Weather EventApril 13-18
COSPA Radar Summary
Colour Coding used on the maps
Colour coding used within the maps include; Light green = Light rain Dark green = Heavy Rain Light pink = Light freezing rain or freezing drizzle Dark pink = Moderate to heavy freezing rain Light blue = Light snow or ice pellets Dark blue = Moderate or heavy ice pellets or snow White Rings = 50 nautical mile range rings Red letters-YYZ = Airport Center
April 14 Weather Map Summary0700am-Last hour of rain only
April 14 Weather Map Summary0800am-Start of freezing rain
April 14 Weather Map Summary0830am-Beginning of extended moderate freezing rain
April 14 Weather Map Summary 0850am Moderate Ice pellets begin
April 14 Weather Map Summary 0950am Moderate freezing drizzle resumes
April 14 Weather Map Summary 1200pm-extended moderate freezing rain continues
April 14 Weather Map Summary 630pm-Coming out of light freezing rain and entering period of no precipitation
April 15 Weather Map Summary0400am Extended light freezing period rain resumes
April 15 Weather Map Summary 0600am, Heavier freezing rain/drizzle begins
April 15 Weather map summary1000am Lighter freezing drizzle resumes
April 15 Weather Map Summary655pm Light freezing drizzle continued all day
April 16 Weather Map Summary830pm-April 15 returns to straight rain
Weather Event Precipitation Totals
Weather Event Precipitation Types
Following codes were used to describe weather details RA = Rain DZ = Drizzle FZRA = Freezing Rain PL = Ice Pellets FZDZ = Freezing Drizzle SN = Snow RASN = Rain Snow mix
Weather Event Precipitation Totals
Date Time (Z) Accum (mm/6hr) Type
14 April 00-06Z 4mm RA/DZ
06Z-12Z 0.8mm DZ/RA
12Z-18Z 16mm RA/FZRA/PL
18Z-24Z 19mm PL/SN/FZRA
15 April 00-06Z Trace FZRA
06Z-12Z 0.6mm FZRA/PL
12Z-18Z 11mm PL
18Z-24Z 5mm PL/FZRA/FZDZ
16 April 00-06Z 11mm FZRA/RA
06Z-12Z 8mm RA
12Z-18Z 7mm RA
18Z-24Z 3mm RA
17 April 00-06Z 0.8 RASN/SN
06Z-12Z Trace SN