Wednesday, January24, 2018 L-36.com


Marine Weather and Tides
Cherry Creek, 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 7:11AMSunset 5:11PM Tuesday January 23, 2018 10:39 PM MST (05:39 UTC) Moonrise 11:56AMMoonset 12:00AM Illumination 50% Phase: First Quarter Moon; Moon at 7 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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7 Day Forecast for Marine Location Near Cherry Creek, CO
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location: 39.64, -104.86     debug


Area Discussion for - Denver/Boulder, CO
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Fxus65 kbou 240301
afdbou
area forecast discussion
national weather service denver boulder co
801 pm mst Tue jan 23 2018

Update
Issued at 752 pm mst Tue jan 23 2018
overnight, clearing will allow for radiational cooling with
snowcover to bring temps into the single digits for mountain
valleys and teens elsewhere. Goes-16 water vapor shows high level
clouds moving in over the ridge with increasing moisture from the
next disturbance currently over the pacific. I expect these
clouds to increase over the region through the early morning hours
on Wednesday. The increasing moisture combined with wave- induced
stability near mountain top will allow for a building and
persistent mountain wave clouds over the metro area and north.

This will affect high temperatures so kept what the previous shift
had, which captures this well. Also added a slight increase of
winds over the higher terrain with gusting through the afternoon
up to 60 mpg over the higher mountain passes. Some blowing snow
will be possible with the increased wind gusts. Elsewhere,
conditions will be partly cloudy with highs reaching into the
upper 50s.

Short term (this evening through Wednesday)
issued at 306 pm mst Tue jan 23 2018
flat upper level ridge will build across the forecast area through
Wednesday. Warm advection occurs and the airmass will remain dry.

Moderate westerly flow remains in place, and with a mountain top
stable layer developing there will be some gusty winds in near the
front range mountains and foothills. Cross sections show flow
increasing to around 35 knots so the wind prone areas will likely
see peak gusts reach 45-55 mph, mainly over the higher peaks and
higher wind prone ridges in the foothills. Some gusts will also
work out onto the nearby adjacent plains, but overall gradient is
rather weak so they won't make it very far eastward.

Temperatures will be tricky again. Have generally undercut
guidance for tonight in most locations with snow still on the
ground and mostly clear skies. On Wednesday, a wave cloud will
likely thicken along the front range, so despite warm advection,
temperatures will likely be held down mainly from the northern
suburbs of denver to the fort collins and greeley area where
shallow inversions will hold in place. Have adjusted the forecast
accordingly.

Long term (Wednesday night through Tuesday)
issued at 306 pm mst Tue jan 23 2018
a progressive upper air pattern is forecast to continue across
the united states through the upcoming week with a series of open
troughs and upper level ridges passing over colorado. Wednesday
night will start out with the upper level ridge axis over eastern
colorado, on the move eastward. Thursday will see increasing
southwesterly flow aloft ahead of an approaching trough.

Temperatures should be mild across the forecast area under the
southwesterly flow. Moisture with the upper trough looks like it
will arrive Thursday evening with an increasing chance of snow in
the mountains through Friday morning. The GFS and ECMWF are in
fair agreement with the amplitude and strength of the approaching
trough. This system should be moving out of the state by Friday
afternoon after producing a few inches of snowfall in the
mountains. The plains should remain dry. Gusty winds over mountain
ridges will also be possible.

Northwesterly flow aloft should continue through the weekend and
early next week as ridging builds over the southwestern united
states. Subsidence under the ridging will be enough to cut off any
mountain snow shower activity resulting in dry conditions through
the weekend. Any moisture coming in off the pacific should be
shunted well to the north of colorado.

The next chance of precipitation after that appears to be the
middle of next week, but the ECMWF and GFS are now showing the
next trough to be an open wave, without much amplitude. Will need
to watch some more model runs before getting a handle on how much
amplitude and moisture this system will contain.

Aviation (for the 00z tafs through 00z Wednesday evening)
issued at 752 pm mst Tue jan 23 2018
vfr conditions will prevail through the period. Winds will
gradually move ssw between 04 and 06z with bjc being the
predominant terminal to stay more westerly. Speeds will range
from 8 to 14kts and continue to hold from the SW through the day.

Bjc could see occasional gusty winds from the west between 25 and
30kts by the afternoon on Wednesday due to increased mountain
wave.

Bou watches warnings advisories
None.

Update... Bowen
short term... Barjenbruch
long term... Dankers sullivan
aviation... Bowen


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Denver - Centennial Airport, CO6 mi46 minS 710.00 miFair21°F9°F59%1028.8 hPa
Buckley Air Force Base Airport, CO9 mi1.7 hrsSE 1010.00 miFair21°F10°F63%1027.7 hPa
Denver, Denver International Airport, CO18 mi46 minSSE 1110.00 miFair17°F7°F64%1028.1 hPa
Denver Nexrad, CO20 mi45 minS 710.00 miFair17°F10°F74%1025.1 hPa
Broomfield / Jeffco, CO23 mi1.9 hrsSE 530.00 miA Few Clouds28°F12°F51%1024.4 hPa

Wind History from APA (wind in knots)
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Last 24hrCalmS3W4CalmCalmW6S3SW9W3CalmNW63CalmS3E4CalmE3SE7S8SE9S8S13S13S7
1 day agoNW8W4NW6W6NW10W9W8W10W8W9W9W8W13W13W11NW8NW12NW11NW8NW9CalmS4CalmS4
2 days agoE4NE3NE5NE7NE7NE7N9N10N11N8N12N12N15
G23
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G25
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G29
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G31
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N18N17N15
G23
NW8NW12N9

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralPlains    EDIT
Geos

Wind Forecast for Denver/Boulder, CO (0,6,7,8)
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Ground Weather Radar Station Denver/Boulder, CO
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weather_mapweather_map weather_map

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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.