and the westerly flow bringing 

 warmer, drier, continental air 

 to Labrador, instead of the 

 Polar Maritime air usually 

 influencing Newfoundland and 

 Labrador. The conditions over 

 the Grand Banks were likely 

 warmer, wetter, than normal 

 due to the southwesterly flow 

 again bringing warm, moist, 

 air to the Grand Banks from the 

 south. 



May: A ridge of high pressure 

 extended across the North 

 Atlantic in May (Figure 7). 

 The resulting southwesterly 

 flow around this ridge brought 

 air from farther south than 

 normal to Newfoundland. This 

 warm, moist air brought 

 warmer than normal tempera- 

 tures to Newfoundland and 

 southern Labrador (Table 6). 

 The conditions on the Grand 

 Banks were likely to be 

 warmer and moister than 

 normal in May. The colder, 

 wetter, than normal weather at 

 Nain (Table 6) was caused by 

 the low pressure system off of 

 the Labrador coast bringing 

 Polar Maritime air to northern 

 Labrador rather than the 

 warmer, drier, continental air 

 usually influencing the region. 



June: With the Bermuda High 

 still farther west than normal 

 in June, the flow of air to New- 

 foundland was more out the 

 west than normal (Figure 8). 

 This brought cooler, drier, 

 continental air to Newfoundland 

 rather than the warm, moist, 

 maritime air usually coming to 

 the region from south. This 

 resulted in cooler, drier, than 

 normal weather in St. John's 

 and Gander (Table 6). Labra- 

 dor was also under the influ- 

 ence of the continental air 

 mass, as it usually is, and 

 nearly normal conditions were 

 reported in Nain and Goose Bay. 



July: The pressure distribu- 

 tion in July was nearly normal 

 (Figure 9). This distribution 

 brought normal temperatures 

 to Newfoundland (Table 6). 

 The colder, wetter, than nor- 

 mal conditions in northern 

 Labrador were caused by the 

 area of low pressure off of 

 Greenland bringing the cold, 

 but wet, Polar Maritime air to 

 the region rather than the 

 warmer, drier, continental air 

 which normally influences 

 northern Labrador in July. 



August: A low pressure 

 trough formed north of Labra- 

 dor in August (Figure 10). The 

 resulting flow was northerly, 

 rather than the the normal 

 southwesterly flow. This 

 caused conditions in Newfound- 

 land and southern Labrador to 

 be colder and drier than normal 

 (Table 6). 



September: September saw 

 the return of the Icelandic Low, 

 deeper than normal, and the di- 

 minishing of the Bermuda High 

 (Figure 11). The westerly 

 flow over Newfoundland and 

 Labrador was nearly normal. 

 Conditions on Newfoundland 

 were colder than normal, while 

 the conditions on Labrador 

 were warmer than normal 

 (Table 6). 



NOTE: Temperature and 

 precipitation data for Nain, 

 Labrador, are compared to 

 1985 values in Table 6. The 

 reporting station at Hopedale, 

 Labrador, was closed in 1984 

 and the Nain station opened. A 

 historical mean for Nain does 

 not exist. 



14 



