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Marine Weather and Tides Blades, DE 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.

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Sunrise 6:46AM

Sunset 7:05PM

Sunday September 19, 2021 9:32 AM EDT (13:32 UTC)

Moonrise 5:53PM

Moonset 4:06AM

Illumination 96%

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 Blades, DE

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Area Discussion for - Philadelphia/Mount Holly, PA

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FXUS61 KPHI 191029 AFDPHI

Area Forecast Discussion National Weather Service Mount Holly NJ 629 AM EDT Sun Sep 19 2021

SYNOPSIS. High pressure builds over eastern Canada and the Northeast later today and tonight, then moves into the Gulf of Maine on Monday. High pressure remains over the western Atlantic through the end of next week. A frontal boundary approaches for the middle of the week, and slowly crosses the region at the end of the work week. Another front may pass through next weekend.

NEAR TERM /THROUGH TONIGHT/. In the wake of the cold front earlier, and with both a surface ridge a mid level ridge building starting to build over our region, expect tranquil and seasonable conditions through tonight. Temperatures today will be 5 to 10 degrees lower than Saturday's highs, with highs mostly in the 70s (though a few places could be near 80 F).

Winds will be gradually shifting from northerly to easterly, primarily late in the day into tonight. With onshore flow, risk for fog and/or low stratus increases. However, the risk for fog appears rather low tonight as the most likely areas to get close to saturation (SE NJ and northern Delmarva) should have winds stay up near 5 kt. Across NW NJ and E Central PA, where winds will be lighter, dew points should also be lower. Thus, for now I don't have a mention of fog in the forecast. As for low stratus clouds, that is possible, but given how late the onshore flow develops, it is unlikely that we will see widespread low clouds.

SHORT TERM /MONDAY THROUGH TUESDAY/. High pressure will move into the Gulf of Maine on Monday and remains there through Tuesday. Onshore flow sets up across the region, and low level moisture will gradually increase across the region. Surface dew points will start out in the 50s on Monday, gradually rising through the 60s once again on Tuesday.

Plenty of sunshine and seasonal conditions expected on Monday with highs generally in the 70s. With increasing low level moisture, patchy fog possible late Monday night. On Tuesday, high temperatures will once again be in the 70s, but with increasing clouds as a frontal boundary approaches from the west.

LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/. Surface cold front with a deep upper trough dig through the central U.S., but with high pressure anchored offshore, the front looks to slow down over the eastern Great Lakes and Ohio Valley Tuesday night.

A period of unsettled weather is on tap for the midweek period, however, there is a good deal of uncertainty with specifics given the differences among the models.

A closed H5 low will pinch off of the upper trough over the great Lakes and Ohio Valley late Wednesday. The first wave of showers will approach the region Wednesday and Wednesday night. The issue over the following couple of days is that the 00Z/19 GFS, ECMWF, and Canadian all have different solutions regarding the timing and placement of the upper low. Overall, a period of showers is likely Wednesday night through Thursday, but showers may continue Thursday night and if the slower models pan out. Another concern is convection. Models indicating minimal MUCAPE, with the 00Z ECMWF on the more robust side, but still only around 600 J/kg. Given that surface dew points will be well in the 60s, possibly approaching 70, there is enough moisture available. The concern is that all of the ingredients might not come together. ECMWF indicating 80-100 kt jet, but the jet stays north of the region. GFS indicates this jet, but it is more over the Northeast, and is producing a period of heavy rain right over western and central New York and central and eastern Pennsylvania Wednesday night, then over New Jersey Thursday morning. The Canadian brings this rain which could be heavy to the region late Thursday and Thursday night. The ECMWF is not as progressive with that heavy rain, but is slower, bringing it Thursday night/Friday morning.

Feel best course of action is to cap PoPs at chance on Wednesday, then carry likely PoPs Wednesday night and Thursday. Will also add a chance for thunder Thursday afternoon, but it remains uncertain.

Cold front passes through the region by Friday morning, unless the ECMWF is correct, and in that case, it will not be until late Friday. Conditions dry out sometime Friday and Saturday as high pressure builds in from the north.

AVIATION /12Z SUNDAY THROUGH THURSDAY/. The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas.

Today . VFR conditions expected. Winds should primarily be northerly at 5 to 10 kt. Especially this morning, the direction could vary between 330 and 030 degrees. After 18Z, expect a slight veering to more northeasterly, especially at MIV/ACY. Moderate confidence with winds; high confidence of VFR.

Tonight . Starting VFR, and should generally stay VFR through the night. Some low clouds (with potential MVFR ceilings) are possible after 06Z, primarily at KMIV, KACY, KPHL, and KILG. Winds will settle out of the east or northeast with speeds generally 5 kt or less. Moderate confidence on the overall pattern, but low confidence on the potential for MVFR ceilings.

Outlook .

Monday . VFR. E-SE winds 5-10 kt, except 10-15 kt at KACY. High confidence.

