Sunday, September23, 2018 L-36.com


Marine Weather and Tides
Holly Hills, CO

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:48AMSunset 6:55PM Sunday September 23, 2018 8:34 PM MDT (02:34 UTC) Moonrise 6:38PMMoonset 5:13AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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 Holly Hills, CO
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location: 39.71, -104.95     debug


Area Discussion for - Denver/Boulder, CO
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Fxus65 kbou 232122
afdbou
area forecast discussion
national weather service denver boulder co
322 pm mdt Sun sep 23 2018

Short term (this evening through Monday)
issued at 322 pm mdt Sun sep 23 2018
lots of shallow convection upstream over western colorado and
utah, but it's still dry enough to limit CAPE and there is still
very dry air above this convective layer. As a result these clouds
shouldn't produce any precipitation. Deeper bands further north
will shift eastward, clipping northern colorado later tonight into
Monday morning as the associated trough moves past. The
environment is still pretty dry overnight. Around sunrise the cold
front will drop across the plains, bringing a bit more moisture
but still nowhere near saturation. This moisture and convergence
will help keep cloud cover through the day, but it will still
probably not produce much shower activity. Current forecast has
chance pops over the northern mountains and isolated
showers storms mainly near the northern border on Monday. This
still looks good. It should be cold enough for the precip that
does fall to be snow in some areas above timberline, but not
expecting it to go any lower. Forecast temperatures look good. We
did increase winds a little and lower humidities a little in the
mountains again--more in the fire weather section below.

Also of note is that the cold front will likely bring in smoke at
low level that the ryan wildfire produces overnight. The hrrr
smoke model shows this pattern well, but is likely overdoing the
smoke production, especially the plume from the more southern
silver creek fire. Even given this, the pattern of low level smoke
being advected from the laramie cheyenne area southward behind the
front seems likely. Laramie has still had visibilities of 5-10
miles and we're further away, so probably not that low here, but
it may well be the smokiest we've been this summer in denver. The
smoke should gradually mix out and be blown away as winds turn
more toward the east and southeast in the afternoon, but this
could be a slow process. For now, we'll add the mention of smoke
in the morning for denver northward across weld county.

Long term (Monday night through Sunday)
issued at 322 pm mdt Sun sep 23 2018
Monday night into Tuesday, a moderate to strong west northwesterly
flow aloft will be over the area. The first short wave trough will
pass to the north and east of co by 00z Tuesday. The best chance
of showers at that time will be over the far northeast plains. Mid
level cold air advection will drop the 700 mb temperatures from
10c Monday afternoon to 4c Tuesday aftn. Although it will be
cooler it will remain dry in the mountains west of the continental
divide. A cold front post-frontal upslope along the front
range palmer divide may allow for some light showers in and near
the foothills southwest of denver by late Tuesday. It will remain
cool on Wednesday over the northeast plains, with only a slight
chance of showers over the palmer divide early. Dry elsewhere
across the cwa. Weak to moderate mid level QG descent sweeping
across the state Wednesday afternoon and evening. Mid level
warming will start to develop late Wednesday and continue with a
gradual warming trend the rest of the week. A dry northwesterly
flow aloft with a ridge to the west through Friday then more of a
zonal flow aloft over the weekend.

Aviation (for the 18z tafs through 18z Monday afternoon)
issued at 322 pm mdt Sun sep 23 2018
vfr through tonight. A cold front will move into denver around 11z
Monday. This front will be rather dry, but will likely bring with
it increased smoke at low levels. Visibilities are expected to be
above 5 miles, but it may be enough to affect approaches to kden.

Only isolated showers storms are expected on Monday with little or
no impact.

Fire weather
Issued at 322 pm mdt Sun sep 23 2018
marginal red flag conditions will continue over grand and jackson
counties this afternoon. On Monday winds will be even stronger,
but humidities will also be higher. Conditions may still be near
red flag criteria, especially over the valleys and lower ridge
areas. There will be a chance of light showers, mainly over the
higher ridges and near the wyoming border. There is only a very
small chance of wetting rain.

After less wind on Tuesday, fire danger will likely increase for
Wednesday through Saturday along and west of the continental
divide, and in the higher foothills of larimer county as winds
increase and humidity levels decrease.

Bou watches warnings advisories
Red flag warning until 8 pm mdt this evening for coz211-213-217.

Short term... Gimmestad
long term... Cooper
aviation... Gimmestad
fire weather... Gimmestad cooper


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Buckley Air Force Base Airport, CO11 mi97 minNE 610.00 miMostly Cloudy73°F31°F22%1006.6 hPa
Denver - Centennial Airport, CO12 mi42 minN 710.00 miMostly Cloudy75°F28°F18%1006.1 hPa
Broomfield / Jeffco, CO16 mi48 minWNW 730.00 miPartly Cloudy77°F28°F17%1013.2 hPa
Denver, Denver International Airport, CO18 mi42 minNE 910.00 miMostly Cloudy73°F25°F17%1005.4 hPa
Erie Municipal Airport, CO21 mi41 minSSE 310.00 miFair66°F35°F32%1013.9 hPa
Denver Nexrad, CO22 mi48 minNE 510.00 miMostly Cloudy72°F28°F20%1013.2 hPa

Wind History from BKF (wind in knots)
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Last 24hrSE10S8S8S12S7S7SW9SW8S8S10S10SW10SW10SW9W4E3S7SW6NE6NE6NE7NE5NE6NE6
1 day agoS24
G35
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S13S9S9S8S6SW6NW4S10SW11SW10S4NW6NE7NE3SE3NE5NE9E8E8SE10
2 days agoE8E9E7CalmCalmNE3NE4E6E8SE8S10S8S11S12SE17SE13
G21
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SE9S6SE7S13S13
G21
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G26
S16
G22

Tide / Current Tables for
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Weather Map and Satellite Images
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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 Denver/Boulder, CO (22,6,7,8)
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Ground Weather Radar Station Denver/Boulder, CO
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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.