No. IV-18.4 - (IMD), Pune

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16 The percentage frequencies of occurrence of vigorous, active and normal monsoor in the five sub—divisions associated with the above-mentioned synoptic situations are given in Table IV. TABLE IV Percentage frequency of Vigorous, Active and Normal Monsoon days associated with various synoptic situations (Based on data of October to December 1967—71) (a)Goastal Andhra Pradesh Oct. Nov. Dec. V A N V A N V A N* 1. Storms and depressions 33 25 20 100 100 22 75 — 17 2a. Low pressure areas (including low pressure waves) 50 12 23 — — 41 - - 33 b.Upper air cyclonic circulation or trough - 13 5 - - - 3. East—west oriented trough across — 50 — Peninsula, seasonal trough over Bay well—marked, trough of low pressure off Kerala coast 17 50 5.2 — — 37 - - 39 4. Other features --- - - - - 25 50 11 (b) Tamil Nadu Oct. Nov. Dec. V A N V A N V A N* 1. Storms and depressions 83 15 7 45 8 15 57 10 14 2a.Low pressure areas (including 17 53 39 55 67 31 43 50 42 low pressure waves) trough b. Upper air cyclonic circulation or 0 5 5 — 10 — 3. East—west oriented trough across Peninsula, seasonal trough over Bay well-marked, trough of low pressure off Kerala coast 0 27 49 — 25 54 — 30 37 4. * V - Vigorous Monsoon; A - Active Monsoon; N - Normal Monsoon
17 (c) Rayalaseema Oct, Nov. Dec. V A N V A N V A N* 1. Storms and depressions 6 7 — 8 — 100 9 — 50 33 2a. Low pressure areas (including low pressure waves) - 16 23 -- 41 - - 27 b. Upper air cyclonic circulation or trough- 25 10 - - 9 3. East-west oriented trough across — 50 13 Peninsula, seasonal trough over Bay well-marked, trough of low pressure off Kerala coast 33 59 59 - - 41 - - 27 4. Other features - - - - - - - - - (d) South Interior Mysore Oct. Nov. Dec. V A N V A N V A N* 1. Storms and depressions - - 21 - - 16 2a. Low pressure areas (including low pressure waves) b. Upper air cyclonic circulation or trough — 31 26 — 8 7 - - 18 - - 11 - - 16 3„ East-west oriented trough across Peninsula, seasonal trough over Bay well-marked, trough of low pressure off Kerala coast — 61 60 —100 46 - - 61 4. Other features - - - - - 4 - - - (e) Kerala Oct. Nov. Dec. V A N V A N V A N* 1. Storms and depressions 2a. Low pressure areas (including low — 50 32 — — 37 - - 27 pressure waves) b. Upper air cyclonic circulation or trough- - 3 — — —- — — — 3. "East-west oriented trough across Peninsula, seasonal trough over Bay well—marked, trough of low pressure off Kerala coast 100 50 64 - 100 55 - - 67 4. Other features * V - Vigorous Monsoon; Monsoon; N - Normal Monsoon.
Page 2 and 3: FORECASTING MANUAL REPORTS Ho. 1-1
Page 4 and 5: Contents: 1. Introduction 2. Genera
Page 6 and 7: 2 1.3 In this report, we will deal
Page 8 and 9: 4 TABLE - I Mean Monthly, seasonal
Page 10 and 11: 6 iv)South Interior Mysore:— For
Page 12 and 13: 8 TABLE - II Division *Large excess
Page 14 and 15: 10 tions between 0300 and 0900 IST.
Page 16 and 17: temporarily shift north and come ov
Page 18 and 19: 14 Coastal Andhra Pradesh. 9.4 In a
Page 22 and 23: 11.2 Some details of the rainfall c
Page 24 and 25: ii) Depression and storms affect th
Page 26 and 27: 22 the incidence of storms in this
Page 28 and 29: 24 iv) Phenomenally heavy rains may
Page 30 and 31: 26 change chart or as a region of n
Page 32 and 33: 28 tilt usually towards a direction
Page 34 and 35: 30 rainfall is mostly along and to
Page 36 and 37: 32 south Peninsula. Rainfall was ge
Page 38 and 39: 34 even after the storm had moved i
Page 40 and 41: south Orissa coasts where speeds re
Page 42 and 43: 38 useful indications to prognostic
Page 44 and 45: 40 15.5 The main features in this s
Page 46 and 47: 42 Port Blair and also in the press
Page 48 and 49: 44 marked in the moisture field. Th
Page 50 and 51: 46 cloud configuration in the APT p
Page 52 and 53: 48 though it was still widespread (
Page 54 and 55: 50 area) than in the surface isobar
Page 56 and 57: 52 between the moist easterlies and
Page 58 and 59: 54 i) During this period, the antic
Page 60 and 61: 56 REFERENCES AND SELECTED BIBLIOGR
Page 62 and 63: 58 35. Raghavondra, V.K. and Rao, K
Page 64 and 65: 6"€. Venkiteshwaran, S.P. 1933: T
Page 66 and 67: FIG. 3.1 MEAN RAINFALL (Cm)
Page 68 and 69: FIG. 9.1 VERTICAL PROFILE OF MONTHL
Page 70 and 71:
Fig. 10.2 Mean Tephigrams of Madras
Page 72 and 73:
FIG. Il.l RAINFALL FOR 24 HRS. ENDI
Page 74 and 75:
FIG. 12.1 TYPICAL DAY'S ISOHYETAL C
Page 77:
FIG 13.2 UPPER WINDS 00 GMT 2 NOV.
Page 81:
FIG. 13.6 UPPER WINDS 00 GMT 4 NOV.
Page 85:
FIG. 14-2 UPPER WINDS 0 0 GMT 5 NOV
Page 88:
FIG. 14.5 1200 GMT 6 NOV. 69 24 HR.
Page 92:
FIG. 14.10 UPPER WINDS 00 GMT 8 NOV
Page 96:
F1G.15. 4 UPPER WINDS 00 G M T 11 N
Page 99 and 100:
FIG. 15.7 SYNOPTIC CHARTS 0300 GMT
Page 102:
FIG. 16.2 UPPER WINDS OO GMT 7 OCT.
Page 107:
FIG. 16.7 UPPER WINDS 00 GMT 10 OCT
Page 110 and 111:
FIG. 16.10 TIME CROSS SECTION CHART
Page 113:
FIG. 17-2 UPPER WINDS 6 D E C . 7 1
Page 117:
FIG. 17-6 UPPER WINDS OO GMT 8 DEC.
Page 121:
FIG. 18-3 UPPER WINDS OOGMT 25 OCT.
Page 124 and 125:
Page 126 and 127:
FIG.195 SPACE CROSS-SECTION 9 N0V.
Page 128 and 129:
Page 130 and 131:
FIG. 19.9 TEPHIGRAM OF BANGALORE &
Page 132:
No. IV-13 Rainfall of India - P. Ja
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No. IV-18.4 - (IMD), Pune

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