Heat Emergency Development Southwest U.S June 19
Friday, June 6, 2025, 12:00 AM PDT:
The most recent GFS 0z, 12, EU 1 continues to advertise a building heat event starting 5AM June 16- 21, 2025. An impressive 594 to 597 DM high-pressure dome continues to trend for California, Arizona, Nevada, Utah, Colorado, and the Baja peninsula.
Climatology for our region mid June to July standards is above normal averages by 15 - 25 degrees warmer than average. This places this upcoming potential heatwave records with alinement in September 2020, September 2024, and June 2015. So we only have about one more weekend left of relatively cool weather until about June 14, 2025 after that everything is going to change in such a rapid concession where we go from one extreme to the next.
I’m monitoring this potentially serious situation that is evolving for Southern California as temperatures could easily top out at 110F - 124F range for all valleys and desert locations across all of California, Nevada, and Arizona. This event could also impact power grid demands, and yes, even cause more wildfires due to extreme heat variability as well as very intense heat drying up, vegetation in less than six hours.
The amount of humidity introduced into this notable heatwave event is still being looked at closely the more extreme the heat and humidity combination is the more dangerous this event becomes and becomes an oppressive heat event for the entire Southwest U.S. in the next 42 to 72 hours.
I’ll continue to monitor this developing situation. Hopefully, things tend to fluctuate, but it looks like this is a moderate confidence of a real serious heat event starting to show early promise. #CAwx #heatwave #weatherreport #emergency
As we face a significant heatwave from June 16 to June 21, 2025, meteorological data indicates high pressure building up with temperature anomalies ranging from 15 to 25 degrees above average. The projected temperatures might reach as high as 124°F in desert areas, which poses a risk for power grid overload due to increased energy demand for cooling. Additionally, high temperatures can rapidly dry vegetation, significantly raising wildfire threats across California, Nevada, and Arizona. Humidity levels, which are being carefully monitored, will play a crucial role. Higher humidity combined with extreme heat can create dangerously oppressive conditions for residents. Local authorities are on alert to manage this meteorological event, and families should prepare for potential heat-related emergencies. Staying hydrated and indoors during peak heat hours can mitigate health risks. Continued updates will be crucial as we assess the situation's development in the coming days.
I just bought my first air conditioner. Thx! I will be better prepared.