Weather Forecast for Thursday, Oct. 29

That's a good indication that changes are on the way. We are watching a storm system develop and potentially give us unfortunately rain for Halloween weekend. Here's a look at those headlines. Temperatures are trending lower. So today I'll call it mild considering that our temperatures will be below average under mostly cloudy conditions and we'll even put in a 10% chance of a sporadic shower in addition to the cloud cover. But the bulk of that rain is set to move in sometime late Saturday. We've increased the chance of a to now 70 for Halloween Halloween evening and into Sunday morning and some of that residual shower could extend into Sunday afternoon coastal flood alerts are still in effect if anything we have now extended that advisory into Friday for all our coastal areas temperatures for downtown LA about 74 degrees and that is cooler than average typically we should be right around 77 degrees sunrise not until after 7 and sunset at 6:03 p.m. this evening. Don't forget we have daylight saving that's coming to an end on Sunday so you'll get that extra hour of sleep. Here's a look at our future cast. You can see how this plume of moisture will eventually seep in. It's grabbing a hold of that flow courtesy of an area of low pressure that's also swinging through and into Sunday we go. Light to moderate and heavy at times is possible, so make sure you plan ahead for this possibility of rainfall, especially if you have Halloween parties or you're taking the kids out trick-or-treating. Have that umbrella ready. Maybe bring out the galoshes, the rain boots, and be prepared during trick-or-treating hours that the rain's going to stick around. And taking a look at our coastal advisories, again extended into Friday afternoon, warnings are still in effect for Orange County and San Diego. Near record-breaking high tides, We've already seen it in areas of San Pedro as well as areas of San Diego where high tides have broken records. Tidal overflow and street closures and beach erosion are still expected. So we've got team coverage there for you. And what is causing this abnormally high tide? We have a couple elements in place. It is now confirmed that we are in a very strong El Nino event. Currently, temperatures are sitting at 2.5 degrees Celsius above normal. And in addition to that, in a El Nino year, Kelvin waves develop and propagate towards the Americas, splinter off a portion of that heading into North America and along our coast. And it's simply just a surge of warmer than average high tide, or should I say, a pulse of warm water, elevating coastal waters above normal to about six inches to even a foot. Due to heat expansion, when water is heated, it expands, and that's what's elevating these conditions. We've got king tides still in effect. We have a couple of rounds coming into November during Thanksgiving week and Christmas week as well, so a couple things that we have to bring to your attention so you can prepare for those upcoming events. We've got 72 degrees for the coast today, rain opportunities, Halloween with the rain chances, temperatures right around 74 degrees under mostly cloudy conditions, and we've got after the rain, drier conditions moving into next week. Halloween day for valleys. We are looking at again rain opportunities for Southern California.