Monday, May29, 2017 L-36.com


Marine Weather and Tides
Rensselaer, NY

Version 3.4
What's New / NOTES
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 5:19AMSunset 8:26PM Monday May 29, 2017 11:34 PM EDT (03:34 UTC) Moonrise 9:28AMMoonset 12:00AM Illumination 21% Phase: Waxing Crescent; Moon at 5 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
7 Day Forecast for Marine Location Near Rensselaer, NY
   Hourly   EDIT   Help
location: 42.66, -73.74     debug


Area Discussion for - Albany, NY
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus61 kaly 300240
afdaly
area forecast discussion
national weather service albany ny
1040 pm edt Mon may 29 2017

Synopsis
More clouds and showers are likely Tuesday and Wednesday, with
thunderstorms also possible as additional upper level
disturbances move through the region. A dry day is finally in
store Thursday. Temperatures will remain near to below normal.

Near term through Tuesday night
Low level clouds will persist across the area overnight. Temperatures
will not cool much tonight; lows from the mid 40s to mid 50s.

Tuesday, another shortwave is expected to approach in the
afternoon evening. Models suggest some destabilization across
central western nys in the afternoon, with perhaps some
instability developing across the western mohawk valley adirondacks
and eastern catskills schoharie valley if a few breaks in the
clouds develop. There will be increasing 0-6 km bulk shear
potentially exceeding 50 kt, ESP across the southern adirondacks
and mohawk valley by later in the day, so if some convection
migrates into western areas, some gusty winds may occur. In
addition, mlmucapes reach 500-1000 j kg acrs this region Tuesday
afternoon. Latest SPC day 2 outlooks has the region in a
marginal risk for severe wind gusts with convection late Tuesday
afternoon evening, but remains highly conditional on how much
destabilization, from any breaks in the clouds that develop,
late in the day. Current forecast highs are in the upper 50s to
upper 60s.

Tuesday night, remnant convection may still be ongoing across
the region through midnight, especially from the capital region
and points N and w. Convective trends should weaken through the
night, ESP S and E of the capital region where a deeper stable
marine layer may reside. So, gradually decreasing chances for
showers storms through the night, with lows mainly in the upper
40s to mid 50s.

Short term Wednesday
The flow pattern will be dictated by a nearly-stationary upper
low over northern ontario. Upper trough axis extending southward
from the low will swing through on Wednesday, resulting in the
likelihood of another batch of diurnally-enhanced showers and
thunderstorms. Potential for severe weather is intriguing with
fast midlevel flow resulting in deep-layer shear values around
50 kt. The limiting factor will again be instability. However,
there does appear to be a window for partial clearing Wednesday
morning (depending on the departure of any Tuesday night
activity) which would boost surface-based instability values.

Midlevel lapse rates are progged to be solid at around 6.5-7
c km as 500 mb temps drop to near -20c. Model surface dewpoints
from the GFS nam in the upper 50s to low 60s may be a bit
overdone, but even with MOS values in the mid-50s combined with
highs in the 70s in the valleys, could still generate AOA 500
j kg mlcape. Combined with deep-layer shear values, this could
be enough for organized convection. Low wet bulb zero heights
around 7500 feet suggest hail will be a threat with any
organized convection, along with gusty winds. Given uncertainty
with instability, SPC day 3 marginal risk looks good for now.

Wednesday night into Thursday, midlevel flow will become more
northwesterly in the wake of the trough passage as the ontario
upper low elongates in a west-east fashion. Subsidence spreading
across the area looks to finally result in a dry day Thursday,
although somewhat cooler than normal with 850 mb temps dropping
to around 3c. Clouds may increase somewhat late Thursday night
ahead of the next system.

Long term Wednesday night through Monday
The very active pattern continues into early june as a large upper
level trough influences the northeast for the end of the work week
into the first weekend of the month bringing is multiple
precipitation threats and cooler temperatures.

We start the extended period with a cold front dropping out of
southern canada into the northeast on Friday. While uncertainties
exist with the front's arrival time, have put the highest pops in
for the daytime Friday and lingered low chance pops into the
evening, especially for south eastern zones. With WAA out ahead of
the front bringing 850mb isotherms up to 8c - 11c, high temperatures
Friday should reach into the mid 70s for southern areas. Further
north west highs may only reach mid 60s where the front should
arrive earlier in the day. Included slight chance thunder with the
frontal passage as well given the southwesterly flow out ahead of
the front.

This front looks to stall on Saturday with the euro and canadian
showing it stalling in the nyc coastal ct area and a cooler air mass
associated with canadian high pressure building in behind it. The
gfs is the outlier with its solution showing the front stalling much
further north and west well into our cwa. Have edited the forecast
to be in line with the euro canadian solution. The cooler canadian
air mass will lead to below normal temperatures for the first
weekend of june with highs in the upper 60s low 70s Saturday and
even cooler Sunday with most places struggling to rise out of the
60s. There is decent packing of the isobars due to the stalled
boundary in close proximity to incoming high pressure so breezy
conditions can be expected as well.

Uncertainty exist with the precipitation threat for Saturday as most
of the guidance shows a disturbance riding along the stalled
boundary. Just how far north the boundary stalls will determine
which areas receive showers in our cwa, if any. Have left chance
pops for now with highest pops for southern spots to keep in line
with the canadian euro consensus. The uncertainty continues into
Sunday, unfortunately, as the canadian shows the front sliding well
to our south and thus a dry forecast while the euro shows a
disturbance from the ohio valley moving northward into our region.

