Newton, IA Marine Weather and Tide Forecast

Marine Weather and Tide Forecast for Newton, IA

April 21, 2024 4:24 AM CDT (09:24 UTC) Change Location
Sunrise 6:20 AM   Sunset 8:01 PM
Moonrise 5:00 PM   Moonset 4:25 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 Newton, IA
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Area Discussion for - Des Moines, IA
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Area Forecast Discussion National Weather Service Des Moines IA 326 AM CDT Sun Apr 21 2024


- Sunny today with warmer temperatures, some frost/freeze potential remains tonight.

- Warmer and breezy Monday with scattered showers afternoon and evening. Cooler into Tuesday and Wednesday.

- Increasing threat of impactful weather Thursday night into next weekend including strong to severe storms and locally heavy rainfall.

Issued at 326 AM CDT Sun Apr 21 2024

|Ample clear skies and lighter winds overnight have allowed temperatures top slip below freezing over much of the area early this morning and headlines have this well covered. Temperatures should rise rather nicely after sunrise given the dry air and increasing mixing. The threat for some frost remains into tonight, mainly in the east where winds become light enough for temperatures to approach freezing. However, southwest winds increase later tonight from west to east with the departure of the surface ridge along with increasing warm advection. One last headline may be needed primarily in the east tonight and will let dayshift reevaluate.

The broad west northwest flow persist into the early part of the upcoming work week with another shortwave dropping from Canada into the northern Midwest on Monday into Tuesday. Strong warm advection is expected into Monday ahead of the cold front across Iowa with temperatures rebounding well into the 60s and even some 70s in the west. A narrow ribbon of moisture slides northward ahead of the advancing front but in general, moisture is somewhat limited with this system. Scattered coverage (30-40%) of showers and perhaps and isolated (10-20%) thunderstorm are expected in the narrow moisture corridor coincident with the boundary by Monday afternoon, primarily in the northern half of Iowa nearest the deeper lift. The threat shifts southward into Tuesday evening as the boundary settles into southern Iowa although areal coverage remains scattered at best with the limited moisture.

Cold advection intensifies into Tuesday as the upper trof passes across Iowa with relatively robust northwest winds expected. Low level instability develops across the northeast by midday with some a few showers possible with drier conditions farther southwest.
Otherwise, quiet weather is likely into Wednesday as surface ridging passes and weak warm advection commences.

A rather significant change in the pattern occurs into the later half of the work week as western troughiness develops. Initial shortwave comes ashore across southern California before rapidly ejecting northeast into the central United State Thursday night into Friday. The low level jet strengthens across the Plains to 50kts+ on Thursday night with impressive theta-e advection impinging on Iowa late. This is likely to produce widespread thunderstorm activity late Thursday night into Friday morning with some severe threat possible. The surface low passes through Iowa on Friday with some redevelopment expected with peak heating and with potential for severe storms remaining. The pattern remains active into next weekend as strong southwest upper flow maintains across the central United States with ample moisture streaming into the region and the threat for additional rounds of convection. Details will be forthcoming as the timeframe approaches.

Issued at 1142 PM CDT Sat Apr 20 2024

VFR conditions prevail through the period with sunny skies expected tomorrow. Winds will be light to breezy through the day, with the strongest gusts mainly north and east at KFOD, KMCW, and KALO.

Freeze Warning until 8 AM CDT this morning for IAZ004>007- 015>017-023>028-033>039-044>050-057>062-070>075-081>086- 092>097.

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KTNU NEWTON MUNIEARL JOHNSON FIELD,IA 2 sm29 minW 0710 smClear32°F28°F86%30.25
KGGI GRINNELL RGNL,IA 16 sm29 minW 0510 smClear34°F28°F80%30.26
KPEA PELLA MUNI,IA 21 sm29 minW 0610 smClear36°F27°F69%30.27
Link to 5 minute data for KTNU

Wind History from TNU
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GEOS Local Image of Upper Mississippi Valley   

Des Moines, IA,

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