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Marine Weather and Tides Blades, DE Version 3.4

NOTICE 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

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Sunrise 6:17AM

Sunset 7:55PM

Saturday August 17, 2019 8:33 PM EDT (00:33 UTC)

Moonrise 8:22PM

Moonset 7:03AM

Illumination 94%

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 172228 afdphi area forecast discussion national weather service mount holly nj 628 pm edt Sat aug 17 2019 Synopsis A bermuda high will build off the east coast through the remainder of the weekend and into the middle of next week. With the mid- atlantic on its northwest periphery, a warm, humid, and unsettled pattern will develop. A weak upper level disturbance will pass to our north on Sunday. A weak frontal boundary will approach late Monday and stall over the region by Tuesday. A stronger cold front will approach on Thursday and move offshore by Friday. High pressure will build in for the end of the week. Near term until 6 am Sunday morning Radar and surface observations indicate that the sea breeze front has advanced to the delaware river, and the combination sea breeze and delaware bay breeze has encroached into maryland's eastern shore. These breezes will dissipate as the sun sets this evening. Shower thunderstorm activity across the cwa is also waning, but a few widely scattered hit-or-miss showers are still possible this evening, so have reduced chance pops to slight chance in the south and have kept chance pops in the north as remnants from the decaying MCS may still clip this area overnight. Have also tweaked temperatures to match current conditions. Otherwise... Previous forecast is on track. Previous near term discussion below... stationary front remains south of delmarva, and low pressure will ride along this boundary and out to sea. Meanwhile, some mid-level shortwave energy will pass through the region this evening. With a prolonged period with high temperatures of at least 90 degrees expected into the middle of next week, along with a heat index of at least 100 degrees on Monday and Tuesday, this meets the criteria for an excessive heat warning for the urban corridor from trenton to philly to wilmington. Will issue an excessive heat watch through Wednesday, and depending on how things develop, future shifts will either convert to a heat advisory or upgrade to an excessive heat warning. Onshore flow continues to usher a warm and humid airmass into the region with surface dewpoints in the upper 60s to low 70s and highs in the 80s to near 90. Surface based CAPE values are quite high, ranging from 2500-3000 j kg north and west of the fall line to 3000- 3500 j kg south towards delmarva. With that weak shortwave energy passing through this region this evening, showers and thunderstorms have fired up across portions of eastern pennsylvania and are moving into far western portions of the forecast area. Most of the high-res guidance is indicating little in the way of thunderstorm development, so will carry likely pops early for the western zones, and otherwise chance slight chance. Pwats are over 1.5 inches, and close to 1.75 inches in some areas. In addition, effective shear ranges from 35-40 kt. Some locally heavy rain and gusty winds are possible in the strongest of the storms. With loss of diurnal heating, most activity tapers off fairly quickly after sunset. Quite warm and humid overnight with fog developing once again. Winds take on a more southerly component, and dewpoints will rise towards the mid 70s overnight. The remnants of a decaying MCS are over the southern great lakes and moving into the ohio valley. This should take a track north of the local area, but there is the potential for showers and thunderstorms from this system during the overnight hours, especially for northern zones. Will carry chance pops for the northern zones for the late night hours to cover this potential. Short term 6 am Sunday morning through 6 pm Sunday With a bermuda high in place, and winds shifting to more of a south- southwest flow, the heat and humidity make a return to the region on Sunday. Any lingering showers and thunderstorms will taper off and move out of the region in the morning. Dewpoints climb into the mid 70s through the morning, and then there may be some mixing in the afternoon to knock those dewpoints down a couple of degrees in the afternoon. With highs in the upper 80s to lo 90s, the heat index will at least approach 100 for portions of DELMARVA and the urban corridor. Another decaying mcs, along with some mid-level shortwave energy, with pass north of the region in the afternoon. Another round of showers and thunderstorms are possible, mainly for the northern zones. Long term Sunday night through Saturday Overview... an unsettled pattern looks to take hold for much of the long term period as multiple disturbances pass through a hot and humid air mass along the northwest periphery of the bermuda high and the subtropical ridge. Not expecting any washouts over the next several days, but it looks to be a favorable pattern for a steady dose of opportunities for convection. Hot temperatures will also be a story for the first half of the coming week as southwesterly flow will draw warm and humid air into the region. The heat will peak on Monday and Tuesday but it will remain warm and humid into at least Wednesday. A strong cold front is likely to move through towards Thursday, which should usher in a cooler and much drier air mass towards the end of the week and potentially into next weekend. Dailies... Sunday night-Monday night... There may be some lingering showers or storms early Sunday night, but they should tend to diminish with time. Otherwise, it should be a warm and muggy overnight, potentially with some fog and low cloud concerns as well. A continued southwesterly flow around the periphery of the offshore high pressure will lead to additional WAA on Monday, and temperatures will jump a few degrees from Sunday. Widespread low 90s are likely with some mid 90s possible in the urban corridor. With humidity also remaining elevated, heat index values will likely exceed 100, and either a heat advisory or excessive heat warning will be needed for the urban corridor depending on how exactly the numbers evolve in comparison with criteria. Agree with previous forecaster that Monday looks like it might actually be fairly quiet for precipitation, at least for most of the day and in most of the area. Low pressure will be tracking far to our northwest over ontario, but will drag a weak frontal boundary into our vicinity late in the day. This could lead to a few late afternoon or evening showers and storms especially in northern and western areas. This

