Hammond, IN Marine Weather and Tide Forecast
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Marine Weather and Tide Forecast for Hammond, IN

June 19, 2024 11:42 PM CDT (04:42 UTC) Change Location
Sunrise 5:14 AM   Sunset 8:29 PM
Moonrise 6:36 PM   Moonset 3:00 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.

Marine Forecasts
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LMZ743 Calumet Harbor Il To Gary In-gary To Burns Harbor In- Burns Harbor To Michigan City In- 939 Pm Cdt Wed Jun 19 2024

Rest of tonight - Southeast winds 10 to 15 kt becoming north 5 to 10 kt late. Slight chance of showers and Thunderstorms late in the evening. Patchy fog after midnight. Waves 1 to 2 ft.

Thursday - North winds 5 to 10 kt increasing to 10 to 15 kt. Patchy fog. Slight chance of showers and Thunderstorms in the afternoon. Waves 1 to 2 ft.

Thursday night - North winds 10 to 15 kt diminishing to 5 to 10 kt. Partly cloudy. Waves 1 to 3 ft.

Friday - Northwest winds 5 to 10 kt becoming northeast in the afternoon. Slight chance of showers and Thunderstorms in the afternoon. Waves 1 to 2 ft.

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7 Day Forecast for Marine Location Near Hammond, IN
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Area Discussion for - Chicago, IL
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Area Forecast Discussion National Weather Service Chicago/Romeoville, IL 746 PM CDT Wed Jun 19 2024


- Widely scattered thunderstorms are possible this evening mainly along and north of a Dixon to Waukegan line which could produce locally gusty winds.

- Hot and muggy conditions will prevail through the end of the week, although cooler conditions are expected near Lake Michigan on Thursday and Friday.

- Periodic chances for thunderstorms will continue, though most hours will remain dry.

Issued at 252 PM CDT Wed Jun 19 2024

Through Tonight:

Increasing coverage of cumulus this afternoon combined with deep mixing has helped keep heat indices mostly in check so far this afternoon with temperatures in the upper 80s to lower 90s.
Expect a couple more degrees of warming yet this afternoon with peak heat indices in the 95-100 degree range.

Dry conditions prevail at this hour; however, attempts at shower/storm development is already underway across portions of northwest Illinois into south central Wisconsin ahead of an approaching cold front. Expect this activity to gradually expand in coverage as it shifts southeastward into the Rockford area and along the Wisconsin-Illinois stateline. RAP mesoscale analysis highlights a narrow axis of 1000-1500 J/Kg of MLCAPE ahead of the front which intersects a region of DCAPE values to 1000 J/kg (inverted V soundings) with slow storm motions and little shear (~15kts) suggests that any storms that develop would be rather pulse-like and capable of strong downbursts resulting in locally gusty winds to 50 mph for areas mainly along and north of a Dixon to Waukegan, IL line. A very localized gust to 60 mph can't be fully ruled out.

Hit and miss isolated storm development still can't be fully ruled out south of these areas into Chicago and south of I-80 but this potential remains low with most areas expected to remain dry. Accordingly will continue capping shower/storm chances at 20% in these areas.

In the wake of the frontal passage over the lake, expect fog development over the lake overnight into Thursday morning, this could ooze inland particularly along the immediate shoreline. It is possible that it pushes further inland, per the latest RAP, but confidence in that scenario occurring is not especially high and will let the evening shift get another look at that potential.


Thursday through Wednesday:

A frontal boundary will be meandering across the cwa on Thursday and will likely be the focus for at least isolated thunderstorms with perhaps the best coverage along/north of I-80.
With northeast winds off of Lake Michigan, there may also be enough convergence for isolated thunderstorms in the Metro area as well. Overall confidence is low and current 30-40% pops north to 20% south seem reasonable for now. Some of this activity may linger into Thursday evening, but there should be a gradual decrease in coverage with most of Thursday night dry.

High temps on Thursday may be back into the lower 90s for most areas, especially south of the boundary mentioned above. Lowest confidence for temps is generally from I-88 north and then across then near the lake. Temps will be coolest near Lake Michigan, perhaps only in the upper 70s/lower 80s right along the shore. Where temps do make it to the lower 90s, heat index values may be in the mid/upper 90s.

Most recent trends in guidance would suggest that Friday into Friday night may end up mainly dry across the area. If any precip did develop, probably near the IL/WI state line Friday afternoon. Lowered pops to just slight chance (20%) on Friday and removed pops for Friday night. High temps on Friday are likely to be back in the lower to possibly mid 90s for most areas, except cooler near Lake Michigan with northeasterly winds. Heat index values would again be in the mid/upper 90s, away from the lake.

Winds turn southwest Saturday and increase with gusts possibly into the 30 mph range, ending any cooling near the lake. High temps will reach the mid 90s for most locations but with dewpoints in the mid/upper 60s, heat index values will peak in the upper 90s to around 100.

