textproduct: San Joaquin Valley

KEY MESSAGES

1. Lake Wind Advisory in effect through Thursday for West Side Coastal Mountains north of 198 and San Luis Reservoir.

2. Lake Wind Advisory in effect from 4 PM until 10 PM for Kern River Valley, including Lake Isabella.

3. Dry and breezy conditions create elevated fire risk this week, especially in the Mojave Desert.

4. Near-normal temperatures across the area.

5. Practice safety around lakes, rivers and streams, as water is still running cold.

DISCUSSION

Lake Wind Advisory in effect through Thursday for West Side Coastal Mountains north of 198 and San Luis Reservoir. West winds of 15-30 mph with gusts to 45 mph expected. Windy conditions expected to continue into the weekend and will likely necessitate new wind products.

Lake Wind Advisory in effect from 4 PM until 10 PM for Kern River Valley, including Lake Isabella. Northwest winds of 15-20 mph with gusts to 30 mph expected.

An upper-level trough continues to moderate temperatures, keeping the area at or just below normal for the next few days. The trough has caused pockets of windy conditions across the area necessitating the issuance of several wind products. Further wind products will be likely in the next few days. Daily minimum relative humidities are expected to be 17-22% across the Valley and 7-12% in the desert. The dry air and strong winds will create an elevated fire risk throughout the week, particularly in eastern Kern and southeastern Tulare Counties.

While the trough will remain relatively stationary, it will gradually weaken as the week progresses. We should see a slight warmup over the weekend, with Valley temperatures in the mid and upper 90s on Saturday. Looking farther ahead, a ridge is likely to build over the southwestern US, which should lead to a steady return to warmer temperatures.

Water temperatures are still in the upper 60s and low 70s and much colder near water flowing from higher elevations. Exercise cold water safety at all times.

We have had several fires over the last few days. As we near Independence Day, please follow all regulations involving fireworks and exercise extreme caution.

AVIATION

VFR conditions expected across the area for the next 24 hours. Windy conditions at and near KBFL beginning at 21Z, with northwest winds at 12 kts, gusting to 20 kts.

AIR QUALITY ISSUES

None.

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

Lake Wind Advisory until 11 PM PDT Thursday for CAZ300.

Lake Wind Advisory until 10 PM PDT Tuesday for CAZ332.