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cyclones who's central pressure falls by > 24mb/24hr
return stroke
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a branch channel of positively charged ions that rushes upward from the
ground following the ionized trail by the stepped ladder, stripping e-
formats path
,Giant rain storms are considered to have more than how many mm of precipitation?
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200mm
Downburst
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Strong downdraft in a thunderstorm that strikes the earths surface and
diverges horizontally as a violent wind pulse
anvil cloud consists of what?
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ice
in the growth - transition stage of hailstone the grapple and large raindrops enter the
storms main________
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updraft
,some return strokes have a continuing current of _________ that lasts form ______ to _____ms
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~100A; 10-500
what is the prairies, NW and Nunavut criteria for a blizzard warning (3)
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1. low temps below 0˙C
2. sustained winds greater than 40km/hour
3. snow/blowing snow restricting viability less than 0.4km
hodograph contorls and storm types:
a) littler shear
b) linear shear
c) directional shear
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a) single cell
b) multi-cell
c) supercell
screening layer
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, Thin layer along the boundaries of thunderstorm clouds that has a charge
opposite to the interior of the cloud.
What amount of current is produced by the return stroke?
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10^5 A
each strike of lightning transfers a charge of what to the earths surface?
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10 coulombs of negative charge
lightning is associated with what?
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convective activity
red colour on a radar image means?
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