Classic, Alberta Clipper pattern over the next week as the polar vortex will drop south into Hudson Bay and force a series of storms southeastward into the eastern Prairies then into eastern Canada and the Northeast U.S.
As is usually the case, these storms move quickly and do not have a lot of moisture but certainly enough to cause some travel delays.
The strong clipper, which has brought damaging winds across the Prairie today, will reach the upper Great Lakes on Thursday and will bring some accumulating snow. The image below shows expected snowfall tonight through the day Thursday. The clipper will steadily weaken Thursday night into Friday.
Speaking of winds... here are some of the highest wind gusts as of Wednesday afternoon across the Prairies....
Lethbridge, AB 113 km/h
La crete, AB 130
Slave Lake 126
Edmonton Municipal Airport 120
Peace River 111
Grand Prairie 107
Edmonton Int'l 106
Fort McMurray 106
I expect to see even higher gusts before the day is done.
Latest sea ice concentration in tenths coverage. As you can see there is a significant concentration of ice now on shallower Lake Erie due to the recent cold outbreak. Image courtesy of the Canada Ice Service.
Overall pattern through the end of the month and perhaps into the first few days of February
The stubborn area of high pressure over the eastern Pacific will re-strengthen over the next couple of days and will likely remain dominant through the end of the month.
This will force most of the precipitation well north of southern BC, leaving much of southwestern Canada fairly dry and mild.
At the same time, the mean jet stream flow will allow waves of cold to come down into the East through the period with the potential for some storm development off the coast.
Keep in mind, this does not mean it will be cold every day in the east through the period. There will likely be some brief warmups before each front that comes through.
Updated look at the long-range and potential El Nino later this year.
Back from Toronto and the snow....
Weekly long range update into the second week of May....
The seasonal updates of the ECMWF and the National Multi-Model Ensemble (NMME) have been released with monthly outlooks for temperature and precipitation.
Update on the long range through early May.
A look at how extensive the cold was in March and an update into the first week of May.