Saturday, June12, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Atascadero, CA

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 5:45AMSunset 8:20PM Saturday June 12, 2021 7:41 AM PDT (14:41 UTC) Moonrise 6:29AMMoonset 9:36PM Illumination 7% Phase: Waxing Crescent; Moon at 2 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
PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 257 Am Pdt Sat Jun 12 2021
.small craft advisory in effect from this afternoon through this evening...
Today..NW winds 5 to 10 kt, becoming 15 to 25 kt with local gusts to 30 kt in the afternoon. Combined seas 3 to 5 ft dominant period 8 seconds, building to 6 to 7 ft dominant period 8 seconds in the afternoon. Patchy dense fog with vsby 1 nm or less.
Tonight..NW winds 15 to 25 kt with local gusts to 30 kt in the evening, becoming 15 to 20 kt. Combined seas 5 to 7 ft dominant period 9 seconds. Patchy dense fog with vsby 1 nm or less.
Sun..NW winds 5 to 10 kt, becoming 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft. NW swell 4 to 6 ft at 8 seconds. Patchy dense fog with vsby 1 nm or less in the morning, then patchy fog.
Sun night..NW winds 15 to 20 kt in the evening, becoming 10 to 15 kt. Wind waves 2 to 3 ft. NW swell 4 to 5 ft at 8 seconds. Patchy fog in the evening, then patchy dense fog with vsby 1 nm or less.
Mon..NW winds 10 to 15 kt, becoming 15 to 25 kt with gusts to 30 kt in the afternoon. Combined seas 4 to 6 ft dominant period 8 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Mon night..NW winds 20 to 30 kt in the evening, becoming 10 to 20 kt. Combined seas 5 to 7 ft dominant period 7 seconds.
Tue..NW winds 10 to 20 kt early, becoming 15 to 25 kt with gusts to 30 kt. Combined seas 7 to 9 ft.
Wed..NW winds 15 to 25 kt. Combined seas 6 to 8 ft.
PZZ600 257 Am Pdt Sat Jun 12 2021
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 09z, or 2 am pdt, a 1022 mb high pressure center was located about 600 nm southwest of point conception. A 1004 mb thermal low was centered in southern nevada. This pattern will change little through the period, with moderate to strong w-nw winds at times over much of the waters along with hazardous seas.


7 Day Forecast for Marine Location Near Atascadero, CA
   Hourly   EDIT   Help
location: 35.46, -120.69     debug


Area Discussion for - Los Angeles/Oxnard, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KLOX 121158 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 458 AM PDT Sat Jun 12 2021

SYNOPSIS. 12/318 AM.

Weakening onshore flow will continue to bring a gradual warming trend to the region through this weekend. Sundowner winds are expected at times through the period, strongest in the evening and overnight hours. A significant heat wave is expected throughout the coming week as high pressure develops aloft and onshore flow weakens.

SHORT TERM (TDY-MON). 12/315 AM.

Synoptically, an amplified upper ridge will continue to build in from Nrn Mexico well into Central Canada with the core of the high centered near the Four Corners Region through Monday. A 548 DM low off the PAC NW coastal waters and broad trough extending off the coast of Southern California will persist as well through the short term period. This meridional pattern aloft will allow Southern California to remain sandwiched between the strengthening ridge to the east and trough to the NW. Broad SW flow aloft and rising H5 heights will bring gradual warming across the region through Monday. The Antelope Valley will reach 100 degrees with valleys ranging in the low to mid 90s on Sunday, with an additional 3-5 degrees of warming on Monday. Coastal areas will remain mild as the marine layer influence and cold ocean temperatures will keep conditions comfortable through Sunday. By Monday high temperatures will be 5 to 15 degrees above normal and the start to what will be a significant heat wave through the remainder of next week.

For the next couple of nights, surface onshore gradients will strengthen a bit and this will allow low clouds and fog to push into the Central Coast late this afternoon or evening through early morning hours Sunday. Models were hinting at an eddy circulation developing across the SoCal Bight which should also cause some low clouds and fog to affect portions of the L.A. County Coast tonight into Sunday morning and once again Sunday night into Monday morning. With the inversion expected to remain pretty shallow expect patchy dense fog with visibility one quarter mile or less at times.

Northerly flow will increase once again Sunday evening into Monday across the western portion of the forecast area, likely resulting in advisory level Sundowner winds for the Santa Barbara South Coast and adjacent foothills once again both Sunday and Monday evenings through the overnight hours. High pressure will be building up from the southeast Monday and onshore flow weakens so all areas will see an increase in temperatures, with some additional warming effects in southern SB County due to the Sundowners and western Ventura County.

LONG TERM (TUE-FRI). 12/457 AM.

The first significant heat wave of this spring will bring prolonged heat across SW California through next week. This upper pattern set up is similar to June 26th and 27th, 1990 which produced record breaking heat across Santa Barbara, Ventura and L.A. Counties and the Painted Cave Fire in Santa Barbara County.

