Very Strong Ridge of High Pressure To Bring Heatwave To Inland Southern California With 120+ for Low Deserts As Well

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A very strong 600m upper ridge of high pressure that marks the ‘heatwave’ before the monsoon begins in Arizona will develop over the the Arizona/New Mexico border by Friday.  This will push temperatures through 115F+ in the low deserts and with the weekend moving along, temperatures may even breach the 120F range, including Imperial Valley through the entire Colorado River Valley areas with 110-115 for Las Vegas.

As for the monsoon.  These larger heatwaves usually indicate the final build of the four corners ridge as the jet stream moves way north into Canada.  It also allows for less shear in the Eastern Pacific Basin  Less shear means the development of Eastern Pacific Ocean Hurricanes will finally begin and with that happening we will see moisture push up from Mexico after Mid-July, finally showing with the full the Arizona Monsoon after that.  As for our area in Southern California, we will see moisture shots at times this month, however a full deep monsoon blast has yet to be seen unless we start seeing more activity down in the tropics.

As per the July 2020 forecast issued a week ago, July 2020 will remain above average in temperatures as we start our hot summer to come.

Use the models below for this weekend’s heat index

5. Heat Stroke Certain After 10 minutes of exposure. You will die outside in this as it is near low oven temperatures that will slowly cook you. You may even have a hint of burnt human skin that only Jeffrey Dahmer would like. Water is a must and so is salt to replenish the water lost in the body. Do not add pepper.

4. Dangerous. If you want to hike in this, you must have a lot of water. Most people think that they have enough water but they do not. This is the level at which kills a lot of people due to that reason. Working outside is not recommended. You do not want to be playing hot potato with your feet on the sidewalk in this level.

3. Great discomfort. Do not exert yourself on a level three. Drink plenty of water, and hiking is not recommended without proper knowledge and supplies.

2. Some discomfort. Be cautious outside when working and drink plenty of water.

1. Very little discomfort, however long periods of exposure could bring heat exhaustion.

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