- Oct 22, 2014
- 23,903
Our sun has been busy evolving. NOAA is warning of a severe Geomagnetic Storm watch for 20 Jan 2026.
This will disrupt GPS navigation satellites.
This will disrupt GPS navigation satellites.
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Sailing is all about the Weather.
Big into the exploration of Atlantic Hurricanes since Katrina came uninvited into his world, James (Jim) Gurley (JamesG161) has followed every Tropical Storm birthed in Atlantic, Gulf and Caribbean waters since. Being a boater, he knows that we often need more time to prepare than we get from the TV weather folk. Jim relies on the science of storm development to share early warning info with friends and fellow boaters.
Early in 2018, Jim and John Shepard, (JSSailem) started to chat about the weather data available. John asked Jim to help forecast Pacific NW storms, and this morphed into discussions on weather forecasting.For John, sailing in the PNW is sometimes hit and miss. One day is ugly, then a string of beautiful days but no wind, followed by a series of blue-sky days and 12 knot breezes. Being ready for those great sailing days means you need to look to the Pacific Ocean and what is brewing. John has been into Pacific NW Weather since the 1970’s when his first PNW November storm hit bringing more than 40 days and 40 nights of continual rain.
Together we want to share information, new APPs, safety, and thoughts about letting the weather help you. Identify some of the resources for sailors and help prepare you for your next sailboat outing.It is far better to go out on the water knowing what to expect in weather terms, than to be out on the water and see dark ominous clouds suddenly appear, unprepared.
SPACE WEATHER ALERT - GPS Navigation risk
- Thread starter jssailem
- Start date
- Oct 22, 2014
- 23,903
One of the other events connected with this storm is the possibiity:
Auroras may become visible over much of the northern half of the country, and maybe as far south as Alabama to northern California.
Interesting that NOAA’s experimental aurora forecast tool doesn’t align though. It still seems to just show auroras well north.
- Oct 22, 2014
- 23,903
This showed up in one of my messages.
The Aurora NOAA link is identified as "Experimental".
Not sure exactly what is driving the site. How often the site updates is unclear. This solar storm just popped up in the last couple of days. (I think it was 16 Jan). The plasma discharge was 18-19. The magnetic storm is forecasted for the 20th. We have a clear sky forecast. I am going to bundle up, go out, and cross my fingers.
The Aurora NOAA link is identified as "Experimental".
Not sure exactly what is driving the site. How often the site updates is unclear. This solar storm just popped up in the last couple of days. (I think it was 16 Jan). The plasma discharge was 18-19. The magnetic storm is forecasted for the 20th. We have a clear sky forecast. I am going to bundle up, go out, and cross my fingers.
I have been trying, in Northern New Hampshire, to watch for aurora for the last couple of years. There seems, in New England, to be a correlation between severe space weather and overcast skies. However, I find that NOAA has been more conservative, and more accurate, within a couple of hours, than the hyperbolic headlines that popup on my Google front page, which are usually 14 hours late, anyhow.
But, down here in Querétaro Mexico, I don't expect much.
-Will
But, down here in Querétaro Mexico, I don't expect much.
-Will
- Oct 22, 2014
- 23,903
Well the northern lights are still not visible below the 45th parallel. While the Big Dipper was prominent in the clear sky, the lights were absent.
- Oct 22, 2014
- 23,903
We were just above the fog still shortly after midnight, here in the extreme NW corner of the lower 48 (apologies to Point Roberts which is actually NWer). The lights were just barely persceptible with the naked eye. Overexposed, you could see them OK-ish but we have some town still north of us, so a fair bit of light pollution. So, overexposed shots like this just kind of look like sunsets. We have to drive about 5-10 minutes if we want an unpolluted view.
Attachments
Lower in the sky makes sense, but why more red/pink? Do you know? We tend to see red/purple/pink.
We get greens and blues, sometimes, but they don't photograph well.
We get greens and blues, sometimes, but they don't photograph well.
- Oct 22, 2014
- 23,903
From: Dr. Elizabeth MacDonald
Space Physicist
Dr. Elizabeth MacDonald is a space physicist at NASA Goddard Space Flight Center.
Why are northern lights that appear at low latitudes red?
Two reasons: One, the red occurs at higher altitudes and can thus be seen further away from the poles: sometimes all you see is the upper edge of the red peeking over the horizon. Secondly, during very large storms, there is another kind of aurora that is predominantly red and which occurs at lower latitudes.
Space Physicist
Dr. Elizabeth MacDonald is a space physicist at NASA Goddard Space Flight Center.
Why are northern lights that appear at low latitudes red?
Two reasons: One, the red occurs at higher altitudes and can thus be seen further away from the poles: sometimes all you see is the upper edge of the red peeking over the horizon. Secondly, during very large storms, there is another kind of aurora that is predominantly red and which occurs at lower latitudes.
- Oct 22, 2014
- 23,903
You can see in this video from space the layering of the colors. with Red being above the Green Northern Lights.