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Severe thunderstorm watch radar provides information on approaching storms, including tornadoes and flash floods. The severity of storms is defined by the presence of a tornado and wind gusts of at least 58 mph. Hail at least one inch in diameter is a common symptom of an approaching severe thunderstorm.
Severe thunderstorm warning
Severe thunderstorm warnings are issued when a thunderstorm’s damaging wind speed and size exceed a certain threshold. The storms are capable of destroying roofs and denting cars and can bring hailstones as large as three inches. They can also cause injuries and even death.
A severe thunderstorm warning is issued when a spotter reports a thunderstorm with wind speed and hail larger than one inch in diameter. When this warning is issued, you should seek shelter immediately. You must avoid going outside, as the storm can produce tornadoes without any advance warning. Also, remember that a severe thunderstorm warning can be issued without a severe thunderstorm watch.
Severe thunderstorm warnings are issued by the National Weather Service (NWS) or local Weather Forecast Offices (WFOs) and are disseminated through various channels. They can be viewed on the internet, transmitted to NOAA satellites, or broadcasted over NOAA Weather Radio. Sometimes, severe thunderstorm warnings are also issued through wireless emergency alerts.
While severe thunderstorms are rare, they can occur. Severe thunderstorm warnings have been issued for areas of the New York metropolitan area and parts of northwestern New Jersey. The National Weather Service has put the area under a level 2 severe weather risk. The weather watch is in effect until 8 p.m. The threat for large hail is slim but can’t be ruled out.
Severe thunderstorms are now approaching the DC metro area and northern Montgomery County, including Rockville and Reston. The storms are accompanied by lightning and very heavy rain. Wind gusts of up to 50 mph are also possible. The storms are expected to move from the northwest to the southeast over the next 15 minutes. During that time, they should reach the Beltway area.
A line of thunderstorms is expected to develop along the approaching cold front and continue to race across the area. The storms may produce heavy rain, but the system won’t hang around long enough to cause any serious flooding problems. Tornadoes are unlikely, but spin-up twisters cannot be ruled out either. Despite the severe weather, temperatures will remain below average. The severe storms are likely to end on Monday.
Tornado warnings are issued by the Storm Prediction Center if a tornado is forming or is expected. While tornadoes are rare in these situations, they can still develop. To determine whether a tornado is forming or not, look for “radar indicated rotation” and a “wind tag.” The tag indicates the speed of wind.
If a tornado is spotted on severe thunderstorm watch radar, seek shelter in a sturdy building. If there are no sturdy buildings in the immediate vicinity, crouch beneath a desk or other sturdy structure. If you are in a home, do not open windows or move appliances. Listen to weather radio or WFMY News 2 to stay informed.
If you are in a building or shopping mall, try to get to the lowest floor of the building. If that is not possible, take cover in a hallway. Avoid sheltering under highway overpasses. Tunneling effects increase wind speeds. You can also seek shelter in a low-lying area away from windows.
A tornado warning was issued for parts of the northeast, including Grafton, Merrimack, Sullivan, and Sullivan counties. The warning was in effect until 8pm. As a precaution, you should stay indoors and stay away from windows during a severe thunderstorm. It is also recommended to take care of animals and vehicles.
The National Weather Service defines a severe thunderstorm as a tornado if it has winds of at least 50 kt and a diameter of ten inches or more. It may also be accompanied by structural damage. The definition of a tornado is simple: it is a column of air that is violently rotating, pendant to the cumulonimbus, and has a circulation that reaches the ground.
Tornadoes are dangerous and most tornadoes result in death or injury from flying debris. To prepare for a tornado, listen to local radio stations and television for updates. If you’re in a manufactured or mobile home, designate a safe area to evacuate to. In case you’re traveling, try to find an accessible building, ditch, or culvert. You should never try to outrun a tornado.
There is a risk of severe thunderstorms and tornadoes today in parts of the Mid-Atlantic and southwestern New England. If you’re in the area, stay away from the coast and be safe! This storm is expected to dissipate after midnight. If you’re traveling this way, be sure to check the weather forecast and stay indoors. It’s an extremely hazardous time to be in the water.
When a severe thunderstorm is forming, the National Weather Service issues a severe thunderstorm warning. Severe thunderstorms are considered dangerous if they produce more than an inch of hail and strong winds. The National Weather Service will issue a tornado warning if these conditions are met.
Flash flood warning
When a severe thunderstorm is imminent, the weather service issues a Flash Flood Warning. This is a warning for heavy rain, damaging winds, and possible flooding. This warning is not a mandatory emergency, but it’s always good to know what to expect before the weather turns nasty.
Flooding has already been reported in parts of the Pensacola area, including Ferry Pass, Brent, West Pensacola, Ensley, and Pensacola. Those areas are likely to experience flooding, and flooding is expected to be widespread by late this afternoon and evening. In coastal Escambia and Santa Rosa counties, flash flooding is also likely.
Minor flooding continues, particularly in the East Valley. Two inches of rain have fallen in the area. Those areas are still under flash flood warnings. Other areas prone to flooding include Overton Beach, the Virgin River Campground, the Valley of Fire, and Northeast Clark County. In addition, low-water crossings may be affected.
This severe thunderstorm watch radar is focusing on the potential for flash flooding. This will most likely occur in areas with poor drainage. Besides those areas, portions of Fairfax County, Montgomery County, and Prince George’s County are also at risk of flash flooding. The storm is expected to move east at 627 PM EDT.
Flash flood warnings during a severe thunderstorm are issued by the National Weather Service based on weather conditions. The National Weather Service defines a severe thunderstorm as a thunderstorm with one inch of hail and winds that exceed 58 miles per hour. In addition to hail and flash flood, severe thunderstorm watches can also include a Special Marine Warning and Flash Flood Warning. A Flash Flood Warning is issued when the storm is severe enough to bring torrential rain.
If a flash flood warning is issued during a severe thunderstorm, you need to take immediate action to avoid the danger. Stay indoors and listen to NOAA weather radios. Move any animals and vehicles to shelters. If the storm is severe enough, a tornado warning may be issued.
The National Weather Service flash flood watch radar is a follow-up product of the severe thunderstorm watch radar and provides follow-up information. A flash flood is a flood of excessive rainfall in a short amount of time, often caused by a dam failure. During a flash flood warning, the weather service alerts cooperating agencies and the public of favorable hydrologic conditions that could lead to flash flooding.
The severe weather threat has passed from the immediate area, but showers are expected to continue after sunset. The storms will likely linger the longest near the bay and southern Maryland. In addition to the storms, flooding is still a risk for the next few hours. The temperature remains in the upper 60s to lower 70s and winds are from the west and southwest. If you’re planning to spend any time outdoors, be aware of dangerous rip currents.
Whether you’re looking for a way to stay safe and keep informed during a severe thunderstorm, the 12 News app is here to help. The weather team has an interactive radar that will give you the latest updates on the threat for your area.