Tuesday, August20, 2019 L-36.com


Marine Weather and Tides
Drum Point, MD

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

Sunrise 6:24AMSunset 7:57PM Tuesday August 20, 2019 12:57 PM EDT (16:57 UTC) Moonrise 9:45PMMoonset 9:57AM Illumination 74% Phase: Waning Gibbous; Moon at 20 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
ANZ542 Patuxent River To Broomes Island Md- 1035 Am Edt Tue Aug 20 2019
Rest of today..SE winds 5 kt. Waves less than 1 ft. Scattered showers and tstms this afternoon.
Tonight..SW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms.
Wed..S winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Wed night..SW winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Thu..SW winds 5 kt. Waves less than 1 ft. A chance of showers and tstms.
Thu night..W winds 5 to 10 kt. Waves 1 ft. A chance of showers.
Fri..N winds 5 to 10 kt. Waves 1 ft. A chance of showers and tstms.
Sat..NE winds 5 kt. Waves less than 1 ft. A chance of tstms in the morning. A chance of showers. Winds and waves higher and visibilities lower in and near tstms.
ANZ500 1035 Am Edt Tue Aug 20 2019
Synopsis for the tidal potomac and md portion of the chesapeake bay.. High pressure in the atlantic will promote a light southerly flow over the region into Wednesday. A cold front will approach the waters late Wednesday night into Thursday. High pressure will then settle over the area Friday and dominate into the weekend. Small craft advisories may be required for portions of the waters Wednesday afternoon and Wednesday night.


7 Day Forecast for Marine Location Near Drum Point CDP, MD
   Hourly   EDIT   Help
location: 38.32, -76.45     debug


Area Discussion for - Baltimore, MD/Washington
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 klwx 201343 aaa
afdlwx
area forecast discussion... Updated
national weather service baltimore md washington dc
943 am edt Tue aug 20 2019

Synopsis
A stationary boundary will linger to our north today as an
upper level disturbance tracks overhead. A cold front will
approach the ohio valley Wednesday, sinking into our area
Wednesday night into Thursday. Behind the front, high pressure
will build over the region on Friday and dominate through the
weekend.

Near term through tonight
Another hot and humid day on tap across the area, but not
expecting the record heat that was observed Monday. 925 850mb
temperatures will run a couple degrees cooler today and model
consensus is in favor of highs remaining in the upper 80s to
middle 90s. With dewpoints stubbornly holding in the upper 60s
and low 70s, heat indices will again near or just exceed the
century mark, but remain just below advisory criteria.

The main story today will be another round of scattered strong
to locally severe thunderstorms this afternoon and evening.

Monitoring ongoing MCS and associated shortwave across central
west virginia this morning, and as it moves eastward, some
variation of this will likely serve as the trigger for
additional development this afternoon and evening. Couple this
with increasing instability as CAPE values will easily reach the
2-3k j kg range and steepening low- level lapse rates are
expected once again. Shear will continue to run on the weak side
at less than 20 knots, but there is a slightly stronger
steering flow today than prior days, albeit ~10 knots or so.

Still, storm motion will largely be driven by motion of remnant
mcs in addition to outflow and mesoscale boundary collisions.

Showers and storms are expected to initiate around or shortly
after noon, initially near what will be left of the MCS and the
terrain, then track eastward into the metro areas by this
evening. Some additional development is also possible along
outflow and sea- breeze boundaries. The strongest storms will be
capable of producing damaging wind gusts and large hail, and
this is supported by a marginal risk for severe storms by spc.

Also, given the persistent moist air mass in place and pwats
nearing 2 inches this afternoon, isolated incidents of flooding
is not out of the question in areas of heavy rain.

A downward trend in convection will occur this evening, with
partly cloudy skies and isolated showers lingering overnight. No
discernible change in the airmass yet, so temperatures will
remain on the mild side in the upper 60s to middle 70s.

Short term Wednesday through Thursday night
The primary shortwave axis tracks over the region on Wednesday
as a cold front nears the ohio valley, however plentiful cloud
cover will help inhibit our instability to a degree. Showers and
storms can be expected once again, but coverage and intensity
should be limited given said cloud cover and the tardy arrival
of the front late Wednesday night or early Thursday morning.

