Marine Weather and Tides
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.
|Sunrise 7:27AM||Sunset 7:41PM||Tuesday March 20, 2018 7:31 AM MDT (13:31 UTC)||Moonrise 8:33AM||Moonset 10:14PM||Illumination 14%|
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7 Day Forecast for Marine Location Near Salt Lake City, UTHourly EDIT Help
Area Discussion for - Salt Lake City, UT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus65 kslc 201006|
area forecast discussion
national weather service salt lake city ut
406 am mdt Tue mar 20 2018
Synopsis A developing storm system along the west coast will
bring rain and high elevation snow to much of the state for the
latter half of the week. This storm will move east through the
area this weekend, leading to cooler temperatures and lowering
snow levels through Sunday.
Short term (until 00z Saturday) The next upper trough moving
south along the britcol coast today will evolve into a closed low
off the pacific northwest southern britcol coast for the latter
half of the week. Ahead of this developing upper low the
downstream ridge axis along the spine of the rockies will leave
much of the great basin in an increasingly strong, moist, and mild
southwest flow aloft through the end of the week.
For today a low-amplitude ridge across the great basin will
maintain dry conditions and seasonally mild temps areawide. Plenty
of mid high-level moisture will stream through the ridge position
which will serve to hold temps down a few degrees this afternoon.
The atmospheric river (ar) advancing toward the california coast
this morning will be a feature to watch for southern western utah
heading into the latter half of the week. Fairly low pwat values
today will begin to climb tonight, then jump higher across
southern western utah as the ar works across the desert southwest
and southern great basin for Thursday Friday. Pwat values will be
running 3 to 4 standard deviations above normal, leading to a
moisture-rich environment for much of utah late in the week.
The initial weak shortwave ejecting northeast ahead of the
developing coastal upper low tonight does not look to be
especially productive as the thermal support for lift will be
weak and poorly organized. For late tonight and Wednesday the
next weak shortwave lifting northeast through utah will be
supported by fairly deep and moist warm advection. Anticipating a
somewhat broader area of mostly light precip to accompany this
next feature across mainly central and northern utah late tonight
through early Wednesday afternoon.
After a short break in organized precip late Wednesday through
Wednesday night, will look for the intensity and areal coverage
of precip to increase dramatically during the day Thursday. With
deep layer now firmly established across southern western utah,
any supporting synoptic-scale lift should easily generate
widespread and occasionally heavy precip by late Thursday and
through the day on Friday.
One area of concern will be across far southwest utah Thursday
night through Friday morning. Looking at the potential for heavy
rain in extreme southwest utah with the ar pointed at the area of
the state. Synoptic-scale lift looks to be substantial in that
area as the remnant of the upper low currently near 32 140 lifts
through the area as an open wave. Strong low-level warm advection
ahead of this dynamic feature along with terrain upglide will set
up a scenario where persistent moderate to locally heavy rain
could lock in over extreme southwest utah. Looking at significant
rises in area rivers, though with no real snow cover at the
higher elevation to add to the runoff do not anticipate river
flooding at this time.|
Snow levels statewide will be rather high as near 700mb temps
remain at or above freezing through Thursday evening. Some modest
cooling aloft later Thursday night will translate into lowering
snow levels, though even then the valleys should see precip-type
remain as rain overnight through Friday. The areal coverage of
precip should trend downward Friday afternoon as the passing
dynamic feature moves east of the area.
Long term (after 00z Saturday) The main storm system is expected
to be along the pacific northwest coast Friday night before moving
inland to impact the forecast area over the weekend. However, there
remains disagreement among the models with respect to how the
scenario evolves. The latest GFS brings the trough across as a more
or less cohesive unit Saturday into Sunday, pushing the associated
cold front through northern utah during the day Saturday and through
the rest of the area by Sunday morning.
The situation remains a bit more complicated in the 00z ec, which
splits off a wave that grazes northern utah during the day Saturday,
bringing an initial push of cooler air into northern utah. That wave
is followed by the main system on Sunday, which phases with another
weaker pacific wave as it does so. It pushes the cold front into
central southern utah by Sunday night but the whole feature stalls
by Monday, with the center shifting to arizona on Tuesday as it
continues to merge with the other wave and closes off.
What these solutions have in common is that they indicate unsettled
weather, particularly over northern utah and southwest wyoming,
through the entirety of the long term period. As such, have kept at
least isolated pops in through day seven. I am most confident about
precip over northern utah with the initial arrival of the front, so
pops are highest there, but have generally broadbrushed pops for the
remainder of the period, lacking confidence in the precise timing of
With regard to temperatures, there is relatively high confidence in
the cooldown from the front as the main system moves through, with
the ec and GFS both dropping 700mb temps into the -10c to -12c range
over northern and central utah, so have maintained a drop to maxes
up to 10f below seasonal normals by Sunday with a slow warming trend
Aviation The slc terminal will seeVFR conditions throughout the
day with increasing clouds. Southeast winds are expected to shift to
the northwest between 19z and 21z.
Slc watches warnings advisories
Short term... Conger
long term aviation... Traphagan
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 StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Salt Lake City, Salt Lake City International Airport, UT||2 mi||38 min||SSE 9||10.00 mi||Mostly Cloudy||41°F||27°F||57%||1018.8 hPa|
|Hill Air Force Base, UT||24 mi||34 min||ESE 10||10.00 mi||Fair||33°F||18°F||56%||1019.3 hPa|
Wind History from SLC (wind in knots)
|1 day ago||N||N||N||N||NW|
|2 days ago||W|
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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 Salt Lake City, UT (9,2,3,4)(on/off)  Help
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