Lecture #16
Mesoscale Convective Systems and Squall Lines
Monday, 26 February 2001

Text Reading for Lecture #16
Severe Thunderstorms (385-395)


WEATHER THIS WEEKEND

wpe5B.jpg (135434 bytes) Dewpoint field Saturday at 23 UTC

wpe67.jpg (111270 bytes) Dewpoint field Saturday at 23 UTC

wpe6C.jpg (109228 bytes) Dryline in the Oklahoma Mesonet

wpe6D.jpg (74316 bytes) Dryline and blowing dust on satellite

wpe6E.jpg (82226 bytes) Dryline convection on radar

Bow Echoes Within Lines

wpe6F.jpg (39974 bytes) Bow echo schematic

wpe70.jpg (35851 bytes) Bow echo on radar

Back to Mesoscale Convective
Sytstems HERE

SUPERCELL STORMS

wpe72.jpg (41178 bytes) Wind profiles

Overview

Evolution and Updrafts

wpe73.jpg (50384 bytes) Separation of supercell updraft/downdraft

wpe74.jpg (45948 bytes) Schematic and photo

wpe75.jpg (30868 bytes) Supercell schematic (KNOW THIS!!!)

wpe76.jpg (66942 bytes) 3D schematic

wpe77.jpg (101567 bytes) Supercell on radar versus schematic (refl)

wpe78.jpg (131751 bytes) Supercell on radar (refl and velocity)

wpe79.jpg (38131 bytes) Supercell ahead of a squall line

Rotation and Downdrafts

Movie Showing Onset of Storm
Rotation

wpe7A.jpg (44897 bytes) Mesocyclone and wall cloud

wpe7C.jpg (34414 bytes) Mesocyclone and wall cloud

wpe7D.jpg (24060 bytes) Wall cloud within mesocyclone

wpe7B.jpg (41787 bytes) Schematic and tornado/wall cloud

Rear Flank Downdrafts

Numerical simulations of supercell
storms are HERE and HERE.

Other information on supercells
available HERE