[6] The system raced across the north Atlantic, deepening rapidly to 956 mb (28.2 inHg) by Christmas Day.

[13] Patrick (Dagmar) arrived in Norway as a southwesterly storm, with windspeeds estimated to be on average 110 km/h (30 m/s; 67 mph) on the coast.

Up to 160 km/h (44 m/s; 98 mph) 10 minute sustained winds was measured at Kråkenes Lighthouse, Sogn og Fjordane, before the anemometer broke.

[22][23] Dagmar knocked out 390 Telenor communication masts leaving 40,000 customers without mobile or landline telephone connections.

[25] The Swedish transport authority suspended all train traffic north of Gävle at 20:00 on Christmas Day in preparation.

[27] 1.2 million Swedish Kronor of damage was caused in Ljusdal when sixteen rail wagons weighing 313 tonnes (345 short tons) were blown along the railway for 500 m (1,600 ft) until they derailed on a road intersection.

[1][37] The Saint Petersburg Dam gates were closed to protect the city, preventing 15 ships from entering the port.

[38] Leningrad Nuclear Power Plant was also affected, as algae and mud stirred up by the storm were sucked into the cooling system, resulting in one of the generators being shut down.