Monday, May20, 2019 L-36.com


Marine Weather and Tides
Rochester, NH

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.

Sunrise 5:13AMSunset 8:07PM Monday May 20, 2019 5:03 PM EDT (21:03 UTC) Moonrise 10:05PMMoonset 6:41AM Illumination 97% Phase: Waning Gibbous; Moon at 17 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
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ANZ154 Coastal Waters From Cape Elizabeth, Me To Merrimack River, Ma Out 25 Nm- 339 Pm Edt Mon May 20 2019
.small craft advisory in effect from Tuesday morning through Wednesday morning...
Tonight..SW winds 5 to 15 kt, becoming W 10 to 15 kt after midnight. Gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers with a slight chance of tstms this evening. Some tstms may produce damaging winds and small hail this evening.
Tue..W winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft.
Tue night..NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft.
Wed..N winds 10 to 20 kt with gusts up to 30 kt, diminishing to 5 to 10 kt in the afternoon. Seas 2 to 3 ft.
Wed night..S winds 5 to 10 kt, becoming sw after midnight. Seas 1 foot or less.
Thu..SW winds 5 to 10 kt, becoming S 10 to 15 kt in the afternoon. Seas 2 to 3 ft.
Thu night..S winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.
Fri..E winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 7 ft. A chance of showers.
Fri night..SE winds 5 to 10 kt. Seas 4 to 6 ft.
Sat..S winds 5 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. A chance of showers.
Sat night..SW winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers. Winds and seas higher in and near tstms.
ANZ100 339 Pm Edt Mon May 20 2019
Synopsis for stonington me to merrimack river ma out to 25 nm.. A cold front crosses the gulf of maine tonight with gusty northwest winds on Tuesday. Winds diminish Tuesday night and Wednesday as high pressure builds in from the west. &&


7 Day Forecast for Marine Location Near Rochester, NH
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location: 43.24, -71.1     debug


Area Discussion for - Gray/Portland, ME
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Fxus61 kgyx 202006
afdgyx
area forecast discussion
national weather service gray me
406 pm edt Mon may 20 2019

Synopsis
A cold front crosses the region this evening, bringing cooler
and drier air to new hampshire and western maine for midweek.

Another area of low pressure crosses the region Thursday night
into early Friday. It will be seasonably mild, but unsettled
through the weekend.

Near term tonight
Low pressure moving tracking near the saint lawrence valley is
sending a cold front eastward across new england. Ahead of it, a
warm and humid air mass is in place. This has led to some
moderate instability and a few isolated to scattered showers and
a few thunderstorms. Overall wind flow environment still favors
storm organization, although the limiting factor is instability.

It remains possible for storms to strengthen and produce
damaging winds and small hail through this evening along and
ahead of the front. Will continue to monitor the severe weather
threat through the evening and update watch 198 as appropriate.

Expect the cold front to shut activity off as it moves through
and reaches the coast by early evening. Winds shift to the west
with drier air moving in behind it. Lows tonight should reach
the 40s to upper 50s.

Short term Tuesday and Tuesday night
West northwest winds become strong and gusty on Tuesday as cold
advection combines with a strong pressure gradient. The
combination of strong winds aloft, good mixing in cold
advection, and downsloping conditions on the coastal plain will
allow the stronger winds to reach the ground level. Currently
expect gusts to be just below advisory levels... Topping off in
the 30 to 40 mph range with a few gusts to 45 mph possible.

Temperatures on Tuesday will reflect the northwest flow pattern
with cooler conditions up north and the warmest conditions in
the south and coast. Winds die down a bit Tuesday night as high
pressure builds in from the west. Most of the area falls into
the 40s. Temperatures in northern valleys may approach the mid
30s, but expect winds will remain strong enough to prevent
dropping to freezing or for frost to form. However, this will
need to be monitored.

Long term Wednesday through Monday
500 mb continues to show blocking pattern over ERN canada and n
atlantic thru the long range, but ridge development over srn
conus will push the coldest air poleward, and this should help
moderate temps closer to normal in the extended, despite
continued unsettled conditions, as troughs continue to affect
nrn new england.

Sfc high pressure squeezes in from the south for Wed into thu,
and for the most part those days look dry. Warm air starts to
move back in by Wed and highs will mostly be in the 60s, with
partly to mostly sunny skies. Wed night will be calm and nearly
clear so lows will drop off to around 40 in the north to the
mid to upper 40s in the south. Thu will feature increasing
clouds as the next system approaches, and highs in the mid 60s
to low 70s.

Fast moving 500 mb wave moves across the CWA Thu night, and
resembles a ridge rider type mcs, although expect CWA to be on
the cools side and end up with just some rain which will mainly
be confined to the overnight. A more significant trough passes
to our N around Saturday and will drag a cold front across the
region Saturday , which provides an other chance of showers.

