Saturday, June23, 2018

Marine Weather and Tides
Holly Hills, CO

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:31AMSunset 8:33PM Saturday June 23, 2018 12:09 PM MDT (18:09 UTC) Moonrise 4:24PMMoonset 2:49AM Illumination 78% Phase: Waxing Gibbous; Moon at 10 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 231755
area forecast discussion
national weather service denver boulder co
1155 am mdt Sat jun 23 2018

Issued at 1149 am mdt Sat jun 23 2018
forecast looks on track. Models are consistently showing some weak
convection starting around monument and moving east through
lincoln county mid to late afternoon. This should be in an
environment with capes below 1000 j kg and is not expected to be
much of a severe threat. Expecting showers and storms to develop
behind the cold front later this evening, but models are also
trending toward keeping most of this north of denver. This will
also not be much of a severe threat. Best bet for stronger storms
will be the result of moisture return on 15-20 knot southerly
winds over the eastern portion of the plains this evening. Models
show this being fairly well capped and don't blow this up, but if
something does develop it would have 1000-1500 j kg of CAPE and
lots of shear to work with. Target area for this would be east and
south of fort morgan in the mid to late evening hours. Heavy rain
threat is likely limited to some anchoring redevelopment of this
activity along the front in the late evening hours.

Short term (today and tonight)
issued at 234 am mdt Sat jun 23 2018
wnw flow aloft will be across the area in advance of a rather stg
upper level trough which will affect the area late tonight. At
the sfc, low pres will extend from sern wy into ERN co. Thru the
aftn really don't see much threat for tstms, although a few
higher based storms may develop over the palmer divide by late
aftn. As for highs, 850-700 mb temps are similar to yesterday so
will keep readings mainly in the 80s across nern co.

For tonight the upper level trough will begin to affect the area
with a gradual increase in QG ascent by 06z. In addition NRN co
will be in left front quadrant of an approaching upper level jet. At
the sfc, a cold front will move into nern co this evening with
increasing low level moisture behind the front. Overall would
expect an increasing chc of showers and tstms by mid to late evening
which will continue overnight especially across nern co. There is
some agreement among the models that an area of heavier rainfall
may develop over portions of far nern co overnight, north of the
frontal boundary, where a theta-e axis develops. As far as severe
potential, there is decent shear tonight so there could be a few
svr storms from mid evening into the overnight hours across
portions of the plains.

Long term (Sunday through Friday)
issued at 234 am mdt Sat jun 23 2018
n upper trough will move from western colorado at 12z Sunday
morning eastward across the CWA Sunday afternoon through about 12z
Monday morning. Northwesterly flow aloft will cover the area the
rest of Monday and Monday night. The QG omega fields show fairly
decent upward energy over the CWA Sunday considering it is the
last week of june. Downward energy is in place Sunday night
through Monday morning,then weak downward motion is progged
through Sunday night. Northerly upslope wind are progged on Sunday
and Sunday evening. Normal diurnal patterns are expected from 06z
Monday into Tuesday morning. For moisture, models still show a
pretty cloudy Sunday and Sunday evening. The NAM shows way more
low level cloudiness over the plains than the other models
indicate. Precipitable water proggs are the in the 0.75 to 1.10
inch range for the plains and lower foothills Sunday into the
evening. By Monday they have decreased into the 0.25 inch over the
west CWA to 0.75 inch over the far eastern boarder. There is fair
cape over much of the CWA on Sunday, but values are below 1000
j kg. After that, the CAPE is pretty sparse Sunday night through
Monday night. There is measurable rainfall over much of the CWA on
Sunday, but amounts are not very high. The best is east of the
cwa. Measurable rainfall is practically nothing by 06z Sunday
midnight. There is practically nothing after that into Tuesday
morning. For pops, will mostly keep the "chance"s going Sunday and
Sunday evening. No pops after that except for "isolated" over the
high mountains late day Monday. For temperatures, Sunday's highs
will be 3-6 c cooler than today's readings. Monday's highs climb
3-6 c over Sunday's. For the later days, Tuesday through Friday,
models keep upper ridging over the forecast area throughout. The
airmass is dry and well above normal for temperatures. There are a
couple periods of "isolated" late day showers and storms
according to the forecast builder on Wednesday and Thursday.

Aviation (for the 18z tafs through 18z Sunday afternoon)
issued at 1149 am mdt Sat jun 23 2018
vfr through this afternoon. Isolated storms should remain away
from the denver area. More numerous showers storms will develop
behind a cold front that will move through denver around 04z.

Areas of MVFR will develop and persist through Sunday morning.

Lifting ceilings are expected during the day Sunday, though
instrument approaches to kden may still be needed most of the day.

Fire weather
Issued at 234 am mdt Sat jun 23 2018
elevated fire danger will remain across central and southeast
areas park county this afternoon, however, winds will be below
red flag criteria.

Bou watches warnings advisories

Update... Gimmestad
short term... Rpk
long term... Rjk
aviation... Gimmestad
fire weather... Rpk

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Buckley Air Force Base Airport, CO11 mi2.2 hrsW 510.00 miMostly Cloudy75°F43°F33%1008 hPa
Denver - Centennial Airport, CO12 mi76 minVar 510.00 miMostly Cloudy77°F37°F24%1008.6 hPa
Broomfield / Jeffco, CO16 mi2.3 hrsN 050.00 miPartly Cloudy73°F39°F29%1015.9 hPa
Denver, Denver International Airport, CO18 mi76 minWNW 410.00 miMostly Cloudy79°F39°F25%1007.1 hPa
Erie Municipal Airport, CO21 mi76 minENE 310.00 miFair78°F41°F27%1015.9 hPa
Denver Nexrad, CO22 mi82 minE 410.00 miMostly Cloudy79°F41°F26%1015.2 hPa

Wind History from BKF (wind in knots)
Last 24hrSW11
1 day agoN4NE9NE6NE11NE10NE12E10E9E6SE6SE9SE12S10S16S19S18
2 days agoNW5N5NE9N10NE5NE11NE14NE8NE7E6E4SE7S5E5SE5S7CalmSW4SW4W6CalmW4W4Calm

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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GOES Local Image of    EDIT
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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Denver/Boulder, CO (14,3,4,5)
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Ground Weather Radar Station Denver/Boulder, CO
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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 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 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.