Highs Wednesday will be a touch cooler in the upper 80s to low
90s. Thursday, the front will be draped over the region, helping
spark scattered showers and thunderstorms during the afternoon
and evening hours. The front will continue its track southward
Thursday night, but how quickly it exits the area is still in
question. Will advertise a chance of showers and an isolated
thunderstorm Thursday night, but temperatures starting to
retreat into the 60s to near 70 degrees.

Long term Friday through Monday
The heat wave will break by Friday as a cold front slides
southeastward into the region. The ggem and ECMWF shows the
front stalled just to the south for the bulk of Friday, but
close enough to result in a continued chance of showers and
t-storms. The GFS is much more progressive, with the front
clearing far enough south to dry out the region. By Saturday,
the ggem and ECMWF has the front slip further south, with the
chance of precip decreasing from north to south, and by Sunday,
dry air from high pressure to the north prevails on the ecmwf.

The gfs, by comparison, has the front remaining well south with
dry, cooler canadian air dominating through the entire weekend.

By Monday, both the GFS and ECMWF allow easterly flow to start
bringing increased moisture back to the region despite the front
being south of the area and dry high pressure sitting to the
northeast, which could result in low clouds and drizzle. The
ggem, by comparison, generates a more significant low pressure
on the stalled front to the south, with an increased risk of
more significant rain. Regardless of the exact details, all
guidance depicts the dominance of cooler canadian high pressure
through the long term. This means that highs will be much
cooler, with high 70s to low 80s common.

Aviation 14z Tuesday through Saturday
Scattered showers and thunderstorms are expected today, with a
good chance of all terminals seeing brief episodes of subVFR
conditions between 18-00z. Some storms could be strong to
severe, with damaging winds and large hail being the primary
hazards. Patchy fog may result in MVFR ifr vis overnight.

Additional showers and storms can be expected both Wednesday and
Thursday afternoon evening as a frontal boundary moves into the
region. Again, brief episodes of subVFR conditions will be
possible in passing showers storms.

Risk of reduced CIGS and vis will continue Friday as a front
lingers nearby, but decreases Saturday as the front drops
further south.

Marine
Gusty showers and storms likely this afternoon and evening over
the waters, so if planning on being on the waters ensure you
have multiple ways to receive special marine warnings if they
are issued. A light southerly flow is expected today and
tonight, and will begin to increase Wednesday as a cold front
nears to the west. This will likely bring gusts to near sca
threshold late Wednesday afternoon and evening. The
aforementioned front will slowly makes it way south across the
waters late Wednesday night and during the day on Thursday, with
continued chances for gusty showers storms.

Winds may be near SCA levels Friday into Saturday as high
pressure slowly builds in from the north. Risk of thunderstorms
will be highest Friday, decreasing Saturday.

Lwx watches warnings advisories
Dc... None.

Md... None.

Va... None.

Wv... None.

Marine... None.

Synopsis... Bkf
near term... Mm bkf
short term... Bkf
long term... Rcm
aviation... Mm bkf rcm
marine... Mm bkf rcm


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
SLIM2 - 8577330 - Solomons Island, MD 0 mi64 min ENE 4.1 G 5.1 84°F 84°F1018.4 hPa
COVM2 - 8577018 - Cove Point LNG Pier, MD 7 mi64 min NNW 1.9 G 2.9 83°F 1019.4 hPa
PPTM2 - 8578240 - Piney Point, MD 14 mi64 min W 1.9 G 2.9
44062 - Gooses Reef, MD 16 mi46 min NE 5.8 G 5.8 85°F 1019.7 hPa
LWTV2 - 8635750 - Lewisetta, VA 22 mi64 min E 1.9 G 2.9 83°F 84°F1018.9 hPa
BISM2 - 8571421 - Bishops Head, MD 23 mi64 min S 1 G 1.9 85°F 87°F1019.3 hPa
CA2 - 8571892 - Cambridge, MD 27 mi64 min NE 8 G 9.9 87°F 85°F1018.6 hPa
NCDV2 31 mi64 min SE 4.1 G 4.1 87°F 88°F1017.9 hPa
BSLM2 - Chesapeake Bay, MD 35 mi148 min ESE 5.1 88°F 1019 hPa76°F
TPLM2 - Thomas Point, MD 40 mi58 min ENE 6 G 7 86°F 83°F1019.9 hPa (+0.4)69°F
APAM2 - 8575512 - Annapolis, MD 46 mi64 min 88°F 1018.4 hPa
CPVM2 47 mi64 min 85°F 76°F
WASD2 - 8594900 - Washington, DC 49 mi64 min NE 1.9 G 8.9 91°F 84°F1018.7 hPa

