Tuesday, March2, 2021
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Marine Weather and Tides
Hammond, IN

Version 3.4
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1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:20AMSunset 5:43PM Tuesday March 2, 2021 7:25 PM CST (01:25 UTC) Moonrise 10:55PMMoonset 9:26AM Illumination 81% Phase: Waning Gibbous; Moon at 19 days in cycle
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.
Marine Forecasts
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LMZ743 Expires:202103030415;;374926 Fzus53 Klot 022051 Nshlot Nearshore Marine Forecast National Weather Service Chicago/romeoville Il 251 Pm Cst Tue Mar 2 2021 For Waters Within Five Nautical Miles Of Shore On Lake Michigan Waves Are Provided As A Range Of Significant Wave Heights, Which Is The Average Of The Highest 1/3 Of The Waves, Along With The Average Height Of The Highest 10 Percent Of The Waves Which Will Occasionally Be Encountered. Lmz740>743-030415- Winthrop Harbor To Wilmette Harbor- Wilmette Harbor To Northerly Island- Northerly Island To Calumet Harbor-calumet Harbor To Gary- 251 Pm Cst Tue Mar 2 2021
.small craft advisory in effect until 9 pm cst this evening...
Tonight..Southwest winds 20 to 25 kt easing to 10 to 20 kt in the evening. Clear. Waves 2 to 4 ft subsiding to 1 to 3 ft in the late evening and overnight.
Wednesday..Northwest winds 10 to 15 kt becoming north in the afternoon. Mostly Sunny. Waves 1 ft or less.
Wednesday night..North winds 10 to 15 kt. Partly cloudy. Waves 1 to 3 ft building to 2 to 4 ft after midnight.
Thursday..North winds around 10 kt. Mostly Sunny. Waves subsiding to 1 to 3 ft in the afternoon.
LMZ743


7 Day Forecast for Marine Location Near Hammond, IN
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location: 41.62, -87.49     debug


Area Discussion for - Chicago, IL
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FXUS63 KLOT 022326 AFDLOT

Area Forecast Discussion National Weather Service Chicago/Romeoville, IL 526 PM CST Tue Mar 2 2021

SHORT TERM. 228 PM CST

Through Wednesday night .

Gusty southwesterly winds are ongoing across the area and this will continue to drive a warmer airmass northward over the area through the afternoon and evening. Sunny skies through the rest of the afternoon should allow highs to top out in the 40s for most areas away from the lingering snow pack over north central IL. Expect temperatures tonight to remain much warmer than last night as southwesterly winds continue across the area. Overnight lows will generally be in the lower 30s.

A cold front will sag southward over the area Wednesday morning. This will result in a return to light northerly surface winds across the area during the day. However, with the colder air and cloud cover likely to lag well behind this surface boundary, we are anticipating a decently mild day for Wednesday, especially for inland areas south of the lingering snow pack. In this area, temperatures look to climb into the low to mid 50s. Closer to the lake temperatures are likely to be much cooler, potentially only in the lower 40s due to an early onset to an onshore wind.

While not all hires guidance is hinting at it, I think we are likely to see a fairly substantial lake breeze enhanced cold front develop and push inland through the afternoon and into early Wednesday evening. If this occurs, we can expect to see a substantial drop in temperatures (from the 40s and 50s into the 30s) over most of northeastern IL and northwestern IN late in the afternoon. We may also experience a period of lower clouds with this cold push Wednesday evening.

KJB

LONG TERM. 316 PM CST

Wednesday night through Monday .

Surface high pressure is forecast to dominate across much of the western Great Lakes Thursday and Friday. This will continue to support onshore winds with cooler temperatures over northeastern IL and northwestern IN both days. Expect lakeshore temperatures to top out mainly in the 30s, with inland areas reaching into the 40s. Thursday could also end up featuring more clouds than currently advertised, which could further knock high temperatures down a bit farther inland.

Saturday will start our transition into a warmer pattern as an upper level ridge will build in, and southwesterly low level flow re-develops, with Sunday being the warmer day of the upcoming weekend. High temperatures will commensurately increase each day into early next week, with widespread mid and upper 50s becoming more of a possibility by Monday and Tuesday. We're currently advertising precipitation-free conditions through at least mid-day Tuesday, but the weather pattern does look to trend more active, especially by the middle and end of next week.

Carlaw/KMD

AVIATION. For the 00Z TAFs .

526 PM . Forecast concerns include .

Low Level wind shear tonight. Wind shift to north/northwest Wednesday morning. Wind shift to northeast Wednesday afternoon. Low mvfr/ifr cigs Wednesday evening/night.

Southwest winds will continue tonight and may remain gusty at times this evening. Winds will slowly turn more westerly toward daybreak and then shift north/northwest with a cold front by mid/late Wednesday morning. Winds are then expected to shift to the northeast Wednesday afternoon, for the Chicago terminals, as a secondary cold front/lake breeze moves inland. While confidence is high for all of these changes, only medium confidence for timing. Low level winds will increase this evening and low level wind shear is expected through the predawn hours.

Generally skc is expected through daybreak. There is some potential for some mvfr cloud cover with the first cold front by midday but any lower cloud cover may hold off until after the second cold front when ifr cigs are possible, but confidence is low. The best timing for low mvfr cigs appears to be late Wednesday evening into early Thursday morning.

There is a low potential for some fog across northwest IL Wednesday morning, near and just after sunrise as the first cold front approaches. Confidence is low and no mention with this forecast, but trends will need to be monitored. cms

LOT WATCHES/WARNINGS/ADVISORIES. IL . None. IN . None. LM . Small Craft Advisory . Winthrop Harbor to Gary IN until 9 PM Tuesday.



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Weather Reporting Stations
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Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gary Regional Airport, IN4 mi41 minSW 810.00 miFair39°F32°F75%1017.6 hPa
Lansing Municipal Airport, IL7 mi51 minSSW 610.00 miFair36°F31°F83%1017.3 hPa
Chicago, Chicago Midway Airport, IL18 mi33 minSSW 1010.00 miFair40°F29°F65%1017.3 hPa

Link to 5 minute data for KGYY

Wind History from GYY (wind in knots)
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Last 24hrN5W6W3NW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSW8SW12SW12SW12SW12SW12S12SW12SW8SW8
1 day agoNW12NW14NW15W9W16
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W8W10NW15NW9N4N14N14N12N12N12N10N6N5
2 days agoSE5SE7SE7SE6SE7SE7SE7SE6SE4SE8S7SE5S4S5SW9SW5S7SW9SW10W12W16
G26
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G36
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G25

Tide / Current Tables for
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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