Category Archives: Space Wx

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2017 Solar Eclipse Outlook: Part 1

By now, everyone has their places ready and arrangements made for the solar eclipse that is to occur Monday, August 21st, 2017. As a note of extreme caution, when viewing the eclipse, make certain that you have the proper, certified visual gear to watch the eclipse in safety. For more info on viewing safety, visit:

Two of the biggest questions that have been asked to this point, and naturally so is “will it rain and how will clouds impact my viewing chances of the eclipse?” Both really good questions, yet tough to answer with great certainty beyond a handful of days. The main time window we are looking at for the “start to finish” of the event is from around 9:00 AM (Noon ET) to around 4:00 PM ET. Those in the path of totality will have a much shorter window to view the eclipse in totality, along the order of a few minutes. Here are a few cities that fall in the path of totality. Note that the beginning and end of the eclipse are a much broader widow than the window of totality (a little over two minutes, on average).

Here is a look at rain precipitation chances by the two premier global models, the GFS (American) and the ECMWF (European) outputs.

This GFS output is valid at high noon ET, the commencement of the eclipse for the Pacific Northwest. We can note that as of now (and this will likely change), folks across the Pacific Northwest may run into some hard times viewing the eclipse. We also still have continued showers across parts of the eastern US by noon.

This ECMWF output is valid at high noon ET. We note on this rendering that scattered showers may develop across southern Appalachia but an a clear viewing for the solar eclipse across the Pacific Northwest as the event commences.

And finally, a quick peek at the cloud cover as modeled by both the GFS and ECMWF suggests that cloud cover may play a role in viewing the eclipse for parts of the Pacific Northwest, desert Southwest, Midwest and Appalachia. I suspect that as new data comes out, we will be able to assess locations of high pressure features, lending to a cloud-free environment.

Overall, two regions to watch for are the Pacific Northwest and Appalachia as precipitation and cloud cover chances are heightened at this stage. As noted, these parameters are likely to adjust over the coming week. This discussion was to give you an idea of what we are looking at in the short-term for the solar eclipse. I will have a follow-up forecast discussion a week from this evening (Sunday, August 20th). That discussion will have more detail as we will be within a 24-hour window of the event.

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The Perseid Meteor Shower – The Best of the Year

Over the next few days, it’s time to bring out the astronomer in each one of us. Every year, there are two spectacular meteor showers that put on an incredible celestial show, the Perseids in August and the Geminids in December. The amazing part about these meteor showers is that, contrary to other meteor showers throughout the year, the Perseids and the Geminids usually present around 80-120 meteors an hour.

WHERE: The biggest question is where… where is the best spot to view the Perseids? As long as your away from the pollution of city lights and traffic headlights, you’ll be able to see them anywhere across the world, although the higher rates of meteors per hour will be across the Northern Hemisphere. The Southern Hemisphere will see the Perseids display as well, but probably at half the rate per hour.

WHEN: Another great question is when would I have the best chance at seeing the Perseids? While the Perseids could be viewed for the entirety of the week, the meteor shower will be at its peak tonight (Wednesday), tomorrow night (Thursday) and the pre-dawn hours of Friday. Best time to view is between 12 am and 5 am.

BEST PRACTICE: What’s the best way of viewing the Perseid Meteor shower? Get away from city lights, traffic headlights, street lights, etc. A very rural area with minimal to zero light pollution is ideal. Set your eyes to the sky and let your eyes focus for about 30 minutes to an hour and enjoy the show!

MOONLIGHT: The biggest downfall of a meteor shower is the presence of moonlight as this drowns out the meteor display. The timing is great this year as a “New Moon” phase (little to no moonlight) will overlap the meteor shower this year.

Enjoy the show and take pictures!

Photo by Toby Smith