Massive Cold Front to Sweep 25+ States with Snow, Severe Storms, and Flooding

Key facts

• Cold front stretches from Maine to Texas, impacting over 25 states.
• NOAA Storm Prediction Center issues Level 2 of 5 severe storm risk for parts of North Texas, Oklahoma, Arkansas, Missouri, and Memphis.
• Temperatures expected to drop from high 80s-90s to 40s overnight Tuesday in southern Plains and Mississippi Valley.
• Late-season snowstorm forecast for Northern Plains and Rockies beginning Tuesday night.
• Potential for significant air travel delays in eastern and central US, including Denver.
• Flood threat from cold front encountering moist Gulf air mass.
• Severe weather threat shifts to Southeast Texas, Louisiana, Mississippi, and Alabama on Wednesday.
• May is statistically the most active month for severe weather.

A 1,500-Mile Front Brings Triple Threat

A massive cold front draped over a corridor from Maine to Texas is set to unleash a triple threat of severe storms, flooding rain, and a late-season snowstorm across more than 25 states. The sprawling system, which began moving over the nation early this week, will impact the majority of the country, with conditions ranging from blizzard-like in the Rockies to flash flooding in the Midwest and Northeast. The front, spanning roughly 1,500 miles, will stall over the central US by Tuesday afternoon, allowing it to clash with warm, moist air from the Gulf of Mexico. This collision will fuel several days of severe weather, particularly in the South, where communities already weary from recent storms face renewed threats.

Severe Storms Target the South and Midwest

The National Oceanic and Atmospheric Administration's Storm Prediction Center has issued a Level 2 out of 5 risk of severe storms for parts of North Texas, including Dallas, as well as eastern Oklahoma, much of Arkansas, southern Missouri, and Memphis, Tennessee. The primary threats are damaging winds and large hail, though forecasters caution that a tornado cannot be ruled out. Severe weather is expected to fire up over the Ark-La-Tex region beginning Tuesday, while rain spreads across the Midwest and Great Lakes before reaching the Northeast on Wednesday. On Wednesday, the severe threat shifts south and expands across Southeast Texas, Louisiana, Mississippi, and Alabama. May is statistically the most active month for severe weather, and this week's pattern underscores that reality.

Temperature Plunge and Late-Season Snow

Behind the cold front, millions of Americans will see temperatures plummet 20 to 30 degrees below average, with conditions more typical of early March than early May. In the southern Plains and parts of the Mississippi Valley, areas that saw highs in the upper 80s and 90s late Tuesday will wake up to temperatures in the 40s Wednesday morning. Meanwhile, cold air wrapping behind the front will create prime conditions for a significant late-season snowstorm across the Northern Plains and the central Rocky Mountains, beginning Tuesday night. The snow could be impactful, disrupting travel and daily life in regions that typically see spring warmth by now.

Flooding Concerns and Travel Disruptions

The flood threat is elevated this week as the cold front encounters a moist air mass from the Gulf, leading to heavy rain that could cause flash flooding, particularly in the Midwest and Northeast. In Texas, recent heavy rain already raised dangerous flooding concerns, with one death reported in San Antonio. The sprawling system also has the potential to cause significant air travel delays in the eastern and central US, as well as Denver, as the front drags across the nation. Delays were already beginning to mount early Tuesday, and travelers are advised to check with airlines for updates.

Drought Relief for Southeastern States

While the severe weather poses risks, the heavy rain associated with this front may bring much-needed drought relief to parts of the Southeast. The front's stall over the region will allow for prolonged rainfall, which could help alleviate dry conditions that have persisted in some areas. However, the same system that brings relief also carries the threat of flash flooding, particularly in urban areas and low-lying regions. Officials urge residents to stay alert and monitor local weather warnings.

What Comes Next: A Week of Unsettled Weather

The cold front is expected to linger across the eastern half of the country through the week, with multiple rounds of storms and precipitation. As the system slowly pushes east, temperatures will remain below average for much of the affected area, with a gradual moderation expected by the weekend. For now, the focus remains on the immediate threats: severe storms in the South, heavy rain in the Midwest and Northeast, and snow in the Rockies. The combination of hazards underscores the power of spring's transition, where winter's chill can still make a forceful return.

The bottom line

• A massive cold front will impact over 25 states, bringing severe storms, flooding rain, and snow.
• NOAA has issued a Level 2 severe storm risk for parts of Texas, Oklahoma, Arkansas, Missouri, and Tennessee.
• Temperatures will drop 20-30 degrees below average, with some areas seeing a 50-degree swing in 24 hours.
• A late-season snowstorm is expected in the Northern Plains and Rockies starting Tuesday night.
• Significant air travel delays are likely in the eastern and central US, including Denver.
• The heavy rain may provide drought relief for the Southeast but also poses flash flood risks.