Thursday, August13, 2020
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Marine Weather and Tides
Bass Lake, CA

Version 3.4
NOTICE
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 6:13AMSunset 7:53PM Thursday August 13, 2020 11:11 AM PDT (18:11 UTC) Moonrise 12:56AMMoonset 3:41PM Illumination 27% 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
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7 Day Forecast for Marine Location Near Bass Lake, CA
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location: 37.29, -119.56     debug


Area Discussion for - San Joaquin Valley/Hanford, CA
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FXUS66 KHNX 131720 CCA AFDHNX

Area Forecast Discussion National Weather Service Hanford CA 1012 AM PDT Thu Aug 13 2020

UPDATE. Added thunderstorms through this afternoon for San Joaquin Valley through this afternoon south of Madera County and West Side Hills.

PREV DISCUSSION. /issued 358 AM PDT Thu Aug 13 2020/

SYNOPSIS . A northward influx of tropical moisture associated with the remnants of Elida will bring a threat of isolated thunderstorms to parts of the central California interior through this evening. Otherwise, dry weather will prevail during the next several days. Extremely hot temperatures can be expected Friday through Tuesday and possibly longer as a strong ridge of high pressure builds into the Golden State.

DISCUSSION . Tropical moisture is on its way northward early this morning. Its arrival into Kern county, as well as the southern San Joaquin Valley, will be accompanied by some showers along with perhaps some lightning and thunder. Doppler radars across southern California at this hour detect light to moderate precipitation over the coastal waters. The moisture is associated with the remnants of what was once Hurricane Elida. No doubt the cloudiness it brings will throw a monkey wrench into high temperatures over parts of the central California interior today. On the positive side, cloudiness will keep high temperatures below the century mark in parts of the valley and the desert today. On the negative side, any lightning strikes could spark new fires over our parched landscape. And then there's the humidity factor. The northward influx of tropical moisture will certainly bring a muggy feel to the air during the next 24 to 48 hours. It would not be a surprise if dewpoint temperatures reach 70 degrees or higher in some San Joaquin Valley locations during the short term periods. The best chance of measurable rain and thunderstorms will occur over the mountains and even include the coastal ranges west of I-5.

In the broader picture, this tropical moisture is being channeled northward between a weak area of low pressure over the Eastern Pacific and a strong upper level ridge of high pressure centered near the Arizona-New Mexico border. The models bring the primary slug of tropical moisture northward through midday. A second northward surge of tropical moisture is forecast to move into central California later today into tonight and linger through at least midday Friday. By Friday afternoon, the models aggressively build the upper level ridge westward into southern and central California. As this ridge builds into the Golden State, much of this tropical moisture will probably evaporate. So Friday should turn out to be a sunnier day over much of the CWA, and definitely hotter. Nonetheless, there may still be enough mid level moisture lurking to trigger isolated afternoon thunderstorms near the Sierra crest Friday.

Otherwise, this high pressure ridge means business. It's going to play a huge role in our pattern by this weekend and for much of next week as it amplifies and parks itself over the Great Basin. Regretfully, this strong high pressure ridge will bring a vicious and relentless spell of blistering heat for many many days beginning Friday. The extreme heat will elevate the fire danger over the higher elevations and air quality will likely worsen in the San Joaquin Valley with time. High temperatures could challenge records in some locations from Saturday through Monday, despite some high clouds. (Record highs for Fresno and Bakersfield have been provided below this discussion for easy reference.) The Excessive Heat Watch was upgraded to an Excessive Heat Warning accordingly for the West Side Hills, San Joaquin Valley and lower foothills as well as the Kern County desert for this period.

This high pressure ridge will not likely budge for many days, so it's possible that the Excessive Heat Warning might have to be extended into the middle of next week. Minimum temperatures will also be quite warm in this pattern with thermometer readings staying above 80 degrees in the urban areas of the valley and in parts of the Kern county desert.

Although the strength of this ridge will minimize or cap afternoon convection over the Sierra, a pop up thunderstorm or two cannot be ruled out any afternoon near the crest from Saturday through Tuesday. Additionally, please think twice if you want to seek cooling relief in any of the rivers. The rivers have proven many times over already this year that they are potentially dangerous places. Their cold, swift currents have carried a number of swimmers to their death and there've been far more numerous water rescues of the lucky ones who've survived the river's swift waters. Please don't become a sad statistic. Stay cool in an air conditioned home during this upcoming heat wave. If you have to be outdoors, stay out of the sun, especially during the hottest time of the day, slather on the sunscreen, wear a protective hat and light colored, loose-fitting clothing.

HIGH TEMPERATURE RECORDS AUG 15 AUG 16 AUG 17 FRESNO 109/1920 110/1920 111/1892 BAKERSFIELD 110/1906 109/1920 109/2015

AVIATION . Isolated thunderstorms are possible over the San Joaquin Valley and in the mountains through 03z Friday. VFR conditions will prevail elsewhere over the central California interior during the next 24 hours.

AIR QUALITY ISSUES . On Thursday August 13 2020 . Unhealthy for sensitive groups in Fresno and Kern Counties and Sequoia National Park and Forest. Further information is available at Valleyair.org

CERTAINTY .

The level of certainty for days 1 and 2 is medium. The level of certainty for days 3 through 7 is high.

Certainty levels include low . medium . and high. Please visit www.weather.gov/hnx/certainty.html for additional information an/or to provide feedback.

HNX WATCHES/WARNINGS/ADVISORIES. Excessive Heat Warning from noon Friday to 9 PM PDT Monday for CAZ179>191-198-199.

update . ab public . Durfee aviation . Durfee

weather.gov/hanford


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Madera Municipal Airport, CA36 mi18 minWSW 710.00 miFair85°F55°F37%1013.7 hPa

Link to 5 minute data for KMAE

Wind History from MAE (wind in knots)
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Last 24hrW64NW7W7NW7NW6NW7NW6W6NW6NW6NW4CalmW3W4W3CalmCalmCalmCalmCalmS3SW6W7
1 day ago556N8NW7W7W9NW8NW6W7NW7NW7NW7NW6NW3W6NW5NW4W5CalmNW4CalmCalm4
2 days ago4W66W7W9NW8NW9NW7NW9W8NW7NW8NW7W6NW6W7NW5NW4NE3CalmCalmCalm5W7

Tide / Current Tables for
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Tide / Current Tables for
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Weather Map
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GEOS Local Image of CentralWestCoast    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
Wind Forecast for San Joaquin Valley/Hanford, CA (14,3,4,5)
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Ground Weather Radar Station San Joaquin Valley, CA
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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.