textproduct: San Joaquin Valley
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
1. A Wind Advisory has been issued through Monday evening due to expected gusty winds along the Mojave Slopes and into the Desert.
2. A low pressure system brings minor chances of precipitation over the Sierra Nevada through Monday evening. Any accumulation will be minimal.
3. A second low pressure system approaches the area on Wednesday, bringing wind, lower temperatures, and increased fire weather potential.
DISCUSSION
A low pressure system north of the area is bringing minor (10-20%) chances of precipitation over the northern Sierra Nevadas today, while the Valley should enjoy pleasant high temperatures in the mid-to-upper 60s today. While the low pressure and winds will help to ventilate the area, abundant surface-level moisture keeps a minor fog risk in the Valley, with chances of visibility below a quarter-mile hovering at approximately 15% Tuesday and Wednesday mornings.
Models are in good agreement that a more potent low pressure system will approach the area late Wednesday into early Thursday. However, low PWAT values will limit precipitation chances, making this a mostly wind event. With the dry air and increased wind, fire weather risk will increase toward the weekend in the Mojave Desert Slopes and south toward Tehachapi. Northwest flow over the entire region will bring high temperatures down to the low-to-mid 60s by Thursday and lows in the upper 30s and lows 40 into Friday before a gradual warmup over the weekend.
AVIATION
VFR conditions will mostly prevail across the Central California interior for the next 24 hours. However, MVFR conditions are possible in the Valley from approximately 11-16Z Tuesday.
AIR QUALITY ISSUES
There are no air quality alerts currently active.
CERTAINTY
The level of certainty for days 1 and 2 is high. The level of certainty for days 3 through 7 is medium.
Certainty levels include low...medium...and high. Please visit www.weather.gov/hnx/certainty.html for additional information and/or to provide feedback.
HNX WATCHES/WARNINGS/ADVISORIES
Wind Advisory until 10 PM PST this evening for CAZ337>339.
IMPORTANT This is an independent project and has no affiliation with the National Weather Service or any other agency. Do not rely on this website for emergency or critical information: please visit weather.gov for the most accurate and up-to-date information available.
textproduct.us is built and maintained by Joshua Thayer.