Friday, February22, 2019 L-36.com


Marine Weather and Tides
Sheridan, CO

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:41AMSunset 5:45PM Friday February 22, 2019 9:49 AM MST (16:49 UTC) Moonrise 9:38PMMoonset 8:51AM Illumination 89% Phase: Waning Gibbous; Moon at 18 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 220950
afdbou
area forecast discussion
national weather service denver boulder co
250 am mst Fri feb 22 2019

Short term (today and tonight)
issued at 250 am mst Fri feb 22 2019
this morning, latest radar and METAR observations indicate light
snow in the mountains, foothills and urban corridor north of
denver. Elsewhere dense fog with some freezing drizzle. Most of
this handled with the current winter weather advisory that is
effect through this morning for the parts of the northeast plains.

Freezing drizzle and light snow impacting areas mainly north and
east of the i-76 corridor this morning, then freezing fog and
patchy freezing drizzle impacting the i-70 corridor. The models
indicate the upper level jet MAX that has helped produce the light
snow this morning will lift to the north and east. This should
result in decreasing snow coverage after 12z this morning.

This afternoon, the airmass will become increasingly unstable over
the mountains as the axis of the upper level trough starts to
shift eastward. The trough axis will make its way across the
region late this afternoon and tonight. Snow will increase in
coverage and intensity so will keep the winter weather advisory in
place for the zone 34 through this evening. Models generally show
weak mid level QG ascent this morning, with moderate QG ascent
developing with the passage of the main trough tonight. Strongest
lift associated with the trough will pass to the south of the cwa
tonight.

For tonight, main issue will involve the heavy snow and strong
wind potential for the far eastern plains. Main concern will be
over zones 46 and 47 in closer proximity to the strengthening
surface low. The models show the strongest cyclogenesis near the
tx ok panhandles tonight. The eastern part of our CWA will be on
the fringe of the heaviest snow. At this time, will hold on to the
winter storm watch zones 046>051. North and west of the watch
area, snowfall amounts in the 1-3 inch range. Could see localized
bands of moderate snow drift off the foothills and across the
urban corridor and adjacent plains around 00z. Evening commute
could be impacted if this occurs. If confidence in this increases,
day shift may want to address with a possible winter weather
advisory when the morning highlights expire at noon.

Long term (Saturday through Thursday)
issued at 250 am mst Fri feb 22 2019
strong vertically stacked low should be near the oklahoma
panhandle 12z Saturday. Expect snow and windy conditions to be
continuing into the early morning hours over the far eastern
plains. As this system lifts northeast, snow will end across the
eastern plains Saturday morning. In its wake, windy and cool
conditions will prevail for the rest of Saturday.

For Sunday and next week, a zonal pattern will prevail over most
of the continental u.S. There may light mountain snow from time to
time, but the lack of large scale features make timing snowfall
difficult. Temperature forecast will be tricky from Monday on.

There will be two surges of arctic air over the northern states.

Large temperature differences are expected across the area with
pacific air battling the arctic airmass just to the north. Models
favor Monday and Wednesday being the cooler days. Far northeast
colorado will likely remain in the 20s these days. On the warmer
days, Tuesday and Thursday, areas near the foothills will approach
60 degrees.

Aviation (for the 06z tafs through 06z Friday night)
issued at 250 am mst Fri feb 22 2019
ifr conditions will likely prevail at kden through 14z this
morning with a gradual improvement the rest of the morning. Ifr
cigs at kbjc and kapa, but so far visiblities are above 1 mile.

Still expect those to drop to less than a mile at some point.

Still cannot rule out some light freezing drizzle. Conditions
should improve by midday, but after 22z bands of light to moderate
snow showers may develop off the foothills and shift eastward
across the terminals late this afternoon and evening. MVFR ifr cig
and vsby restrictions expected as the snow showers develop.

Bou watches warnings advisories
Winter weather advisory until noon mst today for coz042>044-
048>051.

Winter storm watch from this evening through Saturday afternoon
for coz046>051.

Winter weather advisory until 11 pm mst this evening for coz034.

Short term... Cooper
long term... Meier
aviation... Cooper


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Denver - Centennial Airport, CO14 mi56 minS 57.00 miOvercast22°F19°F89%1013.7 hPa
Broomfield / Jeffco, CO16 mi64 minNNE 50.50 miSky Obscured23°F21°F93%1009.8 hPa
Buckley Air Force Base Airport, CO17 mi1.9 hrsS 45.00 miFog/Mist23°F22°F100%1013.1 hPa
Erie Municipal Airport, CO23 mi55 minE 41.00 miFog/Mist22°F21°F96%1012.5 hPa
Denver, Denver International Airport, CO24 mi56 minESE 90.25 miLight Snow Fog/Mist23°F21°F96%1013.3 hPa

Wind History from APA (wind in knots)
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Last 24hr4N55N7NE4NE4NE5N9N7N6N4CalmN4E3CalmNW4W6W4CalmSW4W3CalmE3S5
1 day agoCalmNW7SE5E5E4E10
G17
SE11E11E11SE5SW5CalmE3SE5S5S8NW7W5W6NW7W5W5W7NW10
2 days agoCalmN44N8N8N10N7N8N10N6W6NW5W3S3S3S6SE6S5SE3SW3S5SE8S7S5

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 (11,2,3,4)
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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.