Saturday, October23, 2021
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Marine Weather and Tides
Parker Strip, AZ

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 6:48AMSunset 5:54PM Saturday October 23, 2021 2:39 PM MST (21:39 UTC) Moonrise 7:50PMMoonset 9:37AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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 Parker Strip, AZ
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location: 34.48, -114     debug


Area Discussion for - Las Vegas, NV
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FXUS65 KVEF 231717 CCA AFDVEF

Area Forecast Discussion National Weather Service Las Vegas NV 950 AM PDT Sat Oct 23 2021

SYNOPSIS. A potent weather system will move into the region Sunday night and through Monday, bringing with it significant snowfall for the higher elevations of the Sierra Nevada, gusty southwest winds, primarily across southeastern Nevada and northwestern Arizona, and light precipitation elsewhere. Temperatures will bottom out on Tuesday before improving through the week as ridging returns dry conditions to the Desert Southwest.

UPDATE. Recent satellite loops showed the swath of mid level clouds this morning over southern Nevada was sliding away to the southeast. Some additional cirrus clouds will continue to stream overhead but plenty of sunshine can be expected the rest of the day over all but northern Lincoln. A belt of southwest winds gusting 25- 30 mph across the Mojave Desert zones will continue then gradually decrease this afternoon and early evening. No immediate changes needed from the trends detailed in the previous discussion.

PREV DISCUSSION. 414 AM PDT

SHORT TERM. Today through Monday night.

A northwesterly flow aloft has opened the door for numerous shortwave trough passages. As a result, gusty southwest winds can be expected again today, primarily in a belt across the Mojave Desert from western San Bernardino County up through central Mohave County. Gusts will remain sub-advisory, peaking around 30 mph this afternoon. Additionally, this shortwave trough will drop temperatures 5-8 degrees from what they were 24 hours ago.

A strong area of low pressure off of the Pacific Northwest coast is going to be the main driver for the active weather through Monday. There is moderate model agreement that this low pressure system will undergo bombogenesis (dropping 24mb in 24 hours). The potent trough associated with this system will drop along the western United States through the day Sunday and Monday.

[Precipitation] This trough will collide with an atmospheric river as it moves into the western United States, which will effectively funnel moisture across the region. At first, the bulk of this moisture will smack the Sierra Nevada mountain range and wring out, with considerable snowfall on the eastern Sierra Slopes beginning around sunrise on Sunday morning and lasting through Monday, during which time a Winter Storm Watch remains in effect. Spill over will increase significantly Sunday night and into Monday morning, allowing the Owens Valley to approach an inch of rainfall, and the White Mountains to accrue some snowfall of their own. Current snow total forecasts for the Sierra Nevada estimate 1 to 2 feet above 9500 feet, and 1 to 5 inches between 9000 and 9500 feet, and for the White Mountains, 1 to 5 inches above 9500 feet.

Precipitation chances will spread areawide as the trough axis pushes through the region. For most, the precipitation will fall as light rain. However, light snow accumulation can be expected in the higher elevations of Lincoln County, with up to 5 inches of snow possible on the Spring Mountains and Sheep Range above 9500 feet. Highest rainfall amounts will be across the southern Great Basin and northern Mohave County between 0.50" and 0.75". Much of the Mojave Desert can expect between 0.10" and 0.25", with forecast rainfall amounts tapering off south of Interstate 40.

[Wind] Another primary impact of this system will be the gusty south- southwest winds. Winds will pick up Sunday afternoon, primarily across the southern Great Basin, but also down the Sierra Slopes. The majority of the forecast winds on Sunday look to remain sub- advisory, though the higher elevations could experience isolated gusts in excess of 40 mph at times. Gusts across Inyo County, CA will sustain through the overnight period. Winds on Lake Mead and Lake Mohave will range from 15 - 20 mph from the south on Sunday. If trends continue to increase wind speeds over area lakes, a Lake Wind Advisory will be considered, but for now looks unwarranted. That said, resulting wave heights of 1 to 2 feet are expected, so small craft need to be advised of hazardous boating conditions.

The strongest winds are expected Monday afternoon. Wind Advisories will be likely across portions of southeastern Nevada and northwestern Arizona. Held off for now, as high-resolution models do not currently go that far out. Hoping to paint a better picture for the strength and timing of these gusts prior to issuing a wind- related product. That said, the forecast currently calls for wind gusts between 40 and 50 mph in the aforementioned areas Monday afternoon. Boating conditions on area lakes will be hazardous, with wave heights approaching 3 feet at both Lake Mead and Lake Mohave. High-profile vehicles are encouraged to check the forecast prior to hitting the road, as there will be numerous locations on area thoroughfares capable of experiencing dangerous crosswinds including portions of Highway 93 in Lincoln County, Highway 95 through Desert Rock, and State Route 66 and Interstate 40 east of Kingman.

LONG TERM. Tuesday through Saturday.

Conditions will improve Tuesday, as the low pressure system from this weekend moves toward the Four Corners and southern Rockies regions. A broad ridge of high pressure will build over the Desert Southwest during the second half of the week, resulting in dry weather through the extended period, and allowing temperatures to warm back to near-normal by next weekend.

AVIATION. For McCarran . Periods of thick high clouds will continue to stream overhead through the weekend, possibly getting as low as 12K-15K feet tonight into Sunday morning. Breezy south to southwest winds are expected, with gusts of 20 to 25 knots possible, although a short period of lighter east to southeast winds may occur in the late mornings. Operationally significant weather is not likely through the weekend. Conditions will deteriorate on Monday, with rain chances and lower ceilings most likely in the afternoon before conditions improve overnight.

For the rest of southern Nevada, northwest Arizona and southeast California . Generally quiet weather is expected today, with periods of thick high clouds streaming overhead. The strongest winds will be west to southwest with gusts of 25 to 30 knots in Mohave County and the Barstow area. For Sunday, winds will increase, with southwest gusts around 50 knots over the Sierra crest and southerly gusts of 20 to 30 knots for much of the southern Great Basin and northern Mojave Desert. Chances for mountain snow and valley rain will spread over northern Inyo and western Esmeralda counties, with associated low ceilings and terrain obscuration. These conditions will spread southeast across the region Monday, with conditions improving Monday night into Tuesday morning.

SPOTTER INFORMATION STATEMENT. Spotters are encouraged to report any significant weather or impacts according to standard operating procedures.

SHORT TERM . Varian LONG TERM . Planz AVIATION . Morgan

For more forecast information . see us on our webpage: https://weather.gov/lasvegas or follow us on Facebook and Twitter


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Needles, Needles Airport, CA39 mi44 minS 12 G 1810.00 miFair85°F34°F16%1003.3 hPa

Link to 5 minute data for KEED

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Last 24hrE3S8S10S9S6SW9SW8S4W3W40SW12SW110W11SW11SW8SW7W3E5E6SW10SW6S12
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1 day ago03N50SW3SW7SW8W7SW10SW8SW5W6S4SW6S40SW40E3E3E4045
2 days ago500N6NW4W6W6SW8SW8SW4SW4SW7SW6SW5SW6SE4SW3W6N6N12N9NE653

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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.
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