Friday, January28, 2022
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Marine Weather and Tides
Nevada, IA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 7:29AMSunset 5:25PM Friday January 28, 2022 6:06 AM CST (12:06 UTC) Moonrise 4:18AMMoonset 1:24PM Illumination 16% Phase: Waning Crescent; Moon at 26 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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7 Day Forecast for Marine Location Near Nevada, IA
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location: 42.02, -93.46     debug


Area Discussion for - Des Moines, IA
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FXUS63 KDMX 281138 AFDDMX

Area Forecast Discussion National Weather Service Des Moines IA 538 AM CST Fri Jan 28 2022

. Updated for the 12z Aviation Discussion .

DISCUSSION. /Today through Thursday/ Issued at 412 AM CST Fri Jan 28 2022

Primary messaging highlights:

* Cold start today, with a slow recovery to near normal for the weekend * Low confidence snow chances in the middle of next week * Return to below normal temperatures for the middle to latter portions of next week

A SW-NE long wave trough axis continues to push through Iowa early this morning with any lingering clouds and what turned out to be over performing snow chances to the south and east. The trailing surface high and more ideal radiational cooling conditions are a little behind schedule from yesterday's expectations, but there will be no change in the advisory with wind chills verifying more from wind than colder temps. Temp recovery will be slow today due to the slightly slower ridge movement with appreciable low level warm advection not returning until this evening with temps steady or slowly rising into the night. Our recent northwest flow pattern will continue through the weekend, but with rising heights leading to temperatures either side of normal. Weak short waves will drop through the Upper MS Valley in this flow, but the forecast will remain dry with insufficient moisture. Saturday will be the warmest day with only a slight cool down Sunday behind a weak front associated with the minor waves.

Our pattern change leading to brief but welcome warming and then increased precip chances will start early next week. Zonal flow Monday should quickly be followed by a northern Plains short wave and associated frontal passage Monday Night, and then what will become an established central CONUS mean trough through the end of next week. The models are still having difficulty trying to resolve the degree of phasing within this trough evolution, resulting in different northern and southern stream short wave emphasis. One apparent signal through has been a more recent change pushing the surface front and baroclinic zone farther to the south and east into the OH Valley based on recent ensemble and deterministic solutions. This suggests Iowa would mainly see weaker mid level forcing and precip with better 1-3km thermodynamic support just to the south and east. Ensemble guidance and examination of individual ensemble members still show a wide range of solutions however, likely due to variability with baroclinic zone placement. The spread varies from nearly dry to heavy amounts NW-SE. Thus while southeast Iowa would still appear to remain the more favorable location for accumulating snow around midweek, confidence in timing, location, and ultimately snow amounts is still low for now resulting in no better than chance PoPs spread out from Tue Night through Thu Night. There is higher confidence in dry conditions and below normal temperatures for the end of the period and beyond with several days of below normal temps, but not extreme Arctic cold likely.

AVIATION. /For the 12Z TAFS through 12Z Saturday morning/ Issued at 537 AM CST Fri Jan 28 2022

Confidence is medium to high that VFR conditions will persist through the period. Skies should be clear initially, with patchy mid clouds likely later today into tonight. Winds will be light from the northwest today, then becoming light southerly tonight.

DMX WATCHES/WARNINGS/ADVISORIES. Wind Chill Advisory until 9 AM CST this morning for IAZ004>007- 015>017-023>028-035>039.



DISCUSSION . Small AVIATION . Small


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ames, Ames Municipal Airport, IA9 mi74 minNNW 1110.00 miFair-2°F-9°F72%1031.9 hPa
Boone Municipal, IA21 mi72 minNNW 1310.00 miFair-2°F-6°F84%1030.5 hPa
Ankeny Regional Airport, IA24 mi72 minNW 810.00 miFair0°F-8°F71%1031.2 hPa

Link to 5 minute data for KAMW

Wind History from AMW (wind in knots)
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Last 24 hrW7W8NW9NW10--NW11NW17
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1 day ago0SE3SE5SE6S9S13S12S13S14S14S13
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2 days agoNW6NW7NW8N10N7N9NW7NW13N10NW6NW4N5N7N7NW6N3W5W5W6W40000

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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