Solar Eruption from AR11893 (Updated)

11 UT (11/19/2013) – Sunspot group AR11893 erupted producing a X1 solar flare peaking at 10:26 UT, Nov. 19, 2013. A 10 cm radio burst associated with the solar flare was observed at 10:20 UT. This radio noise is generally
September 30, 2013

Spectacular Erupting Filament with Earth-directed Space Weather

A huge filament erupted from the sun producing a beautiful coronal mass ejection (CME) and solar energetic particle event. Around 21 UT, 9/29/2013 a filament erupted from the northwest quadrant of the sun. It started from the surface with a
August 22, 2013

Slow Earth-directed Halo CME

This time a CME is headed directly for us! Around 5:24 UT (1:24 EDT), the SOHO/LASCO C2 instrument caught a first glimpse at a CME leaving the sun directly for Earth. The CME is traveling at a fairly slow ~610
August 20, 2013

Aurora Ahead? – Filament Eruption with an Earth-directed CME

There may be a geomagnetic storm in store for Earth. Lookout aurora watchers! A filament ~50 Earths in length (~400,000 miles) erupted from the Sun’s southern hemisphere in the southwest direction around 7:24 UT (4:24 am EDT). The eruption produced
August 17, 2013

M3.3 Solar Flare and a Coronal Mass Ejection

A long duration M3.3 flare with a beautiful eruption and CME! Active region AR11818 produced a flare peaking in X-ray at 18:24 UT (2:24 pm EDT). The eruption produced extended X-ray emission with another flare, ~M1.5 after the initial eruption
May 27, 2013

Filament Eruption Sends CME Headed Towards STEREO Ahead and Mars

A filament erupted on the backside of the sun and was observed by the EUVI instrument on the STEREO Ahead spacecraft. The eruption produced a CME detected by STEREO-A COR2, STEREO-B COR2 and SOHO LASCO C3 around 19:24 UT, May
April 12, 2013

A Decent Threefer Solar Eruption – Flare, CME and Particle Storm

M6.5 solar flare, Earth-bound CME and a particle storm! AR11719 produced the largest flare of the year, an M6.5, peaking in GOES X-ray at 7:16 UT on April 11. First, we have a snapshot of the flare from the SDO/AIA
March 16, 2013

Waiting for a St. Patrick’s Day Aurora

Look at for Aurora tonight and tomorrow at high latitudes! Yesterday’s coronal mass ejection (CME) is expected to sweep past Earth in the last half of today (March 16, 2013) sometime around 18UT (+- 7-8 hours). Forecasts are from minor
April 23, 2012
At 17:40 UT, the Sun produced a C2 solar flare with a radio burst and a SCORE-C CME. NASA Goddard Space Weather Center predicts it will reach Earth 4/27/2012 at 5:49 UT with only minor impact.

A Little Flare & Some Geomagnetic Activity – April 23, 2012

At 17:40 UT, the Sun produced a C2 solar flare with a radio burst and a SCORE-C CME.  NASA Goddard Space Weather Center predicts it will reach Earth 4/27/2012 at 5:49 UT with only minor impact. Currently, there is a
March 11, 2012

More Geomagnetic Storms Predicted for March 11, 2012

    CMEs are on their way to us! Estimated impact is March 11, 2012 around 2-3 PM EDT. High latitude aurora watchers keep lookout the night of March 11, 2012. On March 10, 2012, the sun produced 1 C-class
March 9, 2012

Geomagnetic Storm Picks Up! And AR11429 Flares Again!

      Nature never ceases to surprise and amaze. Just when it looked like the geomagnetic storm from yesterdays CME impacts had fizzled out, Earth’s magnetosphere continues its upset state. Even before the Kp index (a measure of the
March 7, 2012

Double Blast – Exciting Space Weather from AR11429

Sunspot group, AR11429 (Active Region), is at it again. When it first began its journey across the Earthward side of the Sun it released an M-class flare, an X-class flare and several more M flares, along with several CMEs. Early
November 3, 2011

Space Weather This Week: 10/27/2011 – 11/02/2011

Solar Activity Solar activity was at low to moderate levels, with occurrences of several C-class flares and three M class flares (see the list below). Quite a few slow to moderate CMEs were detected emanating from different regions of the
October 26, 2011

Anatomy of a Geomagnetic Storm – What made that great Aurora?

  Saturday, October 22, 2011, started like most any other day, lots of activity of varying size and shape was occurring on the Sun. Most people looking at the Sun that day remember the spectacular lightbulb shaped CME that occurred