Lake Petersburg, IL Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Lake Petersburg, IL

April 21, 2024 3:58 AM CDT (08:58 UTC) Change Location
Sunrise 6:09 AM   Sunset 7:44 PM
Moonrise 5:46 PM   Moonset 5:13 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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7 Day Forecast for Marine Location Near Lake Petersburg, IL
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Area Discussion for - Central Illinois, IL
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FXUS63 KILX 210447 AFDILX

Area Forecast Discussion...Updated Aviation National Weather Service Lincoln IL 1147 PM CDT Sat Apr 20 2024

KEY MESSAGES

- Freeze warning in effect from Schuyler to McLean county north from 3-8 am Sunday, with a Frost Advisory south to Shelby, Coles and Edgar counties. Low temperatures by dawn Sunday in the low to mid 30s with widespread frost expected north of I-70. There is a 50-80% chance of below freezing temperatures at dawn Monday north of I-72.

- Our next chance for showers and isolated thunderstorms arrives later Monday night into Tuesday.

- A more active and warmer period with showers and thunderstorms is shaping up for Friday into next weekend. SPC has a 15% risk of severe storms west of I-55 on Friday afternoon/evening.

UPDATE
Issued at 831 PM CDT Sat Apr 20 2024

A modest northwest breeze persists across central Illinois ahead of an expansive ridge over the Great Plains. Winds should continue to gradually taper off, especially as low clouds thin from the south. Low clouds have already diminished south of I-72 but will be replaced by cirrus at times. Temps are on track to fall into the lower to mid 30s north of I-70, while thicker cirrus may prop temps up slightly further south. Assuming clouds clear out late tonight as currently expected, frost/freeze headlines should be on track.

Deubelbeiss

DISCUSSION
Issued at 330 PM CDT Sat Apr 20 2024

Broken stratocumulus clouds with bases around 5k ft were along and north of I-72 with mostly sunny skies south of I-72. Thicker cirrus clouds were streaming eastward over southern IL, with just thin cirrus into southeast CWA Cool temperatures were in the mid 40s from Macomb to Bloomington northward with mid 50s along highway 50 in far southeast IL. Breezy WNW to NW winds 10-18 mph with gusts 22-32 mph prevailed over central/se IL.

Stratocumulus clouds to pivot into southeast IL late today and these clouds are forecast to decrease from the nw during overnight as NW winds diminish after sunset. NW winds have brought in drier air today with dewpoints in the mid to upper 20s. Guidance pretty close with lows in the low to mid 30s overnight, coolest in northern CWA where 30-33F and have issued a freeze warning from 3-8 am Sunday from Schuyler, Mason, Tazewell and McLean counties northward. Have a frost advisory south of the freeze warning, as far south as Shelby, Coles and Edgar counties. Patchy frost possible in southeast IL late tonight/early Sunday morning where lows in the mid 30s.

Canadian high pressure to drift into the Ozarks Sunday afternoon and mid MS river valley Sunday night. Still a bit breezy nw winds on Sunday, though not as breezy as yesterday and today as pressure gradient starts to weaken. Ample sunshine expected Sunday with few afternoon cumulus clouds and thin cirrus. Highs Sunday in the upper 50s to near 60F. Frost likely again overnight Sunday night into early Monday morning with lows in the mid to upper 30s and may need a frost advisory. Breezy sw winds develop by Monday afternoon over central IL and to see some increasing clouds as well especially IL river valley by Monday afternoon. More seasonable highs in the mid to upper 60s on Monday. Not as cold Mon night with lows in the upper 40s eastern IL and lower 50s over the IL river valley. Northern stream system moving into the upper Midwest Monday night and over the northern Great Lakes Tue to bring a cold front se through central IL Tue afternoon/evening.
Have chances of showers and isolated thunderstorms over IL river valley/nw CWA overnight Monday night, and spreading se over rest of CWA during Tue. CAPES/Instability is low on Tue so risk of severe storm is low as deeper gulf moisture stays south of IL.
Have chance of showers and isolated thunderstorms Tue evening mainly over eastern half of CWA, then dry overnight Tue night and Wed as 1030 mb high pressure ridge builds into western Ontario and ridging into IL by Wed afternoon. Cool lows Wed night in the upper 30s to around 40F, with mid 30s possible from Champaign ne where patchy frost possibly by dawn Thu.

Some upper level ridging into the MS river valley Thu and should mostly stay dry over much of central and eastern IL on Thu.
Stronger low pressure moving into the central plains on Thu night to have a cold front moving east toward IL Fri evening with increasing chances of showers and thunderstorms late Thu night and Friday. More instability expected with this storm system especially western CWA where SPC has 15% risk of severe storms late Fri afternoon and Fri evening. Models have trended slower with this storm system so could see lingering convection chances into Saturday with warmer highs in the 70s.

07

AVIATION
(For the 06z TAFs through 06z Sunday Night)
Issued at 1146 PM CDT Sat Apr 20 2024

High pressure will remain over the Great Plains Sunday resulting in a light NW breeze and VFR conditions across central Illinois.
Winds will pick up diurnally into the 10-13kt range during the day Sunday, then settle back down to around 5kt as they back to the W/WSW Sunday evening.

Deubelbeiss

ILX WATCHES/WARNINGS/ADVISORIES
Freeze Warning from 3 AM to 8 AM CDT Sunday for ILZ027>031- 036>038-040-041.

Frost Advisory from 3 AM to 8 AM CDT Sunday for ILZ042>057-061.




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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KSPI ABRAHAM LINCOLN CAPITAL,IL 17 sm66 minno data--30.24
KIJX JACKSONVILLE MUNI,IL 23 sm23 minWSW 0410 smMostly Cloudy32°F28°F86%30.25
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Central Illinois, IL,



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