Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Washington Boro, PA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:37AMSunset 8:39PM Wednesday June 28, 2017 8:22 AM EDT (12:22 UTC) Moonrise 9:47AMMoonset 11:10PM Illumination 20% Phase: Waxing Crescent; Moon at 4 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
    EDIT      (on/off)   Help
ANZ530 Chesapeake Bay North Of Pooles Island- 731 Am Edt Wed Jun 28 2017
Today..W winds 5 to 10 kt...becoming sw late. Waves 1 ft.
Tonight..S winds 10 kt. Waves 1 ft.
Thu..S winds 10 to 15 kt with gusts to 20 kt. Waves 1 to 2 ft.
Thu night..S winds 15 to 20 kt. Gusts up to 25 kt in the evening. Waves 2 ft.
Fri..SW winds 10 to 15 kt. Waves 1 ft.
Fri night..S winds 10 to 15 kt. Waves 1 to 2 ft.
Sat..S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms through the night. Showers likely after midnight.
Sun..NW winds around 5 kt. Waves 1 ft. A chance of showers through the day. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 731 Am Edt Wed Jun 28 2017
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure will move over the area today before shifting to bermuda through Thursday. Small craft advisory conditions are possible over portions of the waters Thursday.

7 Day Forecast for Marine Location Near Washington Boro CDP, PA
   Hourly   EDIT   Help
location: 40, -76.49     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 klwx 280754
afdlwx
area forecast discussion
national weather service baltimore md washington dc
354 am edt Wed jun 28 2017

Synopsis
High pressure will build over the area late tonight and
Wednesday before moving offshore Thursday. Warm conditions
will return for the weekend.

Near term today
As of 3am, a 1021mb surface high is centered over west virginia.

Light north wind persists over the lwx CWA at locales that have not
decoupled. Cool with dewpoints around 50f. This is the coolest
morning since june 9, about 10 degrees below normal for inland
locales.

The high pressure center drifts east across south-central virginia
this morning and off the coast at the mouth of the chesapeake bay
(guidance has been very consistent with this departure point over
the past few days) around midday. A return southerly flow will
overspread the area this afternoon with 850mb temps increasing from
7c to 13c in the wake. This makes for a difficult temperature
forecast, expect generally low 80s. Mid 80s are possible for areas
where 850 temps rise into the teens by mid-afternoon.

Southerly flow keeps min temps about 10 degrees higher for inland
locales tonight, or near normal.

Short term tonight through Friday night
Return to summerlike conditions Thursday into this weekend as a
bermuda high sets up. 850mb temps in the upper teens both Thursday
and Friday will allow MAX temps into the low 90s with dewpoints
rising into the low 60s Thursday and mid 60s Friday. Heat indices
rise to the mid 90s Friday.

Expect dry conditions through Thursday due to lack of moisture.

Terrain driven convective thunderstorms can be expected Friday
thanks to an increase in moisture from the continued southerly
flow.

Long term Saturday through Tuesday
Earlier in the week there were more questions about when the
best chance for rain would be this weekend - it has become
clearer that the best chance will be Saturday night early
Sunday as upper trough cold front track across the northeastern
us. Precipitation chances will decrease Sunday afternoon.

Highs around 90. Lows in the low 70s east of the mountains mid
to upper 60s west.

Monday is looking dry as east coast is in between shortwaves.

Highs again right around climo norms for early july.

The 4th. Temperatures area still looking to be around climo
norms - no excessive heat but highs around 90 for many locales.

The next shortwave boundary appears be positioned to the
northwest of the area Tuesday morning, and approaching the
mason-dixon line Tuesday evening. This will serve as a
potantial trigger focus for convection so have chance of
thunderstorms in the 4th forecast.

Aviation 07z Wednesday through Sunday
Vfr prevails through the week as high pressure drifts across the
area today and to bermuda through Thursday night. North winds this
morning become southerly this afternoon and persist into this
weekend. Summerlike conditions return Thursday.

Thunderstorms in the terrain west of the dc metros Friday due to
increased temperature and moisture.

This weekend - majority of the time should seeVFR conditions at
all TAF sites. Chances of thunderstorms will be possible late
Saturday afternoon into Saturday night.

Marine
Surface high pressure drifts off the mouth of the bay early this
afternoon. Northerly flow gusting to 20 knots over southern md
waters will diminish through the mid morning. South winds begin late
this afternoon with southerly channeling into marginal small
craft advisory range at times tonight through Friday night.

