Moisture will continue to stream in from the south overnight with periods of light rain possible. Isolated, embedded thunderstorms are also possible. Rainfall will generally be light. Then, we’ll be talking about the heat as the ridge centers in over the west, squishing the marine layer, and keeping high temperatures WELL ABOVE normal for the next week. The long duration of this heat event will likely take a toll on people sensitive to warm/hot weather. Another pulse of moisture out of the weekend may yield future rain chances as well. Stay tuned.
Overnight: Mostly cloudy with isolated showers or thundershowers possible. Warm and muggy, with lows in the 60s for most areas, 70s up in the hills.
Friday: Mostly cloudy early and very mild with lows in the upper 50s to low 60s. Then, becoming mostly sunny and hot with coastal highs in the 70s to low 80s and widespread 90s-100s inland. Windy for inland valleys in the afternoon and early evening.
… from the National Weather Service: A long duration heat wave will impact the region from Friday through at least Wednesday of next week. Excessive heat will target interior locations for the full duration of the heat event, with persistent daily afternoon highs in the upper 90s to mid 100s across the interior. Drastic temperature differences will exist from the coast to the interior and communities just a few to several miles inland may experience rapid warming into the upper 80s to 90s on individual days. In addition, minimal overnight relief is expected for locations above 1000 feet where warm overnight lows will hover in the upper 60s to upper 70s. Due to the long duration of this event, accumulating heat stress will be a significant impact for the general public, pets, vegetation, and livestock across the region, particularly those sensitive to the heat. Relatively cooler conditions are expected to persist near the immediate coast with highs in the 70s to low 80s.
***EXCESSIVE HEAT WARNING***
The National Weather Service has issued an Excessive Heat Warning for…
- the Santa Clara Valley
- the Diablo Range
- the higher valleys of San Benito County
- the Gabilan Range and Cholame Hills
- the Santa Lucia Range and Los Padres National Forest
- the southern valleys in Monterey County including the southern Salinas Valley
… from 11AM Friday through 9PM Wednesday!
Long duration, excessively hot conditions with daytime highs in the upper 90s to mid-100s. The hottest locations may approach 110ºF.
Extreme heat will significantly increase the potential for heat related illnesses, particularly due to the long duration of the event.
The heat will initially peak on Friday with a few degree easing in the temperatures through the weekend. A second peak in the heat arrives Tuesday into Wednesday of next week.
for the Santa Cruz Mountains
- lower Salinas Valley
- Carmel Valley/Toro Valley
- lower valleys of San Benito County including Hollister & San Juan Bautista…
from 11AM until 9PM Friday
Elevated heat will increase the potential for heat related illnesses, particularly among vulnerable populations and those working outdoors or in areas without air conditioning.
Friday is forecast to be the warmest day. Additional heat advisories may be warranted throughout the duration of the event.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles
under any circumstances.
Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Extended: High clouds will continue to stream in from the south through the weekend. We’ll be watching another moist plume on Monday/Tuesday of next week. With strong high pressure in control, high temperatures will remain 5-15ºF above normal through the next week. It may also feel a bit muggy at times.
This week's normal temperatures:
-The outlook from the Climate Prediction Center for August 21st – 27th calls for the likelihood of ABOVE normal temperatures and near normal precipitation. Note: Little to no precipitation typically falls this time of year.
-El Niño/La Niña STATUS: Neutral
-Forecast into Winter: La Niña Watch
-Area drought status: Moderate drought for much of Santa Cruz & Santa Clara Counties, Abnormally dry on the east shore of the bay into San Benito County. No drought classification for much of Monterey County outside of the Gabilan Range.