Storm brings risks of fires, blizzards and tornados in large parts of the United States

What prognosis calls an “unusually strong” storm system for this time of year is ready to intensify Tuesday, bringing warnings about blizzard conditions to the plains, fireplace weather to Texas, serious storms in the south and strong wind over the central United States.

These are the most important things to know:

• The most significant threat is from serious storms in the south. The system has already led to the cancellation of some Mardi Gras celebrations in New Orleans.

• To the north, the storm is expected to bring Blizzard conditions over the central plains, including parts of Colorado, Nebraska, Kansas, Iowa, Minnesota and Missouri.

• Potentially historical conditions for fire weather can lead to blowing over Texas Hill Country and South Central Texas Tuesday, including Austin and San Antonio.

• The system is expected to affect much of the East Coast on Wednesday.

Tornadoes are possible over the deep south.

The storm has steam rolling across the country this week. Meteorologists predict that strengthening winds and an influx of warm, humid air from the Gulf will create favorable conditions for severe weather over the south. In Tuesday afternoon and evening, conditions in the region will be mature for serious storms. Forecasts have warned to damage wind throw, hail and possible tornadoes from eastern Oklahoma through Alabama and far western parts of Florida.

A tornadour was in effect in parts of Texas, Oklahoma and Arkansas Tuesday morning.

Marc Chenard, a meteorologist at the Weather Prediction Center, said the question is not whether there will be serious storms all over the South, but how strong they will be. At a minimum, a line of thunderstorms is expected to develop and sweep through Arkansas, Louisiana, Mississippi and Alabama on a scale that people typically see several times a year.

There is also a possibility that the storms can also be significantly stronger, as well as include strong tornadoes that can cause damage.

The most likely scenario is somewhere in between.

Blizzard relationship is expected to the north.

Mr. Chenard said he expects it to be “pretty ugly outside” for some in the cunning regions during this storm.

He warned that there could be a pretty heavy snow for a short time over eastern Nebraska to Iowa and even into Minnesota. Even if only a few inches of snow fall during this time, the wind can whip it around to zero visibility, which can create a deadly danger to everyone on the road.

Southwest faces a potentially historic fire risk.

Dry relationship adds another layer of concern as the storm passes through. Monday when the storm crossed the southwest, its wind kicked up a larger dust storm In New Mexico leading to the closure of some highways.

But one of the most potent risks with this storm is potentially fire over Texas. Forecasts with Storm Prediction Center have warned of “dangerous, potentially historic fire” over parts of Edwards Plateau and South Texas Plains.

“Tuesday will have the most extreme fire hazard experienced throughout the southern central Texas this year,” a forecast in San Antonio wrote Monday night.

Storm Prediction Center issued its risk warning at the highest level of “extremely critical” fireplace conditions in parts of Texas, including San Antonio and Austin. Southeastern areas of New Mexico were also added to the extremely critical risk.

Here’s what typical and not about this system.

Mr. Chenard said that what made this storm unusual was the possibility that the pressure, a way of measuring the strength of a storm, would fall into almost record-low readings for March. But storms like this are three -dimensional, and there are other ingredients than just low pressure that can contribute to how they ultimately affect the areas they pass through.

And in this case, Mr. Chenard, the effects may not really be so unusual for this time of year. There may not be much cold air behind this system, he said, which means it may not bring as much snow as one would expect with other storms. And because the storm is moving so fast, precipitation will not kill itself over a long place, which continues to flood rain and snow in pouring up. Still, forecasters like Mr. Chenard does not submit to the risk when the storm intensifies on Tuesday.

The father moves east on Wednesday.

As the storm continues to marje to the east, it will swing rain and thunderstorms through the east coast. The most likely area of ​​serious storms will be over eastern South Carolina, eastern North Carolina and southeastern Virginia. Storm Prediction Center has issued an improved risk to these areas warning of severe thunderstorms capable of producing harmful winds and a few tornadoes on Wednesday morning and until Wednesday afternoon.

On the western side of this strong March storm, cold air could lead to snow in places that received rain the day before – or in some cases even hours before.