Summary (tl;dr)

Across parts of the Mid-Atlantic, Northeast, and Central U.S., severe thunderstorm watches and flood alerts are trending as a potent weather system brings threats of damaging winds, heavy rainfall, and flash flooding, prompting widespread emergency notifications.

Essential Background

Severe thunderstorm watches are issued when conditions are favorable for severe thunderstorms to develop, which can include damaging winds, large hail, and even tornadoes. Flood watches indicate that flooding is possible, while flood warnings mean flooding is imminent or already occurring. These alerts are crucial tools used by meteorologists to inform the public and ensure safety during potentially dangerous weather events. The current surge in these alerts is largely fueled by a combination of heat, humidity, and an approaching cold front, creating an unstable atmosphere conducive to strong storms.

The Full Story

As of Monday, June 22, 2026, a widespread severe weather outbreak is gripping various regions of the United States. A severe thunderstorm watch is in effect for Southern Maryland and numerous surrounding counties, including Calvert, Charles, and St. Mary's, as well as the District of Columbia and extended areas of Virginia and eastern and panhandle West Virginia, until 9 p.m. EDT. Damaging wind gusts, frequent lightning, heavy rain, and hail are anticipated with these storms.

Further north, a flood watch has been issued for portions of New York City, including southwestern areas and Staten Island, and much of Northeast New Jersey, including Morristown and Millburn, due to the potential for isolated to scattered flash flooding. Rainfall rates could be as high as 1 to 2 inches per hour, with localized totals potentially reaching up to 4 inches, which is enough to trigger flash flooding in urban areas and impact small creeks and streams. A slight risk of severe thunderstorms, including damaging winds and isolated tornadoes, is also present for parts of New York City and lower Northeast New Jersey.

In the Central U.S., Alabama is under a severe thunderstorm watch until 7:00 PM CDT, encompassing numerous counties like Bibb, Blount, and Jefferson. Kentucky is experiencing flash flood warnings in counties such as Henry, Shelby, Franklin, and Washington, with flood watches for other central counties. Meanwhile, parts of Oklahoma, including Cherokee, Adair, and Wagoner counties, are under flash flood warnings with reports of heavy rain and thousands of power outages due to strong wind gusts, some exceeding 60 mph. Severe thunderstorms have also been reported in Mississippi, near locations like Vaughan and Jackson, and a destructive tornado impacted southern Illinois.

Why It Matters

The trending keywords reflect immediate and serious concerns for public safety and property. Severe thunderstorms can cause significant damage to infrastructure, leading to power outages and dangerous driving conditions, while flash flooding poses a direct threat to life and can result in extensive property damage. The rapid onset of these weather events underscores the importance of staying informed through local weather alerts. The increasing frequency and intensity of such weather phenomena have also prompted technological advancements, such as the expansion of the Watch Duty app to include flood tracking, highlighting a growing public and governmental recognition of the need for rapid and reliable information during climate-related hazards.

