The National Weather Service in San Diego has issued a heat advisory and warning, signaling continued hot weather conditions in the region through at least Wednesday. According to the NWS forecast, temperatures in valleys and mountains have a moderate to major heat risk, with the deserts facing major to extreme heat risk due to high pressure over the Southwest.
As for coastal areas, low clouds and fog may roll in during nights and mornings, which could be dense in parts. The NWS also notes that Highs today and Monday will experience little change in temperatures and will remain 5-8 degrees above normal. However, an influx of monsoonal moisture is expected to bring thunderstorm chances in the afternoons from Monday through Thursday, according to the Area Forecast Discussion.
The outlook brings about a mixed bag of conditions for San Diego and neighboring counties, as the potential for isolated showers materializes mainly over the San Bernardino Mountains today, with increased thunderstorm activity forecasted during mid-week. The NWS states, "As far as monsoon activity, moisture increases for Monday through Wednesday before beginning to decrease Thursday", hinting at some respite later in the week.
Meanwhile, beachgoers may need to watch out for minor tidal overflow. High tides are expected to peak at 6.8 ft Sunday night around 9:45 PM but gradually lower throughout the week. The NWS advises that marine conditions are not expected to be hazardous through Thursday.
As we navigate this heat wave, the NWS has extended the Excessive Heat Warnings and Heat Advisories through Wednesday evening for the inland and desert regions. The persistence of high temperatures, particularly at night near foothills and in the lower deserts, will only intensify the heat's effects. Stay hydrated, seek shade, and, if necessary, find cool shelters to stave off the scorching conditions.
