🌖 🌗 🌑 🌓 Waning Gibbous Moon, sky cover overnight Sun. to Mon., 68% to 47 to 93%, winds WNW to NW, 14 to 17 MPH, G26 to 22 to 28 MPH, Low 34, 7a to 10a
NWS CHGO | NWS HRLY | /NWSchicago | 🌡
ARLINGTON HEIGHTS WEATHER
▴ forecast7 (Arl. Hts.) | RADAR | WIDE RADAR
IMPORTANT NOTE ON NWS DATA
No Watches or Warnings overnight Sunday to Monday.
Updates at Arlingtoncardinal.com/NWSChicago
Lake-induced instability across Lake Superior and Lake Michigan was producing more widespread shower coverage northeast and north of the forecast area, with mainly just some isolated to scattered sprinkles and light showers wrapping southeastward across southern Wisconsin and northern Illinois, which will likely persist through late evening along/north of the I-90 corridor across northern Illinois. The precipitation is likely to fade with the passage of the stronger forcing (air rising) with the upper wave (usually rising air associated with cold advection at lower levels). Temperatures forecast to settle in the low-mid 30s by morning.
O’HARE FORECAST …
Forecast Beginning Sunday Night, Oct. 15, 2022
Sunday Night: Isolated sprinkles before 1am. Mostly cloudy, with a low around 34. West northwest wind around 15 mph, with gusts as high as 25 mph.
Monday: A chance of flurries between 11am and noon, then a chance of snow showers after noon. Mostly cloudy, with a high near 40. Breezy, with a northwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.
Monday Night: A chance of snow showers, possibly mixing with rain after 8pm, then gradually ending. Mostly cloudy, with a low around 31. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 30%.
Tuesday: Partly sunny, with a high near 46. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Tuesday Night: Partly cloudy, with a low around 30. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday: Mostly sunny, with a high near 46.
Wednesday Night: Partly cloudy, with a low around 34.
Thursday: Mostly sunny, with a high near 55.
Thursday Night: Mostly cloudy, with a low around 38.
Friday: Mostly sunny, with a high near 64.
Friday Night: Partly cloudy, with a low around 47.
Saturday: Sunny, with a high near 70.
Saturday Night: Mostly clear, with a low around 55.
Sunday: Mostly sunny, with a high near 71. Breezy.
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
835 PM CDT Sun Oct 16 2022
Issued at 835 PM CDT Sun Oct 16 2022
Expanded mention of sprinkles a little to encompass an area generally along/northeast of a Rockford to Chicago/Michigan City line through this evening. Otherwise, going forecast is right on track and no other significant changes were made at this time.
Robust low level cold advection persists this evening,within blustery northwest flow in the wake of this early morning`s cold frontal passage. GOES water vapor imagery and 00Z upper air analysis depicts a fairly strong mid-level short wave trough digging southeast across WI/northern IL, while low levels continue to slowly cool/moisten within the cloud bearing layer in stee Plow-level lapse rate regime across the region. Deeper saturation (as noted in GRB 00Z RAOB) and lake-induced instability across Lakes Superior and Michigan was producing more widespread shower coverage northeast and north of the forecast area, with mainly just some isolated to scattered sprinkles and light showers wrapping southeastward across southern WI/northern IL. These will likely persist through late evening along/north of the I-90 corridor across northern IL, before fading with the passage of the stronger forcing with the upper wave. Other than expanding sprinkle coverage over far northeast IL as mentioned above, remainder of overnight forecast appears to be on track with temps eventually settling into the low-mid 30s by morning.
Going forecast continues to look good into Monday, with active weather expected as outlined in previous short-term discussion.