Thunderstorm chances will be increasing Saturday afternoon into Saturday evening as a cold front moves across the area. Best timing may be after sunset which may limit instability and coverage. Despite a larger scale feature, guidance still showing a range of possibilities from the potential for heavy rain to only scattered coverage. Blended pops are in the likely range (70%) and this seems fine from this distance, though duration is likely to only be a few hours at any one location.
Precip also looks to be progressive with perhaps some lingering showers Sunday morning with most of Sunday likely ending up dry.
Dry weather is then expected through at least Tuesday morning.
By that time the models show another potential chance for thunderstorms sometime from Tuesday afternoon into Wednesday morning and while confidence is low, this has been a time period the models and their ensembles have been highlighting for potential thunderstorms.

The frontal boundary Saturday night/early Sunday morning will bring slightly cooler and slightly drier air, but given peak sun angle and mainly sunny skies, high temps Sunday and Monday may still reach the upper 80s for most locations. cms

Issued at 746 PM CDT Wed Jun 19 2024

- ISOLD SHRA in VC of Chicago terminals, with locally variable/gusty winds, will fade by around sunset - Wind shift to light northwest, then light northeast expected tonight - Northeast winds expected to continue Thursday - SCT TSRA expected, mainly west of ORD/MDW Thursday afternoon

ISOLD SHRA in VC of the Chicago terminals should dissipate by around sunset, but in the meantime small scale weak microbursts will likely lead to splats and variable and gusty winds near the showers.

Cold front will move across the terminals mid-late evening with winds becoming light northwesterly for a time, before likely flopping around to light northeasterly late this evening or during the overnight. There is some uncertainty on timing of shift to light northeasterly, it is possible that could be after 06z even.

Once winds settle in from light northeasterly direction, could see some fog development overnight. Most likely scenario would be some MVFR VSBY in light fog during the pre-dawn hours Thursday. If skies clear out and winds go lighter, than some patches of thicker fog and lower VSBY would be possible, especially DPA/RFD/GYY.

Weak frontal boundary will be stalled out in the area Thursday afternoon. Lake should contort the boundary around the south end of Lake Michigan and may push the more favored area for afternoon SCTD TSRA south and west of ORD/MDW/GYY. Can't rule out SCTD TSRA developing west of ORD/MDW and then being pushed east closer to the terminals into the cool side of the weak front. Confidence is low, so opted to keep TSRA out of ORD, MDW, and GYY for now, but will be something to keep a close eye on.

- Izzi

Issued at 347 AM CDT Wed Jun 19 2024

With a low temperature of 78 degrees, Chicago broke its warmest low temperature record for June 18th yesterday, while Rockford tied its daily warmest low temperature record of 74. A few additional temperature records (namely today's warmest low temperature records and Saturday's high and warmest low temperature records for Chicago and/or Rockford) may be threatened over the next few days.

Here are the daily high and warmest low temperature records for Chicago and Rockford for each day through Saturday, June 22nd:

Chicago ---------------------------------- Day: 6/19 6/20 6/21 6/22 ---------------------------------- Record High: 102 104 101 97 Record Warm Low: 78 78 74 76

Rockford ---------------------------------- Day: 6/19 6/20 6/21 6/22 ---------------------------------- Record High: 99 101 100 97 Record Warm Low: 76 73 71 73


IN...Air Quality Alert until midnight CDT Thursday night for INZ001- INZ002-INZ010-INZ011.

Air Quality Alert from 1 AM Thursday to 1 AM EDT Friday for INZ019.


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
CMTI2 - 9087044 - Calumet, IL 8 mi55 minE 2.9G4.1 77°F 30.1968°F
CNII2 17 mi28 min0G2.9 73°F 64°F
BHRI3 - Burns Harbor, IN 18 mi63 minW 1G4.1 75°F 30.24
45198 19 mi33 minS 3.9G3.9 71°F 65°F1 ft30.23
CHII2 - Chicago, IL 21 mi43 minSSE 6G7 79°F 73°F
OKSI2 21 mi103 min0G1 76°F
45170 29 mi43 minWSW 9.7G19 75°F 2 ft30.26
MCYI3 - Michigan City, IN 32 mi43 minNNW 8G8.9 77°F 30.1967°F
45174 37 mi43 minW 3.9G5.8 70°F 65°F1 ft30.1966°F

Wind History for Calumet Harbor, IL
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KGYY GARY/CHICAGO INTL,IN 4 sm27 mincalm5 smMostly Cloudy Mist 75°F75°F100%30.22
KIGQ LANSING MUNI,IL 7 sm27 mincalm10 smOvercast77°F73°F89%30.23
KMDW CHICAGO MIDWAY INTL,IL 18 sm49 minSE 0310 smA Few Clouds82°F66°F58%30.22
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Wind History graph: GYY
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Chicago, IL,

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