Monday night . VFR initially, then sub-VFR in fog/stratus. E winds 5 kt or less. Moderate confidence.

Tuesday . VFR. SE winds 5-10 kt. Moderate confidence.

Tuesday night . VFR initially, then sub-VFR possible in fog/stratus. E winds 5 kt or less. Moderate confidence.

Wednesday through Wednesday night . Overall, VFR, but scattered SHRA possible in the afternoon, then becoming likely Wednesday night with sub-VFR conditions. SE winds 10-15 kt, with gusts to 20 kt in the afternoon. Low confidence.

Thursday . SHRA likely with sub-VFR conditions. TSRA possible in the afternoon. SE winds 10-20 kt. Low confidence.

MARINE. Winds and seas should stay below Small Craft Advisory criteria through tonight. Some guidance shows seas on the NJ coastal waters getting to 5 feet this afternoon. However, that guidance is too high with current conditions, so expect that bias to continue and thus think seas should stay just below SCA criteria.

Outlook .

Tuesday-Thursday . Although winds should remain below advisory levels through the period, seas could increase to 5 feet or higher by Tuesday night and continue into Thursday.

Rip currents .

The combination of lingering swells from Odette, with developing onshore flow later today, and the full moon on Monday will result in a moderate risk for rip currents today and Monday. Although the swells should start to diminish, this tendency will be offset by the increasing onshore flow.

TIDES/COASTAL FLOODING. Spotty minor tidal flooding is possible centered around the highest astronomical tides through Monday. The combination of increased swells from Odette, higher astronomical tides with the full moon on Monday, and developing onshore flow will all contribute to this. The highest astronomical tides, and thus the higher risk for spotty minor flooding, will be the evening/overnight high tides. At this point, tidal levels just should fall just shy of advisory criteria. However, if the onshore flow develops faster than what is currently expected, there could be an increased risk for widespread minor flooding, especially with the evening/night high tide tonight.

Notably, forecasts have increased slightly for portions of the Atlantic coast in southern New Jersey and Delaware for the evening/night high tide tonight, and there is a chance an advisory may be required for these areas as well as adjacent portions of Delaware Bay during this time frame.

PHI WATCHES/WARNINGS/ADVISORIES. PA . None. NJ . None. DE . None. MD . None. MARINE . None.

Synopsis . MPS Near Term . Johnson Short Term . MPS Long Term . MPS Aviation . Johnson/MPS Marine . Johnson/MPS Tides/Coastal Flooding . WFO PHI

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
CA2 - 8571892 - Cambridge, MD	26 mi	45 min	N 5.1 G 7	72°F	78°F		1021 hPa
LWSD1 - 8557380 - Lewes, DE	27 mi	45 min	N 13 G 15	72°F	75°F		1020.7 hPa
DRSD1 - Delaware Reserve, DE	33 mi	63 min	N 6	69°F			1021 hPa	68°F
OCIM2 - 8570283 - Ocean City Inlet, MD	34 mi	45 min	NNE 11 G 15	73°F	74°F		1021.3 hPa
BRND1 - 8555889 - Brandywine Shoal Light, DE	35 mi	51 min	N 20 G 22				1021 hPa
BISM2 - 8571421 - Bishops Head, MD	37 mi	51 min	NNE 8.9 G 14	74°F	78°F		1020.7 hPa
CMAN4 - 8536110 - Cape May, NJ	41 mi	45 min	N 7 G 14	71°F	74°F		1020.4 hPa
44062 - Gooses Reef, MD	44 mi	39 min	NNE 14 G 19	73°F	78°F	1 ft	1022.2 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD	45 mi	45 min	N 12 G 14	73°F			1021 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ	48 mi	45 min	N 12 G 15	69°F	76°F		1022 hPa
CPVM2	49 mi	45 min		73°F				62°F
TPLM2 - Thomas Point, MD	49 mi	33 min	N 15 G 17	72°F	77°F		1022.2 hPa (+1.6)

Wind History for Cambridge, MD

(wind in knots)    EDIT      (on/off)   Help

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N6 G10

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SW2 G5

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NE7 G10

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NE10 G13

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NE5 G8

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Georgetown - Delaware Coastal Airport, DE	13 mi	39 min	N 6	10.00 mi	Fair	73°F	64°F	74%	1020.7 hPa
Salisbury, Salisbury-Ocean City Wicomico County Regional Airport, MD	21 mi	39 min	N 7	10.00 mi	Fair	73°F	66°F	79%	1020.6 hPa
Cambridge-Dorchester Airport, MD	24 mi	38 min	NNE 8	10.00 mi	Fair	73°F	66°F	78%	1021 hPa

Link to 5 minute data for KGED

Wind History from GED (wind in knots)

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N7

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Tide / Current Tables for Sharptown, Nanticoke River, Chesapeake Bay, Maryland

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Tide / Current Tables for Salisbury, Maryland (2 miles below) Current

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Weather Map

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GEOS Local Image of    EDIT
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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