Tuesday, June27, 2017 L-36.com

Marine Weather and Tides
Sheridan, 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 5:33AMSunset 8:33PM Tuesday June 27, 2017 8:09 PM MDT (02:09 UTC) Moonrise 8:40AMMoonset 10:31PM Illumination 16% Phase: Waxing Crescent; Moon at 4 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 Sheridan, CO
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location: 39.68, -105.06     debug

Area Discussion for - Denver/Boulder, CO
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Fxus65 kbou 272140
area forecast discussion
national weather service denver boulder co
340 pm mdt Tue jun 27 2017

Short term (this evening through Wednesday)
issued at 340 pm mdt Tue jun 27 2017
a few showers and thunderstorms have developed this afternoon.

Some storms along the front range have been producing strong
microburst winds. Main shower activity should be finished by 7 or
8 pm. Satellite imagery shows that mountain areas are only seeing
fair weather cumulus development, while the plains areas are
seeing deeper and stronger showers. Surface dew points have
dropped, so most showers are expected to remain dry, with the
gusty winds. Skies should clear out overnight.

Tomorrow morning, a weak cold front is expected to move into the
region from the north. This will cool off temperatures and keep
the afternoon airmass more stable than this afternoon. By late
afternoon, convective temperatures should be reached and isolated
to scattered thunderstorms may still develop. Model soundings show
wind profiles that will be favorable for thunderstorm
organization. Aloft, westerly flow will continue with a chance
that there will be an embedded short wave that can organize bands
of shower activity. Will go with high temperatures in the 80s and
probability of precipitation values between 20 and 30 percent.

Long term (Wednesday night through Tuesday)
issued at 340 pm mdt Tue jun 27 2017
Wednesday night into Thursday a strong trough will move across
manitoba canada with a trough axis extending south across the
rocky mountain states. The GFS is more amplified with the depth of
trough than the ECMWF and thus a bit cooler as well. The trough
axis looks to cross our area midday to early afternoon, and with
the mid- level cooling and weak synoptic lift associated with the
approach of the trough axis there is a chance of thunderstorms a
cross the northern half of the area. CAPE and deep layer shear
combinations suggest that any storms that form would be capable of
hail and gusty winds, with a marginal risk of severe weather. The
threat of thunderstorms will shift from west to east and be out
of the state by late evening with the loss of surface heating and
the departure of the trough axis. Siding with the model blend for
high temperatures, which will be again a few degrees cooler than
Wednesday's highs, generally around 80 across the plains and mid
60s to mid 70s in the mountains because of total column cooling as
the trough axis passes across the northern half of the state.

Fire weather concerns are less compared to Wednesday given lower
temps, higher rh, and lighter winds... Do not anticipate any

Friday through Sunday a ridge builds across the west coast and
into the great basin, with colorado under northwest flow. Pwats
looks to remain below normal Friday with values around 0.60"
across the plains and 0.25" along and west of the continental
divide. Just a slight chance of thunderstorms Friday afternoon
mainly across the front range mountains and the palmer divide.

Some moisture makes it into colorado Saturday and Sunday, with
pwats a little above normal with values 0.70-1.0" across the
plains and 0.3-0.5" in the mountains. Best chance of thunderstorms
both afternoons evenings are across the mountains and far eastern
plains. Much better low level moisture (surface dewpoints in the
low 50s) and instability looks to set up east of a line from
sterling to akron to limon. Lift for deep moist convection away
from the mountains and foothills would be provided via outflow
from central plains thunderstorms and or from a dryline feature.

Temperatures will be rebounding Saturday and Sunday after another
below normal day on Friday, by Sunday reaching near 90 degrees
across the plains and 70s to near 80 in the mountains. With
relatively weak flow aloft and weak pressure gradients at the
surface, winds will stay down most areas.

Monday and the 4th of july models are in general agreement that a
mid and upper level ridge builds over colorado. Temperatures
across the plains should be around 90 both days, with 70s to low
80s in the mountains. Thunderstorm chances are pretty close to
zero all areas, with the exception being a few isolated
thunderstorms across the central mountains on the afternoon of
july 4th.

Aviation (for the 18z tafs through 18z Wednesday afternoon)
issued at 340 pm mdt Tue jun 27 2017
high based showers moving over the airport are currently producing
strong microbursts, impacting airport operations. Gusty winds from
variable directions should continue for another half hour or so,
with winds returning to more of a west to northwest direction
after that. Less shower activity is expected through the evening
as skies clear out. Winds will return to drainage, southerlies
overnight. Airmass will be cooler and more stable tomorrow,
leading to less shower activity.

Fire weather
Issued at 340 pm mdt Tue jun 27 2017
warm, dry and gusty conditions have developed in the high mountain
valleys this afternoon. Will let the red flag warning continue
into early this evening. For tomorrow, a weak cold front passing
through will result in cooler temperatures. Pressure gradients
will also be weaker with lighter winds. Fire behavior is not
expected to be as extreme as today, so no highlights necessary.

Bou watches warnings advisories
Red flag warning until 9 pm mdt this evening for coz211-213-214.

Short term... Dankers
long term... Schlatter
aviation... Dankers
fire weather... Dankers

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Denver - Centennial Airport, CO14 mi77 minN 910.00 miMostly Cloudy0°F0°F%0 hPa
Broomfield / Jeffco, CO16 mi76 minW 1410.00 miFair88°F28°F12%1009.8 hPa
Buckley Air Force Base Airport, CO17 mi72 minWNW 16 G 2110.00 miMostly Cloudy88°F25°F10%1000.7 hPa
Erie Municipal Airport, CO23 mi76 minW 9 G 2010.00 miFair89°F23°F9%1008.1 hPa
Denver, Denver International Airport, CO24 mi77 minWNW 22 G 2710.00 miMostly Cloudy and Breezy92°F21°F7%999 hPa

Wind History from APA (wind in knots)
Last 24hrSE10SE13S12S13S10S11S10S8S9S11S5SW19
1 day agoE10NE5SE5E4S5S7S7S9S8S5CalmW45N5N6CalmCalmNE103E10N116E8E9
2 days agoNE6NE10

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
IR Satellite Image from GEOS

GOES Local Image of CentralPlains    EDIT

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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weather_mapweather_map weather_map

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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 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.