IVIeteorological Abstract for the Year 1901. 



ObsorvatioDB made at McGill College Observatory, Montreal, Canada. — Height above sea level 187 ft. 



Latitude N. 45° 30' 17". Longitude 4" 54™ 18-67' W. 

 C. H. McLEOD, Superintendent. 







Tbrbuourter. 







• Bahometgr. 





i'i 



WlHD. 



3 q 



Percipitation. 







_ 







1 



feSg 



age 



i 



J3 



-53 g 



E 



0S 



! = 





MoKCiT. 



1 



IT DBvia- 

 lion from 

 27 years, 



1 



H 



III 



S 



s 



s 



lis 



Resultant 

 direction. 



.Mean 

 velocity 

 in miles 

 per hour. 



Month. 





1276 

 12.46 

 24. »7 

 43 61 

 66.17 

 66.83 

 7C.27 

 67.31 

 60.36 

 47.17 

 28.73 

 21.58 



+ 0.43 

 -3.09 

 + 0.64 

 + 3.02 

 + 1.45 

 + 1.86 

 + I.3S 

 + 0.63 

 + 1.83 

 + 1 22 

 -3.00 

 + 2.34 



39.0 

 29.6 

 40.0 

 75.2 

 79.4 

 92.0 

 03.7 

 84.7 

 83.0 

 70.0 

 67.7 

 69.1 



-16.7 



- 1.0 



- 0.0 

 30.7 

 40.1 

 48.7 

 63 7 

 65.0 

 33.9 

 30.0 



4.3 



- 4.7 



15.27 

 11.1.7 

 13.27 

 14.35 

 14.82 

 17.20 

 16.16 

 14.61 

 15. U2 

 13.17 

 9.29 

 11.45 



29.978 

 29.825 

 28. 878 

 30.049 

 29.863 

 29.890 

 29.907 

 29.99S 

 30.011 

 30.011 

 29.963 

 30.038 



30.78 

 30.39 

 30.51 

 30.48 

 30.24 

 30.23 

 30.24 

 30.28 

 30.67 

 30.65 

 30.45 

 30.68 



29.03 

 29.41 

 29.29 

 29.61 

 29.40 

 29.65 

 29.69 

 29.71 

 29.49 

 29.36 

 29.11 

 2942 



.387 

 .190 

 .303 

 .167 

 .187 

 .137 

 .150 

 .ll6 

 .208 

 .242 

 .234 

 .280 



85.5 

 81.1 

 79.6 

 73.9 

 68.0 

 70.8 

 67.7 

 76.0 

 76.6 

 75.8 

 82. » 

 83.6 



W. f,°m'S. 

 W. 8"43'N. 

 W. 9°42'N. 

 (f. 44°38'E. 

 3. 23°43'W. 

 WAO'W S. 

 W. 22-51' N. 

 W.27»29'N. 

 \V. 13=28' N. 

 VV.16°15' S. 

 W.19°47'N. 

 V7.82=55' S. 



16.58 

 19.68 

 17.91 

 17.47 

 9.b9 

 11.15 

 11.56 

 10.36 

 11.87 

 14.11 

 14.81 

 14.23 



34.1 

 43.5 

 30.4 

 39. 3 

 43.8 

 61.6 

 57.9 

 49.2 

 60.3 

 41.8 

 23.8 

 08 6 



0.27 



2.90 

 4.01 

 2 50 

 1.97 

 5.27 

 6.44 

 3.95 

 3.50 

 1.05 

 2.89 



i 



'7 

 16 

 19 

 12 

 12 

 14 

 13 

 12 

 6 

 6 



27.1 

 22.4 

 26.0 

 1.3 



■i!6 



2D.2 

 15.1 



17 

 13 



20 

 2 



'3 

 18 

 13 



2.98 

 2.01 

 7.32 

 4.19 

 2.50 

 1.97 

 6.27 

 5.44 

 3.95 

 3.60 

 4.07 

 4.68 



2 



i 



■i 



i 

 2 

 3 



19 

 13 

 23 

 16 

 19 

 12 

 12 

 14 

 13 

 12 

 21 

 16 



January 





February 



Miiroh 



fc" 



March 



April 



May 



t:::;;-;:;:;:::::;::;::: 



June 



July 









September 











iJcDombor 



December 





42.67 



+ 0.'71 







ii'k 



29.953 







!2i9 



76.'87 



V.S'N. 



i4'67 



41. 'is 



33.75 



120 



121.1 



86 



47.98 

 4.00 



16 



190 





MottDB for 1901 



Means for luul 



''Z'JA'T.°'':'.'[ 



42.03 











29.980 









75.40 





a 14.96 



§45.76 



28.84 



134 



120.93 



80 



40.94 



16 



201 



S Means for 27 years ondinn 

 i Deo. 3I,!190! 



• BftromoterrottdinKS reduced to 32" Fiih. and to sea lovel. t The monthly thermo 

 atindard time. IT "+" indioatoa that the tomoerivture hiia been higher: "— " that it has 1 

 oenvedfromobBerTationemndeatSft, 15 A aDd2UA. § For ^0 years only, a For 15 years ( 

 " ' 'eplaced by a ate 



ino Wind tower on the muuntaio wae baraed down on April 2ath ; it 

 anemometer and wind vane on the City Hall. 

 « CO '^*'? Breateet boat wn* 93.7° above zero (Pah.) on July 16th; the greatest cold was 16.7 bolow 

 "" " . 21 ; leaat ran^e was 2.2° on_ Doo. 29th. The warmest da]?__wa3 July 16th, whi 



leter and barometer means are derived from bihourly readine:B taken from self-reoordingr instruments, beginning 1 b. m. Eastern 

 3eQ lower than the average for 27 years inclusive of 1901. 1 Humidity relative, saturation being 100; the humidity means are 

 ily. The anemometer and wind vane are on the snmmit of Mount Royal, 51 feet above the ground and 807 feet above sea level. 

 1 structure, and the instruments were set up on Jnoe 2t3tli : the readings for the intervening period were obtained from the 



f^Kon IJ" daya; thundorBton 

 NoTE.-The yearly 



relative humidity observed was 24 on May 3rd. The sreatest mileaRe of wind recorded in one hour waa 55 on Feb- 15th, and the greatest velocity in gusts was at the rate of 60 miles per ho 



iid was 123,240. The resultant direction of the wind for the year was \V 8' N., and the resultant mileage 5920U. Lunar halos were observed; on 4 nights ; lunar coronas on 6 nights; 

 15 days ; total number ol thunderstorms 17. First sleiEhing of winter in city was on Nov- l3th. The first appreciable snowfall of the antumn was on Oct. 19tb. The first trace of snow waa 



3 the averages of the monthly means, eioopt for the velocity of the wind* 



