Unseasonably and dangerous heat currently has a firm grip on the southwest United States. Cities from Los Angeles to Phoenix and Las Vegas are under Extreme Heat alerts as a strong high-pressure ridge, or "heat dome" has locked itself over the western U.S.
How is this relevant to our forecast? The same dome of high pressure is expected to weaken and even push eastward over the coming days. This will help drive a noticeable warm up here at home, arriving just in time for the first weekend of spring.
Friday will be warm with highs in the upper 50s. We still have a minor uncertainty with Friday's warm up as we'll have to see how things trend with the timing of the first of two cold fronts. Behind said front, we then see surface flow turn to the south and southwest ahead of an even stronger frontal boundary.
This, along with a decent amount of sun will allow temperatures to surge into the upper 60s Saturday afternoon. Sunday's warm up also depends on the timing of the cold front as one model (the European model) was quicker with the frontal passage. This displaced the milder air to our south, leaving afternoon temperatures in the 40s. However, the American model left some room for highs to briefly reach the 50s before cooling overnight into Monday. Next week starts off cooler with afternoon highs in the low to mid 40s.
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