Weekly Propagation Summary – 2015 May 04 16:10 UTC

Weekly Propagation Summary (2015 May 04 16:10 UTC)

Here is this week’s space weather and geophysical report, issued 2015 May 04 0612 UTC.

Highlights of Solar and Geomagnetic Activity
27 April – 03 May 2015

Solar activity was at very low to low levels during the period. Very
low levels were observed on 27 April and on 02 May. Solar activity
was in decline during the beginning of the period as Region 2331
(S10, L=021, class/area Dai/240 on 26 Apr) rotated around the SW
limb on 29 April. Only isolated low level C-class flaring was
observed for the majority of the period until new Region 2335 (S15,
L=192, class/area Dai/220 on 02 May) rotated around the SE limb on
30 April. This region slowly developed in both area and magnetic
class during its first few days on the visible disk and culminated
in seven C-class flares; the largest of which was a C2 flare at
01/0257 UTC. Other activity of note included an 18 degree filament
eruption, centered near S46E09, observed lifting off the visible
disk between 02/1500-1830 UTC. Associated with this eruption was a
partial-halo coronal mass ejection (CME) first observed in
SOHO/LASCO C2 imagery at 02/2036 UTC with an approximate speed of
473 km/s. Although the majority of the ejecta appeared to be
southward of the ecliptic plane, WSA/ENLIL modelling of the event
showed a potential impact after midday on 06 May.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal to moderate levels. Moderate levels were observed on 27-29
April and again on 02-03 May.

Geomagnetic field activity was mostly quiet through late in the
period. At approximately 30/0515 UTC, total field showed an increase
from 6 nT to 11 nT with a weak increase in solar wind speed from
approximately 280 km/s to 350 km/s. Further increases in speed to
around 450 km/s occurred on 01 May as a weak, positive polarity
coronal hole high speed stream (CH HSS) became geoeffective. CH HSS
influence continued through the end of the period. The geomagnetic
field responded with quiet to unsettled conditions on 02-03 May.

Forecast of Solar and Geomagnetic Activity
04 May – 30 May 2015

Solar activity is expected to be at very low to low levels with a
chance for M-class (R1-R2, Minor-Moderate) flare activity from 04-21
May and again from 28-30 May with the return of old Regions 2322
(N11, L=116) and 2325 (N05, L=050).

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 high levels
possible from 07-08, 13-21, and 29-30 May due to CH HSS activity.

Geomagnetic field activity is expected to be at quiet to unsettled
levels from 05-07 May with active periods likely on 06-07 May due to
a combination of CH HSS effects and the arrival of the 02 May CME by
mid to late on 06 May. Unsettled to active conditions with likely
minor storm periods (G1-Minor) are expected from 12-15 and 17-20 May
due to a recurrent CH HSS. A weak CH HSS is expected to become
geoeffective from 27-30 May causing quiet to unsettled conditions.

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

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Weekly Propagation Summary – 2015 Apr 27 16:10 UTC

Weekly Propagation Summary (2015 Apr 27 16:10 UTC)

Here is this week’s space weather and geophysical report, issued 2015 Apr 27 0348 UTC.

Highlights of Solar and Geomagnetic Activity
20 – 26 April 2015

Solar activity was at low to high levels throughout the period.
Region 2322 (N11, L=116, class/area=Dac/60 on 21 April) grew and
intensified as it rotated to the western limb; producing numerous
low level C-class flares and five moderate level M-class flares on
21 April. Region 2322 also produced the largest flare of the period,
an impulsive M4/Sf at 22/1545 UTC. Region 2322 continued to produce
C-class and M-class flares until it rotated beyond the western limb
by 24 April, including a long-duration M1 flare at 23/1007 UTC with
an associated Type-II radio sweep and coronal mass ejection (CME)
from the western limb as observed in SOHO/LASCO C2 imagery. The CME
was not Earth-directed.

Regions 2325 (N05, L=050, class/area=Cai/220 on 19 April) and 2326
(N20, L=086, class/area=Cao/80 on 23 April) were the other most
prolific flare producers during the period. Region 2325 produced an
M1 flare at 21/2201 UTC and Region 2326 produced numerous C-class
X-ray flares with the most notable being a C7 flare at 23/1203 UTC.
Both flares were very impulsive and did not have any observed
optical flares nor notable radio signatures.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
moderate to high levels during the week; reaching high levels on
20-21 April and 24 April with a peak flux of 2,620 pfu on 20 April.