Geographic Location

• Calvert County, Maryland, United States (severe thunderstorm watch)
• Charles County, Maryland, United States (severe thunderstorm watch)
• St. Mary's County, Maryland, United States (severe thunderstorm watch)
• Laurel, Anne Arundel County, Maryland, United States (severe thunderstorm watch)
• Anne Arundel County, Maryland, United States (severe thunderstorm watch)
• Prince George's County, Maryland, United States (severe thunderstorm watch)
• Montgomery County, Maryland, United States (severe thunderstorm watch)
• Howard County, Maryland, United States (severe thunderstorm watch)
• Frederick County, Maryland, United States (severe thunderstorm watch)
• Carroll County, Maryland, United States (severe thunderstorm watch)
• Washington County, Maryland, United States (severe thunderstorm watch)
• Allegany County, Maryland, United States (severe thunderstorm watch)
• Cecil County, Maryland, United States (severe thunderstorm watch)
• Baltimore County, Maryland, United States (severe thunderstorm watch)
• Baltimore City, Maryland, United States (severe thunderstorm watch)
• Harford County, Maryland, United States (severe thunderstorm watch)
• Washington, D.C., District of Columbia, United States (severe thunderstorm watch)
• Northern Virginia, United States (severe thunderstorm watch)
• Central Virginia, United States (severe thunderstorm watch)
• Northwest Virginia, United States (severe thunderstorm watch)
• Western Virginia, United States (severe thunderstorm watch)
• West Virginia, United States (flood watch for most of the state)
• Eastern West Virginia, United States (severe thunderstorm watch)
• Panhandle West Virginia, United States (severe thunderstorm watch)
• Southwestern New York City, New York, United States (slight risk of severe thunderstorms, flood watch)
• Lower Hudson Valley, New York, United States (scattered flash flood risk)
• Rockland County, New York, United States (potential for minor river/stream flooding)
• Lower Westchester County, New York, United States (potential for minor river/stream flooding)
• Bronx, New York City, New York, United States (flood watch)
• Brooklyn, Kings County, New York, United States (flood watch)
• Manhattan, New York County, New York, United States (flood watch)
• Northern Queens, Queens County, New York, United States (flood watch)
• Staten Island, Richmond County, New York, United States (slight risk of severe thunderstorms, flood watch)
• Southern Queens, Queens County, New York, United States (flood watch)
• Northeast New Jersey, United States (flood watch, slight risk of severe thunderstorms)
• Morristown, Morris County, New Jersey, United States (flood watch)
• Millburn, Essex County, New Jersey, United States (flood watch)
• Eastern Bergen County, New Jersey, United States (flood watch)
• Eastern Essex County, New Jersey, United States (flood watch)
• Eastern Passaic County, New Jersey, United States (flood watch)
• Eastern Union County, New Jersey, United States (flood watch)
• Hudson County, New Jersey, United States (flood watch)
• Western Bergen County, New Jersey, United States (flood watch)
• Western Essex County, New Jersey, United States (flood watch)
• Western Passaic County, New Jersey, United States (flood watch)
• Western Union County, New Jersey, United States (flood watch)
• Bibb County, Alabama, United States (severe thunderstorm watch)
• Blount County, Alabama, United States (severe thunderstorm watch)
• Calhoun County, Alabama, United States (severe thunderstorm watch)
• Cherokee County, Alabama, United States (severe thunderstorm watch)
• Colbert County, Alabama, United States (severe thunderstorm watch)
• Cullman County, Alabama, United States (severe thunderstorm watch)
• DeKalb County, Alabama, United States (severe thunderstorm watch)
• Etowah County, Alabama, United States (severe thunderstorm watch)
• Fayette County, Alabama, United States (severe thunderstorm watch)
• Franklin County, Alabama, United States (severe thunderstorm watch)
• Greene County, Alabama, United States (severe thunderstorm watch)
• Hale County, Alabama, United States (severe thunderstorm watch)
• Jackson County, Alabama, United States (severe thunderstorm watch)
• Jefferson County, Alabama, United States (severe thunderstorm watch)
• Lamar County, Alabama, United States (severe thunderstorm watch)
• Lauderdale County, Alabama, United States (severe thunderstorm watch)
• Lawrence County, Alabama, United States (severe thunderstorm watch)
• Limestone County, Alabama, United States (severe thunderstorm watch)
• Madison County, Alabama, United States (severe thunderstorm watch)
• Marion County, Alabama, United States (severe thunderstorm watch)
• Marshall County, Alabama, United States (severe thunderstorm watch)
• Morgan County, Alabama, United States (severe thunderstorm watch)
• Pickens County, Alabama, United States (severe thunderstorm watch)
• Shelby County, Alabama, United States (severe thunderstorm watch)
• St. Clair County, Alabama, United States (severe thunderstorm watch)
• Sumter County, Alabama, United States (severe thunderstorm watch)
• Talladega County, Alabama, United States (severe thunderstorm watch)
• Tuscaloosa County, Alabama, United States (severe thunderstorm watch)
• Walker County, Alabama, United States (severe thunderstorm watch)
• Winston County, Alabama, United States (severe thunderstorm watch)
• Henry County, Kentucky, United States (flash flood warning)
• Shelby County, Kentucky, United States (flash flood warning)
• Franklin County, Kentucky, United States (flash flood warning)
• Washington County, Kentucky, United States (flash flood warning)
• Central Kentucky, United States (flood watch)
• Several counties in Indiana, United States (flood watch)
• Cherokee County, Oklahoma, United States (flash flood warning, heavy rain, power outages)
• Adair County, Oklahoma, United States (flash flood warning, heavy rain, power outages)
• Wagoner County, Oklahoma, United States (flash flood warning, heavy rain, power outages)
• Tulsa County, Oklahoma, United States (flash flood warning for northern half, flood advisory for most of metro)
• Rogers County, Oklahoma, United States (flash flood warning)
• Mayes County, Oklahoma, United States (flash flood warning)
• Osage County, Oklahoma, United States (heavy rain)
• Pawnee County, Oklahoma, United States (heavy rain for northern part)
• Wilburton, Latimer County, Oklahoma, United States (58 mph wind gust)
• McAlester, Pittsburg County, Oklahoma, United States (67 mph wind gust)
• Bristow, Creek County, Oklahoma, United States (40-42 mph wind gust)
• Chandler, Lincoln County, Oklahoma, United States (64 mph wind gust)
• Ponca City, Kay County, Oklahoma, United States (51 mph wind gust)
• Hinton, Caddo County, Oklahoma, United States (102 mph wind gust)
• El Reno, Canadian County, Oklahoma, United States (70 mph wind gust)
• Southern Illinois, United States (destructive tornado)
• Near Vaughan, Yazoo County, Mississippi, United States (severe thunderstorms)
• Near Bovina, Warren County, Mississippi, United States (severe thunderstorms)
• Near Yazoo City, Yazoo County, Mississippi, United States (severe thunderstorms)
• Near Mound, Bolivar County, Mississippi, United States (severe thunderstorms)
• Near Jackson, Hinds County, Mississippi, United States (severe thunderstorms)