August 12, 2020 at 10:36 am

Details: Lightning Risk Overnight into Thursday Los Angeles North and Westward; Then A Strong Inland Heatwave; Heat Warnings Issued


Moisture from Hurricane ELIDA is making its way into Southern California overnight tonight and this combined with some upper lifting will bring the risk of fire starting dry lightning hazards for Los Angeles north and westward then and through some of Thursday.  A heatwave is expected Friday into the Weekend so for the detailed areas, read on …

The moisture is well south of the area right now and nothing will be expected today, however overnight tonight, well after midnight, I am projecting the increase in mid-level moisture across Southern California.  Moisture is the first key to the development of convective activity and the second key would be the elevated mid-level instability that will also be available.  The last one is the strong positive vorticity advection (PVA) in the mid/upper levels and this is aiming somewhere Los Angeles westward through Ventura/Santa Barbara then.  It is tough to pinpoint where this might be but the general idea of it is a miss for San Diego and the Inland Empire with most of the activity somewhere between a line from Los Angeles and Santa Barbara proper.  This will spread northward through Thursday into Kern as well so I’ve highlighted the entire western forecast zone in the red-shade for dry lightning potential.  This will be a short-lived event, but could spark more fires.

As for the rest of us, the heat is on starting Friday.  As you supporters on Facebook saw in my last update due to me being sick, the update stated August would have above average temperatures and this is just one of a few heatwaves we will have, this next one around August 20-21st in the region.  Use the maps below and they key provided to find out what level you are in from my 1-5 scale.

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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