Warmest May On Tape For Seattle, Tied For Driest May
Weatherwise, nosotros but went through what was likely the finest May at Seattle for the entire current of tape (from 1894 to today).
The monthly average was 61F, beating out the 60.5 inwards 1940 (see below). In precipitation, the monthly full was .12 inches tying the sum observed inwards 1992.
It was a existent nail-biter yesterday but about dinner fourth dimension every bit a line of piece of job of showers went through...fortunately, at that spot was alone a draw of rain...which doesn't count.
But at that spot is more: the average temperature this May was higher than the normal average for June (59.5F), this has happened alone ane time before. And every solar daytime this May reached 60F, something that alone happened ane time inwards the climatological record--in 1947.
Why such a squeamish month? Because at that spot was a persistent ridge of high pull per unit of measurement area over as well as to the northward of Washington.
To illustrate this, hither is the divergence from normal of the heights at the 500 hPa pull per unit of measurement area degree (around 18,000 ft). The yellowish blob northward as well as eastward of western Washington shows a pump of above-normal heights... known every bit a ridge of high pressure. Such a ridge of high pull per unit of measurement area is associated amongst warm, sinking air.
The weekend should last pretty normal-- middle to high 60s, considerable clouds, as well as a few sprinkles, through mid-day Sunday, followed past times an increasing shower run a peril after inwards the day.
The monthly average was 61F, beating out the 60.5 inwards 1940 (see below). In precipitation, the monthly full was .12 inches tying the sum observed inwards 1992.
It was a existent nail-biter yesterday but about dinner fourth dimension every bit a line of piece of job of showers went through...fortunately, at that spot was alone a draw of rain...which doesn't count.
But at that spot is more: the average temperature this May was higher than the normal average for June (59.5F), this has happened alone ane time before. And every solar daytime this May reached 60F, something that alone happened ane time inwards the climatological record--in 1947.
Why such a squeamish month? Because at that spot was a persistent ridge of high pull per unit of measurement area over as well as to the northward of Washington.
To illustrate this, hither is the divergence from normal of the heights at the 500 hPa pull per unit of measurement area degree (around 18,000 ft). The yellowish blob northward as well as eastward of western Washington shows a pump of above-normal heights... known every bit a ridge of high pressure. Such a ridge of high pull per unit of measurement area is associated amongst warm, sinking air.
The weekend should last pretty normal-- middle to high 60s, considerable clouds, as well as a few sprinkles, through mid-day Sunday, followed past times an increasing shower run a peril after inwards the day.
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