Marine Weather and Tides
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.
|Sunrise 6:47AM||Sunset 6:55PM||Sunday September 23, 2018 1:58 PM MDT (19:58 UTC)||Moonrise 6:38PM||Moonset 5:12AM||Illumination 99%|
7 Day Forecast for Marine Location Near Cherry Creek, COHourly EDIT Help
Area Discussion for - Denver/Boulder, CO  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus65 kbou 231758|
area forecast discussion
national weather service denver boulder co
1158 am mdt Sun sep 23 2018
Issued at 1154 am mdt Sun sep 23 2018
just some minor adjustments at this time to reflect a bit more
cumulus over the mountains and current conditions. It still looks
like we are on track to be near our record high of 90 this
Short term (today and tonight)
issued at 334 am mdt Sun sep 23 2018
another unseasonably warm day can be expected with increasing
west southwest flow aloft, a little more warm advection, and
downslope flow. We should see highs approaching 90f across the
plains considering these factors (the record high for denver is
90f set in 1905 and previous years, and we should be very close to
that). Winds increase across the mountains and far northern
foothills today, more on fire weather concerns in the fire weather
For tonight, a short wave trough will move across the northern
rockies. This will drag a cold front across the mountains after
midnight and bring a surge of cooler air onto the plains by 12z.
There is weak large scale QG ascent on the tail end of this short
wave, leading to a chance of showers. The best chance would be
over the northern mountains and fortunately in the vicinity of the
existing fires, but precipitation amounts look light and mostly
under a tenth of an inch in areas that do receive the showers.
Could see a couple sprinkles light showers stretch onto the
northern plains very late tonight behind the front. Otherwise
look for more cloudiness through the night.
Long term (Monday through Saturday)
issued at 334 am mdt Sun sep 23 2018
the flow aloft will become more westerly on Mon as a weak
disturbance exits the plains in the morning. QG fields show
downward ascent most of the day, however, there will be enough
moisture embedded in the flow along with some instability to keep
in a slight chc of showers and a few storms across the higher
terrain. Over the plains a cool front will move across in the
early morning hours which will drop temps back into the 75 to 80
degree range. By aftn capes will be around 500 j kg so will keep
in a slight chc of showers and storms as well. Also areas of smoke
may affect most of the area as well with quite a bit of haze.
For Mon night into Tue the flow aloft will become more wnw. There
is another disturbance embedded in the flow which will affect the
far nern plains overnight into early tue. In addition a secondary
push of cooler air will move across nern co as well. As a result
will keep in a chc of showers over the far nern plains with dry
conditions elsewhere overnight into Tue morning. By aftn any shower
activity will probably be confined to the higher terrain south of|
i-70. As for highs readings will only be in the 60s over nern co.
By Tue night into Wed the flow aloft will be nwly. The ECMWF still
has another weak disturbance moving across as a warm air advection
ptrn begins to develop over the plains overnight into Wed morning.
As a result this leads to some shower activity mainly across sern
portions of the cwa. Meanwhile the GFS keeps the precip further to
the south. As for highs, readings over nern co will be in the upper
60s to mid 70s.
For Thu dry northwest flow aloft will be over the area which will
become more westerly on fri. At the sfc, another front will move
into nern co on Thu which will keep temps in the mid 60s to lower
70s. On Fri highs will rise back to seasonal levels. By Sat the
flow aloft will become more southwest with warmer temps. At this
time the chc of precip Thu thru Sat looks minimal.
Aviation (for the 18z tafs through 18z Monday afternoon)
issued at 1154 am mdt Sun sep 23 2018
vfr through tonight. Wildfire smoke will increase again this
afternoon, mainly aloft and mainly north of denver, with little
impact expected on denver area terminals. Light winds will become
east to southeast by 20z, then back to S W drainage by 02z.
Issued at 334 am mdt Sun sep 23 2018
stronger winds can be expected over the northern mountains, high
valleys, and far northern front range foothills today. There has
been some evidence of moisture returning northeastward today, but
the main increase doesn't happen until this evening. As a result,
critical or near critical humidity levels around 15% can be
expected. Given the existing fires, very dry fuels, and increase
in winds today versus yesterday, we've opted to issue a red flag
warning for much of jackson and grand counties (fire weather zones
211, 213, and 217) from 11 am til 8 pm. Worst conditions expected
from noon to 6 pm. Hopefully we get a couple light showers on the
burn areas tonight, but wetting rains greater than 0.10 would be
tough to get.
Humidity levels will rise on Monday, however, gusty winds will occur
over the higher terrain with a few showers possible. Tuesday will
see lighter winds with slightly lower humidity levels over the
higher terrain. Fire danger will likely increase for Wednesday
through Friday along and west of the divide 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... Barjenbruch
long term... Rpk
fire weather... Barjenbruch rpk
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Denver - Centennial Airport, CO||6 mi||65 min||N 0||10.00 mi||A Few Clouds||81°F||27°F||14%||1010.5 hPa|
|Buckley Air Force Base Airport, CO||9 mi||2 hrs||E 3||10.00 mi||A Few Clouds||80°F||23°F||12%||1010.9 hPa|
|Denver, Denver International Airport, CO||18 mi||65 min||WSW 7||10.00 mi||A Few Clouds||86°F||18°F||8%||1008.1 hPa|
|Denver Nexrad, CO||20 mi||66 min||N 0||10.00 mi||Partly Cloudy||84°F||21°F||10%||1017.3 hPa|
|Broomfield / Jeffco, CO||23 mi||67 min||SE 8||30.00 mi||A Few Clouds||84°F||26°F||12%||1017.3 hPa|
Wind History from APA (wind in knots)
|1 day ago||S|
|2 days ago||N||N|
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