Marine Forecasts

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7 Day Forecast for Marine Location Near Lincolnwood, IL

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Area Discussion for - Chicago, IL

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FXUS63 KLOT 061127 AFDLOT

Area Forecast Discussion National Weather Service Chicago/Romeoville, IL 527 AM CST Fri Dec 6 2019

SHORT TERM. 330 AM CST

Through Saturday .

After a mild afternoon with temps in the upper 40s to low 50s, a cold front has made its trek across the forecast area early this morning ushering in a period of cooler temps for today. Winds have become gusty at times behind the front out of the north, with gusts to 25-30mph and occasionally higher gusts possible through midday. Rockford has already gusted to 30 mph so far this morning. Expect temps to continue their gradual drop to near 30, with morning lows likely occurring even a few hours after sunset with continued cold air advecting into the region. A fairly expansive, albeit patchy stratus deck has moved in behind the front this morning as well and should linger through late morning before gradually lifting and moving off to the southwest. Even if skies manage to clear out more quickly today, still expect highs to remain in the 30s.

The stronger north winds this morning will increase wave action on Lake Michigan through the afternoon, with waves building into the 6-9 ft range for the northwest Indiana nearshore, which is approaching lakeshore flood advisory criteria.

By tonight surface high pressure moves in overhead with clear skies and light winds suggesting lows drop quite quickly into the low to mid 20s. Some areas could see lows in the teens by early Saturday morning, especially areas west of the metro. Winds turn southerly on Saturday as the high shifts off to the east. This should help bring in some warmer air, with highs generally around 40.

Petr

LONG TERM. 320 AM CST

Saturday night through Thursday .

The long term forecast period will start out relatively mild as the region will be under broad warm advection in swly flow between sfc high pressure over the Mid-Atlantic region and a sfc trough/cold front across the Central Plains. Lows Sunday morning should be in the lower 30s. Prevailing southwest flow will continue through the day on Sunday as the sfc trough/cold front progression slows, blocked by sfc ridging through the sern CONUS/ern GLFMX. Highs Sunday should be in the middle to upper 40s, with the chance for temps to reach 50 F, particularly for the far southern portions of the CWA. Pcpn associated with the approaching system may begin as early as late Sunday afternoon over the far nwrn portions of the CWA as the front approaches, but better chances for pcpn, mainly in the form of rain, will begin sunday night and continue into Monday night. As the cold front pushes across the region on Monday, winds will shift from swly to nwly through the afternoon, with strong cold advection setting up in the wake of the fropa. Temperatures should drop off quickly Monday night while nwly winds strengthen, with gusts of 25-30 mph likely. By Tuesday morning, temperatures will range from the middle teens northwest to the middle 20s southeast. Pcpn will transition from rain to snow as the colder air filters in behind the cold front, with some light accumulation possible. Following the passage of this system, the main forecast concern will be temperatures for the middle of next week. Latest long range guidance continues to suggest lows in the single digits across portions of the area north and west of a line from Chicago to Pontiac, with 10 to 12 F south and east of this line. There will likely be little moderation to temperatures as arctic high pressure slides across the area Wednesday and then settles into the Ohio Valley Thursday. With winds expected to remain arnd 10-15 mph, wind chill readings should be in the should may drop to -5 to -10 F for Tuesday and Wednesday morning. Conditions should begin to moderate by Thursday as the arctic high pushes into the sern CONUS and flow shifts to swly.

AVIATION. For the 12Z TAFs .

The concerns with the Chicago area TAFs are this morning's gusty northerly winds.

In the wake of a cold front that passed very early this morning, gusty northerly winds will continue through the morning. Confidence is high in gusts exceeding 20 kt being frequent through this morning, with some exceeding 25 kt, especially through 14Z. After 16Z, gusts should start to diminish, but probably only gradually through 18Z-19Z, and then abate altogether. Confidence in wind speeds through the TAF is medium-high.

As for forecast wind direction, 350-360 degrees this morning is with high confidence, and 360-010 this afternoon is with medium confidence.