Geomagnetic field activity was at quiet to unsettled levels on 20
April as Earth was in a background ambient solar wind environment.
On 21 April, Earth came under the influence of an isolated positive
coronal hole high speed stream (CH HSS) and solar wind speeds
increased to over 600 km/s as measured at the ACE satellite. This CH
HSS produced occasional periods of active levels of geomagnetic
activity from 21-24 April. The CH HSS rotated out of a geo-effective
alignment by midday on 24 April and the winds decreased to mainly
nominal solar wind conditions of about 375 km/s, returning Earth to
quiet to unsettled geomagnetic conditions.

During the week, ACE solar wind parameters measured a high wind
speed of 628 km/s on 21/0632 UTC and a low wind speed of 291 km/s on
26/1123 UTC. Total field (Bt) ranged from about 1 to 14 nT, while
the Bz component varied between +12 to -7 nT. The phi angle was
generally in a positive (away from the Sun) orientation with a short
period of negative (towards the Sun) sector to begin the week.

Forecast of Solar and Geomagnetic Activity
27 April – 23 May 2015

Solar activity is expected to be at very low to low levels through
03 May due to the low number of complex active regions. Solar
activity levels are expected to increase to low levels; with a
slight chance for moderate (R1-R2/minor-moderate) levels beginning
04 May with the return of Region 2322 (N11, L=116) and remain at low
levels, but increase to a chance for moderate (R1-R2/minor-moderate)
levels beginning 07 May as Region 2326 (N20, L=086) also rotates
back onto the disc. Solar activity level is expected to decrease
back to very low to low levels with the departure of Regions 2322
and 2326 beginning 17 May.

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 from 27 April-06 May,
normal levels from 07-12 May, moderate to high levels from 13-14
May, high levels from 15-18 May, moderate levels from 19-20 May, and
moderate to high levels from 21-23 May.

Geomagnetic field activity is expected to be at quiet levels from
27-28 April and increase to quiet to unsettled levels beginning 29
April due to CH HSS effects. Field activity is expected to begin
decreasing by 02 May, with overall quiet levels likely from 03-10
May. Field activity is expected to increase to unsettled to active
levels beginning late on 11 May and likely reaching active levels on
12-13 May due to CH HSS effects. Field activity is expected to
decrease to unsettled to active levels by 14 May as CH HSS effects
begin to wane; and return to quiet to unsettled conditions from
15-17 May. Field conditions are expected to increase to unsettled to
active levels on 18 May due to a CH HSS and return to quiet to
unsettled conditions as the CH HSS rotates out of a geo-effective
position by 21 May, and remain at quiet levels for the remainder of
the outlook 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!

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

Weekly Propagation Summary – 2015 Apr 20 16:10 UTC

Weekly Propagation Summary (2015 Apr 20 16:10 UTC)

Here is this week’s space weather and geophysical report, issued 2015 Apr 20 0248 UTC.

Highlights of Solar and Geomagnetic Activity
13 – 19 April 2015

Solar activity was at very low to low levels. Numerous weak to
moderate level C-class flares were observed from Regions 2320 (S12,
L=211, class/area Dac/180 on 07 Apr), 2321 (N13, L=095, class/area
Ekc/620 on 13 Apr) and 2324 (N18, L=062, class/area Dko/410 on 15
Apr). The most significant event of the period occurred from Region
2321 on 18 April when the region produced a C5/1f flare at 18/1419
UTC. Associated with this event was a 7 degree long filament
eruption, centered near N05W16. The filament eruption resulted in an
asymmetric, faint full-halo CME, first visible in SOHO/LASCO C2
imagery at 18/1524 UTC.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal levels on 13-15 April and high levels on 16-19 April.

Geomagnetic field activity began the period on 13-14 April at quiet
to active levels under the influence of a weak transient. By midday
on 15 April, field activity increased to active to minor storm
(G1-minor) levels as a co-rotating interaction region (CIR), in
advance of a negative polarity coronal hole high speed stream (CH
HSS), influenced the magnetic field of Earth. Geomagnetic activity
increased to major storm (G2-moderate) levels late on 16 April due
to CH HSS effects and continued at active to minor storm levels
through midday on 17 April. Field activity relaxed to quiet to
unsettled levels through the remainder of the summary period as CH
HSS effects waned.

During the period, ACE solar wind parameters measured a high wind
speed of 784 km/s on 17/0408 UTC with a low speed of 286 km/s on
14/0004 UTC. Total field (Bt) ranged from about 1-17 nT while the Bz
component varied between +13 to -12 nT. The phi angle was generally
in a negative (towards) orientation with intermittent periods of
rotation to a positive (away) sector.

