Friday, August18, 2017

Marine Weather and Tides
Holly Hills, 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 6:14AMSunset 7:52PM Friday August 18, 2017 12:59 AM MDT (06:59 UTC) Moonrise 2:47AMMoonset 5:36PM Illumination 17% Phase: Waning Crescent; Moon at 26 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 Holly Hills, CO
   Hourly   EDIT   Help
location: 39.71, -104.95     debug

Area Discussion for - Denver/Boulder, CO
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus65 kbou 180206
area forecast discussion
national weather service denver boulder co
806 pm mdt Thu aug 17 2017

Issued at 806 pm mdt Thu aug 17 2017
one last shower over morgan county should dissipate in the next
hour, then dry conditions will persist through the night. Stable
and dry conditions will result in mostly clear to partly cloudy
skies tonight and Friday. A dry airmass, clear skies, and light
winds will allow for good radiational cooling tonight. Expect most
areas over northeast colorado to fall into the lower to mid 50s.

Only minor changes were made to the forecast to line up with
current trends.

Short term (this evening through Friday)
issued at 350 pm mdt Thu aug 17 2017
current radars are showing less than 10% coverage of showers and
storms over the CWA right now. Best coverage is over the northern
border counties of the cwa. There is a decent boundary stretching
from southeastern douglas county into east central washington
county. Models have west-northwesterly flow aloft for the cwa
tonight and Friday. The qg-omega fields have weak downward
synoptic scale energy for the CWA both tonight and Friday. The
boundary layer winds should go to normal drainage patterns by 04z
with maybe a little westerly downsloping mixed in. Friday's winds
look to adhere to normal diurnal patterns. Moisture-wise, it has
dried out somewhat today and should again on Friday. Precipitable
water value progs show 0.50 to 0.75 inch tonight and Friday in
the mountains. Over the plains, tonight's number range from 0.75
to 1.00 inch, then they decrease to 0.50 to 0.75 inch of Friday.

For CAPE this evening, the best numbers are over the mountains,
palmer ridge and far eastern border. CAPE decreases on Friday
according to the models, with some over the mountains, foothills
and palmer ridge. For pops, will go with 10-20%s this evening for
much of the cwa. For Friday afternoon, will go with 10-20%s for
the southwestern corner of the CWA only, mainly park county. For
temperatures, Friday highs are 0- 2 c warmer than this

Long term (Friday night through Thursday)
issued at 150 pm mdt Thu aug 17 2017
the upper ridge over the south will move north into southern
colorado Friday night and into the weekend. This will turn flow
aloft more westerly with subtropical moisture increasing into

For Friday night into Saturday moisture will be high enough to
produce some storms over the higher terrain and palmer divide
given the need of orographic lift. These storms will be isolated
in coverage and end before the evening hours.

For the weekend waves embedded waves in the flow combined with
increasing subtropical moisture from the south will bring
isolated storms over the higher terrain by the afternoon.

Temperatures will continue to be warm with the ridge still in
place with westerly flow. Highs are forecasted to be in the lower
90s through Sunday.

Monday will see continued wsw flow aloft with the ridge building
over the state. Subtropical moisture will move north under the
ridge and increase pw values slightly over the region. A lee side
trough will set up over eastern co increasing westerly flow off
the foothills and keeping conditions more stable closer to the
foothills. A convergence could set up on the place east of
sterling with the trough and bring scattered storms by the late
afternoon. Sky conditions continue to look partly cloudy around
eclipse time and increasing through the late afternoon and early
evening with convection building. For the rest of the week
models show the continued building of the ridge with waves
embedded in the flow bringing continued chances of afternoon
storms. Temperatures through the week will continue to be around
seasonal normals or slightly above.

Aviation (for the 00z tafs through 00z Friday evening)
issued at 806 pm mdt Thu aug 17 2017
threat for thunderstorms across the area has ended. Mostly clear
skies will prevail tonight and most of Friday. Light normal
drainage winds are expected through Friday. Other than a slight
chance for thunderstorms over the mountains southwest of denver,
dry conditions will prevail Friday.

Bou watches warnings advisories

Update... Meier
short term... Rjk
long term... Bowen
aviation... Meier

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
Buckley Air Force Base Airport, CO11 mi61 minSSW 710.00 miA Few Clouds62°F43°F50%1014 hPa
Denver - Centennial Airport, CO12 mi66 minESE 410.00 miA Few Clouds62°F41°F46%1015.2 hPa
Broomfield / Jeffco, CO16 mi3.1 hrsW 430.00 miPartly Cloudy73°F37°F27%1021.3 hPa
Denver, Denver International Airport, CO18 mi66 minSSW 1310.00 miFair66°F43°F43%1012.3 hPa
Erie Municipal Airport, CO21 mi64 minSSW 410.00 miFair61°F41°F49%1022 hPa
Denver Nexrad, CO22 mi64 minSSW 12 G 1710.00 miFair68°F42°F40%1021.3 hPa

Wind History from BKF (wind in knots)
Last 24hrS7S9S11S13S13S13S11S11SW10SW8SW7S3CalmW6S3SW10
1 day agoS7CalmS4SW5W3SE4E6E5NE3NE6NE5E6NE7
2 days agoSE11S8S10S8W4SW5SW6SW5CalmCalmW6N7N7NE3N6NW17

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
IR Satellite Image from GEOS

GOES Local Image of CentralPlains    EDIT

Wind Forecast for Denver/Boulder, CO (2,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Denver/Boulder, CO
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.