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Here is this week’s space weather and geophysical report, issued 2016 May 16 0334 UTC.

Highlights of Solar and Geomagnetic Activity 09 – 15 May 2016

Solar activity was low and only C-class flare activity was observed. Region 2543 (S05, L=002, class/area=Dao/90 on 10 May) produced a C7 flare at 14/1134 UTC which was the largest event of the period. Region 2544 (N21,L=296, class/area=Dao/150 on 15 May) produced five low-level C-class flares on 15 May, the largest being a C1 at 15/0502 UTC. Region 2542 (N12, L=357, class/area=Dai/150 on 09 May) produced a long-duration C3 flare at 15/1603 UTC with an associated filament eruption and partial-halo coronal mass ejection (CME) that departed off of the west limb. Forecaster analysis and WSA/Enlil modelling determined that the CME did not have an Earth-directed component. There were no Earth-directed CMEs during the period.

No proton events were observed at geosynchronous orbit. However, a slight enhancement was observed on 15 May associated with a long-duration C3 flare and filament eruption near Region 2542. A peak flux of 2 pfu was observed on 15 May at 2315 UTC.

The greater than 2 MeV electron flux at geosynchronous orbit was at very high levels from 09-13 May due to the influences of a negative polarity coronal hole high speed stream (CH HSS). High levels were observed on 14 May and moderate levels rounded out the week on 15 May.

Geomagnetic field activity was at unsettled to G3 (Strong) geomagnetic storm levels on 09 May due to the residual effects of a co-rotating interaction region and subsequent negative polarity coronal hole high speed stream (CH HSS). Mainly quiet to unsettled conditions were observed for 10-14 May with a nominal solar wind. A positive polarity CH HSS became connected with Earths magnetic field on 15 May causing quiet to active conditions.

Forecast of Solar and Geomagnetic Activity 16 May – 11 June 2016

Solar activity is expected to be at very low (B-class flares) to low (C-class flares) levels throughout the outlook period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at high levels on 16-23 May, 30 May-02 Jun, and 06-10 Jun. Moderate flux levels are expected for the remainder of the period.

Geomagnetic field activity is expected to reach G1 (Minor) geomagnetic storm levels on 16, 19-20 May due to the influence of recurrent positive polarity coronal hole high speed streams (CH HSS). G1 (Minor) storm levels are also expected on 29 May and 04-05 June due to the influnce of negative polarity CH HSSs.

Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/

Live Aurora mapping is at http://aurora.sunspotwatch.com/

If you are on Twitter, please follow these two users: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx

Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!

Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g

We’re on Facebook: http://NW7US.us/swhfr

Here is this week’s space weather and geophysical report, issued 2016 May 09 0436 UTC.

Highlights of Solar and Geomagnetic Activity 02 – 08 May 2016

Solar activity was low and only C-class flare activity was observed. Region 2540 (N21, L=068, class/area=Hrx/20 on 01 May) produced a C3 flare at 02/0842 UTC which was the largest event of the period. Region 2535 (N05, L=124, class/area=Hax/60 on 24 Apr) produced a C1 flare at 04/1531 UTC that had an associated Type II radio sweep (est. shock speed 560 km/s) and coronal mass ejection (CME). This CME was first observed in LASCO/C2 coronagraph imagery beginning 04/1412 UTC and likely arrived at Earth early on 08 May (see geomag section below for additional information). A pair of filament eruptions centered near N22E39 and N31E42 were observed in GONG imagery beginning at around 07/1515 UTC. The associated CME was first observed in LASCO/C2 imagery at 07/1648 UTC but analysis indicated that this CME was not Earth-directed.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 03-06 May and moderate levels on 02, 07-08 May.

Geomagnetic field activity was at unsettled to G1 (Minor) geomagnetic storm levels on 02 May with quiet to active levels on 03 May due to the influence of a negative polarity coronal hole high speed stream (CH HSS). Quiet levels were observed on 04 May and quiet to unsettled levels were observed on 05 May under a nominal solar wind regime. The onset of a positive polarity CH HSS caused quiet to G1 (Minor) storm levels on 06 May and quiet to active levels on 07 May. On 08 May G1-G3 (Minor-Strong) geomagnetic storms were observed and analysis suggested that a CME (likely from 04 May as mentioned in solar activity section) was embedded in a CIR preceding a negative polarity CH HSS.

