SYNOPTIC TYPE(mid and upper levels)

streamline

500 mb

T-TdɞoC

250 mb wind max

Shortwave

sometimes

2nd jet streak

500 mb winds

are plotted

PW=1.46

(181%)

300 mb

500 mb

SFC

700 mb

200 mb

850 mb

-57

2

8

-11

10

-38

3

5

67

74

15

K=36

SI=2

6

5

4

3

2

1

0

NUMBER OF EVENTS

CAN HAPPEN ANY TIME OF YEAR

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