Violent storm in the United States: conditions that are conducive to the creation of a bomb weather

News 3 March, 2018

AFP

QMI agency

Saturday, 3 march, 2018 09:46

UPDATE
Saturday, 3 march, 2018 09:46

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The conditions necessary for the creation of a bomb and weather were gathered together, ” observes meteorologist Gilles’brien, in the aftermath of a deadly storm that struck the United States on Friday.

More than 100 mm of rain and between 30 and 40 cm of snow fell on the East coast of the u.s. on Friday; the winds reached 160 km/h in some areas. “You can’t keep you standing outside, you’ll fly away”, emphasizes the expert.

To arrive at this situation, it is necessary to the weather conditions : the air must be very cold on the continent and very warm in the Atlantic. Thus, one obtains a bomb weather, the winter equivalent of a hurricane.

“These are depressions that are explosive, remarked Mr.’brien, in an interview to the Quebec Morning. They will form very quickly : when a depression is going to dig out of 24 millibars in 24 hours, this is the definition of a bomb weather. This is what happened yesterday.”

More than a thousand flights and travel by rail have been disrupted by the weather. At least five people were killed, most of them have been caused by trees or branches.

“When the winds begin to part with the storms, it is not them that are disastrous, what are the objects that are propelled by these winds. It still has the proof with this storm.”

Floods are also occurring in the coastal areas : the tides were very high due to the full moon. A record has almost been reached in Boston.

The worst is past

Saturday morning, one could say that the worst was past. Winds oscillating between 80 and 90 km/h were still recorded on the East coast.

“The intense depression that ravaged the east coast Is currently in the Atlantic ocean, off the coast of Cape Cod,” says Mr. Brien. It is finished, but there is still a lot of wind.”

Some remnants of the bomb reached the city, winds gusting between 30 and 60 km/h were registered in the areas near the St. Lawrence river.