Left slight chance pops in for now but it is a low confidence
forecast. Increased pops heading into Monday as a potentially potent
disturbance from the midwest should move eastward into the
northeast. There is uncertainty on timing of precipitation as the
canadian shows the upper level shortwave cutting off rapidly in the
midwest and thus a slower arrival time while the euro shows a weaker
shortwave that moves in quicker. Given the time of year, have leaned
closer to the euro's solution of a weaker system and thus only have
chance pops.

Aviation 03z Tuesday through Saturday
Low level clouds are expected to persist across the area overnight
with MVFR conditions lowering to ifr for the overnight. More energy
will rotate about the large upper level low over the great lakes
region with an occluding front on the approach. Expecting widespread
MVFR conditions Tuesday with increasing chances for showers as the
day progresses. There is a chance for thunderstorms in the afternoon
as the airmass is expected to destabilize, however there is not
enough confidence to include thunder in the tafs at this time.

Southerly flow will be light tonight but will increase on Tuesday
to 10 to 15 knots with gusts developing especially at kalb.

Outlook...

Tuesday night: high operational impact. Likely shra... Tsra.

Wednesday: high operational impact. Likely shra... Tsra.

Wednesday night: moderate operational impact. Chance of shra.

Thursday: no operational impact. No sig wx.

Thursday night: slight chance of shra.

Friday: moderate operational impact. Scattered shra... Tsra.

Friday night: low operational impact. Isolated shra.

Saturday: low operational impact. Isolated shra.

Fire weather
A series of upper level disturbances will continue to impact the
region, with showers and thunderstorms likely Tuesday and
Wednesday. Rainfall is not in the forecast for Thursday, but
temperatures will be a bit cooler than normal with rh values
bottoming out mainly in the 40s. Westerly winds gusting to near
20 mph may help to dry things out somewhat.

Hydrology
Steady rainfall continues to exit east, with reports and radar
estimates suggesting 0.25" to up to 1.00" has fallen, with
heaviest amounts over herkimer county. Additional periods of
showers and thunderstorms are likely late tonight into Tuesday.

Rainfall totals are generally expected to remain at a half inch
or below, but locally a half inch to an inch is possible over
the mohawk valley and western adirondacks. Showers and
thunderstorms are likely yet again on Wednesday, with an
additional 0.25-0.75" expected. Widespread flooding is not
expected, although some minor urban, small stream, and poor
drainage flooding cannot be ruled out especially if storms
train over the same area.

For details on specific area rivers and lakes, including
observed and forecast river stages and lake elevations, please
visit the advanced hydrologic prediction service AHPS graphs
on our website.

Equipment
The ASOS at the pittsfield municipal airport, ma continues to
experience outages with hourly metars occasionally or
continuously missing. This will persist until communications are
fully restored.

Aly watches warnings advisories
Ct... None.

Ny... None.

Ma... None.

Vt... None.

Synopsis... Iaa kl thompson
near term... Iaa kl 11
short term... Thompson
long term... Speciale
aviation... Iaa
fire weather... Thompson
hydrology... Thompson
equipment... WFO aly


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
ANMN6 - Hudson River Reserve, NY 45 mi65 min 57°F 1018 hPa54°F

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Albany International Airport, NY8 mi44 minSSE 810.00 miOvercast56°F50°F81%1018.1 hPa
Schenectady Airport, NY17 mi2.8 hrsSSE 410.00 miOvercast55°F53°F94%1016.9 hPa

Wind History from ALB (wind in knots)
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
Last 24hrSE10SE86SE6SE7SE6SE6SE4SE5SE5SE6S5SE5S6S6SE86SE4S7SE7SE8SE7S7S8
1 day agoCalmCalmCalmCalmSE3SW3CalmCalmE3CalmSE3E4S4SE6S10S9S5S9SE8S12S9
G18
S12
G19
S12
G21
S10
G20
2 days agoNE4NE3N3NE3N3N5N3N5NW4N4N7E5NE9N7CalmCalmN53NW3CalmCalmCalmCalmCalm

Tide / Current Tables for Albany, New York
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Albany
Click for Map
Mon -- 02:43 AM EDT     -0.06 feet Low Tide
Mon -- 05:21 AM EDT     Sunrise
Mon -- 08:28 AM EDT     5.91 feet High Tide
Mon -- 09:28 AM EDT     Moonrise
Mon -- 03:26 PM EDT     -0.41 feet Low Tide
Mon -- 08:24 PM EDT     Sunset
Mon -- 09:06 PM EDT     4.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.60.90.2-00.92.64.25.25.85.853.62.41.50.5-0.3-0.20.92.43.64.44.74.43.5

Tide / Current Tables for Castleton-on-Hudson, Hudson River, New York
   EDIT      (on/off)   Help   One Week of Data
Castleton-on-Hudson
Click for Map
Mon -- 02:14 AM EDT     0.04 feet Low Tide
Mon -- 05:21 AM EDT     Sunrise
Mon -- 08:11 AM EDT     5.71 feet High Tide
Mon -- 09:28 AM EDT     Moonrise
Mon -- 02:57 PM EDT     -0.31 feet Low Tide
Mon -- 08:23 PM EDT     Sunset
Mon -- 08:49 PM EDT     4.55 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.30.60.10.31.63.24.55.35.75.44.43.121.10.2-0.30.31.52.83.84.44.543

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

GOES Local Image of Northeast    EDIT
Geos

Wind Forecast for Albany, NY (23,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Albany, NY
   (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.