Low Pressure

1
(No Transcript)
2
(No Transcript)
3
(No Transcript)
4
Low Pressure
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
Today's Jet Stream
11
Jet Stream - Zonal Flow
12
Jet Stream - Meridonial Flow
13
Pineapple Express
14
(No Transcript)
15
Cold Front
16
(No Transcript)
17
(No Transcript)
18
(No Transcript)
19
Warm Front
20
(No Transcript)
21
Approaching Warm Front
22
Stationary Front
23
(No Transcript)
24
(No Transcript)
25
Stationary Front
26
Occluded Front
27
(No Transcript)
28
http//Billings Weather 040506
29
(No Transcript)
30
Occluded Front
31
(No Transcript)
32
(No Transcript)
33
(No Transcript)
34
(No Transcript)
35
(No Transcript)
36
(No Transcript)
37
(No Transcript)
38
(No Transcript)
39
(No Transcript)
40
(No Transcript)
41
(No Transcript)
42
(No Transcript)
43
(No Transcript)
44
(No Transcript)
45
(No Transcript)
46
(No Transcript)
47
(No Transcript)
48
(No Transcript)
49
Wall Clouds
50
(No Transcript)
51
(No Transcript)
52

53
(No Transcript)
54
Tail Cloud
55
(No Transcript)
56
(No Transcript)
57
Flanking Line
58
(No Transcript)
59
The core of the updraft has the strongest
convective upward vertical velocity. This core of
rapidly rising air will only slow down and stop
when it encounters a very stable layer in the
atmosphere. This very stable layer is the
tropopause. Air will rise as long as it is less
dense and therefore more buoyant than surrounding
air. The faster air rises the longer it takes
generally to slow down and stop once it
encounters a very stable layer. This occurs
because a moving object has momentum. That part
of the updraft that has the greatest momentum
will form the overshooting top on a severe
thunderstorm. The diagram below shows the
overshooting top at "B".
60
Overshooting Top
61
(No Transcript)
62
(No Transcript)
63
(No Transcript)
64
(No Transcript)
65
(No Transcript)
66
(No Transcript)
67
(No Transcript)
68
(No Transcript)
69
(No Transcript)
70
(No Transcript)
71
(No Transcript)
72
(No Transcript)
73
(No Transcript)
74
(No Transcript)
75
(No Transcript)
76
(No Transcript)
77
(No Transcript)
78
(No Transcript)
79
(No Transcript)
80
(No Transcript)
81
(No Transcript)
82
(No Transcript)
83
(No Transcript)
84
(No Transcript)
85
(No Transcript)
86
(No Transcript)
87
(No Transcript)
88
(No Transcript)