Saturday, June24, 2017

Marine Weather and Tides
Hanksville, UT

Version 3.4
What's New / NOTES
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 5:48AMSunset 8:45PM Saturday June 24, 2017 4:21 AM MDT (10:21 UTC) Moonrise 5:44AMMoonset 8:28PM 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
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7 Day Forecast for Marine Location Near Hanksville, UT
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location: 38.52, -110.28     debug

Area Discussion for - Salt Lake City, UT
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Fxus65 kslc 240234
area forecast discussion
national weather service salt lake city ut
834 pm mdt Fri jun 23 2017

Synopsis A generally dry west to northwest flow aloft will exist
across utah tonight and tomorrow. Strong high pressure aloft will
return to the region late in the weekend. A brief surge of
moisture will move through the area Monday.

Water vapor satellite shows ridging from california into new
mexico and northern mexico, while northwesterly flow aloft
resides from the pacific northwest into the northern rockies.

400-200mb mdcars wind observations place a cyclonic 75-105kt jet
from british columbia into the north central plains. GOES slc 00z
raob hrrr indicate that precipitable water values vary from
0.10"-0.25" mountains to 0.33"-0.60" valleys.

With high pressure in place, benign weather once again tonight.

Going forecast in fantastic shape. Just tweaked the hourly diurnal
t rh curve based on latest observations and forecast data. Also
massaged the winds due to the northerly pressure gradient with
high pressure building in. Winds outside of st george will be
lighter than last night though.

Previous discussion
Mountain cumulus clouds have developed across far southern utah
this afternoon, in and around the brian head fire. The smoke plume
from the fire remains visible on satellite as the plume drifts to
the southeast. As the atmosphere has become destabilized, the
smoke plume appears to be growing. Winds statewide largely remain
northwesterly this afternoon and some locally breezy conditions
are observed.

Going in to the weekend, the flow remains mostly unchanged under a
building ridge and northwest flow aloft. Moisture fields are pretty
meager, with mixing ratio values 3 g kg or less. Temperatures also
change very little day to day, as 700mb temps across the north range
from 10-12c and across the south 16-17c. As the heat continues
across the south, the going excessive heat warning remains in effect
for the dixie area in the southwest.

The ridge slowly shifts over utah and southwest wyoming on Sunday
night and Monday, as a shortwave trough pushes into northern
california. Southwesterly flow will increase over the forecast
area ahead of this trough, and Monday will bring a considerable
warming trend for many locations, particularly across the northern
half of the cwa.

This increased southerly flow will help bring in some additional
mid-level moisture to the area, and isolated showers and
thunderstorms could initiate over the higher terrain of utah and
eastern nevada on Monday, with the latter storms potentially
drifting into northwest utah Monday afternoon evening. Have
increased pops slightly for this possibility, particularly across
the far northwest. That said, any storms that do develop Monday
will be high based, and the dry low level airmass will make gusty
winds much more likely than significant rainfall.

The weak shortwave passes through idaho and northern utah late
Monday into Tuesday. This is just the beginning of a pattern
change, with a mean trough setting up over the pacific northwest.

While most of the moisture and instability generally remains north
of the area through Tuesday and early Wednesday, enough low level
cool air does look to filter into utah to drop temps a bit,
including ending the long string of very hot temperatures in far
southern utah. (that said, temperatures Tuesday generally
decrease from "very hot" to simply "hot".)
timing differences in the global models begin to become more
evident Wednesday through Friday, though the general idea is that
a series of weak waves and surface cold fronts could push through
the northern half of the CWA through the latter half of the week.

Have generally decreased temps a bit and raised pops for the north
Wednesday and Thursday. Leaned a bit more toward the GFS timing
for now, which has a cold front with decent moisture associated
with it on Wednesday afternoon.

Aviation Vfr with clear skies overnight at the slc terminal.

North winds will become light and variable as the night progresses.

Fire weather Northwest winds will continue to weaken across the
south and east this evening, becoming much lighter Saturday. Hot and
dry conditions remain in place area wide and will continue into the
weekend. A more stable air mass across northern utah will create
poor mixing and clearing indices while the south remains good to
excellent for clearing.

High pressure is building back across the region which will result
in more widespread haines values of 6 as the airmass becomes warmer
into next week. A weak system has the potential to bring isolated
showers and thunderstorms mainly across the north Monday into
Tuesday, and lightning is possible as well with these storms.

Slc watches warnings advisories
Ut... Excessive heat warning until 10 pm mdt Sunday for utz019.

Wy... None.

Public... Rogowski dewey schoening
aviation... Rogowski
fire weather... Dewey
for more information from noaa's national weather service visit...

http: weather.Gov saltlakecity
for frequently asked questions about the area forecast discussion

http: weather.Gov saltlakecity general afd_faqs.Php

Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from 4HV (wind in knots)
Last 24hr----------Calm----------Calm----Calm----Calm----Calm----Calm
1 day ago----------Calm----Calm----Calm----Calm----Calm----Calm----Calm
2 days ago----------Calm----Calm----Calm--CalmSW8----N7----Calm------

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
IR Satellite Image from GEOS

GOES Local Image of CentralPlains    EDIT

Wind Forecast for Salt Lake City, UT (6,6,7,8)
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Ground Weather Radar Station Grand Junction, CO
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weather_mapweather_map weather_map

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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 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 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.