Saturday, February23, 2019 L-36.com


Marine Weather and Tides
Calhan, 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 6:38AMSunset 5:46PM Saturday February 23, 2019 1:38 PM MST (20:38 UTC) Moonrise 11:41PMMoonset 10:20AM Illumination 80% Phase: Waning Gibbous; Moon at 19 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 Calhan, CO
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location: 38.85, -104     debug


Area Discussion for - Denver/Boulder, CO
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Fxus65 kbou 231707
afdbou
area forecast discussion
national weather service denver boulder co
1007 am mst Sat feb 23 2019

Update
Issued at 1005 am mst Sat feb 23 2019
snow is just about done over the far eastern plains as the main
system pushes further east away from the area. Will go ahead and
cancel the winter storm warning. Now, northerly winds will be
increasing across the eastern plains to possibly reduce
visibilities in blowing snow and create wind chill readings in the
teens. Clouds clearing nicely from the west, with no other
updates to the forecast needed.

Short term (today and tonight)
issued at 308 am mst Sat feb 23 2019
snow will continue to end from west to east through the early
morning. By noon, expect the snow to be east of the forecast area
and colorado. Additional snowfall of up to 4 inches will be
possible over lincoln county. This combined with north winds
gusting to 40 mph will result difficult travel conditions this
morning. The winter storm warning is set to expire at 11am, which
seems on track. Most of the advisories expire at 8am. Will likely
cancel the western advisories early, including the denver area.

Will use the latest radar and satellite to determine this in the
next couple of hours. Windy conditions are expected to continue
this afternoon due to the strong pressure gradient. Areas of
blowing will occur because of the fresh snow and gusty winds. It
will be another cool day across northeast colorado with highs
mainly in the 30s.

There will be an increase in moisture and clouds over the
mountains this afternoon and tonight. Appears there will be enough
moisture and strong enough northwest flow to squeeze out some
snow showers tonight. Additional snowfall here is expected to be
light and less than 2 inches. The downslope northwest winds will
result in mostly clear skies across northwest colorado tonight. It
will be windy in and near the foothills with gusts to 50 mph
tonight.

Long term (Sunday through Friday)
issued at 308 am mst Sat feb 23 2019
for Sunday, the upper level pattern has the deeply wrapped low
pushing over the great lakes putting co in zonal flow aloft. The
polar jet is placed to the north of the state with weak QG energy
over the region. This leaves conditions dry on Sunday under warm air
advection that will help to bring temperatures back into the 40s
after last weeks cold streak.

For the start of next week, flow remains zonal with westerly flow in
the mid levels. At the surface, models show a deepening lee side low
near the northern foothills that is projected on cross sections with
increasing downslope flow Sunday into early Monday clearing out low
and mid levels clouds with overnight temperatures in the upper teens
and 20s. Monday will stay dry with increasing clouds with highs in
the 40s to low 50s. Conditions will be much the same for Tuesday as
the system over western canada and the pacific NW stays north of the
state with the influence of the polar jet. At this time, models do
not show this system making its way south or impacting the state
until late Wednesday. Temperatures will reflect this slight dry
period with highs warming into the mid to upper 50s by Tuesday.

For Wednesday, models show a back door cold front entering from the
ne cooling highs slightly my mid week with temperatures in the 40s
on the plains, and 20s to 30s in the mountains. Mid and upper level
moisture will increase with enough QG and orographic lift for a
slight chance of snow in the mountains Wednesday night into
Thursday. Currently, the GFS is far more excited than the ec, but
since the ec has some returns will keep pops in the forecast for
now. By Thursday evening, the elongated upper low that was spinning
over the pacific NW will makes its way SE with a jet streak at the
base of the upper trough. This could increase snow chances for the
higher elevations Thursday into Friday with a slight chance for the
plains. Models diverge at this point so will keep pops low for this
period. Temperatures continue to be slightly above normal with highs
in the 50s Thursday and Friday with a slight post-frontal cool down
for Saturday.

Aviation (for the 18z tafs through 18z Sunday morning)
issued at 1005 am mst Sat feb 23 2019
hazey conditions remain after last nights snow. The current light
winds this morning will turn northwesterly around 18z with gusts
to 30 knots to help clear this haze out, then expect mostly clear
skies into Sunday. Winds decrease after 00z, except at kbjc where
gusty west winds will be possible through tonight.

Bou watches warnings advisories
None.

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


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
ELLICOTT-B AFA, CO18 mi1.7 hrsN 10 mi0°F0°F%1009.1 hPa

Wind History from ABH (wind in knots)
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Last 24hrS7
G15
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SE9SE5E11NE10NE14NE19
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1 day agoS9S6S9S8
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S10SE12E10E10NE6NE11E12N3NE8N10NE9E12E8E6E7E8E6CalmSE4S6
2 days agoS73S9
G17
S12SW10S14S10S8SE13SE10SE11SE10SE9E11E8SE4E8E6CalmNE7E6E5S6S7

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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Wind Forecast for Denver/Boulder, CO (15,3,4,5)
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Ground Weather Radar Station Pueblo, 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.