Another wave follows quickly for Sunday or Monday. Temps thru
the period will run close to normal.

Aviation 20z Monday through Saturday
Short term... A cold front moves through today with a few showers
and strong storms possible ahead of the front. However, coverage
is too low to keep mention of thunder in any TAF at the moment.

Should see winds shifting to the west and clearing conditions
through the night. Winds on Tuesday will gust to 30 to 35 kt out
of the northwest before diminishing a bit Tuesday night.

Long term... MVFR-ifr possible in shra Thu night, with some
showers briefly producing flight restrictions on sat.

Marine
Short term... Southwest winds shift to west this evening behind a
cold front. Expect stronger northwest winds beginning on Tuesday
and gradually diminishing Tuesday night. Small craft advisory
has been issued for Tuesday. It's possible a few gusts to 35kt
could occur near the immediate coastline.

Long term... Generally quiet on the waters with sub-sca
conditions through Friday.

Gyx watches warnings advisories
Me... None.

Nh... None.

Marine... Small craft advisory from 7 am Tuesday to midnight edt Tuesday
night for anz151-153.

Small craft advisory from 7 am Tuesday to noon edt Wednesday
for anz150-152-154.

Near term... Kimble
short term... Kimble
long term... Cempa


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BGXN3 - Great Bay Reserve, NH 19 mi79 min WSW 7 77°F 1005 hPa63°F
WEXM1 - Wells Reserve, ME 30 mi64 min S 6 62°F 57°F
IOSN3 - Isle of Shoals, NH 32 mi64 min SSW 6 G 7 69°F 1003.1 hPa (-2.1)60°F
44030 - Buoy B0102 - Western Maine Shelf 36 mi60 min S 14 G 16 55°F 49°F3 ft1002.3 hPa

Wind History for Wells, ME
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Rochester - Skyhaven Airport, NH10 mi73 minVar 5 G 1910.00 miOvercast81°F59°F47%1002.7 hPa
Pease Air Force Base / Portsmouth, NH18 mi68 minSW 10 G 1710.00 miMostly Cloudy78°F61°F57%1002.9 hPa
Concord Municipal Airport, NH21 mi73 minSW 12 G 2010.00 miA Few Clouds82°F60°F47%1003.3 hPa
Sanford, Sanford Regional Airport, ME24 mi68 minWSW 10 G 1610.00 miMostly Cloudy82°F62°F51%1003 hPa

Wind History from DAW (wind in knots)
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Last 24hrS6SE4CalmCalmNE4CalmN3SE3E4S4CalmCalmCalmCalmCalmS3Calm4Calm5545
G19
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1 day agoSE5SE6E3S4CalmCalmCalmCalmNW3CalmSE6S3CalmSE43CalmCalm555--S8S76
2 days agoSE6S4SE3S3CalmN4CalmCalm3NW14
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Tide / Current Tables for Salmon Falls River entrance, Piscataqua River, New Hampshire
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Salmon Falls River entrance
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Mon -- 02:08 AM EDT     8.26 feet High Tide
Mon -- 05:14 AM EDT     Sunrise
Mon -- 06:40 AM EDT     Moonset
Mon -- 08:48 AM EDT     -0.78 feet Low Tide
Mon -- 02:46 PM EDT     7.35 feet High Tide
Mon -- 08:05 PM EDT     Sunset
Mon -- 08:57 PM EDT     0.22 feet Low Tide
Mon -- 10:03 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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67.68.37.96.74.82.60.7-0.5-0.801.83.95.97.17.36.75.33.51.80.60.20.82.3

Tide / Current Tables for Portsmouth Harbor Entrance, New Hampshire Current
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Portsmouth Harbor Entrance
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Mon -- 02:19 AM EDT     -0.00 knots Slack
Mon -- 05:12 AM EDT     -2.25 knots Max Ebb
Mon -- 05:14 AM EDT     Sunrise
Mon -- 06:40 AM EDT     Moonset
Mon -- 09:03 AM EDT     0.00 knots Slack
Mon -- 11:03 AM EDT     1.24 knots Max Flood
Mon -- 02:48 PM EDT     -0.00 knots Slack
Mon -- 05:27 PM EDT     -1.89 knots Max Ebb
Mon -- 08:04 PM EDT     Sunset
Mon -- 09:09 PM EDT     0.00 knots Slack
Mon -- 10:02 PM EDT     Moonrise
Mon -- 11:15 PM EDT     1.42 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.210.3-0.8-1.8-2.2-2.2-1.8-1.2-0.10.91.21.110.6-0.2-1.2-1.8-1.8-1.6-1.1-0.20.91.4

Weather Map and Satellite Images
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wmap_A
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.
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Wind Forecast for Gray/Portland, ME (17,4,5,8)
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Ground Weather Radar Station Portland, ME
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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.