Some Tape Minimum Temperatures This Morn In Addition To Dry Out May
Walking exterior early on this morn it was evident that something was up. It felt actually warm.
In fact, the minimum temperatures at locations roughly the percentage were warm amongst upper 50s at several locations, amongst some stations exclusively dropping to the mid-60s. Sea-Tac Airport had their tape high cold for the engagement (58F). In fact, it was the highest depression for whatever engagement during the offset one-half of May.
What was the argue for this morn warmth? Well, nosotros started out amongst close tape warm air aloft for the engagement because of a ridge of high pressure level overhead. To present this, hither are the climatological temperatures inward the lower atmosphere (925 hPa pressure, nigh 3000 ft) at Quillayute, on the WA coast, amongst today's observation at v AM shown past times the silverish circle. The reddish trouble shows the tape for each date. The temps aloft were close tape levels.
But warm temperatures aloft are non plenty since infrared cooling to infinite from the surface volition drive low-level temperatures to fall, working against whatever record.
But in that place was some other subdivision that worked against this nighttime cooling: lots of H2O vapor inward the lower atmosphere. A skilful stair out of H2O vapor content is the dew indicate temperature, amongst higher dew points indicating to a greater extent than H2O vapor. So hither is the climatology of surface dew indicate at Quillayute, amongst the circle indicating today's values--quite high...nearly at tape levels.
Water vapor is a really active absorber too emitter inward the infrared too helps to proceed the temperatures upwards at night. That is why really dry out deserts oftentimes larn chilly at nighttime fifty-fifty when the temperatures are extremely warm during the day. So amongst lots of H2O vapor, the normal nighttime cooling was lessened.
One subdivision that helped amongst keeping the wet high was the lack of offshore-directed, easterly winds. Nothing dries out the air similar rigid downslope, easterly flow. Only when downslope, easterly menstruum is very, really rigid tin it create tape high temperatures.
One to a greater extent than thing....this has been an extraordinarily dry out May too thence far. Seattle has exclusively received .08 inches equally of today...and nosotros are halfway through the month. The residuum of the calendar month looks fairly dry, amongst the weather.com forecast through May 28th never showing to a greater extent than than a 20% probability of pelting for whatever day. The driest May on tape at Sea-Tac exclusively received .12 inches. So maybe nosotros convey a gamble to vanquish the record.
Ironically, the morn high resolution WRF model simulation showed the greatest pelting activity over northern CA too southern Oregon, which is odd this fourth dimension of the year. Good for topping off the reservoirs inward northern CA.
In fact, the minimum temperatures at locations roughly the percentage were warm amongst upper 50s at several locations, amongst some stations exclusively dropping to the mid-60s. Sea-Tac Airport had their tape high cold for the engagement (58F). In fact, it was the highest depression for whatever engagement during the offset one-half of May.
What was the argue for this morn warmth? Well, nosotros started out amongst close tape warm air aloft for the engagement because of a ridge of high pressure level overhead. To present this, hither are the climatological temperatures inward the lower atmosphere (925 hPa pressure, nigh 3000 ft) at Quillayute, on the WA coast, amongst today's observation at v AM shown past times the silverish circle. The reddish trouble shows the tape for each date. The temps aloft were close tape levels.
But warm temperatures aloft are non plenty since infrared cooling to infinite from the surface volition drive low-level temperatures to fall, working against whatever record.
But in that place was some other subdivision that worked against this nighttime cooling: lots of H2O vapor inward the lower atmosphere. A skilful stair out of H2O vapor content is the dew indicate temperature, amongst higher dew points indicating to a greater extent than H2O vapor. So hither is the climatology of surface dew indicate at Quillayute, amongst the circle indicating today's values--quite high...nearly at tape levels.
One subdivision that helped amongst keeping the wet high was the lack of offshore-directed, easterly winds. Nothing dries out the air similar rigid downslope, easterly flow. Only when downslope, easterly menstruum is very, really rigid tin it create tape high temperatures.
One to a greater extent than thing....this has been an extraordinarily dry out May too thence far. Seattle has exclusively received .08 inches equally of today...and nosotros are halfway through the month. The residuum of the calendar month looks fairly dry, amongst the weather.com forecast through May 28th never showing to a greater extent than than a 20% probability of pelting for whatever day. The driest May on tape at Sea-Tac exclusively received .12 inches. So maybe nosotros convey a gamble to vanquish the record.
Ironically, the morn high resolution WRF model simulation showed the greatest pelting activity over northern CA too southern Oregon, which is odd this fourth dimension of the year. Good for topping off the reservoirs inward northern CA.
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