Forecast of Solar and Geomagnetic Activity 09 May – 04 June 2016

Solar activity is expected to be at very low (B-class flares) to low (C-class flares) levels throughout the outlook period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach very high levels on 10-13 May and high levels on 09, 14, and 30 May-02 Jun. Moderate flux levels are expected for the remainder of the period.

Geomagnetic field activity is expected to be reach G3 (Strong) geomagnetic storm levels on 09 May and G1 (Minor) storm levels on 10 May due to the influence of a negative polarity coronal hole high speed stream (CH HSS). G1 (Minor) storm levels are likely on 20 May due to the influence of a positive polarity CH HSS as well as on 29 May and 04 Jun due to the influence of negative polarity CH HSSs.

Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/

Live Aurora mapping is at http://aurora.sunspotwatch.com/

If you are on Twitter, please follow these two users: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx

Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!

Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g

We’re on Facebook: http://NW7US.us/swhfr

Here is this week’s space weather and geophysical report, issued 2016 May 02 0421 UTC.

Highlights of Solar and Geomagnetic Activity 25 April – 01 May 2016

Solar activity was reached low levels this period. A total of seven low-level C-class flares were observed through the week, four of which were from Region 2535 (N05, L=124, class/area=Hax/60 on 24 Apr) and the remaining three were from Region 2539 (N16, L=084, class/area=Eai/100 on 01 May). A pair of coronal mass ejections (CMEs) associated with flare activity from Region 2535 were observed in LASCO C2 coronagraph imagery at 28/0216 UTC and 28/0636 UTC, but did not impact Earth as anticipated.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached moderate levels on 25-30 Apr and was at normal levels on 01 May.

Geomagnetic field activity was quiet on 25, 28-29 Apr, quiet to unsettled on 26-27, 30 Apr, and quiet to active on 01 May.

Forecast of Solar and Geomagnetic Activity 02 May – 28 May 2016

Solar activity is likely to be low with a slight change for M-class flares (R1-R2 (Minor-Moderate) Radio Blackouts) on 03-16 May due to return of old Region 2529 (N09, L=342) which produced an isolated M6 flare (R2-Moderate Radio Blackout) last rotation. Very low to low levels of solar activity are likely through the remainder of the period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is likely to reach high levels on 11-13 May with normal to moderate levels expected for the remainder of the outlook period.

Geomagnetic field activity is expected to reach G1-G2 (Minor-Moderate) geomagnetic storm levels on 02 May due to an enhanced solar wind environment and prolonged southward magnetic field orientation. G1 (Minor) geomagnetic storms are likely on 11 and 20 May with active levels likely on 10, 12, 14, 19 and 21 May due to the influence of recurrent coronal hole high speed streams (CH HSSs). Quiet to unsettled field activity is expected throughout the remainder of the period.

Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/

Live Aurora mapping is at http://aurora.sunspotwatch.com/

If you are on Twitter, please follow these two users: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx

Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!

Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g

We’re on Facebook: http://NW7US.us/swhfr

Here is this week’s space weather and geophysical report, issued 2016 Apr 25 0446 UTC.

Highlights of Solar and Geomagnetic Activity 18 – 24 April 2016

Solar activity was high on 18 Apr due to an M6/1f flare observed at 18/0029 UTC from old Region 2529 (N09, L=342, class/area Eki/850 on 11 Apr). Type II (1869 km/s) and Type IV radio sweeps were observed in conjunction with this event, as well as a 120 sfu Tenflare. Activity dropped to low levels on 19 Apr with a C1/Sf observed at 19/2302 UTC. Very low levels were observed for the remainder of the period after the region departed the disk.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at normal to moderate levels throughout the period.

Geomagnetic field activity was mostly quiet on 18-21 Apr. Quiet to unsettled conditions were observed on 22-24 Apr. Isolated active periods were observed on 22 and 24 Apr along with an isolated minor storm period on 23 Apr due to CH HSS effects.

Forecast of Solar and Geomagnetic Activity 25 April – 21 May 2016

Solar activity is expected to be very low to low for the majority of the period with a chance for M-class flares from 03-16 May due to the return of old Region 2529.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at normal to moderate levels with the exception of 01-03 May and 10-13 May following recurrent CH HSS events.

