Environmental 

 Conditions, 1984 

 Season 



Weather in Labrador and east 

 Newfoundland during the 1984 

 international Ice Patrol season 

 tended to be cooler and wetter 

 than nornnal (Table 5). The 

 weather stations listed were 

 selected to give a cross section of 

 weather patterns throughout the 

 province. Months that ran 

 contrary to the cool, wet trend 

 were February and May, which 

 were warmer than normal, and 

 July, which was wanner and drier 

 than normal. The overall wet, cool 

 trend had the effect of allowing 

 sea ice to persist tonger than 

 normal in the Davis Strait and 

 Labrador Sea, thereby offering 

 some protection to icebergs in 

 that region. 



January: The Iceland Low was 

 deeperthan normal during 

 January and the distribution of 

 pressure funnelled in cold 

 continental air (Figure 1), causing 

 the air temperatures to lie well 

 below normal (Table 5). 



February: The Iceland Low was 

 again deeperthan normal, but 

 pressure patterns allowed warm, 

 moist marine air to flow over the 

 Maritimes (Figure 2) and 

 temperatures and precipitation 

 were above normal. 



March: Average surface flow 

 during the nnonth was almost the 

 opposite of the normal pattern 

 (Figure 3) with easterly and 

 northeasterly winds, which 

 brought cool, moist marine air 

 over the Grand Banks and the 

 Maritimes, resulting in slightly 

 lower than normal temperatures 

 and greater than normal 

 precipitation. 



April: The unusual high 

 pressure system over Labrador in 

 April (Figure 4), coupled with lows 

 south of the Avalon Peninsula 

 and over Iceland, caused 

 northeasterly flow across the 

 Labrador coast and easterly flow 

 across Newfoundland and the 

 Grand Banks, with above average 

 precipitation on the Avaton 

 Peninsula (St. John's) and below 

 average temperatures 

 throughout the region (Table 5). 



May: Southwesterly flow over 

 Newfoundland and Labrador 

 (Figure 5) brought in marine air 

 and raised temperatures and 



precipitation above normal. 



June: Underthe influence of 

 low pressure over the Labrador 

 Sea (Figure 6), southerly flow 

 over the region brought in marine 

 air which was cooler and moister 

 than the continental air normal for 

 June. 



July: With near nornial 

 pressures (Figure 7), precipitation 

 was slightly t)elow normal and 

 temperatures slightly above 

 normal during July, suggesting 

 more of a continental influence 

 than normal. 



August: With the cooling of the 

 northern continental air mass that 

 normally takes place in August, a 

 stronger than normal marine 

 influence (Figure 8) brought 

 warmer temperatures and more 

 precipitation over the region. 



September: The Bermuda 

 High was farther south than 

 normal in September (Figure 9), 

 bringing marine air into the area 

 and causing above normal 

 precipitation with near normal 

 temperatures. 



