Sunday, March7, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Springdale, UT

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:54AMSunset 6:35PM Sunday March 7, 2021 5:38 PM MST (00:38 UTC) Moonrise 3:14AMMoonset 12:48PM Illumination 31% Phase: Waning Crescent; Moon at 24 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
    EDIT      (on/off)   Help


7 Day Forecast for Marine Location Near Springdale, UT
   Hourly   EDIT   Help
location: 37.24, -112.98     debug


Area Discussion for - Salt Lake City, UT
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS65 KSLC 072256 AFDSLC

Area Forecast Discussion National Weather Service Salt Lake City UT 356 PM MST Sun Mar 7 2021

SYNOPSIS. A dry and mild southwest flow will remain in place into Monday. A cooler and more active weather pattern is expected Tuesday through the end of the week.

SHORT TERM (Through 12Z Wednesday). A typical though warmer than normal early spring day continues to unfold across the region this afternoon. Temperatures are averaging around 10 degrees above normal in most locations. Upper air and satellite analysis indicate a weakening shortwave trough and associated jet max are crossing the Desert Southwest. Aside from a fairly prolific cloud shield, radar shows no precipitation across the entire region.

An upper level low is currently located over the Gulf of Alaska. Multiple disturbances are ejecting ahead of this longwave trough into the Pacific Northwest. The center of this low will gradually shift southward over the next several days. With this southward movement, multiple shortwaves will eject into the Interior West Monday into Wednesday.

A fairly strong cold front associated with one of these ejecting waves will shift southeastward into Utah Monday evening into Monday night. Ahead of this front, deep and strong southwesterly flow is expected. Currently, wind gusts are expected to largely remain below 45 mph outside of some of the normally windy locations in west central and southwest Utah. Given this, have not issued a wind advisory for Monday afternoon and evening on this shift as confidence in meeting criteria is low and overall impact is minimal. One thing to note however, like the previous wind event, and dry antecedent conditions . blowing dust is likely. Areas of blowing dust should start near the origin points in southwest and west central Utah, spreading north and east through the afternoon and evening. Reduced visibility will be possible.

This cold front will have a fairly pronounced mid-level baroclinc zone, with temperatures falling to -11C or so behind the front. As the associated shortwave lifts northeast away from the region, the cold front will stall across portions of northern/central Utah Tuesday morning.

The next shortwave will approach the state later Tuesday . again developing precipitation along this boundary (still in northern/ central Utah) for a period Tuesday evening into early Wednesday morning. As this wave departs the region, the mid-level baroclinc zone (and resulting surface feature) steadily weaken Wednesday morning.

Precipitation type for the northern mountains will be snow . however the northern valleys may initially see a rain/snow mix followed by a transition to snow Tuesday night. Amounts are expected to remain relatively light . up to 2 inches possibly more benches, somewhere around 3-6 inches for the northern mountains. This portion of the storm will favor northern and central Utah. Southern Utah will largely wait until the long term portion of the forecast.

LONG TERM (After 12Z Wednesday). Most of the long term forecast will be impacted by a phase shifting longwave trough across the Intermountain West. This evolving trough will greatly influence the precipitation forecast, primarily in the Wednesday through Friday timeframe. The bulk of the long term discussion will focus on this complex trough and discuss the precipitation forecast methodology for southern and central Utah specifically and discuss why portions of northern Utah may see a dry forecast through this time period.

(Southern and Central Utah Precipitation) . As mentioned above a predominately positively tilted trough may be undergoing a phase change into a broad area of low pressure Wednesday, then transitioning back into a elongated, positively tilted trough on Thursday as noted in several model runs. This variability and chaotic nature regarding the H5 pattern makes for varying degrees in confidence in the precipitation forecast. Overall, the models do agree on the overall trough orientation, but waiver on the development of a closed low in terms of timing and location. The approach to the PoP forecast across southern and central Utah where to continue to lean toward the NBM PoP output for Wednesday. A residual surface boundary and weak baroclinic zone aided by weak vort lobes embedded in the main trough, should be enough to initiate some light precipitation chances on Wednesday. Adjustments were made for PoPs on Thursday compared to what the NBM had initialized with. Given the consistent southerly trend amongst the models over the past few days, PoPs across southern and central Utah were increased through Thursday to account for the more southern track. Added moderate to high end PoPs across southern and central Utah into Thursday with the highest PoPs across the southern Utah mountains. The PoP forecast becomes a little murky heading into Friday as some models keep a broad area of low pressure in Arizona, while some transition back to an elongated trough. Lingering precipitation chances should continue into Friday morning but to what extent depends on the evolution of the trough. There may be a brief lull in the precipitation or it may become more isolated in nature but with the back end of the trough axis progged to move through precipitation chances should increase throughout the day, primarily over the higher elevations.

A quick note about precipitation chances for northern Utah. PoPs across northern Utah were adjusted downward with the continued trend toward a more southerly tracking storm system. The northerly extent of the precipitation may reach the southern SLC valley on Thursday, but precipitation that does occur will be very light with no expected impacts or accumulation. Any shift back toward a more northerly track will shift the precipitation axis and PoPs may need to be increased across northern Utah, but we should still expect light precipitation amounts and little impacts with that scenario also.

The latter part of the long term forecast is indicating ridging building in just in time for weekend which should usher in slightly warmer temperatures and dry conditions.

AVIATION. No weather concerns through the TAF period at the SLC terminal. Northwest winds are expected to switch back to southeast between 03-04z this evening. Any cigs developing overnight should remain above 12kft agl. Southerly winds will increase and become gusty after 16z.

SLC WATCHES/WARNINGS/ADVISORIES. UT . None. WY . None.



Kruse/Woodward/Verzella

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


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
St George Municipal Airport, UT31 mi43 minW 810.00 miFair72°F17°F12%1013 hPa

Link to 5 minute data for KSGU

Wind History from SGU (wind in knots)
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
Last 24hrNW5W4W4S5SE63SE8SE4E8SW3SW4CalmCalmSW3S4NW3SW4CalmCalmCalmW4W6W7W8
1 day agoCalmCalmSE43SE7Calm4NE6E6SE5E6E5NE63SE7SE15SE12SW7NW3S22
G26
SW17SW16
G22
W11W8
2 days agoW6SW3S4S3CalmCalmCalmCalmN3SE3SE4S3CalmSE7CalmS3NW3NW4CalmCalmCalm3CalmCalm

Tide / Current Tables for
   EDIT   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map
       (on/off)   Help Weather Map
wmap_P
GEOS Local Image of    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.