Happy Sunday, America! A powerful storm system is about to shake up our weather, bringing big temperature swings and a serious risk for severe storms across parts of the East and Mid-Atlantic.
Sunday will feel like the classic calm before the storm for much of the eastern United States. Most areas stay dry during the day, with highs climbing into the mid to upper 60s in many spots and a mix of clouds and sunshine. Winds increase through the afternoon, generally from the east or southeast at 10–20 mph, gusting higher near the coast. Clouds will thicken as a warm front approaches, especially later in the day and evening. A stray shower can’t be ruled out late day, but many communities stay dry through early evening. Use this quieter window today to get ready: secure loose outdoor items, review your severe weather plan and make sure your phones and power banks are fully charged in case of outages tomorrow.
As the warm front lifts northward tonight, scattered showers and a few thunderstorms will develop, especially from the Carolinas into the Mid-Atlantic and up through the Appalachians. Storms tonight may include downpours and some lightning, but the most intense severe weather is still expected on Monday. NOAA’s Storm Prediction Center (SPC) highlights parts of the Mid-Atlantic and Carolinas in at least a “slight” to “enhanced” risk, which is levels 2–3 out of 5 on their scale. A damaging wind gust or isolated hail report is possible in a stronger cell, but the primary concern remains Monday’s setup. Remember, SPC’s levels work like this: Level 1: Marginal risk (isolated severe). Level 2: Slight risk (scattered severe). Level 3: Enhanced risk (numerous severe). Level 4: Moderate risk (widespread, higher-end severe). Level 5: High risk (rare, major outbreak).
Monday is a day to stay weather-aware across a large portion of the eastern United States, from the Southeast up through the Mid-Atlantic and into parts of the Northeast. Meteorologists expect a widespread band of thunderstorms along a strong cold front as it sweeps east. The highest risk zone runs from parts of the Carolinas through Virginia and into the Mid-Atlantic, where an enhanced (level 3 of 5) or even moderate (level 4 of 5) risk is possible. Areas outside that core zone, including portions of the Southeast and Northeast, can still see damaging winds and a few tornadoes embedded in the line. In simple terms: for some communities, this is not a routine thunderstorm day—this setup can support multiple severe thunderstorm warnings and at least a few tornado warnings as the line moves through.
Damaging winds: Widespread 40–60 mph gusts in storms, with stronger, destructive winds possible in the most intense cells. Tornadoes: A few tornadoes are possible, either embedded within the squall line or in isolated storms ahead of it. Hail: Locally severe hail may occur, especially in any discrete storms that form before the main line. Power outages: With saturated ground and strong winds, tree damage and scattered to widespread outages are likely in some regions.
Exact timing varies by location, but many areas in the East can expect storms from late morning into Monday night. A common scenario looks like this: Late morning to midday: First round of storms or broken line, bringing heavy rain and some severe cells. Late afternoon to evening: A stronger, more organized squall line races east with the cold front, carrying the highest risk of widespread damaging winds and a few tornadoes. How the first round behaves matters. If the morning storms are intense and clouds linger all day, that can limit the energy available for the evening line, slightly reducing its strength. If the first round is weaker and the sun breaks out for a while in the afternoon, the atmosphere can “recharge,” making that second line more dangerous. Either way, plan for the possibility of severe storms both midday and late day, and do not let a quiet stretch lull you into dropping your guard.
Preparation today and early Monday can make a big difference when warnings are issued. Secure loose outdoor items: Trash cans, lawn furniture, grills, toys and decorations can become projectiles in 50–60 mph winds. Charge devices: Fully charge phones, tablets and power banks so you can receive alerts and stay in touch during outages. Check multiple alert sources: Enable Wireless Emergency Alerts on your phone, keep a NOAA Weather Radio if you have one and follow your local TV station or National Weather Service office. Identify your safe place: The safest spot is the lowest, most interior room in a sturdy building—think basement, or an interior hallway or bathroom away from windows. Rethink mobile homes: Mobile and manufactured homes are not safe in tornado-strength winds; if you live in one, plan in advance where you can go if a tornado warning is issued.
Severe thunderstorm warning: Move indoors, stay away from windows and avoid driving during the worst of the storm. Tornado warning: Go to your safe place immediately. Put as many walls between you and the outside as possible, and protect your head with a helmet, pillow or sturdy object. Driving: If you encounter fierce winds, hail or blinding rain, safely pull over and wait it out rather than trying to rush through the line. Think of Monday as a “weather alert day” for millions of Americans across the East: keep your schedule flexible, especially in the afternoon and evening, and stay ready to adjust plans around the storms.
Once the cold front sweeps offshore Monday night, the atmosphere flips to a cooler, calmer pattern. Temperatures tumble from 60s–70s on Monday to much cooler readings on Tuesday, including St. Patrick’s Day, with some areas stuck in the 40s or even colder in parts of the Midwest and Northeast. Brisk northwest winds will make it feel even chillier, especially near the Great Lakes and interior Northeast. Mid to late week looks drier and brighter for much of the country, with highs gradually moderating back into the 50s and 60s in many spots as we approach the first official day of spring. For St. Patrick’s Day celebrations, many cities will trade storm threats for sunshine and jackets: you may need layers rather than rain gear, but at least the worst of the severe weather should be gone. Use today’s relative quiet to prepare, enjoy what you can of this Sunday, and stay alert for Monday’s severe weather updates from your local meteorologists and the National Weather Service.
