Friday, October20, 2017 L-36.com


Marine Weather and Tides
Cheyenne Wells, 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 7:56AMSunset 6:59PM Friday October 20, 2017 7:39 AM CDT (12:39 UTC) Moonrise 7:45AMMoonset 6:59PM Illumination 0% Phase: New Moon; Moon at 0 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 Cheyenne Wells, CO
   Hourly   EDIT   Help
location: 38.89, -102.29     debug


Area Discussion for - Goodland, KS
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus63 kgld 201142
afdgld
area forecast discussion
national weather service goodland ks
542 am mdt Fri oct 20 2017

Short term (today and tonight)
issued at 258 am mdt Fri oct 20 2017
latest upper air analysis shows the trough moving toward the plains.

Within the flow satellite imagery shows scattered clouds. At the
surface south winds were breezy due to a tight pressure gradient.

Today southerly winds will increase in the afternoon as warming
temperatures allow some of the strengthening low level jet to mix to
the ground. Am a bit concerned the cloud cover will serve to
prevent the winds from being as strong as they could be by limiting
the mixing potential. Most model data indicate winds peaking at 25
mph along the southeast part of the forecast area. However
soundings show winds of 30-40 mph in the mixed layer. Hesitant to
go too high above guidance given the scattered cloud cover, so
forecast winds are a few mph above guidance given the much stronger
winds shown in the soundings. The winds will increase to the east
this afternoon.

Tonight southerly winds will quickly decline in the early evening,
but remain breezy through the night due to the tight surface
pressure gradient in place. These winds will help keep the low
temperatures quite warm for this time of year.

Long term (Saturday through Thursday)
issued at 258 am mdt Fri oct 20 2017
Saturday morning the cold front will move through. Northwest winds
will not increase too much until mid morning when the warming
temperatures allow some of the low level jet behind the front to mix
to the ground. Winds will be strongest in the morning then
gradually decline in the afternoon. The strongest winds will be
over the west 2 3s of the forecast area. The windy conditions and
low relative humidity values may lead to a fire weather concern. See
fire weather section for further information.

There will be a slim chance for rainfall in the early morning over
yuma county between the front and the upper level short wave trough
following the front. Lift with the upper level short wave trough
will trigger a line of storms just east of the forecast area, but
graham county may catch the west edge of the storms that develop.

Saturday evening the winds will become light. With a colder, drier
air mass in place lows will be near normal. Dew points will be in
the teens and low 20s. With conditions looking favorable for
radiational cooling, am thinking the lows may be too warm. If this
is the case, a freeze watch may be needed for counties east of the
colorado border where a hard freeze has yet to happen for this
growing season.

Sunday Sunday night warm air advection will warm temperatures
compared to Saturday. Winds will be light to breezy. Dry northwest
upper level flow will move over the forecast area behind the trough
from Saturday.

An active and dynamic pattern will prevail Monday through Thursday
with alternating periods of near normal to above normal temperatures
and generally dry weather. Northwest flow aloft will dominate on
Monday, gradually becoming northerly as we head into Tuesday. This
will be in response to a cold front that will push through the
region late Monday night and early Tuesday morning. Due to lack of
antecedent moisture advection, this passage will likely be dry and
windy. I increased winds on Tuesday beginning around mid morning as
pressure rises will be a bit sharp on the trailing side of lowered
heights associated with a deep trough to our east. Could see gusts
approaching the 40 to 45 mph range with 20 to 25 mph sustained north
to northwest winds. Also adjusted temps down slightly from guidance
as very strong CAA will prevail through the day.

The upper flow will shift back to westerly as we go into Wednesday
with weak high pressure briefly traversing the central high plains.

Another cold front will push through the area on Thursday and once
more we will not have much moisture to work with as this happens.

There will be only a slight chance of precipitation as the front
moves across the region; however, breezy conditions are expected as
a sharp pressure gradient will trail the frontal passage. This front
could bring widespread freezing temperatures to the region; however,
a hard freeze is not likely as of today's guidance.

Aviation (for the 12z tafs through 12z Saturday morning)
issued at 541 am mdt Fri oct 20 2017
vfr conditions expected for the tafs. Main issue will be the
breezy winds and llws today and tonight. There should be a brief
break in the breezy winds this evening before the breezy winds
return.

Fire weather
Issued at 258 am mdt Fri oct 20 2017
wind gusts of 20-35 mph will occur over east central colorado
Saturday afternoon while relative humidity values will fall to the
upper teens. Am expecting the winds to decline through the
afternoon, but they will not be declining fast enough to avoid
occurring with the low relative humidity values. Currently the
relative humidity looks to remain above 15 percent. Even if the
relative humidity fell to less than 15 percent, it may not be for
long enough before the winds cease to be a concern. Am not
anticipating a fire weather product needing to be issued, but this
day will need to be watched in case dew points fall faster behind the
front than currently forecast.

Gld watches warnings advisories
Ks... None.

Co... None.

Ne... None.

Short term... Jtl
long term... Tl jtl
aviation... Jtl
fire weather... Jtl


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
Burlington - Carson County Airport, CO24 mi47 minS 1010.00 miFair51°F48°F92%1004.7 hPa

Wind History from ITR (wind in knots)
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
Last 24hrSW5S3S7S11S15S16
G24
S18
G25
S14
G25
S16
G23
S17
G23
S19
G26
S14S8SE12S13S13S13S16
G24
S14S13S12S12S11S10
1 day agoW9NW11W7NW8N8N14
G22
N14
G22
N12
G23
N11
G16
N9NE9E7E7E9E9E9SE6S9S9S8S4S6S5SW4
2 days agoW8W6CalmE5E6E7--SE11
G17
SE5SE7S9S8S9S11S10S10S11S10W9SW9SW7W9W8W9

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
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralPlains    EDIT
Geos

Wind Forecast for Goodland, KS (8,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Goodland, KS
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.