Geomagnetic field activity is expected to be quiet to unsettled on 25-26 Apr as CH HSS effects subside followed by quiet conditions on 27-28 Apr. Quiet to unsettled conditions are expected on 29 Apr to 01 May with active periods likely due to effects from a recurrent, negative polarity CH HSS. An isolated minor storm period is possible on 30 Apr. Mostly quiet conditions are expected on 02-08 May with unsettled to active periods possible on 04 May due to a SSBC. Quiet to active levels are expected on 09-11 May with minor storm periods likely due to negative polarity CH HSS effects. Mostly quiet conditions are expected from 12-18 May. Isolated unsettled to active periods are possible on 14 May due to another SSBC. Quiet to unsettled conditions are expected from 19-21 May with isolated active periods possible due to effects from a recurrent, positive polarity CH HSS.

Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/

Live Aurora mapping is at http://aurora.sunspotwatch.com/

If you are on Twitter, please follow these two users: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx

Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!

Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g

We’re on Facebook: http://NW7US.us/swhfr

Here is this week’s space weather and geophysical report, issued 2016 Apr 18 0325 UTC.

Highlights of Solar and Geomagnetic Activity 11 – 17 April 2016

Solar activity was at low levels throughout the period. Region 2529 (N09, L=342, class/area Eki/850 on 11 Apr) produced all of the C-class activity, the largest event a C5/Sf at 16/1958 UTC. An associated CME was observed off the west limb but was determined not to be Earth-directed.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at normal levels on 11 and 12 April. High levels were reached from 13-18 April following coronal hole high speed stream (CH HSS) effects.

Geomagnetic field activity was at quiet levels on 11 April. Unsettled to minor storm conditions were observed on 12-14 April due to effects from a negative polarity CH HSS. Active conditions continued into early 15 April but decreased to mostly quiet levels through midday on 16 April. A weak CME moved through late on 16 April increasing activity to unsettled to active levels. Quiet to active conditions continued into 17 April as CME effects subsided and a co-rotating interaction region (CIR) ahead of an approaching positive polarity CH HSS.

Forecast of Solar and Geomagnetic Activity 18 April – 14 May 2016

Solar activity is expected to be low with a slight chance for M-class flares on 18-20 April. As Region 2529 exits the west limb, activity is expected to decrease to very low levels with a chance for C-class activity from 21 April to 02 May. Low levels are expected to return from 03-14 May due to the return of old Region 2529.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at normal to moderate levels with the exception of 26-28 April, 01-03 May and 10-13 April following recurrent CH HSS events.

Geomagnetic field activity is expected to be unsettled to active on 18-19 April followed with quiet to unsettled levels on 20 April due to effects from a positive polarity CH HSS. Mostly quiet conditions are expected on 21-22 April. Unsettled conditions are expected on 23-26 April with isolated active periods likely due to a second recurrent, positive polarity CH HSS. Mostly quiet conditions are expected from 27-28 April. Unsettled to active conditions are anticipated on 29-30 April with minor storm periods likely on 29 April as a negative polarity HSS becomes geoeffective. Mostly quiet conditions are expected from 01-08 May with the exception of possible unsettled to active periods on 04 May due to an SSBC that has affected us the last few rotations. Unsettled to active conditions are expected on 09-11 May with minor storm periods likely as a recurrent negative polarity CH HSS moves into geoeffective position. Mostly quiet conditions are expected on 12-13 May followed by possible unsettled to active conditions on 14 May as a CIR impacts the Earth.

Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/

Live Aurora mapping is at http://aurora.sunspotwatch.com/

If you are on Twitter, please follow these two users: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx

Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!

Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g

We’re on Facebook: http://NW7US.us/swhfr

Take a front-seat view of the Sun in this 30-minute ultra-high definition movie in which NASA SDO gives us a stunning look at our nearest star.

This movie provides a 30-minute window to the Sun as seen by NASA’s Solar Dynamics Observatory (SDO), which measures the irradiance of the Sun that produces the ionosphere. SDO also measures the sources of that radiation and how they evolve.

