Tuesday, June27, 2017 L-36.com


Marine Weather and Tides
Prairie Village, KS

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 5:53AMSunset 8:49PM Tuesday June 27, 2017 9:07 PM CDT (02:07 UTC) Moonrise 8:58AMMoonset 10:47PM 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 Prairie Village, KS
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location: 39, -94.63     debug


Area Discussion for - Kansas City/Pleasant Hill, MO
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Fxus63 keax 272336
afdeax
area forecast discussion
national weather service kansas city pleasant hill mo
636 pm cdt Tue jun 27 2017

Discussion
Issued at 323 pm cdt Tue jun 27 2017
high pressure over the ohio valley has kept the area fairly nice
with partly cloudy skies, temps in the low 80s, and a light breeze
from the SE over the region. This benign weather will end tonight
as a lee side trough develops over eastern colorado in response to
an incoming shortwave. This low pressure will help to develop a very
strong LLJ overnight through the central plains of 50+kts shortly
after sunset. This strong push of warm air will lead to the
development of elevated thunderstorms over central nebraska which
currently appears to develop into an MCS overnight. This MCS is
expected to track to the e-se and push into the region after 3:00cdt
as a line of elevated thunderstorms with strong winds possible along
the gustfront as it enters. Lack of instability will be a limiting
factor as this feature pushes into the area decreasing the threat of
severe weather. The extent of precipitation and remnant clouds from
this morning MCS will be a crucial piece of the puzzle come
Wednesday afternoon convection. Currently guidance has this feature
dissipate by late morning with strong southerly flow of 20-30kts
allowing warmer temperatures to mix down and also advect in higher
dewpoints. The main axis of higher dewpoints will lie near nw
missouri just to the west of a weak surface boundary extending down
from iowa. There is some uncertainty as to the placement of the
initial afternoon convection with GFS and ECMWF firing up over nw
missouri and then along the boundary with NAM delaying convection
until right along the boundary. This uncertainty has lead to lower
pops overall but more coverage to account for this variability. The
environment where storms do form will be primed for potential severe
weather with SBCAPE values 2000-2500j kg and 0-6km bulk shear of 35-
40kts. Large hail and damaging winds will be the main threats but
the possibility of a tornado is not zero along the boundary. With a
decent LLJ over the region tomorrow these storms may become elevated
and last into the night longer than they typically would after
sunset and may even propagate further south early Thursday morning.

The active pattern does not let up Thursday as a deepening low over
sw oklahoma will help to re-intensify the boundary over northern
missouri and lift it north with more warm frontal characteristics
Thursday afternoon. Where this boundary finally sets up will be the
focal point for the second round of potential severe weather.

Currently most of the guidance has the boundary setting up 30-60
miles south of the mo ia border. A strong LLJ with 40+kts will help
fuel strong lifting along and north of the warm front in an
environment very conducive to severe weather possibilities. Sbcape
values will be 3000+j kg, 0-6km bulk shear of 35-40kts, 0-1km shear
of 25kts, and 0-1km SRH 200+ leave all modes of severe possible with
large hail and damaging winds having a higher chance but isolated
tornadoes can not be ruled out along that warm frontal boundary.

Another threat with this system will be flooding as multiple rounds
of precipitation will help to saturate northern missouri with
training storms possible Thursday evening with storm motion parallel
to the warm frontal boundary. As the low over kansas tracks to the
ne frontogenesis will occur on the backside along the cold front
toward sunset providing another forcing mechanism to develop a more
linear mode of convection over southern NE and eastern ks. This
line of convection is expected to push through our region overnight
with plenty of instability and 0-3km shear to produce potential
damaging winds as it moves through early Friday morning.

Weak high pressure will build into the region behind this cold
frontal boundary allowing the active pattern to somewhat settle down
for a few days. All precipitation appears to stay mostly south of
our area Saturday with this weak boundary coming back up into our
region as a warm front Sunday night into Monday. This boundary
stalls in our southern CWA creating the chance for a fairly rainy
Monday, especially early in the day. This boundary will also
increase the chances of pops on the 4th of july early in the day
depending on where it finally settles down.

Aviation (for the 00z tafs through 00z Wednesday evening)
issued at 636 pm cdt Tue jun 27 2017
cumulus field will continue to die out over the next hour or two,
including that rogue cell just west of mci. Winds will begin to
gust out of the south late tonight as high as 20 to 25 kts, and
this gustiness at the surface should prevent many low level wind
shear concerns due to rapid wind speed changes with altitude. This
gustiness will increase up to 30 kts heading into the morning and
afternoon hours. A complex of showers and thunderstorms will
likely spread east across southern nebraska late tonight but will
encounter a dry and stable airmass south of stj, so any mention
of morning thunderstorms was removed from the tafs for the kc
area. A few afternoon storms are possible near and north of stj
with higher chances into far northern mo and southern ia.

Eax watches warnings advisories
Ks... None.

Mo... None.

Discussion... Barham
aviation... Hawblitzel


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Kansas City, Kansas City Downtown Airport, MO8 mi73 minSSE 1010.00 miA Few Clouds81°F66°F61%1011.3 hPa
Olathe, Johnson County Executive Airport, KS12 mi74 minSSE 1210.00 miPartly Cloudy77°F66°F71%1011.9 hPa
Lee's Summit, Lee's Summit Municipal Airport, MO14 mi74 minS 10 G 1810.00 miA Few Clouds78°F66°F67%1012.4 hPa
Olathe, New Century Aircenter, KS18 mi74 minSSE 13 G 1810.00 miMostly Cloudy79°F66°F65%1011.8 hPa
Kansas City, Kansas City International Airport, MO23 mi74 minS 1110.00 miPartly Cloudy78°F68°F71%1011.2 hPa

Wind History from MKC (wind in knots)
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Last 24hrCalmE4NE3E3CalmN3NE3CalmNE4E5E4SE8E11E11SE11SE10
G17
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1 day agoW3CalmCalmSW3SW4CalmCalmSW4--SW3SW3N5N13
G24
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2 days agoSW5SW5CalmSW4SW7W5CalmCalmW4W4NW7NW6N7N7N7N8
G15
N6NW10NW9SW9W7W6SW5W4

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
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IR Satellite Image from GEOS
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GOES Local Image of Midwest    EDIT
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Wind Forecast for Kansas City/Pleasant Hill, MO (22,6,7,8)
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Ground Weather Radar Station Kansas City/Pleasant Hill, MO
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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.