Synoptically, a 599DM high parked over the Four Corners region will move little through the extended period (Tue- Fri). On Tuesday, an amplified ridge well into Canada will start to break down across the Intermountain West and Nrn Plains, while holding strong to the south. A persistent upper low off the PAC NW Coastal waters will start to pivot north dragging the broad trough with it. This will allow for the strong upper ridge to slide under the trough westward across Southern California and Ern Pac. The combination of H5 heights around 594-596 DM and stronger than usual northerly gradients will cause high temperatures to rocket up well into triple digits across Valleys and the Antelope Valley. Latest model runs were indicating both GFS/ECMWF LAX-BFL northerly gradient reaching -7.0/-7.1 mb respectively. Even if this is overdone a few millibars, temperatures will have no problem reaching near or record breaking levels for some areas.

Along with strong northerly gradients, models continue to show increasing low level temperatures. There is plenty of concern for a very hot and dry Sundowner event Monday night into Tuesday and a substantial increase in temperatures at lower elevations from Santa Barbara to LA County. Looking back at historical data with similar parameters, highs in the mid to upper 90s are likely in LA County away from the immediate beaches and low to mid 90s in southern SB County with the downslope winds. Not quite as warm along the Ventura County coast but still well into the 80s. And the LA/Ventura Valleys should jump into the triple digits and as high as 107 in the warmest areas.

Models continue to show consistency with the northerly gradients through the week. Gradients will weaken some on Wednesday by a few millibars but still around -4MB Wed morning. Onshore gradients (LAX-DAG) do strengthen a bit on Wednesday which could bring some cooling across coastal areas, and the GFS shows light southerly flow with a weak eddy circulation to the west of LA County. This adds some uncertainty to the forecast but the most likely scenario is that coastal areas will either have little change or cool slightly with possible patchy dense fog right along the immediate coast, while valleys and other inland areas, including SLO County continue to warm as high pressure strengthens across the area. Places like Woodland Hills could hit 110 Wednesday and the Antelope Valley could see temps rivaling all time highs around 115.

Models indicate a continuing onshore trend Thu and Fri, though the GFS is still much stronger than the ECMWF. Either way, there should be some cooling Thu, though very minimal for the desert, and inland valleys and more so Friday.

Excessive Heat Watches were issued yesterday for a large portion of the forecast area starting Tuesday or Wednesday with varying ending dates, from Wednesday evening for coastal areas to Friday evening for interior areas. Areas that aren't in a heat watch may eventually need a heat advisory, particularly the Ventura Coast Tue/Wed with temps in the high 80s to low 90s away from the immediate coast.

The upper pattern remains conducive for the potential to draw in any mid level monsoonal moisture from Nrn Mexico and Arizona. Latest model guidance just showing variable high clouds over our forecast area. If storms do develop over Mexico or Arizona, will be monitoring as there is concern as added humidities and warmer overnight temperatures can add additional heat stress.

AVIATION. 12/1133Z.

At 08Z at KLAX, there was a surface based inversion at KLAX. The top of the inversion was around 1800 ft with a temp of 21 C.

Clear skies across the region today. Expect areas of low clouds on the Central Coast tonight and across coastal sections of L.A. County. Conds will be generally IFR to LIFR.

KLAX . Moderate to high confidence in TAF. There is a 20% chance that skies will remain clear tonight and conds will remain VFR.

KBUR . High confidence in 12Z TAF with CAVU conds thru the pd.

MARINE. 12/444 AM.

Across the outer waters, low-end Gale Force winds are expected to develop across the southern two outer waters zones (PZZ673/676) this morning, and across the northern zone (PZZ670) this afternoon. Confidence in this is low to moderate, as winds may remain in the Small Craft Advisory (SCA) category in most of these areas. SCA conds are expected late this evening thru tonight. Winds will likely be just below SCA levels Sun, then SCA conds are expected Sun night thru Wed. There is a 50% chance of Gale Force winds Tue thru Wed.

Across the inner waters N of Pt. Sal, SCA level NW winds are expected this afternoon and evening. There is a 40% chance of SCA level winds Sun afternoon and evening. SCA level winds are expected during the afternoon and evening hours Mon thru Wed. In the Santa Barbara Channel, SCA level W-NW winds are expected across western portions this afternoon/evening. There is a 30% chance of SCA level winds across western sections Sun afternoon and evening. SCA level winds are likely late Mon afternoon or evening thru Mon night and again Tue afternoon/evening.

Across the southern inner waters, SCA winds are not expected through Mon morning, then are likely late Mon afternoon into Monday night, and again Tue afternoon and evening, especially across western and northern sections. Patchy dense fog will affect the outer and norther waters today, then much of the waters tonight and Sun morning.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Excessive Heat Watch in effect from Tuesday morning through Friday evening for zones 36-44>46-52>54-59-88-547. (See LAXNPWLOX). Excessive Heat Watch in effect from Wednesday morning through Friday evening for zones 37-38-51. (See LAXNPWLOX). Excessive Heat Watch in effect from Tuesday morning through Wednesday evening for zones 39-41. (See LAXNPWLOX). Fire Weather Watch in effect from Monday evening through late Tuesday night for zones 239-252. (See LAXRFWLOX). PZ . Small Craft Advisory in effect from 3 PM this afternoon to 9 PM PDT this evening for zones 645-650. (See LAXMWWLOX). Small Craft Advisory in effect until 3 PM PDT this afternoon for zone 670. (See LAXMWWLOX). Gale Warning in effect from 3 PM this afternoon to 9 PM PDT this evening for zone 670. (See LAXMWWLOX). Gale Warning in effect until 9 PM PDT this evening for zones 673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (MON-FRI).

