Markham, ON - Another year had passed by. 2007 declared its end on 2 days ago. Earlier today, I looked back to my weather station (which keeps an automatic weather record throughout 2007), and surprisingly it told me the extremes of the year. Recorded as belows:
Highest Temperature: 37.6 C (on August 2, 2007. 14:04 EDT)
Lowest Temperature: -24.4 C (on March 6, 2007. 07:02 EST)
Average Temperature: 6.6 C
Temperature wise, the extremes of this year are way higher or lower than last year. Last year, the highest temperature was 35.5 C. The lowest was -15.5 C.
The average temperature for this year is 6.6 C. The average temperature is much lower than last year, so far, disproving the global warming theory. However, this drop in average temperature might be just a unique case for this year, and may continue to rise next year.
Highest Dewpoint: 22.4 C (on July 9, 2007. 14:27 EDT)
Lowest Dewpoint: -29.8 C (on March 6, 2007. 07:09 EST)
Average Temperature: -3.7 C
Highest Relative Humidity: 92 % (on December 23, 2007. 14:34 EST)
Lowest Relative Humidity: 19 % (on May 5, 2007. 18:28 EDT)
Average Relative Humidity: 55.5 %
Highest Relative Pressure: 1038.3 hPa (on March 29, 2007. 09:33 EST)
Lowest Relative Pressure: 989.5 hPa (on March 2, 2007. 03:27 EST)
Average Relative Pressure: 1013.9 hPa (matches the average pressure on Earth)
Recap for 2007:
January was a mild start to the year. Snowfall retained to below normal values. Temperature hovered around the freezing mark. In fact, we haven't received any winter weather before January 15, 2007. On January 15, 2007, a strong Colorado Low resulted from the clash from frigid arctic air in Hudson Bay to the warm, moist tropical air from the Gulf of Mexico and Atlantic Ocean. On January 15, we're located at the warm front of the system, resulting a prolonged band of ice and freezing rain. It was also the first school bus cancellations of the year in the GTA. In February, things all got changed. Temperature experience a sharp drop, becoming even colder towards the end of the month. Snowfall began to return to normal values. Temperature dropped to the lowest in March. It was way below seasonal. Things warmed up during March Break. April remained mostly seasonal, not many weather stories to talk about. In the beginning of May, the weather followed the pattern in April, that everything remained seasonal. It was not until later in May did we experience a turnaround. In May, we had several heat waves. However, they were all short-lived. The first one was between May 9 to May 12. The daily high in Southern Ontario and Quebec hovered between 25 to 32 C. The second one was the shortest one of all. It lasted for one day. It was on May 15, 2007. A system stroke Southern Ontario on May 14. Along with it, were warm and cold fronts. The warm front came in on May 15, 2007 early in the morning. Strong southernly winds were resulted, dragging the hot air from the Gulf of Mexico. Daily high rocketed to 31 C. Due to the hot air also contained high levels of moisture, humidex values reached to 37 C (100 F). The cold front kicked in later in the evening hours. As a result to the cold front, a strong and severe band of thunderstorms formed. The cold front reached the GTA at around 6 - 7 pm EDT. In one short hour, 60 mm of rain was dumped all over the GTA. Widespread localized flooding was common. Just outside of my home, the intersection was completely flooded. Basement flooding was also prone in Scarborough, Toronto, and area. The cold front also brought follow-up rain for the next 2 days, resulting storm total to 75 mm. May 15 is later declared the wettest day of the year, with the heaviest hourly rain in 2007. The last heat wave of the month was during May 23 to May 26. Daily highs soared to 35 C before the humidex. With the humidex, temperature can easily reach 42 C. During these 3 days, Environment Canada issued the first Smog Advisory in 2007. June's temperature was hovering near to slightly above seasonal. Towards the end of June, another heat wave surged. It was during June 25 to June 28. Daily highs hovered between 30 to 36 C, with humidex easily reaching 44 C. The City of Toronto issued its first Extreme Heat Alert of the year. Environment Canada also issued Smog and Humidex Advisories. Daytime-heating-caused thunderstorms were very common. July was near to slightly above seasonal. The hottest heat wave finally built near the end of July towards the beginning of August as a result of the Bermuda High off the Atlantic Coast. The heat wave lasted from the end of July all the way to August 2. August 2 was the hottest day of the season to the GTA. The temperature soared to a high of 37.6 C at Markham Weather Centre (99.8 F), humidex values up to 44 C. Again, extreme heat alert, smog, and humidex advisories are resulted. August 2 later declared the hottest day of the year. The latter part of August was pretty much seasonal and so is the beginning of September. Towards the second week of September, a strong cold front kicked in to Southern Ontario. Temperature across much of Southern Ontario dropped to a single digit high. In Toronto, daily highs barely made it to 13 C. Communities in the North, such as Sudbury, North Bay, Parry Sound, and parts of Muskoka reported unofficial observation of snowflakes. Things warmed up by the third week of September. October remained seasonal. In the first week of November, a cold surge of Arctic Air kicked up the first lake effect snowsqualls. Snowbelt areas received an upwards of 15 cm. Due to the abnormal high snowfall in the snowbelt areas, ski slopes opened earlier than usual. In Markham, Ontario, however, we only received a trace accumulation of snow. The first unofficial snowflake in Markham, Ontario fell at 22:46 EST, November 5, 2007. The latter part of November and early parts of December's temperature remained seasonal to slightly below. In Mid-December, Sub Tropical Storm Olga merged with a developing Colorado Low, creating a monster Nor'Easter. Although that Nor'Easter did not hit much of Southern Ontario, Ontario received a lot of snow. Most areas received 30-40 cm (about 1 feet, maybe a little more), some localities saw 40-50 cm. Everyone is excited for a white Christmas with so much snow had fallen. However, near Christmas Eve, a warm surge came, temperature rose to 4 C, combined with falling rain, melting majority of the snow. The Christmas was still white, though much less snow than expected. Patches of green could be witnessed.
On December 27 morning, our great weather friend, Bruce, otherwise known here as Wizard1, died of 2 heart attacks. Let us mourn for him. (This counts as a weather story too for the Wunderground community)
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