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Marine Weather and Tides Kemps Mill, MD Version 3.4

What's New / NOTES 10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

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Sunrise 5:50AM

Sunset 8:24PM

Monday May 20, 2019 4:37 PM EDT (20:37 UTC)

Moonrise 9:22PM

Moonset 6:20AM

Illumination 97%

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 Kemps Mill, MD

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Area Discussion for - Baltimore, MD/Washington

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Fxus61 klwx 201848 afdlwx area forecast discussion national weather service baltimore md washington dc 248 pm edt Mon may 20 2019 Synopsis A cold front will cross the area later this afternoon and early evening. Canadian high pressure will dominate in its wake through the middle portion of the work week. This high will shift offshore Wednesday night as a frontal boundary lingers near the mid atlantic to finish out the week. Near term through tonight A cold front extends from northeast maryland, across far northern virginia, and into east-central parts of west virginia. Along and ahead of the front, towering cumulus and a couple of showers are developing in the virginia piedmont and northeast virginia. Additional showers and a few thunderstorms are expected to develop over the next two to three hours. The eastern one-third of our CWA is in a marginal risk for severe thunderstorms, especially along and southeast of i-95. Temperatures have risen into the middle to upper 80s in most areas. Once we get beyond 6pm, shower and thunderstorms should cease, except for far southern maryland. Temperatures will become cooler tonight into the 50s as drier air comes in from the northwest. Short term Tuesday through Wednesday night High pressure will build down of the mid atlantic from the great lakes Tuesday through Wednesday. Gusty northwest winds on Tuesday will yield much cooler temperatures in the low to middle 70s area wide, moderating slightly on Wednesday but still holding in the 70s. The strong and complex system impacting the southern central plains the next couple of days will lift northward into the upper midwest late Wednesday and Wednesday night. This will lift a warm front toward our region Wednesday night as the high shifts off the coast. This will likely bring an increase in cloud cover Wednesday night, as well as increasing shower chances by early Thursday morning, mainly west of the blue ridge. Long term Thursday through Monday Upper level ridging will remain centered over the southeastern united states through at least Saturday. A warm front likely will be north of the area on Thursday. Some diurnal convection will be possible due to increasing warmth and humidity, along with a potential disturbance rounding the ridge and a lee pressure trough. Recent guidance trends suggest a stronger shortwave will drive low pressure into new england Thursday night into Friday, which will send a cold front southward through the area... Another potential focus for precipitation. High pressure will briefly build in Friday night with the upper ridge expanding back north. Temperatures will return to normal as long as we're on the north side of the front. The next low pressure system will be moving through the northern plains, which will eventually force the warm front back northward later in the weekend. As the low moves toward eastern canada, the front will make a push back to the south, though how far it gets will depend on the strength of the ridge. Chance for convection will depend on the positioning of the fronts from Saturday through Monday, thus pops will be kept low at this time.

Aviation 19z Monday through Saturday The mrb terminal is now on the north side of the cold front. The front will be passing through the iad and mtn terminals within another hour, then pass through the bwi and dca terminal within an hour after that and so on.VFR conditions expected, but scattered showers and isolated thunderstorms could yield a brief episode of subVFR conditions at iad dca bwi mtn between 19-21z. Confidence is low in coverage at this time, so will include further detail in the TAF as timing confidence increases. The front will push to the south and east of the terminals this evening, with west northwest winds taking hold overnight. Canadian high pressure will build over the terminals Tuesday through Wednesday, with gusty northwest winds on Tuesday slacking and becoming light through Wednesday night. No threat for precipitation or subVFR conditions Tuesday and Wednesday. Vfr conditions will prevail Thursday through Saturday but brief flight restrictions could be possible as showers and thunderstorms develop along a wavering frontal boundary. Marine A cold front is expected to cross the waters this afternoon and evening. Gusty southwesterly breezes are expected ahead of the front. A SCA remains in effect. A couple of showers storms is expected with the frontal passage, which could require the need for special marine warnings in any stronger storm packing gusty winds. After a bit of a lull in winds in the wake of the frontal passage, the gradient is expected to tighten Tuesday morning, thus SCA conditions expected once again. As high pressure shifts over the region Tuesday night through Wednesday night, light winds will prevail with no threat of gusty showers storms. A warm front will lift north Thursday and return south on Friday as a cold front. If current model projections hold, SCA conditions could occur with northwest winds on Friday. High pressure will bring lighter winds Saturday. Lwx watches warnings advisories Dc... None. Md... None. Va... None. Wv... None. Marine... Small craft advisory until 6 pm edt this evening for anz530>543. Small craft advisory from 2 am to 6 pm edt Tuesday for anz530>543. Synopsis... Klw near term... Klw short term... Klw long term... Ads aviation... Ads klw marine... Ads klw

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
WASD2 - 8594900 - Washington, DC	66 mi	38 min	SW 11 G 17	88°F	70°F		1008.4 hPa (-2.6)
BLTM2 - 8574680 - Baltimore, MD	69 mi	44 min	W 5.1 G 9.9	89°F	72°F		1007.6 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD	73 mi	38 min	WSW 12 G 19	86°F			1007.8 hPa (-2.3)

Wind History for Washington, DC

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

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Hagerstown, Washington County Regional Airport, MD	6 mi	45 min	W 16 G 25	10.00 mi	A Few Clouds	85°F	54°F	35%	1009.8 hPa
Eastern WV Regional Airport/Shepherd Field, WV	18 mi	45 min	W 16 G 22	10.00 mi	Fair	86°F	60°F	42%	1008.4 hPa

Wind History from HGR (wind in knots)

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Tide / Current Tables for Chain Bridge, D.C.

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Tide / Current Tables for Chain Bridge, one mile below, D.C.

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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

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Baltimore, MD/Washington (16,3,4,5)

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Ground Weather Radar Station Sterling, VA

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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.