Sentences with phrase «gust fronts»

Conventional wisdom in the current mesoscale and weather literature argues that convective cold pools, small - scale gravity waves and gust fronts are key to the long - range propagation of organized convection in the Central U.S..

But in Mike's super-parameterized simulations, by design of the approach, simulated cold pools and gust fronts can not have a long - range effect.

We've known for decades that all supercell thunderstorms have a gust front, which is the boundary between the moist, warm air that is flowing into the storm and the generally cooler air coming down out of the storm.

When the gust front gets under the updraft, it pulls up on the rotating air associated with the gust front, stretching it out, and causing it to spin faster... Both the source of rotation of the mesocyclone and the tornado ultimately come from environmental vertical shear, but a tornado can actually sometimes spin in the opposite direction.

Re 68 (myself)-- of course, some tornados are not from supercells — or are not formed by the exact same mechanism; generally what is needed is an updraft over a region of partly horizontal shear such as that associated with a gust front — it could be a gust front from another storm... there are landspouts, gustnados, etc... these tend to be weaker then the supercell tornados, as far as I know (And I'm not entirely sure what defines a «landspout»; for that matter, if a supercell tornado moves over water, is it then a waterspout or is it still a supercell tornado... anyone?)

Not exact matches

Behind the cold front Saturday, winds will be out of the north between 15 to 25 mph and gusts could reach 30 mph or higher during the morning.

Winds gusting 20 or 30 miles an hour on the plains can carry the front of a fire just as fast, forcing firefighters to literally race to keep up with the flames.

The wind will likely increase in front of the front, Lane said, and gusts can send flames spreading in surprising directions.

The 3450 - pound hatchback charges stoically through the gusting wind, although front - end skittishness keeps us from pushing too hard.

Dried leaves covering the front yard, crisp gusts of wind and the dizzying array of autumn colors!