Marine Weather and Tides
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
|Sunrise 7:42AM||Sunset 5:44PM||Tuesday January 21, 2020 8:08 AM MST (15:08 UTC)||Moonrise 4:58AM||Moonset 2:56PM||Illumination 13%|
7 Day Forecast for Marine Location Near Kanab, UTHourly EDIT Help
Area Discussion for - Salt Lake City, UT  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KSLC 211127 AFDSLC
Area Forecast Discussion National Weather Service Salt Lake City UT 427 AM MST Tue Jan 21 2020
SYNOPSIS. A couple of weak weather systems will pass through the region through Wednesday. High pressure will return late in the week.
SHORT TERM (Through 00Z Saturday). A pair of shortwave troughs will impact the forecast area over the next 36 hours. The lead shortwave is currently lifting through the lower Colorado River valley, while an upstream wave is making landfall along the Pacific Northwest coast.
The lead wave will continue on an east-northeast trajectory this morning. Large scale ascent, albeit weak, ahead of this wave has overspread southern and central UT early this morning, as noted by cooling cloud tops in IR imagery and an increase in radar returns across the area. A dry sub-cloud layer is keeping this precipitation from reaching the surface across the valleys as the column slowly saturates from the top down, however higher elevations across central and southern Utah are likely seeing periods of light snow. This will continue through the morning hours with scattered precipitation eventually reaching the valley floors before large scale forcing shifts east this afternoon. As such have maintained chance PoPs across the valleys of central and southern UT and likely PoPs in the higher terrain. The southern/central Wasatch Front remains on the northern fringe and have included only slight chance PoPs across these areas.
A brief break in precipitation is expected later this afternoon into this evening, before the second shortwave brushes by northern Utah overnight into Wednesday morning. The bulk of the upper forcing and cold air aloft will pass north of the forecast area, however sufficient lift should bring a round of mountain snowfall to northern Utah with a few inches of accumulation expected. Valleys can expect a rain/snow mix along the Wasatch Front, with snow expected in the Cache and other northern valleys where cold air remains entrenched. These locations may see an inch or two of accumulation while the Wasatch Front should see little if any.
In the wake of this second wave, mid level heights are expected to gradually rise through the remainder of the week as ridging amplifies upstream beginning Wednesday, then builds eastward through the remainder of the week. This may allow valley inversions to redevelop with a gradual increase in urban haze Thursday into Friday.
LONG TERM (After 00Z Saturday). A brief redevelopment of the 500mb ridge is expected to occur over the weekend, however, significant valley inversions will likely not be able to develop as this feature should slide eastward rather quickly. Afterwards, a trough will begin to move inland over the western U.S. by Sunday evening, allowing for a period of enhanced southwesterly flow aloft. This period of enhanced southwesterly flow will act to increase surface temperatures and raise snow levels as we head into our next shot of precipitation across the forecast area.
Confidence for widespread precipitation along the mountainous terrain is continually increasing as successive model runs (both ensemble and deterministic) depict a very similar scenario. However, there still remains some discrepancy over the mean amplitude of the trough between the EPS and GEFS. At this time the GEFS solution supports a less amplified trough as compared to that of the EPS which suggests a cutoff system near the four corners region. In the deterministic realm, the GFS translates this less amplified trough to a round of enhanced precipitation across northern Utah with little emphasis on the southern portions of the state. In contrast, the ECMWF supports a round of enhanced precipitation to the north, but also favors a round of heavier precipitation across southern Utah as the system becomes cutoff over the four corners region. In any case, confidence for precipitation across northern Utah/ southwestern Wyoming is continually increasing while the solution for southern Utah remains up in the air.
AVIATION. Generally light southerly flow with periods of northerly flow will persist at the SLC terminal through ~20-21Z before becoming northwesterly. CIGs are expected to lower to around 5,000-6,000ft AGL around 12Z, and then again to around 3,000-4,000ft AGL by 03Z. VFR conditions are expected to prevail at the SLC terminal before deteriorating to MVFR by 03-04Z with the arrival of snow showers.
SLC WATCHES/WARNINGS/ADVISORIES. UT . None. WY . None.
For more information from NOAA's National Weather Service visit . http://weather.gov/saltlakecity
For frequently asked questions about the Area Forecast Discussion visit . http://weather.gov/saltlakecity/general/afd_faqs.php
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|Bryce Canyon Airport, UT||42 mi||16 min||N 0||2.50 mi||Light Snow Fog/Mist||26°F||23°F||88%||1016.6 hPa|
Link to 5 minute data for KBCE
Wind History from BCE (wind in knots)
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|2 days ago||W||Calm||N||NE||Calm||SE||SE||Calm||SW||W||Calm||W||W||W||W||W||W||W||W||W||W||W |
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GEOS Local Image of Southwest 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.
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Wind Forecast for Salt Lake City, UT (10,2,3,4)(on/off)  Help
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