Extreme Weather Patterns: Record Heat in the West and a Cold Shift in the East

As we plunge deeper into March, regions across the West are experiencing a remarkable warm spell reminiscent of mid-summer, while the East faces a stark contrast with plummeting temperatures. A significant weather pattern transition is on the horizon, causing temperatures in the Southwest to break records, while the East readies itself for a jarring temperature fluctuation.

Record Heat Dominates the West

Unseasonably high temperatures are expected to blanket the West, threatening numerous temperature records. This unusual heatwave is projected to impact southern and central California, extending its reach eastward into Texas, with parts of Colorado also experiencing above-average warmth.

Cities such as Los Angeles, San Diego, Phoenix, and Albuquerque are likely to see daily records broken over the coming week.

The temperature surge will continue daily, potentially pushing areas as far north as San Jose and Redding to experience highs around 90°F by early next week. For the Desert Southwest, this March heatwave is poised to be unprecedented.

Specifically, Phoenix is forecasted to hit over 100°F for multiple days, a phenomenon typically reserved for early May. The city’s earliest recorded 100°F day was on March 26, 1988, and this current wave could surpass that by more than a week.

• California: 107°F at Mecca on March 21, 2004
• Arizona: 104°F at Yuma on March 21, 2004
• Nevada: 100°F at Laughlin on March 17, 2007

All signs indicate that this heat will persist, with the conducive weather pattern remaining in place across much of the West well into next weekend.

Temperature Fluctuations Ahead for the East

In stark contrast, the East is set to feel temperatures at or above average through the weekend, only to be jolted by a cold front that will sweep in starting Monday. This shift will drive colder air southward from Canada, first hitting the Rockies and Plains before extending its reach throughout the South and East by Tuesday. A second cold front is also anticipated to arrive Friday into Saturday.

The East should brace for a week of fluctuating temperatures, navigating between brief warm spells followed by sudden drops.

Notable Warmth Leading into March

Interestingly, before the calendar flipped to March, Phoenix had already broken or tied daily record highs for four consecutive days, all within the 90s. Additionally, a reporting station in Deep South Texas noted what could be the hottest winter temperature in the nation.

As March commenced, record temperatures continued to pile up, especially in the Southern Plains and Southeast. The warmth then spread toward the eastern half of the country, marking the earliest 80°F day in New York City in recorded history.

The previous week also saw notable highs, with Santa Ana, California, reaching an astonishing 97°F, setting a new record. Other areas in Southwestern California, including Chula Vista and Ramona, experienced similar records, primarily from 2007.

This trend of setting daily temperature records appears unlikely to abate anytime soon.