SDO’s Atmospheric Imaging Assembly (AIA) captures a shot of the sun every 12 seconds in 10 different wavelengths. The images shown here are based on a wavelength of 171 angstroms, which is in the extreme ultraviolet range and shows solar material at around 600,000 Kelvin (about 1 million degrees F.) In this wavelength it is easy to see the sun’s 25-day rotation.

The distance between the SDO spacecraft and the sun varies over time. The image is, however, remarkably consistent and stable despite the fact that SDO orbits Earth at 6,876 mph and the Earth orbits the sun at 67,062 miles per hour.

Scientists study these images to better understand the complex electromagnetic system causing the constant movement on the sun, which can ultimately have an effect closer to Earth, too: Flares and another type of solar explosion called coronal mass ejections can sometimes disrupt technology in space. Moreover, studying our closest star is one way of learning about other stars in the galaxy. NASA’s Goddard Space Flight Center in Greenbelt, Maryland. built, operates, and manages the SDO spacecraft for NASA’s Science Mission Directorate in Washington, D.C.

Charged particles are created in our atmosphere by the intense X-rays produced by a solar flare. The solar wind, a continuous stream of plasma (charged particles), leaves the Sun and fills the solar system with charged particles and magnetic field. There are times when the Sun also releases billions of tons of plasma in what are called coronal mass ejections. When these enormous clouds of material or bright flashes of X-rays hit the Earth they change the upper atmosphere. It is changes like these that make space weather interesting.

Sit back and enjoy this half-hour 4k video of our Star!  Then, share.  🙂

73 dit dit

Here is this week’s space weather and geophysical report, issued 2016 Apr 11 0439 UTC.

Highlights of Solar and Geomagnetic Activity 04 – 10 April 2016

Solar activity was at very low levels on 04-05 April with low levels observed from 06-10 April as Region 2529 (N09, L=341, class/area, Eki/820 on 10 April) began its transit across the solar disk. The region emerged as a large bipolar group that produced 15 low level C-class flares during the period. The largest flare was a long-duration C2 at 09/1342 UTC, however it also produced another long-duration C1 flare at 10/0934 UTC. Other activity included a 10 degree filament eruption, centered near N18E29, that erupted beginning at approximately 10/1000 UTC. An associated CME was observed off the NE limb at 10/1100 UTC. The CME is currently being analyzed, however it is likely that little to no impacts will occur given its location and direction.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at high levels from 04-07 April with normal levels observed from 08-10 April. The highest flux value observed for the period was 3,924 pfu at 05/1605 UTC.

Geomagnetic field activity ranged from quiet to (G1) minor storm levels. Solar wind parameters were at mostly nominal levels through the period until a solar sector boundary crossing (SSBC) occurred around 07/1737 UTC. During this time, total field increased to a maximum of 13 nT while the Bz component deflected southward for approximately 8 hours reaching a maximum of -13 nT. The geomagnetic field responded with G1-minor storm levels late on 07 April through early on 08 April.

Forecast of Solar and Geomagnetic Activity 11 April – 07 May 2016

Solar activity is expected to be at low levels with a slight chance for M-class (R1-R2, Minor-Moderate) flares until Region 2529 rotates off the NW limb on 21 April. Very low levels are expected from 22 April through 03 May. Low levels are expected once again from 04-07 May with the return of Region 2529.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at high levels on 15-18, 24-28, and 30 April – 02 May due to coronal hole high speed stream (CH HSS) influence. Normal to moderate levels are expected for the remainder of the outlook period.

Geomagnetic field activity is expected to be at unsettled to active levels on 12-15, 23-26, and 29-30 April with G1-minor storm levels likely on 13-14 and 29 April due to recurrent CH HSS activity. Unsettled to active levels are also likely on 04 May due to activity associated with an SSBC.

Don’t forget to visit our live space weather and radio propagation web site, at: http://SunSpotWatch.com/

Live Aurora mapping is at http://aurora.sunspotwatch.com/

If you are on Twitter, please follow these two users: + https://Twitter.com/NW7US + https://Twitter.com/hfradiospacewx

Get the space weather and radio propagation self-study course, today. Visit http://nw7us.us/swc for the latest sale and for more information!

Check out the stunning view of our Sun in action, as seen during the last five years with the Solar Dynamics Observatory (SDO): https://www.youtube.com/watch?v=zXN-MdoGM9g

We’re on Facebook: http://NW7US.us/swhfr