Buh Bye Deep Freeze!

     After almost 2 months of what has felt like never-ending frigid weather, a pattern change is finally in the works.

     A strong southerly wind will develop tonight in the Red River Valley, and that along with some light snow will create blowing snow on highways. Something to keep in mind if travelling tonight or tomorrow morning. Winds should gradually diminish tomorrow.

     The big story will be warmer temperatures as we finally reach above normal. Temperatures between -8°C and -10°C tomorrow, with highs reaching the mid to high minus single digits Friday. The warmer conditions are expected to continue this weekend.

     However, a stronger clipper system is expected to move into Manitoba Sunday. A major snowstorm is not expected for southern Manitoba with the bulk of the snow remaining to our north into central and northern Manitoba. However, some snow and perhaps even some ice pellets or freezing rain is still possible, particularly early in the day. Significant accumulations not expected at this time with generally less than 5 cm. A fresh shot of cold air will be ushered behind the system, but it is not expected to be nearly as cold as what we've seen of late. Generally warmer temperatures than what we've seen of late are expected next week as Old Man Winter loosens his grip.

Coldest Day in a Decade

     With a low of -38.0°C yesterday morning at Winnipeg airport, it was the coldest temperature recorded since February 2007 when we reached -41.7°C on February 5.

     In addition, the high yesterday was a measly -30.2°C, the coldest daytime high since January 30, 2004 when we only reached -30.8°C. Yesterday's high also broke a record low maximum for the day, breaking the old record of over 100 years of -30.0°C in 1912.

     Other lows across southern Manitoba yesterday morning included:

Sprague -41.8°C
McCreary -37.9°C
Beausejour -37.3°C (Mb ag station)
Minnedosa -36.7°C (Mb ag station)

     A minimum wind chill value of -50.7 was also recorded at Winnipeg airport yesterday morning.

     We will barely exceed -30°C today as the cold snap holds for another few days. The warmup begins Wednesday night with a strong southerly flow and rising temperatures. We will likely see some days in the minus single digits later in the week. Wont that feel nice!

The #1 Weather Story of 2013 in The Winnipeg Area

#1 - The winter that overstayed its arrival; what a difference a year makes! 

 

Early April 2012 vs. 2013.. budding trees in 2012; still shoveling in 2013

     Spring 2013 was the polar opposite of spring 2012. In Winnipeg, 2012 featured the 2nd warmest spring on record while spring 2013 tied 7th coldest in the last century (and tied 18th coldest since 1872). Most impressive, March 2013 was a staggering 13 degrees colder than March 2012! April was worse, tying 3rd coldest on record and coldest in over 100 years.

     Out west it was even colder than Winnipeg with Brandon recording its coldest April on record since records began in 1890. The average mean of -3.5°C broke the old record set in 1893 by 0.6 degrees! Spring there ended up 3rd coldest and coldest since 1907. Remarkably, this follows the 2nd warmest spring last year.

     However, the story was more the consistency of the cold weather, rather than how extreme the cold was. Not a single record low was broken in Winnipeg. Instead, a remarkable 47-consecutive days of below normal temperatures occurred.

     Numerous milestones were reached when it comes to temperatures:

• Only 2 days exceeded 0°C in March, tying with 3 other years for 3rd least since 1872. Normally we'd see 16 days above 0°C in March.
• Did not reach first 5°C of the year until April 24, the latest on record. This beat the old record by more than a week! Normal is February 25.
• Did not reach first 10°C of the year until April 26, 2nd latest on record. Normal is April 1.
• Low of -20.2°C April 9 was the coldest in April since 1997 and tied 3rd latest occurrence of -20°C. Latest was April 12, 1881.

     The cold weather combined with a snowy winter to create one of the slowest and latest snow melts in recent memory. Snow depth entering into April was 40 cm and was still 30 cm by mid month. The winter snow pack did not finally reach a depth of a trace cm until April 27, the latest on record since 1955. This was also a month later than the normal of March 25.

     Other impressive milestones when it comes to snow were set:

• Average snow depth of 48 cm in March, 3rd deepest since records began in 1955. Normal is 14 cm.
• Average snow depth of 24.7 cm in April, 2nd deepest on record. Normal is just 2 cm!
• We had the deepest winter snow pack for so late in the season on 4 occasions (April 22, 23, 24 and 25)
• Winter snow pack (excluding trace cm as winter snow pack) lasted 168 days from Nov 10, 2012 to Apr 26, 2013 (46% of a full year)! This was the 3rd longest lasting winter snow pack since 1955. Normal is 119 days.

     Another consequence of the late spring was a delayed ice melt on Manitoba's lakes. There was still some ice on some lakes by the May long weekend.