Gusty northerly winds will bring driving hazards and potentially critical fire weather conditions Monday night through Tuesday over southern Santa Barbara County. Very hot temperatures are expected next week, especially inland, peaking Tuesday and Wednesday, with heat- related illness concerns.



PUBLIC . Kaplan/MW AVIATION . DB MARINE . DB SYNOPSIS . Kaplan

weather.gov/losangeles


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CPXC1 20 mi41 min 13 G 16
46215 - Diablo Canyon, CA (076) 20 mi45 min 53°F3 ft
PSLC1 - 9412110 - Port San Luis, CA 20 mi59 min N 12 G 17 71°F 57°F1013.2 hPa
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 39 mi41 min NNW 19 G 21 1013.4 hPa

Wind History for Port San Luis, CA
(wind in knots)    EDIT      (on/off)   Help
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
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
Last
24hr
S4
S4
SE3
NW6
G9
NW14
G19
W24
W23
W20
W24
G29
W15
G22
W19
G24
W14
G19
S1
SW2
G6
S3
NE1
SW1
S2
S2
S3
N5
G15
S3
N5
G11
N13
G18
1 day
ago
N5
N9
G12
N13
G18
N10
G16
N14
G18
W20
G25
W24
W24
G29
W24
W17
G21
W17
W13
G19
NW13
G19
E2
G5
SW3
G6
S1
S3
--
--
NW2
S2
W2
NW2
NE2
2 days
ago
NE4
W13
G16
W13
G21
W9
G12
W20
W23
G28
W15
G25
SW10
G19
W6
G18
NW6
G17
W8
G18
NW4
G10
NW1
G7
W5
G8
E7
G11
SW3
NW5
W1
--
--
W1
NW1
--
N2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA15 mi45 minNNW 1310.00 miFair69°F41°F36%1012.4 hPa
Paso Robles Municipal Airport, CA16 mi48 minNE 310.00 miFair54°F41°F62%1014.9 hPa

Link to 5 minute data for KSBP

Wind History from SBP (wind in knots)
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
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
Last 24hrN16NW14NW12
G19
NW18NW19NW21
G28
NW23
G31
NW25NW20
G27
NW21
G26
NW17
G28
NW16
G24
NW20NW16NW13NW10NW9W43NW19
G24
NW14NW14NW9NW13
1 day agoNW15
G19
NW14NW13N14NW18NW22NW23
G29
NW27
G32
NW23
G29
NW26
G31
NW22
G26
NW21
G29
NW14
G20
NW12NW9NW10NW7W9NW9W5NW16
G21
NW13
G24
NW17
G23
NW18
G22
2 days agoW4W8NW55NW18NW18NW23
G28
NW21
G28
NW19
G25
NW20
G25
NW17
G23
NW15NW12NW9NW9NW4CalmCalmCalmW4CalmNW6NW10
G19
N15

Tide / Current Tables for Morro Beach, Estero Bay, California (2)
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Morro Beach
Click for Map
Sat -- 05:47 AM PDT     Sunrise
Sat -- 06:37 AM PDT     -0.47 feet Low Tide
Sat -- 07:29 AM PDT     Moonrise
Sat -- 01:28 PM PDT     3.16 feet High Tide
Sat -- 05:14 PM PDT     2.52 feet Low Tide
Sat -- 08:19 PM PDT     Sunset
Sat -- 10:36 PM PDT     Moonset
Sat -- 11:36 PM PDT     5.31 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
5.24.63.52.31.10.2-0.4-0.4-0.10.61.52.32.83.13.12.92.72.52.62.93.54.24.85.2

Tide / Current Tables for Morro Beach, Estero Bay, California
   EDIT      (on/off)   Help   One Week of Data
Morro Beach
Click for Map
Sat -- 05:47 AM PDT     Sunrise
Sat -- 06:37 AM PDT     -0.47 feet Low Tide
Sat -- 07:29 AM PDT     Moonrise
Sat -- 01:29 PM PDT     3.16 feet High Tide
Sat -- 05:14 PM PDT     2.52 feet Low Tide
Sat -- 08:19 PM PDT     Sunset
Sat -- 10:36 PM PDT     Moonset
Sat -- 11:36 PM PDT     5.30 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
5.24.63.52.31.10.2-0.4-0.4-0.10.61.52.32.83.13.12.92.72.52.62.93.54.24.85.2

Weather Map
       (on/off)   Help Weather Map
wmap_P
GEOS Local Image of Southwest    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.