Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Park City, MT

Version 3.4
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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:18AMSunset 8:16PM Tuesday August 20, 2019 11:08 PM MDT (05:08 UTC) Moonrise 9:51PMMoonset 10:17AM Illumination 70% Phase: Waning Gibbous; Moon at 20 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 Park City, MT
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location: 45.83, -109     debug


Area Discussion for - Billings, MT
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Fxus65 kbyz 210328
afdbyz
area forecast discussion... Updated
national weather service billings mt
928 pm mdt Tue aug 20 2019

Update
A couple of weak thunderstorms tried to move off the
beartooth absaroka mountains late this afternoon into the early
evening but they quickly dissipated once they moved off the
foothills. The rest of the activity has been well south of the
state across east central wyoming and this is where the activity
is expected to remain this evening. As a result, precipitation
chances were removed for most of our forecast area for the
remainder of the night. The exception is from areas along and east
of a miles city to sheridan line. Precipitation chances were
lowered for these areas just a bit this evening but we are
expecting the activity to increase after midnight as a low-level
jet develops across southeast montana. Overall, the previous
forecast remains in good shape. The updated forecast has been
issued. Hooley

Short term Valid for Wed and thu...

relatively flat upper ridge in place over the area. Surface high
pressure sitting over southern saskatchewan has provided east to
northeast surface winds today. This has provided a cooler day with
higher humidity levels as dewpoints have been in the mid 40s. The
surface high is projected to slide east to southeast the next two
days, and this will allow east to southeast surface winds to
continue over the eastern half of the area through Thursday. This
will allow dewpoints to increase further, so despite increasing
temperatures, humidity levels should not fall to levels seen on
Monday. In fact, precipitable waters will rise the next two days
and thus any storm that forms will have the capability of
producing heavy rain.

A weak shortwave is progged to slide across the southern half of
the forecast area tonight. High resolution models develop
convection over the mountains and foothills late this afternoon
and early this evening, then swing the activity east into
southeast montana this evening and overnight. A bit of a low level
jet into southeast montana is expected to keep activity going
through the night there an have thus adjusted pops a little
higher. Wednesday looks relatively quiet, as the ridge axis
amplifies over the forecast area.

An upper trough will slide across the western and central part of
the state on Thursday. The strongest energy moves across northern
montana, but there is enough sharpness to the trough, and enough
cape and shear, to kick storms off over southern montana. In fact,
precipitable water values rise to 1.6 inches over southeast
montana, which is 2.5 standard deviations from normal. Torrential
rainfall can be expected with storms over the east and may have to
watch for flash flooding. That being said, storms should be
moving fast enough, and the lack of a saturated ground, should
mitigate that threat some. Strong storms are possible from
billings east on Thursday too, given projected CAPE and shear. Twh

Long term Valid for fri... Sat... Sun... Mon... Tue...

mid level heights lower quite a bit behind the upper trough on
Friday and allow a cold front to race through the area Thursday
night and Friday. Temperatures will step down into the 80s Friday
through Sunday. More dramatic cooling is expected early next week
as highs look to be held in the 70s Monday and Tuesday with
northwest flow developing, as the upper ridge retrogrades over
the west coast. There should not be a dramatic chance of showers
through the extended, as the flow aloft will be primarily
downslope. Will focus on early Friday, (behind the trough), and
Saturday into early Sunday, (with the next onset of stronger
energy), as the main chance periods for showers. Twh

Aviation
Isolated showers and thunderstorms will end over much of the area
by 06z tonight. However, there will be a chance of showers and
thunderstorms over SE mt, generally SE of kmls overnight.

Conditions will beVFR, but MVFR is possible over the SE in storms
overnight. Expect llws over kmls from 08z tonight through 13z
Wednesday.VFR will prevail on Wednesday. Additional showers and
thunderstorms will occur over and near the southern mountains in
the afternoon. Arthur

Preliminary point temp pops
Wed Thu Fri Sat Sun Mon tue
-----------------------------------------------------------
bil 060 091 062 089 058 083 060 086 058 082 054 079 053 072
10 u 12 t 51 u 01 b 21 u 10 u 11 b
lvm 053 090 056 084 050 083 053 083 050 079 046 078 045 072
11 u 14 t 51 b 11 b 20 u 10 u 01 u
hdn 058 090 061 090 057 082 059 084 056 080 052 077 051 071
11 u 12 t 41 u 10 b 21 u 10 u 11 b
mls 059 087 063 090 058 078 059 082 057 077 051 075 051 071
21 u 03 t 62 t 11 b 22 t 11 u 11 b
4bq 058 085 060 089 058 079 058 082 056 077 051 075 051 070
22 t 13 t 62 t 11 b 32 t 21 u 11 b
bhk 055 082 057 084 057 078 056 080 055 076 049 073 049 069
20 u 02 t 73 t 12 t 43 t 21 u 22 t
shr 057 088 058 090 055 082 056 083 054 079 050 076 049 071
24 t 32 t 52 t 11 b 22 t 21 u 11 u

Byz watches warnings advisories
Mt... None.

Wy... None.

Weather.Gov billings


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Billings, Billings Logan International Airport, MT25 mi3.3 hrsNE 1110.00 miMostly Cloudy80°F53°F39%1015.1 hPa

Link to 5 minute data for KBIL

Wind History from BIL (wind in knots)
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Last 24hr------NE7N9N9N10N9N9N8NE12NE11NE12E13NE12NE14
G20
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1 day agoN6--N4----W9NW12SW9SW10SW13--SW14SW13--SW7--NW16
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N10NE6E4----
2 days agoS3S4S4--CalmSW5SW4SW5----SW5SW12SW14SW12SW8SW14
G21
S13SW9SW9S4E5E5E6--

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.
Link to Loop

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Wind Forecast for Billings, MT (1,6,7,8)
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Ground Weather Radar Station Billings, MT
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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.