Weather Warnings

snow squall alert road sign

What is a Snow Squall Warning?

Ed Oswald

It’s snow squall season again! That means it’s time to prepare yourself for sudden changes in weather conditions on the ...

Hurricane Florence in 2018 during an above average atlantic hurricane season

What is a Hurricane Watch?

TWSE Explains

Hurricanes are among the most powerful and destructive natural disasters in coastal regions and island communities. These massive tropical storms ...

tropical storm watch - satellite of tropical storm nicole

What is a Tropical Storm Watch?

TWSE Explains

Coastal regions are no strangers to tropical storms, which, although not as powerful as hurricanes, can still pose significant risks ...

Tornado forming over rural landscape with wind turbines.

What is a Tornado Watch?

Johnathan Orellana

Most common in the U.S. in the Great Plains and the Southeast, tornadoes are one of nature’s most violent weather events. Since thunderstorms always precede tornadoes, thunderstorms are prevalent in the same regions as tornadoes.

flash flood

What is a Flash Flood Watch?

Johnathan Orellana

Areas that experience heavy rainfall, snowmelt, and tropical storms are susceptible to flash floods. If weather conditions are favorable for a flash flood in your area, the National Weather Service issues a flash flood watch to give you time to prepare.

blizzard in new york city

What is a Blizzard Warning?

Johnathan Orellana

Although blizzards are most common in the Great Plains, the upper Midwest, and the Northeastern U.S., blizzards can occur just about anywhere where snow falls in winter.

High Wind Warning

What is a High Wind Warning?

Ed Oswald

The National Weather Service issues various wind warnings to warn the public of dangerous wind conditions. Wind warnings are issued when sustained wind speeds are expected to reach or exceed a certain speed for a certain amount of time.

heavy ice on branches

What is an Ice Storm Warning?

Johnathan Orellana

In the Northeastern US, ice storms are dangerous winter weather events that can cause extensive damage due to severe ice accumulation. Severe ice storms are commonplace in states like Vermont, Pennsylvania, New York, and New Jersey during cold winters but have also occurred in states further south and west.

hurricane harvey hurricane local statement

What is a Hurricane Local Statement?

TWSE Explains

A hurricane local statement is an emergency message that provides critical information about a hurricane. Your local National Weather Service forecast office issues this product, including information about the storm's location, intensity, and expected impacts.

severe thunderstorm watch

What is a Severe Thunderstorm Watch?

Johnathan Orellana

Severe thunderstorms are common in the Southeast U.S and Midwest. However, they can happen almost anywhere (even in unusual places, like Alaska). If weather conditions are favorable for severe thunderstorms, the National Weather Service issues a severe thunderstorm watch.

Philadelphia winter storm

What is a Winter Storm Watch?

Johnathan Orellana

If weather conditions are favorable for hazardous winter weather in your area within 48 hours, then the National Weather Service issues a winter storm watch. Winter storm watches hint at the possibility of hazardous winter weather.