activity could continue into the first half of what should be a warm and muggy overnight, but again, expecting coverage to be fairly limited. Tuesday-Wednesday night... Chances for convection increase during the midweek period. A shortwave, which may be convectively enhanced, approaches on Tuesday. The frontal boundary from Monday, while weak and losing definition, will also likely stall overhead. With the shortwave approaching, this should help kick off scattered showers and storms Tuesday afternoon and evening. Shear does not look very impressive, but instability should be fairly strong so some strong to severe storms are possible. Locally heavy rain may also be a concern given the weak wind fields. Guidance also indicates potential for convection to continue well into the night on Tuesday. Wednesday, a cold front will be starting to approach but will remain to our west. However, a pre-frontal trough will likely serve as a trigger for another round of convection on Wednesday. Wind fields, while not extreme, are stronger on Wednesday. Thus the severe weather risk may be greater that day. However, it is possible cloud cover may be more widespread Wednesday, which could limit instability, so it is too early to be confident on severe weather. Hot weather also continues into midweek with Tuesday looking similar to Monday and with Wednesday perhaps slightly cooler due to the additional cloud cover but still warm and humid. Similar to Monday, Tuesday's conditions will necessitate the conversion of the excessive heat watch to either a warning or a heat advisory. With humid air remaining in place, the overnights will continue to be warm and muggy as well with little relief from the daytime heat. Thursday... A more robust trough will be swinging into the great lakes by Wednesday night into Thursday. Ahead of it, a strong cold front will push through our region. Timing of the front is a little unclear, as the latest GFS is considerably faster than the latest ec (not uncommon). Naturally the frontal passage will provide an additional opportunity for convection. The extent of any severe weather threat will likely depend mainly on frontal timing, with the slower ec solution more likely to produce stronger storms since daytime heating would be maximized. In any areas where the front moves through early enough, a drying westerly flow will develop. Ahead of it, such as over delmarva, it will remain warm and muggy. Friday-Saturday... If the current expected timing of features holds up, we should see cooler and drier air for the end of the week as an upper level trough and surface high move overhead behind the front. This should yield a couple of very nice days. Expecting the drier air to probably be short lived as the upcoming pattern looks like it may repeat itself heading into the following week. Aviation 22z Saturday through Thursday The following discussion is for kphl, kpne, kttn, kabe, krdg, kilg, kmiv, kacy and surrounding areas. Tonight... Scattered shra tsra, mainly for krdg kabe and the i-95 corridor terminals, possible into this evening. Brief sub-vfr conditions possible if a storm passes over a given terminal. Will use vcts and tempo groups for those terminals. Low confidence for shra tsra at kmiv kacy. Otherwise,VFR through this evening, then MVFR ifr in fog late tonight. Another round of shra tsra possible late in the overnight hours, mainly for krdg kabe. SE winds less than 10 kt, becoming lgt vrb tonight. Sunday... Morning fog dissipates toVFR conditions. South winds 5-10 kt. Scattered shra tsra possible in the afternoon and evening once again. Outlook... Sunday night... Scattered showers and thunderstorms with associated restrictions are possible for the first half of Sunday night. Patchy fog may develop later Sunday night. Light southerly winds expected. Monday-Monday night... Any lingering fog or low clouds should dissipate early Monday, with conditions turningVFR towards mid- morning and southwest winds around 5 kt. Tuesday-Thursday... Prevailing conditions should beVFR, however, several opportunities will exist for showers and thunderstorms and associated restrictions. Low clouds and patchy fog also possible during the overnight periods. Winds will be generally out of the south or southwest, though may be light and variable on Tuesday and could turn more westerly by Thursday. Marine Conditions remain below small craft advisory levels tonight and Sunday. Areas of fog near the shore are possible again tonight through Sunday morning. Outlook... Sunday night-Tuesday night... Sub-sca conditions expected. Southwest winds around 10 kt. Seas 2 to 3 ft. Wednesday-Thursday... Sub-sca conditions are expected to continue, though winds and seas will increase a bit. Southwest winds gusting near to above 20 kt with seas 3 to 4 ft. Rip currents... there is a moderate risk for the development of dangerous rip currents at the new jersey and delaware beaches through this evening. Phi watches warnings advisories Pa... Excessive heat watch through Wednesday evening for paz070-071- 102-104-106. Nj... Excessive heat watch through Wednesday evening for njz015- 017>019. De... Excessive heat watch through Wednesday evening for dez001. Md... None. Marine... None. Synopsis... O'brien near term... Miketta mps short term... Mps long term... O'brien aviation... Mps o'brien o'hara marine... Miketta mps o'brien

