Expectations become reality with the current hefty eastern low.
YOW sets a new daily record for the 5th of May with 40.4mm, crushing the previous benchmark of 24.6mm in 1985. Total monthly rainfall is now 90mm vs an average value of 80.1mm and that’s with less than a week in the rear-view.
As of today’s 5 AM update rainfall warnings and SWS remain in place for a swath of E ON into QC and also farther east through the Maritimes.
Daily records were also broken at YHM (21.6mm vs 2003’s 21mm), YYZ (22.2mm vs 2003’s 21.4mm) and YUL (22mm vs 1990’s 12.8mm). Monthly totals are now 74.8mm (vs 78.7mm total May average) at YHM, 62.8mm (74.3mm) at YYZ and 59.6mm (81.2mm) at YUL.
The latest summary from EC:
Weather summary for Ontario and the National Capital Region updated by Environment Canada at 8:17 p.m. EDT Saturday 6 May 2017. Discussion. Rain event finally winding down across southern Ontario. A large moisture laden low pressure area which came from Texas is now tracking into Quebec. This has resulted in a prolonged significant rainfall event for almost all of Southern Ontario, triggering widespread rainfall warnings. Total rainfall amounts of 25 millimetres or more as of 8 PM (unless otherwise noted) are shown below. * implies a volunteer observation. Southwestern Ontario. Windsor Airport 48.6 LaSalle 47.0 as of 10 AM Saturday * Belle River 69.4 as of 6 PM Friday * Kingsville 46.4 as of 3.25 PM Friday * Chatham 51.5 as of 8 PM Friday Ridgetown 53.6 Harrow 50.0 Sarnia Airport 35.0 London Airport 47.1 Delhi 48.7 Woodstock 36.2 as of 3.10 PM Friday * Waterloo-Wellington 56.0 Kitchener Stanley Park 56.0 as of 6 PM Saturday * Mount Forest 47.4 Mono Centre 50.7 Golden Horseshoe Hamilton Airport 55.2 Hamilton Botanical Gardens 59.1 Vineland 57.7 Grimsby 65.8 as of 9 AM * Port Weller 40.9 Welland-Pelham 55.7 Fort Erie 44.2 as of 4 PM Friday * Toronto Pearson 43.2 Toronto North York 35.8 as of 4.45 PM Friday * Downtown Toronto 52.3 Toronto Billy Bishop 48.9 Toronto Buttonville 45.7 Oshawa 52.9 Central Ontario Collingwood 40.5 Barrie 42.3 Orillia 42.4 as of 6 AM * C.F.B. Borden 34.5 Muskoka 36.6 Algonquin Park East Gate 40.7 Eastern Ontario Petawawa 43.0 Bancroft 52.1 Tapley 45.8 as of 7 PM Friday * Peterborough 60.8 Trenton 90.0 Near Trenton 86.9 as of 8 AM Saturday * Cobourg 71.8 Point Petre 63.4 Kingston 70.8 Northwest of Kingston 7km: 81.0 as of 8 AM Saturday * Brockville 57.5 Kemptville 63.3 Ottawa Airport 62.2 Cornwall 26 as of 11 PM Friday * Carleton Place 54.4 as of 8 AM Saturday * Perth 54.9 as of 8 AM Saturday * Please note that this summary may contain preliminary or unofficial information and does not constitute a complete or final report. End/OSPC
Weather summary for Quebec issued by Environment Canada at 10:13 a.m. EDT Sunday 7 May 2017. Discussion. An intense low pressure system is affecting the province of Quebec since Friday. The following is a summary of rainfall amounts received since Friday 6:00 am in millimetres. Metro Montréal - Laval: 30-45 Vaudreuil - Soulanges - Huntingdon: 30-45 Richelieu Valley - Saint-Hyacinthe: 20 Lanaudière: 30 Lachute - Saint-Jérôme: 30-50 Laurentians: 30-40 Parc du Mont-Tremblant: 40-50 Upper Gatineau - Lièvre - Papineau: 50-60 Pontiac: 50 Témiscamingue: 15-25 Parent - Gouin Reservoir: 25-30 Mauricie: 25-30 Quebec City: 15-25 La Tuque: 20-30 Charlevoix: 55 Lac St-Jean: 35-45 Ste Anne-des-Monts: 15-20 Restigouche-Bonaventure: 35-45 New Carlisle: 62 Cap d'Espoir: 93 Baie-Comeau: 20 Sept-Îles: 30-50 Port Meunier: 75 Minganie: 90-115 Natashquan: 35 Chevery: 20 Please note that this summary may contain preliminary or unofficial information and does not constitute a complete or final report. End/QSPC
For the Prairies, a burgeoning H5 ridge resulting from the omega block pattern in place over NA drove new daily high temp records.
Weather summary for Alberta updated by Environment Canada at 8:19 p.m. MDT Friday 5 May 2017. Discussion. A warm upper ridge brought well above normal temperatures to much of Alberta today. The following locations set new record high temperatures (temperature values given in degrees Celsius): BROOKS New record of 30.2 Old record of 29.4 set in 1918 Records started in 1912 EDMONTON MUNI New record of 28.9 Old record of 28.3 set in 1911 Records started in 1881 DRUMHELLER New record of 29.7 Old record of 28.0 set in 1990 Records started in 1954 SLAVE LAKE New record of 28.8 Old record of 26.2 set in 1990 Records started in 1923 SUNDRE New record of 25.7 Old record of 25.5 set in 1990 Records started in 1986 VAUXHALL New record of 30.6 Old record of 29.5 set in 1992 Records started in 1914 Please note that this summary may contain preliminary or unofficial information and does not constitute a complete or final report. End/PASPC
Weather summary for Saskatchewan issued by Environment Canada at 6:23 p.m. CST Friday 5 May 2017. Discussion. A very warm and dry southerly flow set up over Saskatchewan today causing a couple of new temperature records to be broken. The following locations set new record high temperatures: KINDERSLEY New record of 31.4 Old record of 30.0 set in 1992 Records started in 1913 LEADER New record of 33.2 Old record of 31.0 set in 1992 Records started in 1924 Please note that this summary may contain preliminary or unofficial information and does not constitute a complete or final report. End/PASPC