🌘 🌑 🌗 🌕 Waning Crescent Moon, sky cover overnight Thurs. to Fri., Mostly Cloudy then a few Clouds, winds S , 9 to 10 MPH, G16 to 15 to 16 MPH, Low 34, 5a to 7a
IMPORTANT NOTE ON NWS DATA
No Watches or Warnings overnight Thursday to Friday.
Updates at Arlingtoncardinal.com/NWSChicago
Good stargazing after clouds clear.
O’HARE FORECAST …
Forecast Beginning Thursday Night, Oct. 20, 2022
Thursday Night Partly cloudy, with a low around 39. West northwest wind around 5 mph becoming calm. Winds could gust as high as 10 mph.
Friday Mostly sunny, with a high near 71. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night Mostly clear, with a low around 54. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Sunny, with a high near 75.
Saturday Night Mostly clear, with a low around 60.
Sunday Mostly sunny, with a high near 75. Breezy.
Sunday Night A chance of showers after 2am. Mostly cloudy, with a low around 61.
Monday A chance of showers. Mostly cloudy, with a high near 72.
Monday Night A chance of showers. Mostly cloudy, with a low around 51.
Tuesday A chance of showers. Mostly sunny, with a high near 60.
Tuesday Night A chance of showers. Mostly cloudy, with a low around 43.
Wednesday Mostly sunny, with a high near 54.
O’Hare forecast archive and hourly weather observations archive are available HERE on the CARDINAL NEWS Magazine.
NIGHT SKY THIS MONTH …
Check the night sky objects for this month and past months in the playlist from the Space Telescope Science Institute YouTube channel Backyard stargazers get a monthly guide to the northern hemisphere’s skywatching events with “Tonight’s Sky” (Musical track The Far River written by Jonn Serrie, from the album And the Stars Go With You courtesy of New World Music Ltd. Musical track The Far River written by Jonn Serrie, from the album And the Stars Go With You courtesy of New World Music Ltd).
Telephoto lens, ISO 100, f/11, Shutter Speed 1/100 to 1/125 for the Moon.
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Telephoto lens, ISO 1600, f/11, Shutter Speed 2.5″ for the skyline. The skyline exposure was toned down, and brightness and contrast was adjusted in Photoshop.
Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
809 PM CDT Thu Oct 20 2022
Issued at 809 PM CDT Thu Oct 20 2022
No significant changes to going forecast this evening, with dry and quiet conditions expected overnight and into Friday morning. Friday forecast also looks on track, as breezy south-southwest winds bring much warmer temps to the area.
Upper level flow pattern is undergoing a change as we reach the end of the work week, with a long-wave upper level trough breaking down and a more zonal component developing ahead of developing western trough development this weekend. Low level winds have already backed southwesterly, which brought 60+ degree weather earlier today. Surface winds have slackened with sunset however, and with dry low levels featuring dew points ranging from the upper 20s to mid 30s, these light/calm winds will support overnight lows in the 30s in most spots (low 40s in the city). Other than some thin patchy high cirrus spilling in from the north-northwest, skies will otherwise be clear overnight. Southwest winds will pick up again Friday morning, with gusts around 30 mph developing by midday/afternoon. Warm advection and little cloud cover should allow temps to surge into the 70s for afternoon highs, a good 10-15 degrees above our averages for this time of year.
Going forecast has all of the above well in hand, and other than making some near term temp/dew point adjustments to account for some quick evening drop-offs as winds diminish, no significant changes appear warranted.