Inland Heat, Coastal Comfort
Excessive heat and critical fire danger will continue for inland valleys and the higher terrain into the weekend. The center of the massive ridge of high pressure that has been approaching for days has finally reached the California coast and will move to our north on Friday. Temperatures should jump up a few more degrees with deep easterly flow aloft, though at the surface we’ll still have a slight sea breeze to keep coastal areas relatively cool. Maximum temperatures are expected Saturday before a slow cool-down into next week. Heat has cumulative effects, so make sure you are continuing to stay hydrated and cool.
AIR QUALITY: Pockets of unhealthy air quality around inland cities were fireworks were common—mainly moderate back toward the coast.
***RED FLAG WARNING***
…for the Santa Cruz Mountains in effect EXTENDED to 9PM Saturday
North-northeast winds are expected to develop this evening across the ridges of North Bay and East Bay, Santa Cruz Mountains, along with the Marin and Sonoma Coastal Ranges. Dry, offshore winds will persist Monday evening through Tuesday evening over all these areas, and continue through Wednesday afternoon across the North Bay interior mountains, which will result in elevated fire weather concerns. Gusts of 30 to 40 mph will be possible across ridgetops and higher peaks.
*Northwest 5 to 10 mph with gusts up to 25 mph.
*Relative Humidity as low as 10 percent.
* Temperatures up to 107.
*Critical fire weather conditions. Increased chance for fire starts in dry, open grasses. Outdoor burning and especially fireworks are not recommended.
A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.
***EXCESSIVE HEAT WARNING***
… for the mountains and higher elevation valleys (above 250ft) of Monterey County, the mountains and higher elevations valleys (above 500ft) of San Benito County, the Santa Cruz Mountains, and the KION coverage area in Santa Clara County in effect NOW extended until 11PM Wednesday, July 10th.
-Dangerously hot conditions with temperatures in the upper 90s to 115F expected. Limited overnight relief with low temperatures in the mid 60s to low 80s. Resultant widespread Major HeatRisk, with areas of Extreme HeatRisk.
Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure. Without effective cooling and/or adequate hydration, heat-related illnesses including heat stroke will be a risk to everyone. Overnight lows will warm as well leading to poor relief from the heat specifically in elevated terrain and interior areas.
*An exceptionally dangerous situation is expected to unfold during this potentially historic and deadly heat event. Several days of temperatures well above normal will lead to compounding effects among people and infrastructure, with the possibility of numerous heat related fatalities. It cannot be stressed enough that while one day at these temperatures may be manageable for some, an event of this scale, magnitude, and longevity will likely rival anything we've seen in the last 18 years. Heat is the number one weather related killer in the United States. By this weekend, it is VERY LIKELY that we add to that statistic if preparations are not taken seriously.
Drink plenty of fluids, stay cool, stay out of the sun, and check up on relatives and neighbors.
Beat the heat and check the backseat! Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you see symptoms of heat
exhaustion and/or heat stroke.
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.
**HEAT ADVISORY**
…for the lower elevations of Santa Cruz County and for the lower elevation inland valleys of Monterey & San Benito Counties in effect NOW extended until 11PM Wednesday, July 10th.
*Temperatures in the 80s to mid 90s
*Those sensitive to heat, such as the homeless, elderly, children, and pets will be at risk for heat-related illnesses. Those without effective cooling and/or adequate hydration will be at the greatest risk.
*An exceptionally dangerous situation is expected to unfold over the next week as we enter a potentially historic and deadly heat event for inland areas. Several days of temperatures well above normal will lead to compounding effects among people and infrastructure, with the possibility of numerous heat related fatalities. It cannot be stressed enough that while one day at these temperatures may be manageable for some, an event of this scale, magnitude, and longevity will likely rival anything we've seen in the last 18 years. Heat is the number one weather related killer in the United States. By this weekend, it is VERY LIKELY that we add to that statistic if preparations are not taken seriously..
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Beat the heat and check the backseat! Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
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.
Overnight: Patchy low clouds and fog along the coast and perhaps just into nearby valleys. Lows in the 50s for most coastal areas and inland valleys with 60s for higher valleys and 70s up in the hills.
Friday: Mostly sunny and warmer with coastal highs in the upper 60s to mid 80s and inland highs ranging from the upper 80s to around 114ºF. Patchy fog possible near the coast. Breezy westerly onshore winds becoming windy up-valleys late in the day.
***RED FLAG WARNING***…for the southern valleys and higher terrain of Monterey County and the higher terrain and valleys of San Benito County in effect from 5AM Friday through 9PM Saturday.
The Fire Weather Watch for Monterey and San Benito counties has been upgraded to a Red Flag Warning for 5 AM Friday through 9 PM Saturday. While the winds are marginal, this decision was made due to a combination of continued very low RH in the teens, very dry fuels, and the 4th of July holiday. Also, gusts up to 25 mph will be possible across ridgetops and higher peaks. Fuels continue to cure and will see no relief through this weekend. In fact, 10 and 100 hour fuels are near historic levels in the North Bay in regard to the energy release component going into the weekend. The same fuels in the Diablo Range and Santa Cruz Mtns aren't far behind.
The Fire Weather Watch is no longer in effect.
*Northwest winds 10 to 15 mph with gusts up to 25 mph.
*Relative humidity as low as 7 percent.
* Temperatures up to 112.
*Critical fire weather conditions. Increased chance for fire starts in dry, open grasses. Outdoor burning and especially fireworks are not recommended.
A Red Flag Warning means that critical fire weather conditions are either occurring now...or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
Saturday: Patchy AM fog on the coast, then sunny all around. Warmer with coastal highs in the upper 60s to upper 80s and 90s to around 117ºF inland. Breezy westerly onshore winds becoming windy up-valleys late in the day.
Extended: Temperatures begin to cool slightly on Sunday, but only by a couple of degrees! The cooling trend will continue day by day, a few degrees at a time into next week. Low clouds are likely to return to the coast in a more widespread fashion staring on Monday.
*Note: Any alerts from the National Weather Service in Monterey will be noted in italics above. Alerts may be edited for brevity or local clarification (in parenthesis).
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This week's normal temperatures:
--COASTAL CITIES--
LOW: 53ºF
HIGH: 68ºF
--INLAND CITIES--
LOW: 51ºF
HIGH: 84ºF
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-The outlook from the Climate Prediction Center for July 12th – 18th calls for the likelihood of ABOVE normal temperatures and near normal* precipitation.
*Note: little to no precipitation typically falls this time of year
- ENSO (El Niño/La Niña) STATUS: La Niña Watch
- ENSO Forecast: Transition to La Niña by late summer.
- Area drought status: Currently drought-free
- Monterey Bay Sea Surface Temperature* as of July 5th : 58.6ºF
(Historic June AVG: 58.4ºF) -- *average of three buoys