Gusts may reach SCA values late Saturday into Sunday morning.

Isolated thunderstorms will be possible during this time as
well.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... Small craft advisory from 9 pm this evening to 6 am edt
Thursday for anz530>534-536>543.

Small craft advisory until 8 am edt this morning for anz534-
537-543.

Small craft advisory until 6 am edt early this morning for
anz532-533-540-541.

Products Baj woody!


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
44057 - Susquehanna, MD 39 mi42 min NNW 5.8 G 7.8 65°F 1021 hPa
CHCM2 - 8573927 - Chesapeake City, MD 49 mi52 min WNW 1.9 G 4.1 63°F 80°F1021.3 hPa
BLTM2 - 8574680 - Baltimore, MD 51 mi52 min NNE 4.1 G 6 67°F 77°F1020.8 hPa
FSKM2 - 8574728 - Francis Scott Key Bridge, MD 54 mi52 min NW 5.1 G 6 67°F 1021 hPa

Wind History for Chesapeake City, MD
(wind in knots)    EDIT      (on/off)   Help
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
Last
24hr
S3
E3
W2
W5
SW5
G8
SW5
G12
SW9
G13
SW8
G12
S5
G13
SW4
G11
SW5
G9
SW5
SW3
W5
W2
W5
SW2
G5
SW1
S2
SW2
S1
SE2
S3
S1
1 day
ago
W3
SW3
W8
W6
G10
SW8
G14
W10
G14
W5
G10
S2
G8
S6
G13
S5
G8
SW3
G7
S3
E1
SE1
E2
--
E1
SE3
NW7
G12
N4
E1
NW3
NW3
W4
2 days
ago
--
W4
W2
SE1
G4
SW2
G7
SW6
G10
SW3
G8
W8
G13
S7
G11
SW6
G11
SW5
G10
SW6
G9
SW4
G9
SW4
G8
W5
G10
SW4
SW3
SW2
SW3
SW2
W2
G5
--
E2
E4

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lancaster, Lancaster Airport, PA13 mi29 minW 510.00 miFair62°F54°F75%1021.1 hPa
York, York Airport, PA21 mi29 minW 410.00 miFair61°F54°F78%1021.9 hPa
Harrisburg, Harrisburg International Airport, PA21 mi26 minNW 510.00 miFair62°F51°F67%1021.3 hPa

Wind History from LNS (wind in knots)
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
Last 24hrCalm4W9W10
G16
W9
G19
W16
G23
W16W12
G17
W16NW13NW13NW10NW11NW9NW7W7W5W5W3W3W3W5W3W5
1 day agoNW8W9W63W7W9W12
G16
W9SW8W11S10SW5S4S4W8SE4NW7E3------W3W5W8
2 days agoW8NW3NW5NW5W8
G16
W10W11--W11
G19
W17
G21
W8W12W9W7W5W6CalmW3W4------CalmW5

Tide / Current Tables for Port Deposit, Susquehanna River, Maryland
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Port Deposit
Click for Map
Wed -- 02:35 AM EDT     2.75 feet High Tide
Wed -- 05:39 AM EDT     Sunrise
Wed -- 09:34 AM EDT     0.82 feet Low Tide
Wed -- 10:45 AM EDT     Moonrise
Wed -- 02:53 PM EDT     3.50 feet High Tide
Wed -- 08:36 PM EDT     Sunset
Wed -- 10:54 PM EDT     0.67 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.42.22.72.72.52.21.81.410.90.91.21.92.73.33.53.332.521.51.10.80.7

Tide / Current Tables for Havre de Grace, Susquehanna River, Maryland
   EDIT      (on/off)   Help   One Week of Data
Havre de Grace
Click for Map
Wed -- 01:49 AM EDT     2.15 feet High Tide
Wed -- 05:39 AM EDT     Sunrise
Wed -- 08:03 AM EDT     0.36 feet Low Tide
Wed -- 10:45 AM EDT     Moonrise
Wed -- 01:49 PM EDT     2.63 feet High Tide
Wed -- 08:35 PM EDT     Sunset
Wed -- 09:02 PM EDT     0.20 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.72.12.121.71.30.90.50.40.50.91.62.12.52.62.52.11.71.20.70.40.20.30.8

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Mid-Atlantic    EDIT
Geos

Wind Forecast for Baltimore, MD/Washington (8,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Dover AFB, DE
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.