Wind History for Solomons Island, MD
(wind in knots)    EDIT      (on/off)   Help
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
9
AM
10
AM
11
AM
12
PM
Last
24hr
SW7
G11
W8
W6
G11
S7
G10
SE15
NE16
G21
S11
G14
SW5
SW11
G16
NW2
G5
S3
NW3
NW3
N1
--
NW2
W1
NW2
NW3
NW2
W2
SE2
SE5
E4
1 day
ago
SE10
SE13
SE12
SE11
SE11
SE9
SE9
SE7
S5
S5
S5
S7
SW5
SW4
S5
S6
S3
S5
S4
S3
G6
S3
S3
SW2
SE2
G5
2 days
ago
E7
E6
E8
SE8
G11
SE11
SE12
S11
S10
S4
G7
S3
SW3
SW6
SW9
SW5
S6
SW6
SW7
SW5
SW2
W3
--
E4
SE7
SE9

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Patuxent River, Naval Air Station, MD3 mi2.1 hrsESE 410.00 miFair87°F73°F65%1018.7 hPa
St Marys County Airport, MD5 mi2.3 hrsNE 310.00 miFair84°F73°F70%1019.3 hPa
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity, MD12 mi2.1 hrsSW 310.00 miFair89°F77°F68%1018.4 hPa

Link to 5 minute data for KNHK

Wind History from NHK (wind in knots)
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
9
AM
10
AM
11
AM
12
PM
Last 24hrSW10W76S7SE9S7S8S5SW13
G19
W8--W4W3N3CalmCalmSW3CalmCalmW4CalmSE4SE4SE6
1 day agoSE10SE9SE11SE11SE8
G16
SE9SE8S5S4S4S4S5S4S3SE3S3CalmCalmS4CalmSW54SE7W7
2 days agoSE6SE7SE9SE11SE11SE10S7S6S3S4CalmSW6S6SW5CalmCalmSW6SW6SW4W3N3SE8SE8SE7

Tide / Current Tables for Solomons Island, Patuxent River, Maryland
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Solomons Island
Click for Map
Tue -- 06:00 AM EDT     1.59 feet High Tide
Tue -- 06:24 AM EDT     Sunrise
Tue -- 10:57 AM EDT     Moonset
Tue -- 12:29 PM EDT     0.49 feet Low Tide
Tue -- 06:20 PM EDT     1.56 feet High Tide
Tue -- 07:53 PM EDT     Sunset
Tue -- 10:44 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
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
0.50.60.81.11.41.51.61.51.31.10.80.60.50.50.711.21.51.61.51.41.10.90.7

Tide / Current Tables for Point Patience, 0.1 mile southwest of, Maryland Current
   EDIT      (on/off)   Help   One Week of Data
Point Patience
Click for MapFlood direction 315 true
Ebb direction 145 true

Tue -- 01:13 AM EDT     0.00 knots Slack
Tue -- 03:06 AM EDT     0.37 knots Max Flood
Tue -- 05:25 AM EDT     -0.00 knots Slack
Tue -- 06:24 AM EDT     Sunrise
Tue -- 09:26 AM EDT     -0.75 knots Max Ebb
Tue -- 10:57 AM EDT     Moonset
Tue -- 01:30 PM EDT     0.00 knots Slack
Tue -- 03:41 PM EDT     0.47 knots Max Flood
Tue -- 06:30 PM EDT     -0.00 knots Slack
Tue -- 07:53 PM EDT     Sunset
Tue -- 10:11 PM EDT     -0.61 knots Max Ebb
Tue -- 10:44 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
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
-0.3-0.10.20.40.30.1-0.2-0.4-0.6-0.7-0.7-0.6-0.4-0.10.20.40.50.30.1-0.1-0.4-0.5-0.6-0.6

Weather Map and Satellite Images
       (on/off)   Help
Wind Forecast for Baltimore, MD/Washington (12,3,4,5)
      (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.