As for clouds, a broken layer of MVFR will be passing over the region this morning before strengthening subsidence and weakening cold advection result in the clouds scattering.

MTF

LOT WATCHES/WARNINGS/ADVISORIES. IL . None. IN . None. LM . Small Craft Advisory . IL nearshore waters until 6 PM Friday.

Small Craft Advisory . IN nearshore waters until midnight Saturday.



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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
CHII2 - Chicago, IL	4 mi	39 min	NNW 21 G 22	35°F				29°F
CNII2	7 mi	29 min	NNW 12 G 19	34°F				27°F
CMTI2 - 9087044 - Calumet, IL	16 mi	59 min	NNW 15 G 20	35°F			1023.5 hPa	28°F
MCYI3 - Michigan City, IN	41 mi	39 min	N 26 G 28	37°F				28°F
KNSW3 - Kenosha, WI	45 mi	29 min	NNW 13 G 18	33°F			1024.7 hPa (+2.7)

Wind History for Calumet Harbor, IL

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11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

5 PM

6 PM

7 PM

8 PM

9 PM

10 PM

11 PM

12 AM

1 AM

2 AM

3 AM

4 AM

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

Last 24hr

S8

S8 G11

S9 G12

S10

S9 G13

S8 G13

S5 G8

S6 G9

S7 G10

S9 G12

S5 G8

S6 G9

SW6

SW6 G10

SW5 G8

SW4 G9

W3 G8

N10 G13

NW12 G18

N20 G27

NW16 G25

NW17 G23

N16 G25

N15 G22

1 day ago

W6 G17

W8 G18

W11 G18

W8 G16

W6 G17

W6 G13

W6 G11

W8 G15

W6 G10

W6

NW7 G12

W2

W3

SW3

SW3

SW5

SW5

SW4

SW3

S3

SW3

SW3

SW4

S4

2 days ago

SW10 G16

SW10 G14

SW9 G19

SW11 G18

SW12 G18

SW10 G18

SW6 G12

SW6 G12

SW7 G13

SW9 G15

SW8 G12

SW8 G11

SW7 G11

SW8 G17

SW8 G14

SW7 G14

SW8 G13

W7 G12

SW10 G16

SW10 G16

W8 G16

W5 G14

SW10 G18

W8 G15

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Chicago, Chicago Midway Airport, IL	13 mi	36 min	N 15 G 21	10.00 mi	Mostly Cloudy	35°F	24°F	64%	1025.3 hPa
Chicago, Chicago-O'Hare International Airport, IL	14 mi	38 min	N 16	10.00 mi	Mostly Cloudy	35°F	24°F	64%	1025.1 hPa
Chicago / Wheeling, Pal-Waukee Airport, IL	18 mi	37 min	N 9	10.00 mi	Overcast	35°F	24°F	64%	1025.9 hPa

Link to 5 minute data for KMDW

Wind History from MDW (wind in knots)

11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

5 PM

6 PM

7 PM

8 PM

9 PM

10 PM

11 PM

12 AM

1 AM

2 AM

3 AM

4 AM

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

Last 24hr

S8

S9

S7

S8

S10 G17

S7

S6

S5

S7

S7

S7

SW5

SW6

SW6

SW8

W8

W7

N10

N16 G24

N17 G25

N14 G21

N15 G25

N14 G22

N15 G21

1 day ago

W14 G23

W18 G26

NW19 G26

NW16 G26

W15 G29

W12 G19

NW11

W11 G19

W10

W7

W5

NW5

W4

W4

W5

W5

W3

W6

Calm

Calm

Calm

S3

SW4

SW5

2 days ago

SW12

W13

SW16 G21

SW14

W15 G21

SW10

SW8

SW8

SW11

SW11

W8

W10

W10

W9

W12 G19

W9

W10

W11

W10

W9

W8

W8

W10

W13 G21

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Tide / Current Tables for

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Tide / Current Tables for

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Weather Map

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GEOS Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Chicago, IL (11,2,3,4)

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Ground Weather Radar Station Chicago, IL

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