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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	64 min	SSE 8.9 G 12	85°F	83°F		1014.3 hPa
LWSD1 - 8557380 - Lewes, DE	27 mi	64 min	SSE 4.1 G 5.1	80°F	75°F		1014.7 hPa
DRSD1 - Delaware Reserve, DE	33 mi	124 min	SSE 5.1	84°F			1014 hPa	77°F
OCIM2 - 8570283 - Ocean City Inlet, MD	34 mi	64 min	SSW 11 G 13	79°F	79°F		1015.8 hPa
BRND1 - 8555889 - Brandywine Shoal Light, DE	35 mi	94 min					1015.1 hPa (-0.4)
BISM2 - 8571421 - Bishops Head, MD	37 mi	64 min	SSW 11 G 12	84°F	86°F		1015 hPa
CMAN4 - 8536110 - Cape May, NJ	41 mi	64 min	SE 6 G 8	78°F	75°F		1014.2 hPa
44062 - Gooses Reef, MD	44 mi	34 min	S 9.7 G 12	84°F		2 ft	1015.4 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD	45 mi	64 min	SSW 14 G 18	83°F			1015.1 hPa
SJSN4 - 8537121 - Ship John Shoal, NJ	48 mi	64 min	SSE 12 G 13	81°F	84°F		1014.9 hPa
44009 - DELAWARE BAY 26 NM Southeast of Cape May, NJ	49 mi	44 min	S 9.7 G 12	80°F	81°F	3 ft	1014.8 hPa (-0.5)
CPVM2	49 mi	64 min		83°F				82°F
TPLM2 - Thomas Point, MD	49 mi	34 min	S 8.9 G 8.9	83°F	82°F		1015.6 hPa (+0.6)	78°F

Wind History for Cambridge, MD

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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	1.7 hrs	S 5	10.00 mi	Fair	81°F	73°F	79%	1014.7 hPa
Salisbury, Salisbury-Ocean City Wicomico County Regional Airport, MD	21 mi	1.7 hrs	SSE 5	10.00 mi	Fair	83°F	73°F	74%	1014.5 hPa
Cambridge-Dorchester Airport, MD	24 mi	74 min	S 5	10.00 mi	Fair	84°F	73°F	70%	1014.6 hPa

Link to 5 minute data for KGED

Wind History from GED (wind in knots)

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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 and Satellite Images

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GOES Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

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Wind Forecast for Philadelphia/Mount Holly, PA (20,4,5,8)

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Ground Weather Radar Station Dover AFB, DE

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Disclaimer: The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.