October 25, 2017 03:13 PM
Does a storm a half a world away impact our weather here in Rochester?
The answer is yes, specifically the recent Typhoon Lan that moved over Japan. At its peak, this was considered a super typhoon with winds sustained up to 155mph. It made landfall in Japan over Honshu still as a powerful typhoon resulting in at least five deaths and nearly 200 injuries across the country.
Winds were reported over 100mph on Miyake Island south of Tokyo and 30-plus inches of rainfall were seen in just 48 hours in Wakayama Prefecture.
Now how does this storm now tracking into the northern Pacific impact us here in Rochester? First remember what It is, a tropical system. Its source region is to the south and as it moved north it pushed warm air along with it.
Now in the northern Pacific, warm air expands and creates a ridge aloft in the atmosphere. But what goes up comes down right? Further east off the west coast of Canada we are seeing an Aleutian low form, then east of that a ridge over the western half of the USA and finally a deep highly amplified trough over our area here in the North East U.S. Something we have not seen thus far this autumn.
Think of a rope and if you snap it really fast it creates that ripple effect out. This is the same dynamics but on a much larger scale.
As the temperature pattern changes to the colder here in Rochester, it is having a reverse impact on places like southern California. For baseball fans, this is very important. We are looking at one of the hottest World Series games on record with temperatures over 100 degrees. Kind of interesting how our cool down in Rochester and a heat wave in California can all be traced back to a typhoon in Japan.
Updated: October 25, 2017 03:13 PM
Created: October 23, 2017 07:48 PM
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