GEOG 111 1st Edition Lecture 29 Outline of Last Lecture I Types of weather around wave cyclones II Stages of development III Cyclone tracks Outline of Current Lecture I Types of weather around wave cyclones II Cyclone tracks a The Alberta Clipper b Texas Great Lakes c The Gulf Atlantic Coast III Frozen precipitation a Types b Weather setup Current Lecture I Cyclone tracks cont d a The Alberta Clipper i Form most often in Alberta region of Canada ii Fast moving iii Produce light precipitation near track iv Far away from bodies of water relatively dry system v NC generally on warm dry side of cyclone vi Don t have a chance to capture Gulf or Atlantic moisture vii Common during winter 1 Generally an artic high will push in behind the clipper b Texas Great Lakes i Bit slower ii Center is closer to the Gulf of Mexico draws much moisture north from the Gulf 1 Water vapor rises condensation cumulonimbus clouds 2 Heavy precipitation higher rates along and North of the track iii Stronger they are and the more slowly they move the wetter they will be iv Severe thunderstorms can occur south of the track 1 Possibly hail strong winds v Air is getting colder aloft trough is approaching from the West 1 Atmosphere is destabilizing c The Gulf Atlantic Coast i Heavy precipitation along and north of the track 1 Produces the heaviest precipitation in our area These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute ii Not as quick as Alberta Clipper iii Large amounts of water vapor because it hugs the coast iv NC remains in cool sector and could receive frozen precipitation II Frozen precipitation a Types i Freezing rain cold rain hits the surface and then freezes ii Sleet pellets of ice 1 Not nearly as dangerous as freezing rain a Can get some traction on sleet b Always bounce off surface b Weather setup i Air gradually lifts up over cold air 1 Relatively warmer air above cold wedge ii Rain freezing rain sleet snow iii Thickness of wedge determines type of precipitation 1 Warmer thicker nose freezing rain 2 Thinner nose sleet c Temperature profile of freezing rain
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