Tuesday, February20, 2018 L-36.com


Marine Weather and Tides
Sheridan, CO

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 6:43AMSunset 5:44PM Tuesday February 20, 2018 8:33 AM MST (15:33 UTC) Moonrise 9:31AMMoonset 10:45PM Illumination 28% 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 Sheridan, CO
   Hourly   EDIT   Help
location: 39.68, -105.06     debug


Area Discussion for - Denver/Boulder, CO
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus65 kbou 201102
afdbou
area forecast discussion
national weather service denver boulder co
402 am mst Tue feb 20 2018

Short term (today and tonight)
issued at 350 am mst Tue feb 20 2018
very light snowfall continues to diminish across northeast
colorado this morning as the upper jet responsible for the snow
has moved northeast into the northern high plains. Only some
lingering light banded snowfall across far northeast colorado and
over portions of douglas and elbert counties remains. Appears
this will also diminish before sunrise. Will let the wind chill
advisory run its course through early this morning as observations
still showing wind chill readings in the -12 to -27 degrees below
zero, coldest up along the wyoming border and over jackson county.

Decided to also add remainder of far northeast colorado and
extending down to lincoln county as well as winds are still brisk
there. As winds continue to relax after sunrise, wind chill
issues will diminish.

Despite the exiting weather maker, there still remains lingering
troughiness across the great basin this morning and a weak wave
will push across the area this afternoon and evening. This will
result in continued scattered snow showers in the mountains and
some of this expected to spill east over the adjacent plains this
afternoon under shallow upslope flow. Moisture depth is rather
shallow so expect any accumulation's on the plains less than 1 2
inch of snow. Improving conditions later tonight with clearing
skies.

Temperatures will remain quite cold today under the influence of
cold surface high pressure building south and east across the
central plains. Readings will struggle to get out of the teens
from denver northward.

Long term (Wednesday through Monday)
issued at 320 am mst Tue feb 20 2018
active weather pattern for the long term with persistent pieces of
energy moving around the base of an elongated, nearly stationary
upper trough. The trough extends from the north into canada south
across the great basin and into the pacific wear it wobbles but
stays persistent through Saturday with the help of a strong,
nearly 590 decameter high over the atlantic. The synoptic pattern
will keep SW flow over the state keeping decent moisture moving
into the SW and central mountains with slightly less for the
northern mountains and adjacent plains. For Wednesday moisture
and SW flow ahead of the upper trough will help to keep a slight
chance of snow for the central mountains with dry conditions on
the plains. Temperatures will rebound slightly from Tuesday but
highs will still be hovering around freezing. Light snow will fall
in the mountains into the early morning with little accumulation.

For Thursday a piece of energy moves up with the SW flow providing
enough lift for increasing snow chances for the high country. Cld
air will continue to dominate the plains with increasing clouds
and temperatures staying around or just below the freezing mark.

Thursday into Thursday evening moisture deepens with high rh
levels through the 350 mb level. Friday another upper trough will
drop out of the pacific NW and settle into the great basin
maintaining the SW moist flow into the state. The upper jet will
shift slightly northward helping to increase the chances of a more
convective CSI set-up for Friday snow. The main thing that seems
to be lacking is a strong cold push with the small chances of
freezing drizzle where there is increased drying. Will have to
monitor model consistency with Friday's set-up.

Over the weekend, the GFS and to an extent the ec shows the trough
that brought weather to the region on Friday move eastward over
the central us. This will be followed up with more zonal flow as
a new trough develops over the pacific nw. Models still hinting at
some CSI produced precip returns into Saturday morning before
stabilizing and drying out Sunday. Temperatures for the weekend at
this time look to be in the 30s reaching into the 40s by Sunday.

Aviation (for the 12z tafs through 12z Wednesday morning)
issued at 320 am mst Tue feb 20 2018
varying MVFR CIGS early this morning with still some very light
snow flurries remain at kden kapa. This should all be ending
before sunrise. Expect some improvement in low stratus deck this
morning. Expect additional light snow flurries to move back into
terminals mid afternoon through evening, especially at kbjc kapa
and may also make it to kden as well. Looks real light so any
accumulations will be under a half inch. Gradual clearing later
tonight as surface winds return to drainage.

Bou watches warnings advisories
Wind chill advisory until 8 am mst this morning for coz030-035-
038-042-046-048>051.

Short term... Entrekin
long term... Bowen
aviation... Entrekin


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Denver - Centennial Airport, CO14 mi41 minESE 410.00 miMostly Cloudy-1°F-5°F82%1021.8 hPa
Broomfield / Jeffco, CO16 mi42 minN 015.00 miMostly Cloudy1°F-2°F85%1011.8 hPa
Buckley Air Force Base Airport, CO17 mi96 minSSE 310.00 miMostly Cloudy-6°F-10°F83%1020.6 hPa
Erie Municipal Airport, CO23 mi34 minN 010.00 miFair-7°F-11°F80%1015.2 hPa
Denver, Denver International Airport, CO24 mi41 minESE 610.00 miMostly Cloudy-1°F-6°F79%1021.3 hPa

Wind History from APA (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 24hrE4NE5NE6NE5E4N7N8NE7NE7E11E7E3NE6E4CalmNE5N7N9N8NE5E6SE5CalmE4
1 day agoS9
G16
S11W22
G28
W21
G29
W16
G27
W17
G26
W19
G32
W20
G30
SW17
G27
SW13
G21
W8W10N16
G26
N12NE7E5NE7NE8NE6NE8E8NE6NE5NE5
2 days agoSE10S6SE7SE734S8--S15S14S20
G31
S18
G30
S17S9--S17SW22
G30
SW20SW125SW13
G19
SW17
G26
S7S11

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralPlains    EDIT
Geos

Wind Forecast for Denver/Boulder, CO (10,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Denver/Boulder, CO
   (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.