Wednesday, 30 January 2019, 21:30 CET
Cold spell - Warning
Northern USA, Canada
Issued: Wednesday, 30 January 2019, 21:30 CET
Stratospheric warming leads to arctic outbreak over Canada and northern USA. Temperatures down to -40°C and below.
Windchill temperatures down to -55°C and below. Lake effect may lead to enormous snow amounts.
30-31 January 2019
Another arctic Outbreak, caused by a section of the polar vortex reaching far to the south, causes historically low
temperatures in Canada and the USA. With Temperatures down to -40°C the Midwest and Northeast are particularly affected. The windchill
temperatures are even lower because of wind velocities up to 60 kph.
Minimum Temperatures (30 Jan, 18 UTC),
data source: National Weather Service
| Location |
12h Minimum Temperatur in °C
30 Jan, 18 UTC |
Collins Bay (Canada)
Carberry (Canada)
Yorkton (Canada)
Fargo (North Dakota)
Rochester (Minnesota)
Sioux Falls (South Dakota)
Waterloo (Iowa)
Minneapolis (Minnesota)
|
-47.0
-44.2
-40.3
-36.1
-33.9
-33.8
-33.3
-31.7
|
|
The high temperature difference between air and water leads to strong lake effect precipitation especially on the eastern
coasts of Lake Superior, Lake Michigan, Lake Hudson and Lake Erie. Although the arctic air hardly brings any moisture,
the stations Traverse City-Cherr and Muskegon in the east of Lake Michigan registered 30 cm of fresh snow since January 27.
Total snow amount (30 Jan, 18 UTC),
data source: National Weather Service
| Location |
Total snow amount in cm
30 Jan, 18 UTC |
Lake Superior Provincial Park (Canada)
Wawa (Canada)
Tobermory (Canada)
Traverse City-Cherr (Minnesota)
Muskegon (Minnesota)
Chicago (Illinois)
|
80
69
51
41
38
20
|
|
Not only the cold temperatures are remarkable, but also the temperature fluctuations. The station Chicago recorded a temperature
of 2°C at 12 UTC on 28 January. 48 hours later the temperature was -27°C. According to the latest forecasts, the temperature will
be -5°C 48 hours later and +4°C 96 hours later. A similar situation shows the city of Minneapolis, where the temperature will rise
from -30°C on 30 January at 12 UTC to +3°C on 03 February at 12 UTC.
Issued: Jan 30, 2019, 21:30 CET
FS
|
