MONTHLY CLIMATOLOGICAL SUMMARY for APR. 2002 NAME: Charleswood CITY: Winnipeg STATE: MB, CANADA ELEV: 235 m LAT: 49° 51' 00" N LONG: 97° 16' 00" W TEMPERATURE (°C), RAIN (mm), SNOW (cm), WIND SPEED (km/h) HEAT AVG MEAN DEG WIND DOM DAY TEMP HIGH TIME LOW TIME DAYS SNOW RAIN SPEED HIGH TIME DIR ------------------------------------------------------------------------------------ 1 -4.4 0.8 1:00p -9.3 2:30a 22.5 0.0 0.0 5.8 32.2 10:00p N 2 -6.9 -4.8 2:30p -9.2 12:00m 25.3 0.6 0.0 11.6 41.8 12:30p N 3 -7.1 -3.0 4:30p -11.6 6:30a 25.6 0.0 0.0 3.1 20.9 2:30a N 4 -5.1 -0.1 1:00p -9.9 1:30a 23.3 0.0 0.0 1.6 19.3 10:15a N 5 -5.0 0.7 2:30p -11.6 6:15a 23.7 0.0 0.0 2.7 29.0 11:00a N 6 -0.1 4.6 3:45p -5.2 12:15a 18.6 0.0 0.0 6.3 38.6 4:15p SE 7 -1.8 0.8 4:00p -3.0 6:45a 19.4 0.6 0.0 9.7 38.6 4:45a N 8 -2.0 2.3 4:00p -5.9 12:00m 20.1 0.8 0.0 4.8 25.7 3:15a N 9 1.2 8.4 4:45p -5.6 12:15a 16.9 0.0 0.0 4.7 32.2 3:30p SSW 10 3.3 8.7 4:45p -2.8 6:30a 15.3 0.0 0.0 3.8 29.0 2:15p ENE 11 6.4 13.5 5:15p 1.2 12:00m 10.9 0.0 0.0 1.9 19.3 10:45a SE 12 9.5 22.3 3:15p -1.4 7:15a 7.8 0.0 0.0 4.6 27.4 2:00p N 13 10.2 19.7 3:15p 0.1 6:45a 8.4 0.0 0.0 9.0 48.3 2:45p S 14 13.3 18.9 3:30p 8.4 7:30a 4.6 0.0 3.0 4.2 35.4 12:30a N 15 12.7 17.6 5:00p 8.5 5:30a 5.2 0.0 1.5 3.6 27.4 11:30a N 16 11.3 17.3 1:45p 6.2 12:00m 6.5 0.0 13.0 10.2 38.6 11:45a N 17 6.0 13.7 4:30p 0.1 7:00a 11.4 2.0 1.6 4.2 33.8 5:30p N 18 2.2 5.7 12:30a -1.5 12:00m 16.2 0.0 0.0 11.6 46.7 3:15p N 19 -0.9 4.2 3:00p -4.7 6:30a 18.5 0.0 0.0 7.0 41.8 1:15p N 20 -0.6 5.2 4:00p -8.3 7:15a 19.9 0.0 0.0 2.3 20.9 3:30p N 21 3.6 10.3 4:45p -3.5 5:45a 14.9 0.0 0.0 3.5 27.4 12:15p S 22 4.2 10.1 6:00p -1.8 6:45a 14.1 0.0 0.0 12.8 49.9 1:15p S 23 10.1 21.2 1:15p 3.1 6:15a 6.1 0.0 1.0 13.8 51.5 7:30a S 24 -0.2 5.1 12:15a -4.2 11:45p 17.8 1.0 1.5 9.9 43.5 5:30a N 25 -3.1 2.5 4:00p -7.6 7:30a 20.8 0.4 0.0 11.8 49.9 2:00p N 26 -0.3 6.2 3:30p -8.2 6:15a 19.3 0.0 0.0 2.5 20.9 12:15p N 27 2.9 7.8 1:00p -1.8 4:00a 15.3 0.0 0.0 2.6 19.3 11:30a SE 28 2.5 5.5 11:00a -2.4 6:15a 16.8 0.0 3.3 8.6 45.1 4:30p S 29 5.0 9.5 2:45p -0.6 12:00m 13.8 0.0 0.3 7.3 51.5 3:30p N 30 4.5 12.2 2:30p -3.1 6:45a 13.8 0.0 0.0 3.0 27.4 12:30p N ------------------------------------------------------------------------------------- 2.4 22.3 12 -11.6 3 472.7 5.4 25.2 6.3 51.5 23 N Max >= 32.0: 0 Max >= 20.0: 2 Max >= 10.0: 11 Max <= 0.0: 3 Min <= 0.0: 23 Min <= -18.0: 0 Max Pcpn: 13.0 mm ON 04/16/02 Days of Pcpn: 12 (> .2 mm) 5 (> 2 mm) 0 (> 20 mm) APRIL 2002 HIGHLIGHTS The below normal temperature regime that characterized March persisted through much of April as residents of the Prairies began to wonder if spring was ever going to arrive this year. Mean monthly temperatures at my station were 1.4 deg below normal for April.. a somewhat misleading statistic thanks to a 7 day warm spell in mid April that masked the more prevalent cold pattern for the month. In fact, 22 out of the 30 days were below normal.. which continues a trend that became established in the last week of February over the Prairies. In the period from Feb 24 - April 30, only 13 of 66 days have seen above normal temperatures in Winnipeg, or about 1 in 5. The only warm weather for the month was a warm spell from April 11th to 17th during which time temperatures climbed to a record high of 22 degrees on the 12th. (old record 21 in 1931) After the 17th, daily highs struggled to reach the 10 degree mark, except for a 21 degree day on April 23rd. Precipitation was a little below normal.. with 30 mm recorded at my station (normal 36 mm) The bulk of the precipitation fell during the season's first thunderstorm on the evening of the 16th when 13.0 mm fell in just over 30 minutes along with 1 cm hail. Snow for the month totalled 5.4 cm falling on 6 days.. the latest occurrence on April 25th. Persistent snowcover was gone by April 8th. But as bad as this April has been, things have been worse. In April 1996, the average high was only 3.1 degrees, with a high of only 12.4 for the entire month. April 1956 saw only 1 daily max above 10 degrees all month, with a monthly max of only 11.1C. And after a cool April in 1979, the first 11 days of May 1979 saw highs only in the single digits with some snow observed on 10 of the 11 days. Finally, consider the poor folks in Edmonton. Since Feb 23rd, they have had only 7 days above normal (3 in March, 4 in April) and have yet to hit the 20 degree mark this year.