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Misc Solar Eclipse Forecast

SD said:
No no no no no
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Head west young man...
 
Just received this email from a local optometrist:

The Right Way To Watch The Solar Eclipse
On Monday, August 21, 2017, many of us in the United States will experience the first total solar eclipse in 38 years. Few people were lucky enough to see the last total eclipse as it was visible in only five states; the 2017 eclipse will be visible across 12 states – from Oregon to South Carolina. What should you expect on August 21, and how will watching it affect your vision?
What Will Happen
A solar eclipse occurs when the moon passes between Earth and the sun. The moon will cover at least part of the sun for two to three hours, with the moon blocking the sun completely for no more than three minutes. The temperature will likely drop about 10 degrees and, in areas under this shadow, day will turn into night.
Where It Will Happen
You won’t necessarily be able to look outside your window and suddenly see darkness. Those living within the “path of totality,” or the 70-mile-wide, 3,000-mile-long area that will lie in the moon’s shadow, will have the best view of the total eclipse. People outside of this area will see a partial eclipse, where the moon covers only some of the sun. Approximately 12 million people live within the path of the total eclipse, while another 7 million are expected to travel to those areas to enjoy the moment.
Protecting Your Vision
Here are a few tips for protecting your vision during this rare and visually mesmerizing moment in nature:
  • Regular sunglasses aren’t enough protection during an eclipse. Some companies offer “eclipse viewing glasses” or other eye gear specifically designed for watching the eclipse, which can make viewing the event safer for your vision.
  • If you’re considering buying eclipse glasses or solar viewing cards, make sure they’re marked with ISO 12312-2, which is the universal standard for safely blocking solar UV and IR radiation.
  • The weather during the eclipse may impact its visibility, but even in cloudiness, it’s never safe to stare directly into the sun, especially without any UV protection.
  • Be sure to avoid using binoculars, exposed film, smoked glass, polarizing filters or any other objects that might “dim” the sun, but not protect against solar radiation.

On August 21, your eyes will likely see an incredible sight, but take extra care of your vision to experience it safely. Talk with your eye doctor if you have any questions about protecting your eyes during (or after) the eclipse.

Disclaimer: This advice is general in nature and does not constitute an exam. For specific advice, see your eye doctor or healthcare professional.


(Sources: Astronomy Magazine, http://cs.astronomy.com/asy/b/astronomy/archive/2014/08/05/25-facts-you-should-know-about-the-august-21-2017-total-solar-eclipse.aspx; AOA, https://www.aoa.org/patients-and-public/caring-for-your-vision/2017-solar-eclipse?sso=y; Conde Nast, http://www.cntraveler.com/story/why-you-should-plan-a-trip-now-to-see-the-2017-solar-eclipse; AAS, https://eclipse.aas.org/eye-safety/iso-certification; The Washington Post, https://www.washingtonpost.com/news/speaking-of-science/wp/2017/07/21/a-total-solar-eclipse-is-happening-aug-21-and-heres-what-you-need-to-know/?hpid=hp_hp-more-top-stories-2_eclipse-930a:homepage/story&tid=a_inl&utm_term=.9dc1541e9dd5)
 
Storm5 said:
I've seen 4 images like this today on twitter all showing different things


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I would say you can't tell until 5 minutes before the eclipse. A shower can pass you and can clear just before the start of totality. Have to really wait on the NAM to get in range since the GFS is a very low resolution compared to it.
 
Storm5 said:
I received a package in the mail today that 100 percent validates how awesome the members of this board truly are. Skywatcher sent me a pair of eclipse glasses !!!! I have been looking everywhere for them over the last two weeks and everywhere I went they we sold out . But today thanks to the kindness of skywatcher I have a pair!!! Might not seem like a big to some but it completely made my day . Thank you so much
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I cannot possibly say it as eloquently or succinctly as Storm, but Skywatcher did me the same favor - and she was the one who instituted it in a PM exchange a few days ago (my glasses arrived 10 minutes ago), and it just goes to show what a great member she is, and on a larger scale that we are not a "Board" but something just a tad bit more kindred ...
I've sent my private thanks to Skywatcher, but just want everyone to know what a great member she is :), and I want to thank her publicly; and taking it a step further, that goes for the rest of ya'all. :cool:
Phil
 
My local weatherperson , was saying something about a warm front coming North on Monday and saying it could be a lot cloudier than previously thought and could be thicker further South, which is also closer to the longest totality! :(
Just saw the TWC viewing forecast, cloud cover, I'm assuming , and it had poor/so-so over 90% of SC! Guess it'll be a nowcasting situation!
Not sure the traffic will be as " doomsday " as some are thinking, but if clouds were over CAE or CHS, and a last " minute" dash by hundreds of thousands of people to get to a sunny location, could be very bad! Also, this is Anderson SC biggest tourist attraction in history, with 1 million tourists expected in the county/city! And right on cue, TWC local forecast has mostly cloudy on Monday! :(
 
Just read where NASA recommends that you use a shade 14 lense in welding helmets. That is crazy to me. I wonder if that is just butt covering by them.
 
Storm5 said:
What shade do you use ?


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Actually finding the Nasa page and not relying on first search USA Today article states shade 12 and above. So my auto darkening helmet goes up to 13 so it will be good. I'll check the one at work but we have a pair of welding goggles we can wear under the helmet if it isn't strong enough.
 
Arcc said:
Actually finding the Nasa page and not relying on first search USA Today article states shade 12 and above. So my auto darkening helmet goes up to 13 so it will be good. I'll check the one at work but we have a pair of welding goggles we can wear under the helmet if it isn't strong enough.
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i weld at work myself... just think i was going to use a number 11... thanks for the info arcc...
 
tennessee storm said:
i weld at work myself... just think i was going to use a number 11... thanks for the info arcc...
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Here is the page and quote for everyone else.

https://eclipse2017.nasa.gov/safety

Viewing with Protection -- Experts suggests that one widely available filter for safe solar viewing is welders glass of sufficiently high number. The only ones that are safe for direct viewing of the Sun with your eyes are those of Shade 12 or higher. These are much darker than the filters used for most kinds of welding. If you have an old welder's helmet around the house and are thinking of using it to view the Sun, make sure you know the filter's shade number. If it's less than 12 (and it probably is), don't even think about using it to look at the Sun. Many people find the Sun too bright even in a Shade 12 filter, and some find the Sun too dim in a Shade 14 filter — but Shade 13 filters are uncommon and can be hard to find.
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The band of cloudiness/showers that is currently stretched from S FL NNE into the Atlantic is progged by model consensus to move NW to near and just inland of the SC coast tomorrow just in time to quite possibly block out much of the eclipse viewing for a good portion of those areas tomorrow afternoon. Let's see what actually happens
 
^ Thanks, Jon. So, based on the key to the map, white areas are actually where there isn't much cloudcover? Am I looking at this correctly?
 
GaWx said:
^ Thanks, Jon. So, based on the key to the map, white areas are actually where there isn't much cloudcover? Am I looking at this correctly?
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On the Nam model runs yes, white is no cloud cover. The color scales on the modeled output and the nws are opposite - so that doesn't help lol!


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