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OBSERVATION Light rain in target area Rain in target area 7/13 No rain observed No rain observed Rain over mountainous and target area 1/13 Amphurs
(4/6)

1/13 Amphurs Amphurs
SEEDING OPERATION 4 3,4,6,8,19 2 4 3,4,6,8,19 3 T-1,3,4,6,19 5 T-1,3,4,6,8,19 1 1,3,4

1 DAILY UPPER AIR SOUNDING AND SEEDING ANALYSES

SDNG PTNIL DECL/CRIT POOR -6 POOR -6 POOR -3 POOR -5 POOR -12
YES: A/C. 2 FLTS. CHEM YES: A/C. FLTS. CHEM YES: A/C. 2 FLTS. CHEM YES: A/C. 2 FLTS. CHEM YES: A/C. 2 FLTS. CHEM

STABILITY INDICES -1.0 -4.1 36.4 - 5.6 -1.7 22.3 - 0.7 -4.6 37.2 196.2 -1.4 -5.6 34.4 - 1.3 -3.4 32.2 -

20.24 SI 18.44 LI 19.99 KI SWT.I 18.41 SI 17.63 LI 18.20 KI SWT.I 20.90 SI 19.84 LI 20.97 KI SWT.I 20.12 SI 17.58 LI 19.46 KI SWT.I 19.86 SI 19.21 LI 19.71 KI SWT.I
MIXING RATIO BASE BASE BASE BASE BASE

- - - - -

SUB CLD 100 MB CLD SUB CLD 100 MB CLD SUB CLD 100 MB CLD SUB CLD 100 MB CLD SUB CLD 100 MB CLD

CONVECTION 9:55 - CCL 2,990.2 50 MB - 8:34 - CCL 3,010.7 50 MB - 16:00 - CCL 4,369.8 50 MB - 8:39 - CCL 2,725.2 50 MB - 16:00 - CCL 4,156.6 50 MB -

TCT LCL LFC TCT LCL LFC TCT LCL LFC TCT LCL LFC TCT LCL LFC

RH 81.0 76.8 57.1 15.5 78.0 73.6 52.3 77.4 79.5 72.6 74.3 56.9 82.6 59.2 68.7 50.1 88.8 61.2 66.2 6.4

TABLE AVERAGE WIND 92.6 32.6 83.6 95.3 242.7 228.5 35.0 - 159.1 311.4 319.6 305.0 59.2 349.9 246.8 - 142.2 95.1 - -

7.3 LAYER 0-5,000 5,000-10,000 10,000-15,000 20,000-25,000 0-5,000 5,000-10,000 10,000-15,000 20,000-25,000 0-5,000 5,000-10,000 10,000-15,000 20,000-25,000 0-5,000 5,000-10,000 10,000-15,000 20,000-25,000 0-5,000 5,000-10,000 10,000-15,000 20,000-25,000

DATE 16 MAY 1998 17 MAY 1998 18 MAY 1998 19 MAY 1998 20 MAY 1998