Sunday, July25, 2021
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Marine Weather and Tides
Wood Lake, NE

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 6:31AMSunset 9:08PM Sunday July 25, 2021 11:03 AM CDT (16:03 UTC) Moonrise 9:44PMMoonset 6:56AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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 Wood Lake, NE
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location: 42.73, -100.36     debug


Area Discussion for - North Platte, NE
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FXUS63 KLBF 251127 AAA AFDLBF

Area Forecast Discussion . UPDATED National Weather Service North Platte NE 627 AM CDT Sun Jul 25 2021

SHORT TERM. (Today through Monday) Issued at 349 AM CDT Sun Jul 25 2021

Forecast concerns focus on the potential for thunderstorm activity today in addition to significant heat expected later this upcoming week.

Period begins with modest northwesterly flow aloft with the area situated between weak surface high pressure along the Minnesota/Iowa border and modest surface lows across the Central Rockies. Main driving force for sensible weather today will be the aforementioned high pressure system with easterly low-level flow expected to veer to more southerly later today. Surface cool front that tracked through the area earlier has settled across northern Kansas. Enough upper-level energy . in the form of a right-entrance region of a modest h25 jet coincident with some WAA . is allowing a few thunderstorms to percolate across our far southeast zones. Morning NWP guidance has not had a very good handle on this activity, most notably the HRRR. Meanwhile, the RAP was the most bullish on this activity and suggests further expansion later this morning further north and west. Do believe this solution is a bit aggressive but given the expectation that the support previously listed should linger through sunrise, will maintain at least slight chance (15- 24%) PoPs across much of southwest Nebraska. Given this area of convection and residual cloud cover, did lower highs slightly with low 90s expected south of Highway 2 and mid to upper 90s expected elsewhere. As mentioned before, winds will become more southerly later today as surface high pressure east of the area shifts to the south and east down the Mississippi River valley. This will push a plume of richer moisture north across southwest Nebraska up through the Panhandle later today. With expected highs today reaching the 90s in these areas, moderate instability (around 2000-3000 j/kg MLCAPE) will develop later this afternoon. Southeasterly surface winds combined with west-northwest flow aloft will allow for sufficient deep-layer shear for the potential for an isolated strong or briefly severe thunderstorm should one develop. The question remains if one will develop or not. At this time, confidence is low in this occurring as heights begin rising this afternoon and any appreciable source of lift appears to stay north of the area closer to the now warm front that will have moved through the area into South Dakota. As such, will limit thunderstorm coverage to areas south of Highway 92 and west of Highway 47. Expect any rain and thunderstorm activity that should manage to develop to shift south of the area fairly quick this evening leaving the bulk of the overnight dry. Under partly clear skies, lows will fall into the 60s. Similar, if not a touch warmer, temperatures are expected Monday with only modest increases in temperatures off the surface but weaker mixing of the boundary layer. This will again yield afternoon highs in the 90s with upper 90s possible along the South Dakota border. Though air temperatures will be quite warm across our northern zones, humidity will be limited thus keeping heat index values below Advisory criteria.

LONG TERM. (Monday night through Saturday) Issued at 349 AM CDT Sun Jul 25 2021

Beginning 00z Tuesday. Ridging across the southwest will begin to strengthen as is slowly tracks onto the Central Plains. NWP guidance is in good agreement in developing a 595 dam ridge centered over southwest Nebraska/northwest Kansas by Wednesday. NAEFS advertises this as 2-3 standard deviations above climatology with h85 temperatures around 2-3 standard deviations above climatology as well. Enhanced southwesterly flow will be more than adequate to yield deep mixing of the boundary layer to tap into the plume of warm air aloft. With temperature h7 temperatures generally around 14- 16 degC, expecting afternoon high temperatures to climb into the upper 90s and 100s for all locations Tuesday and Wednesday. The warmest of these days is expected to be Wednesday with current forecast highs in the 50th to 75th percentile range as of now. There remains good ensemble support for the coming heat so considering this fairly high confidence at this point. Heat headlines will likely be needed in the coming days, but duration criteria for an Excessive Heat Warning appears to not be met at the moment (4 consecutive days of Heat Advisory criteria).

Canadian high pressure system will approach the area on Thursday, breaking our heat spell though temperatures should remain near to slightly above normal for Thursday into the following weekend. Precipitation chances will also return to the area as the surface boundary on the forward edge of the high pressure will provide the focus and upper-level support improves (cooling mid-level temps, weak height falls, perturbations within the flow aloft). For now, minor differences in ridge location and surface features preclude higher confidence in timing and placement of best PoPs. Utilizing the model blend gives greatest probabilities during the evening hours Thursday, Friday, and Saturday for much of western Nebraska however this is subject to change as models begin to resolve their differences. The area looks to remain on the northern periphery of mid-level ridging through the end of the forecast period, therefore, thinking at least normal to above normal temperatures will remain the norm into early August.

AVIATION. (For the 12Z TAFS through 12Z Monday morning) Issued at 627 AM CDT Sun Jul 25 2021

MVFR/local IFR/LIFR in areas of fog is expected along and east of highway 83 until 14z this morning.

Isolated thunderstorms are possible this morning and this afternoon, generally affecting areas along and south of Interstate 80. Otherwise, VFR is expected across wrn and ncntl Nebraska today and tonight. There is a chance fog will return across parts of wrn and ncntl Nebraska early Monday morning.

LBF WATCHES/WARNINGS/ADVISORIES. None.

SHORT TERM . NMJ LONG TERM . NMJ AVIATION . CDC


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Valentine, Miller Field, NE13 mi71 minS 13 G 2010.00 miFair84°F66°F55%1015.3 hPa
Ainsworth Regional Airport, NE22 mi68 minS 1010.00 miFair77°F67°F71%1019 hPa

Link to 5 minute data for KVTN

Wind History from VTN (wind in knots)
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Last 24hrNE9NE11NE9N3--4E4SE5CalmSE7SE6CalmS5SW6SW8S7SW3CalmS3S4CalmS5S13
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1 day agoW453S7SW3CalmNW5SE4CalmW12NE9NE5CalmW4SW4NW5NW8NW7W7W6W3NW5N10
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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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