class%3:%synop-c%fronts% - mit...
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Class 3: Synop-c Fronts
twisterdata.com Valid 1-‐16-‐15 12Z
Typical mid-‐life low pressure system
Mature low pressure system
ww2010.atmos.uiuc.edu
crh.noaa.gov
WPC forecast for Sunday morning
mature cyclone, featuring an occluded front
developing cyclone
Why do we care about where fronts are, and where they’re moving?
ü Temperature changes (oHen rapid)
ü Moisture changes ü Wind shiH ü UpliHing air à clouds and oHen precipita-on
Typical cold front wind shiA
Typical cold front wind shiA
Passage of a cold front in Boston late Monday/early Tuesday…
temperature drop
wind shiA 1/12/15
Cold fronts are oHen associated with squall lines (thunderstorms or snow showers).
Warm fronts are associated with a wide swath of steadier precipita-on.
Recent Weather
