HEIGHT IN FEET ————> 
HEIGHT IN FEET ————> 
HEIGHT IN FEET —e 
HEIGHT IN FEET —e 
MEAN SOUNDING 
24,25 MARGH 
0700-1900 
WIND 
SURFACE ENE 8 KNOTS 
OFT ENE [0 KNOTS 
340 350 360 370 380 390 400: 
MODIFIED INDEX ——> 
Ticure 9. Mean sounding during low winds. 
MEAN SOUNDING 
10,11,12,13 APRIL 
1900-0700 
SURFAGE ENE 20 KNOTS 
1OOFT ENE 24 KNOTS 
@ 
(-) 
a 
So 
2 
°o 
alia 
es | 
ccciree inex —— 
iJ 
° 
Figure 10. Mean sounding during high winds. 
APPENDIX 
MEAN SOUNDING 
27, 28, 29 MARCH 
1900-0700 
wind y 
SURFACE ENE I7 KNOTS | SURFACE: NNE 16 KNOTS 
100 FT ENE 23 KNOTS t 100 FEET: NNE 19 KNOTS 
NIGHT 1900-0700 V—V uo 
WIND uu 
SURFACE ENE I KNOTS 2 
100 FT ENE 23 KNOTS = 
x 
° 
Pr 
=x 
330 340. 370 380 390 400 
TEMPERATURE IN DEGREES F MIXING RATIO , G/KG ae INDEx——_> 
Figure 7. Mean temperature and mixing ratio curves. Ficure 11. Mean soundings during an influx of dry 
air. 
100 1001 AMPLE SOUNDING 
MEAN SOUNDINGS WAPRIL 1900 
9,10 MARCH 4 
80) : 
80 d DAY 0700 1900 o-o SURFAGE:ENE 17 KNOTS 
WIND 
SURFACE ENE 17 KNOTS cA 
re 100 FT ENE 23 KNOTS ira 
NIGHT 1900-0700 V—-V = 
WIND & 40 
SURFACE ENE 18 KNOTS Fc) 
40 1OOFT ENE 23 KNOTS rr 
20 
20 
330 340360360" 370 380390. 400 
MODIFIED INDEX——> 
° 340. 350.°«2360+«#S7O=:*«é‘ O!!*~«S8O~«S Ficure 12. Mean soundings during an influx of moist . 
air. 
MODIFIED INDEX ———= 
2 MILES FROM TOWER 
Figure 8. Mean modified index curves. 26,27 MARCH 1500-1700 raps ACE Nee I-16 2 KNOTS 
° A 
76 78 80 62 84 2 13 '4 340 360 380 
TEMPERATURE MIXING RATIO MODIFIED 
IN DEGREES F IN G/KG tNDEX 
Figure 13. Inland soundings. 
EFFECTIVE M DEFICIT 
EFFECTIVE M DEFICIT 
VERSUS 
WIND SPEED 
() 5 10 15 20 25 30 
SURFACE WIND SPEED IN KNOTS 
Ficure 14. M deficit versus wind speed. 