Forecast of Solar and Geomagnetic Activity
20 April – 16 May 2015

Solar activity is expected to be very low to low with a slight
chance for moderate (R1-R2/minor-moderate) levels through 24 April
due to the flare potential from Region 2321. Very low to low levels
are expected from 25 April through 06 May. From 06-16 May, activity
levels are expected to increase to a chance for
(R1-R2/minor-moderate) levels upon the return of old Region 2321
(N11, L=092).

No proton events are expected at geosynchronous orbit, barring any
significant flare activity.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at moderate to high levels from 20 April-06 May,
normal to moderate levels from 07-12 May and moderate to high levels
from 13-16 May.

Geomagnetic field activity is expected to be at G1 (minor)
geomagnetic storm levels on 21 and 22 April due to CME effects.
Field activity is expected to be at G1 (minor) geomagnetic storm
levels on 14 May with unsettled to active conditions expected on 20,
25, 29-30 April and 01, 13 and 15 May, all due to CH HSS effects.
Quiet to unsettled field activity is expected for the remainder of
the outlook 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!

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Watch stunning highlights, last 5 years of the Sun

We rely on the Sun for HF radio communication propagation. For the last five years, we have an amazing front-row seat: the SDO spacecraft. Here is a video with highlights of the last five years of solar activity as seen by NASA and the SDO AIA spacecraft. This is worth seeing on a larger monitor, so try to view it full screen on something larger than your palm. The music is pretty good too. It is worth the 20-some minutes of stunning viewing. Be sure to share!

Enjoy!

 

Details:

This video features stunning clips of the Sun, captured by SDO from each of the five years since SDO’s deployment in 2010. In this movie, watch giant clouds of solar material hurled out into space, the dance of giant loops hovering in the corona, and huge sunspots growing and shrinking on the Sun’s surface.

April 21, 2015 marks the five-year anniversary of the Solar Dynamics Observatory (SDO) First Light press conference, where NASA revealed the first images taken by the spacecraft. Since then, SDO has captured amazingly stunning super-high-definition images in multiple wavelengths, revealing new science, and captivating views.

February 11, 2015 marks five years in space for NASA’s Solar Dynamics Observatory, which provides incredibly detailed images of the whole Sun 24 hours a day. February 11, 2010, was the day on which NASA launched an unprecedented solar observatory into space. The Solar Dynamics Observatory (SDO) flew up on an Atlas V rocket, carrying instruments that scientists hoped would revolutionize observations of the Sun.

Capturing an image more than once per second, SDO has provided an unprecedentedly clear picture of how massive explosions on the Sun grow and erupt. The imagery is also captivating, allowing one to watch the constant ballet of solar material through the sun’s atmosphere, the corona.

The imagery in this “highlight reel” provide us with examples of the kind of data that SDO provides to scientists. By watching the sun in different wavelengths (and therefore different temperatures, each “seen” at a particular wavelength that is invisible to the unaided eye) scientists can watch how material courses through the corona. SDO captures images of the Sun in 10 different wavelengths, each of which helps highlight a different temperature of solar material. Different temperatures can, in turn, show specific structures on the Sun such as solar flares or coronal loops, and help reveal what causes eruptions on the Sun, what heats the Sun’s atmosphere up to 1,000 times hotter than its surface, and why the Sun’s magnetic fields are constantly on the move.

Coronal loops are streams of solar material traveling up and down looping magnetic field lines). Solar flares are bursts of light, energy and X-rays. They can occur by themselves or can be accompanied by what’s called a coronal mass ejection, or CME, in which a giant cloud of solar material erupts off the Sun, achieves escape velocity and heads off into space.

This movie shows examples of x-ray flares, coronal mass ejections, prominence eruptions when masses of solar material leap off the Sun, much like CMEs. The movie also shows sunspot groups on the solar surface. One of these sunspot groups, a magnetically strong and complex region appearing in mid-January 2014, was one of the largest in nine years as well as a torrent of intense solar flares. In this case, the Sun produced only flares and no CMEs, which, while not unheard of, is somewhat unusual for flares of that size. Scientists are looking at that data now to see if they can determine what circumstances might have led to flares eruptions alone.

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 as well as on Earth (disrupting shortwave communication, stressing power grids, and more). Additionally, studying our closest star is one way of learning about other stars in the galaxy.

Goddard built, operates and manages the SDO spacecraft for NASA’s Science Mission Directorate in Washington, D.C. SDO is the first mission of NASA’s Living with a Star Program. The program’s goal is to develop the scientific understanding necessary to address those aspects of the sun-Earth system that directly affect our lives and society.

