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David Phillips of Environment Canada is basically a nice guy who sympathizes with us during this wet, awful July.
But he still wants more rain. Just a little more.
“I will be cheering for another 4.7 mm of rain to fall between midnight (Monday night) and the end of July 31 to make this the wettest month ever in Ottawa’s weather history,” he wrote Tuesday morning, en route to his dentist.
Phillips already decreed this spring and summer “The Big Wet” a couple of weeks back. But he never expected how much worse it would become.
He summed it up like this.
Monday’s 79.0 millimetres of rain “was a record for July 24 in Ottawa no matter which station you examine. At the airport the previous record was 59.0 mm on July 24, 1987.”
“(Monday’s) rainfall was the heaviest July single day rainfall ever. Previous July one-day record was 69.6 mm on July 9, 1967; at CDA (a measuring station at the Central Experimental Farm) it was 74.2 mm on July 11, 1899; and at Ottawa (an older station opened in 1882) it was 57.4 mm on July 17, 1900.”
This month’s total rainfall so far is 245.6 mm, but that only includes rain through the end of Monday night. Normal July rainfall is 91.9 mm. This month’s rainfall with seven days to go is the wettest July ever at the airport. The previous wettest July was 243.6 mm in 2009.
Not only that, it has been the wettest of any month ever, defined as a combination of rain plus melted snow, at the airport with records back to 1938. But the little Ottawa CDA station at the Farm had one wetter month back in July, 1899, with 250.2 mm of rain. That’s the one old record that Phillips says is still standing, the one we would break with another 4.7 mm.
“At the airport Monday’s 79 mm was the fourth wettest day ever.
“Rainfall to date from January 1 to July 24 has been 795.4 mm. The previous rainiest January 1 to July 31 (end of month) was 560 mm in 2009 for all stations.
“The total rainfall to date is 795.4 mm. The average yearly rainfall (January 1 to December 31) is 758.2 mm. Already a year’s total with five months to go.”
Meanwhile, in an unusual measure, the National Capital Commission has closed the Rideau Canal between Newboro, about 120 kilometres south of Ottawa, and Kingston due to high water.
Urgent: due to high water levels, Newboro to Kingston Mills is now closed to navigation until further notice.
— Rideau Canal (@RideauCanalNHS) July 25, 2017
Still, there was good news for those still trying to get warm and dry following Monday’s brutal conditions.
Meanwhile, Tuesday is expected to clear sometime in the afternoon, with a 60-per-cent chance of showers this morning. The high should be around 23 C a little warmer under the humidex.
Tuesday night should see clearing with fog patches after midnight and a low around 13.
Clouds and fog patches should be back Wednesday, with a high of about 24 C, 29 with the humidity.
There’s a 40-per-cent chance of showers Wednesday night, with a low of 17 C.
Unfortunately, it looks like showers will be back Thursday, with a high of 26 C. Thursday’s low should be around 14 C.
But the skies are expected to clear Friday, and through the weekend, to greet the invasion of La Machine’s mechano-monsters, that will roam the downtown core looking for trouble.
Highs are expected to be low seasonable, ranging from 24 C to about 28 C, and no rain in the forecast.
There will be the occasional burst of dragon-horse fire, however.
tspears@postmedia.com
twitter.com/TomSpears1
查看原文...
But he still wants more rain. Just a little more.
“I will be cheering for another 4.7 mm of rain to fall between midnight (Monday night) and the end of July 31 to make this the wettest month ever in Ottawa’s weather history,” he wrote Tuesday morning, en route to his dentist.
Phillips already decreed this spring and summer “The Big Wet” a couple of weeks back. But he never expected how much worse it would become.
He summed it up like this.
Monday’s 79.0 millimetres of rain “was a record for July 24 in Ottawa no matter which station you examine. At the airport the previous record was 59.0 mm on July 24, 1987.”
“(Monday’s) rainfall was the heaviest July single day rainfall ever. Previous July one-day record was 69.6 mm on July 9, 1967; at CDA (a measuring station at the Central Experimental Farm) it was 74.2 mm on July 11, 1899; and at Ottawa (an older station opened in 1882) it was 57.4 mm on July 17, 1900.”
This month’s total rainfall so far is 245.6 mm, but that only includes rain through the end of Monday night. Normal July rainfall is 91.9 mm. This month’s rainfall with seven days to go is the wettest July ever at the airport. The previous wettest July was 243.6 mm in 2009.
Not only that, it has been the wettest of any month ever, defined as a combination of rain plus melted snow, at the airport with records back to 1938. But the little Ottawa CDA station at the Farm had one wetter month back in July, 1899, with 250.2 mm of rain. That’s the one old record that Phillips says is still standing, the one we would break with another 4.7 mm.
“At the airport Monday’s 79 mm was the fourth wettest day ever.
“Rainfall to date from January 1 to July 24 has been 795.4 mm. The previous rainiest January 1 to July 31 (end of month) was 560 mm in 2009 for all stations.
“The total rainfall to date is 795.4 mm. The average yearly rainfall (January 1 to December 31) is 758.2 mm. Already a year’s total with five months to go.”
Meanwhile, in an unusual measure, the National Capital Commission has closed the Rideau Canal between Newboro, about 120 kilometres south of Ottawa, and Kingston due to high water.
Urgent: due to high water levels, Newboro to Kingston Mills is now closed to navigation until further notice.
— Rideau Canal (@RideauCanalNHS) July 25, 2017
Still, there was good news for those still trying to get warm and dry following Monday’s brutal conditions.
Meanwhile, Tuesday is expected to clear sometime in the afternoon, with a 60-per-cent chance of showers this morning. The high should be around 23 C a little warmer under the humidex.
Tuesday night should see clearing with fog patches after midnight and a low around 13.
Clouds and fog patches should be back Wednesday, with a high of about 24 C, 29 with the humidity.
There’s a 40-per-cent chance of showers Wednesday night, with a low of 17 C.
Unfortunately, it looks like showers will be back Thursday, with a high of 26 C. Thursday’s low should be around 14 C.
But the skies are expected to clear Friday, and through the weekend, to greet the invasion of La Machine’s mechano-monsters, that will roam the downtown core looking for trouble.
Highs are expected to be low seasonable, ranging from 24 C to about 28 C, and no rain in the forecast.
There will be the occasional burst of dragon-horse fire, however.
tspears@postmedia.com
twitter.com/TomSpears1
查看原文...
