textproduct: San Joaquin Valley

KEY MESSAGES

1. Lake Wind Advisory until 1 AM PDT Wednesday for San Luis Reservoir.

2. The warming temperatures will continue through late this week, becoming triple digits in some parts of the Valley tomorrow.

3. Hot and dry conditions this week will create increased fire risk across the region.

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

DISCUSSION

Windy conditions continue at San Luis Reservoir, where a Lake Wind Advisory is in effect until 1 AM Wednesday. Current guidance hints at further wind products being likely across the area this week.

The heat continues, with much of the area under moderate heat risk tomorrow, with the Valley expected to see high temperatures in the upper 90s and low 100s. Thursday looks to be quite similar. By early Friday, a decently strong trough will approach the Pacific Northwest. In addition to stopping subsidence from the ridge currently over the area, this will bring strong northwesterly flow. As such, high temperatures will likely dip to climatological normals on Friday before dropping below normal over the weekend. While temperatures will be more comfortable, the increased winds coupled with continued dry conditions will result in increased fire danger beginning Thursday. This risk will apply across the entire area, but will be most pronounced in eastern Kern and Tulare Counties. A 5-10% risk of lightning in the upper Sierras Wednesday, Friday, and Sunday will further compound the risk.

As the heat continues, be sure to take appropriate precautions and check in on and make arrangements for vulnerable people and animals. Brachycephalic (short-nose) breeds will have particular difficulties with the heat and should be kept indoors.

If driving or boating in an area with a Wind Advisory, take appropriate precautions.

Water temperatures are still in the upper 60s 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. Stronger winds at 12 kts with gusts to 20 kts expected at and near KBFL beginning 20Z on the 24th.

AIR QUALITY ISSUES

HNX AFD authors - edit this section manually UFN

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 1 AM PDT Wednesday for CAZ300.