Please visit my channel on YouTube, and subscribe ( https://YouTube.com/NW7US ).

— Twitter: https://Twitter.com/NW7US
— Facebook: https://www.facebook.com/spacewx.hfradio
— Web: http://SunSpotWatch.com
( Data feed Twitter https://Twitter.com/hfradiospacewx )

Credits:

Music Via YouTube “Free-for-use” Creation Tools

Video clips of the Sun are from NASA’s Goddard Space Flight Center/SDO which are in the Public Domain

By the way, this is an example of what I am trying to produce on a more regular basis, once I launch the space weather YouTube channel that I have started. If you wish to help, here is the GoFundMe link: http://www.gofundme.com/sswchnl

 

Weekly Propagation Summary – 2015 Apr 13 16:10 UTC

Weekly Propagation Summary (2015 Apr 13 16:10 UTC)

Here is this week’s space weather and geophysical report, issued 2015 Apr 13 0314 UTC.

Highlights of Solar and Geomagnetic Activity
06 – 12 April 2015

Solar activity was at low to moderate levels throughout the period.
Region 2320 (S12, L=211, class/area=Dac/180 on 07 Apr) produced an
M1/1b flare at 1443 UTC on 08 April and Region 2321 (N13, L=094,
class/area=Ekc/610 on 12 Apr) produced a long-duration M1/Sf flare
at 0950 UTC on 12 April, which were the largest events of the
period. In addition to the R1 (Minor) radio blackouts, Regions 2320
and 2321 produced numerous low to mid-level C-class flares
throughout the week and were the most productive active regions of
the period. A coronal mass ejection (CME) associated with the M1/Sf
flare from Region 2321 was first observed in SOHO/LASCO C2
coronagraph imagery at 0948 UTC on 12 April, but was directed well
east of the Sun-Earth line.

Region 2320 produced a C3/1f flare at 1906 UTC on 06 April, with
associated Type-II and Type-IV radio emissions, which resulted in a
CME that was visible in coronagraph imagery beginning at 1936 UTC on
06 April. This CME impacted Earth early on 10 April, causing periods
of moderate geomagnetic storms. See "Geomag" portion below
for further information.

Toward the end of the period, Region 2320 produced a C6/Sf flare at
2329 UTC on 12 April with associated Type-II radio emissions. A
subsequent coronal mass ejection (CME) was first visible in
SOHO/LASCO C2 coronagraph imagery at 12/2348 UTC but analysis is
ongoing to determine if this event has an Earth-directed component.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached
moderate levels on 06-09 April and at normal levels for the
remainder of the period.

Geomagnetic field activity was at quiet to unsettled levels for
06-09 April under a nominal solar wind regime. The 06 April CME
impacted Earth just after 0000 UTC on 10 April, enhancing the
geomagnetic field. As the 06 April CME passed the Earth, 10 April
began with periods of G1 (Minor) geomagnetic storm conditions
between 0000-0300 UTC and 0600-0900 UTC and an isolated period of G2
(Moderate) geomagnetic storm period between 10/0300-0600 UTC. Active
conditions were observed between 10/0900-1500 UTC with quiet to
unsettled levels observed over the remainder of 10 April. Active
conditions were observed once again for the first half of 11 April
as residual CME effects continued to subside but the latter half of
11 April was quiet to unsettled. Quiet conditions were observed on
12 April.

Forecast of Solar and Geomagnetic Activity
13 April – 09 May 2015

Solar activity is likely to be at moderate (R1-R2/Minor-Moderate)
levels throughout the period, with the exception of 25-26 April, due
to the flare potential of Regions 2320 (S12, L=211) and 2321 (N13,
L=094).

No proton events are expected at geosynchronous orbit, barring any
significant flare activity.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to reach high levels on 21-24 April and 04-09 May, moderate
levels on 17-20, 25-28 April, and 01-03 May, and normal levels for
the remainder of the period.

Geomagnetic field activity is expected to be at G1 (Minor)
geomagnetic storm levels on 17 and 30 April with active conditions
expected for 16, 25, 29 April and 01 May, all due to coronal hole
high speed stream effects. Quiet to unsettled field activity
expected for 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!

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

Weekly Propagation Summary – 2015 Apr 06 16:10 UTC

Weekly Propagation Summary (2015 Apr 06 16:10 UTC)

Here is this week’s space weather and geophysical report, issued 2015 Apr 06 0133 UTC.

