Marine Weather and Tides
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 7:47AM||Sunset 5:35PM||Saturday January 16, 2021 3:33 AM EST (08:33 UTC)||Moonrise 10:23AM||Moonset 9:24PM||Illumination 9%|
7 Day Forecast for Marine Location Near Highland Holiday, OHHourly EDIT Help
Area Discussion for - Wilmington, OH  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS61 KILN 160810 AFDILN
AREA FORECAST DISCUSSION National Weather Service Wilmington OH 310 AM EST Sat Jan 16 2021
SYNOPSIS. An upper level low will continue to move east across the Ohio Valley today. Additional energy rotating on the back side of the departing low will affect the area tonight. Another upper level low is forecast to move east through the area Sunday into Sunday night. Weak high pressure is then expected to build into the Ohio Valley by Monday.
NEAR TERM /UNTIL 6 PM THIS EVENING/. The center of a fairly large mid level circulation will move east across the forecast area today. An embedded disturbance moving through the southern side of the low across Kentucky will provide for continuing chances of snow showers this morning, highest of course along and south of the Ohio River. Only light accumulations are expected, but these could cause a few slick spots through sunrise. Will highlight that potential in an updated Special Weather Statement.
As the mid level circulation departs to the east this afternoon, additional energy rotating on the back side of the low will move southeast into the western CWFA by late this afternoon, then east across the remainder of the forecast area this evening. This energy is associated with a low level trough axis. In addition, some weak isentropic lift in the low to mid levels has been noted on several models. SPC HREF suggests that a period of light snow will be possible late this afternoon into this evening. This snow may be the type that produces small crystals given the lack of strong omega in the favored dendritic growth zone. However, the small flakes would result in reduced visibilities and light accumulations. Highs today will range from the lower to mid 30s.
SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY NIGHT/. Aforementioned light snow will be ongoing this evening, then it will eventually taper off from west to east overnight as a s/wv ridge briefly moves into the area. Snow accumulations will average an inch or less. Lows will be from the upper 20s to around 30 degrees.
On Sunday, another upper level low is poised to move across our region during the afternoon and evening. Dynamic lift with this system will combine with some diurnal instability to produce the likelihood of snow showers. Some of the high resolution models indicate that a few snow showers may be robust/intense which may cause a quick reduction in visibility and a burst of light accumulations. Will highlight this hazard in the HWO. Overall snow accumulations of an inch or so will be possible Sunday afternoon into Sunday evening. Highs on Sunday will range from the lower to mid 30s.
For Sunday night, the mid level energy will move east. With that said, and with diurnal cooling, scattered snow showers in the evening will taper off from west to east. Lows will fall into the mid and upper 20s.
LONG TERM /MONDAY THROUGH FRIDAY/. Longwave trough persists Monday over eastern Canada and stretches into the Ohio Valley with a shortwave exiting to the east. Snow shower activity should be diminished by Monday morning but the forecast area remains in northwest flow which means there could be some lingering flurries. At the surface, high pressure noses in from the south during the afternoon with anticyclonic flow supporting westerly winds. High temperatures will be near seasonal normals with low to mid 30s area wide. Elevated winds between 10-15 mph will have conditions feeling a little cooler throughout the day, especially with the mostly cloudy skies.
Warm air advection increases Monday night as the atmosphere responds to a shortwave trough and weak frontal boundary moving eastward into the Ohio Valley. The weak isentropic lift and warm air advection results in the potential for light precipitation chances in the form of light rain or snow Tuesday. Some deterministic models suggest the area may stay dry, but until ensemble support lessens, this potential will remain in the forecast. Precipitation type is expected to be primarily snow but rain may mix in along the Ohio River as temperatures push into the upper 30s and lower 40s.
As the precipitation slides to the east Tuesday night, mid- level ridge builds from the Great Lakes down to the Gulf Coast. This favors a dry Wednesday with surface high pressure nosing in from the south once again. Even with the high pressure, there is no substantial change in surface airmass so temperatures remain persistent, near or slightly above normal. Wednesday night, the ridge slides off to the east as two features support the next chance for precipitation. A trough moving into the northern Great Lakes results in cyclogenesis in southern Canada. A cold front, as indicated by a weak pressure trough, moves through the area Thursday. While the front stretches southward into the region, the primary moisture and lift source is associated with a weak shortwave ejecting eastward from the central US. This places the highest chances for precipitation across southern locations. Precipitation type will be tricky initially, as colder air will be in place ahead of the overrunning precip shield. Expectations are that light snow will be the main precip type before warmer air moves in nudges northward during the afternoon, causing snow to turn to rain. Weaker warm air advection would lead to light accumulations of snow before precipitation moves east Thursday night.
For Friday, the region remains stuck in strong westerly flow aloft with what was a cut-off low over the southwestern US now ejecting eastward into the central US. There is much that could certainly change over the course of the week but for now, have stuck with a dry forecast. Temperatures are slightly cooler than Thursday due to weak cold air advection.
AVIATION /08Z SATURDAY THROUGH WEDNESDAY/. The center of a large mid level low pressure system will traverse east across the Ohio Valley into the first part of the day. Embedded energy rotating through the low will bring the chance of snow showers to the terminals with a decreasing trend expected from west to east between 15Z and 18Z. Ceilings will gradually lower in the MVFR category overnight with some pockets of IFR possible. Visibilities will also lower in the MVFR category with pockets of IFR possible in more robust snow showers.
For this afternoon into this evening, as the convective precipitation with the mid level low shifts east, a trough of low pressure will be approaching our western CWFA from the northwest. This feature is expected to spread light snow into the region from west to east late this afternoon into this evening. Conditions in light snow will drop into at least the IFR category. In addition, winds will increase from the west with gusts up to 20 knots possible.
For the later overnight period, snow will taper off from west to east overnight. However, IFR ceilings are expected to persist.
OUTLOOK . MVFR/IFR ceilings and visibilities possible Sunday into Sunday night, especially with snow showers. MVFR ceilings possible Monday and Tuesday.
ILN WATCHES/WARNINGS/ADVISORIES. OH . None. KY . None. IN . None.
SYNOPSIS . Hickman NEAR TERM . Hickman SHORT TERM . Hickman LONG TERM . McGinnis AVIATION . Hickman
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|Wilmington, Airborne Airpark Airport, OH||24 mi||39 min||SSW 5||5.00 mi||Light Snow Fog/Mist||31°F||28°F||89%||1004.2 hPa|
Link to 5 minute data for KILN
Wind History from ILN (wind in knots)
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