Friday, December4, 2020
Privacy Policy
L-36.com

Marine Weather and Tides
Desert Center, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:33AMSunset 4:35PM Friday December 4, 2020 4:32 PM PST (00:32 UTC) Moonrise 9:31PMMoonset 11:17AM Illumination 76% Phase: Waning Gibbous; Moon at 20 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 Desert Center, CA
   Hourly   EDIT   Help
location: 33.86, -115.76     debug


Area Discussion for - Phoenix, AZ
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS65 KPSR 042333 AAB AFDPSR

Area Forecast Discussion National Weather Service Phoenix AZ 433 PM MST Fri Dec 4 2020

UPDATE. Updated Aviation Discussion.

SYNOPSIS. A cool air mass over the region will continue to bring chilly overnight and early morning conditions through Saturday with low temperatures dipping into the 30s over a good portion of the lower deserts. A warming trend will then take hold this weekend into early next week bringing high temperatures back to above normal levels starting Sunday. Highs are likely to top out in the middle to upper 70s during the first half of next week before a potential weather system enters the picture late next week likely dropping temperatures back to near normal with a slight chance of showers over high terrain areas.

DISCUSSION. A high amplitude ridge remains centered over southern Canada with its southern periphery extending south into northern Arizona. Meanwhile, an upper level low continues to track slowly southeast over Sonora. In the wake of this departing system, Arizona remains under the influence of a very dry and relatively cool air mass (near the surface). Upper levels have warmed considerably compared to yesterday, but little to none of this warming will be realized in the short term because of the aforementioned cooler air remaining near the surface.

Low temperatures this morning were in the 30s most locations, with many colder valleys recording a freeze. The coldest lower desert areas are still expected to dip to around freezing again Saturday morning, particularly in La Paz and Yuma Counties, with localized Freeze Warnings in place for those locations. The upper level ridge to our northwest will slowly work its way into our region over the next couple days and this will allow for some gradual warming bringing our highs from the 65-70 degree range today to the lower 70s by Sunday, and perhaps close to 80 by Tuesday. Cloud cover will be extremely minimal the next few days.

The upper level ridge over the western US will weaken somewhat and allow a weak upper level low to sneak through its southwestern side over the weekend. This will result in a closed low developing and moving south and west of the area by the middle of next week. There remains considerable uncertainty in the track and strength of this feature, as is common with closed lows, but there is relatively good agreement in this general progression. In fact, each cluster in the WPC cluster analysis shows this occurring in some form. There is also relatively good agreement that this low will tap into subtropical moisture as it begins to eject northeast towards the southwest US the middle of next week in advance of an approaching west coast trough. Ensemble members which stall this low for longer generally appear more favorable for rainfall in the Phoenix CWA (currently about half of the ensemble members shows this in some capacity), whereas those that eject it more quickly result in wetter conditions further to the east. The uncertainty in the track and timing is primarily related to uncertainties about the strength and amplitude of the ridge over the northern Rockies and the aforementioned advancing trough along the west coast. These details should become more clear in the coming days, but in the meantime model shifts in the track of the low will remain possible. At a minimum, it does appear likely that we will see lowering temperatures and increasing cloud cover the second half of next week, regardless of whether rainfall occurs in the area.

AVIATION. Updated at 2333Z.

South-Central Arizona including KPHX, KIWA, KSDL, and KDVT: Southeast California/Southwest Arizona including KIPL and KBLH:

No aviation weather concerns expected. Light, diurnal winds will prevail through Saturday under clear skies. Wind speeds at all sites should remain near 6 kts or less. Extended periods of light/variable winds are likely to occur as well.

FIRE WEATHER. Sunday through Thursday: Anticipate lighter winds from Sunday into next week favoring mostly typical diurnal patterns. Morning temperatures will remain near normal. Afternoon temperatures will be above normal, rising from the low 70s Sunday into the upper 70s by the middle of next week for most lower desert locations. Minimum humidities will be in the 10-20% range for most locations with overnight recoveries in the 25-45% range. A potential weather system late next week may bring increasing moisture and rain chances by Thursday.

SPOTTER INFORMATION STATEMENT. Spotters should follow standard reporting procedures.

PSR WATCHES/WARNINGS/ADVISORIES. AZ . Freeze Warning from midnight tonight to 8 AM MST Saturday for AZZ530-533-536.

CA . Freeze Warning from 11 PM this evening to 7 AM PST Saturday for CAZ569.



DISCUSSION . Hodges/Kuhlman AVIATION . Percha/Hodges/Hirsch FIRE WEATHER . Kuhlman


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
Palm Springs, Jacqueline Cochran Regional Airport, CA27 mi41 minSSE 410.00 miFair69°F18°F14%1020.6 hPa

Link to 5 minute data for KTRM

Wind History from TRM (wind in knots)
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
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
Last 24hrW4N3N6N8S3N7N6N4NW3N5N8NW4NW5CalmS4CalmCalmN3Calm4CalmSE4CalmSE4
1 day agoCalmNE8CalmCalmN3NW5N5N7NE10
G16
W3N6N4NW4N5NW4CalmN3NW6NW6NW4W6NW7W7NW5
2 days agoCalmCalmN3N4NW4N3CalmN3CalmCalmN3W4CalmNW4N5NW4W6CalmSE4N3E5W6W5Calm

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 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Ground Weather Radar Station San Diego, CA
   (on/off)   Help
weather_mapweather_map weather_map


Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply anyway.
Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.