Highlights of Solar and Geomagnetic Activity
30 March – 05 April 2015

Solar activity was at low levels throughout the period. Region 2303
(N19, L=066, class/area=Hkx/400 on 17 Mar) produced low to mid-level
C-class activity early in the period while Regions 2318 (N10, L=199,
class/area=Dao/199 on 05 Apr) and 2320 (S12, L=212,
class/area=Dai/140 on 05 Apr) each produced only low-level C-class
flare activity throughout the remainder of the period.

A filament eruption centered near S29E28 was observed in SDO/AIA 193
imagery between 04/2225-2330 UTC. A long-duration C3/1f hyderflare
was measured during this event and had an associated Type-II radio
emission. The subsequent fast-moving coronal mass ejection (CME) was
first observed in SOHO/LASCO C2 coronagraph imagery beginning at
04/2336 UTC. WSA-ENLIL model output suggests a glancing blow arrival
of this CME late on 07 April.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal levels on 30 Mar and normal to moderate levels on 31 Mar-05
Apr.

Geomagnetic field activity was at quiet to unsettled levels on 02-04
Apr with an isolated period of active conditions observed between
2100-2359 UTC on 02 Apr due to the effects of a positive polarity
coronal hole high speed stream. Quiet to unsettled levels were
observed on 30 Mar-01 Apr, and 05 Apr under a mostly nominal solar
wind environment.

Forecast of Solar and Geomagnetic Activity
06 April – 02 May 2015

Solar activity is expected to be low (below NOAA Scale event
thresholds) with a slight chance for M-class (R1-Minor) flare
activity 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 high levels on 22-24 Apr and 02 May, moderate
levels on 06-08, 11-14, 17, 20-21 Apr, and 27 Apr-01 May, and at
normal levels for the remainder of the period.

Geomagnetic field activity is expected to be at G1 (Minor)
geomagnetic storm levels on 15-16, 18-19, and 25-27 Apr due to
coronal hole high speed stream effects. Active conditions are
expected on 07-09 Apr due to the anticipated arrival of the 04/05
Apr CME. Active conditions are expected on 17, 20 Apr, and 28 Apr-01
May due to coronal hole high speed stream effects with generally
quiet to unsettled levels likely for 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!

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

Today’s Space Weather Forecast Discussion (2015 Mar 31 1230 UTC)

Today's Space Weather Forecast Discussion - 2015 Mar 31 20:07 UTC

Here is the current forecast discussion on space weather and geophysical activity, issued 2015 Mar 31 1230 UTC.

Solar Activity

24 hr Summary: Solar activity was at low levels with C-flare activity from both Regions 2303 (N18, L=065) and 2305 (S10W58, Dho/beta). The largest flare of the period was a C4 at 30/2205 from Region 2303 just beyond the NW limb. Slight decay was observed in the leading spots of Region 2315 (S20W36, Dro/beta) and the trailing spots in Region 2305. No Earth-directed coronal mass ejections were observed.

Forecast: Solar activity is likely to be at low levels with a slight chance for an isolated M-class (R1-R2, Minor-Moderate) flare for day one (31 Mar). An increased chance for M-class activity is expected by days two and three (01-02 Apr) as old Regions 2302 (N12, L=189) and 2297 (S17, L=196) are expected to return.

Energetic Particle

24 hr Summary: The greater than 2 MeV electron flux at geosynchronous orbit was at normal levels. The greater than 10 MeV proton flux at geosynchronous orbit remained at background levels.

Forecast: The greater than 2 MeV electron flux at geosynchronous orbit is forecast to be at normal to moderate levels all three days (31 Mar -02 Apr) The greater than 10 MeV proton flux at geosynchronous orbit is expected to be at or near background conditions (Below S1-Minor) for the forecast period.

Solar Wind

24 hr Summary: Solar wind speed at the ACE spacecraft for the majority of the period was in the mid-300 km/s range but increased to near 400 km/s after 0730 UTC. Phi was negative. Bz was at or above -4 nT and Bt was less than 7 nT through 0730 UTC when it increased to near 16 nT. The increase in activity is likely due to the onset of a coronal hole high speed stream (CH HSS).

Forecast: Continued enhancement of solar wind parameters is anticipated on day one (31 Mar) and remain enhanced through day three (02 Apr) as the CH HSS becomes geoeffective.

Geospace

24 hr Summary: The geomagnetic field was at quiet levels.

Forecast: Unsettled to active conditions are expected to dominate through day three (02 Apr) due to CH HSS effects. trans-equatorial high speed stream becomes geoeffective.

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!

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


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