Spring 2015 thread (Northern Hemisphere) (climate, warmest, record, temp)
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I always forget to check. That's pretty high for this time of year at least for here.
Mid 50s isn't dry for May but let me check around some NWS discussions. If I find anything I'll post. They did increase this week with this SW flow we have.
I assume it's the High Pressure keeping things drier that it could of been but we will be in the 60s this weekend.
Mid 50s with temps in the mid 80s is pretty dry at any time. But not rare in spring.
Current dewpoint departures showing above normal but I see your closer to normal. Normal is low 50s beginning of May. For here 40s is normal so today definitely isn't dry. HOURLY DEPARTURE FROM 1981-2010 AVG
Quote:
Just trying to understand what all plays into it.
Like what happened differently today than in the second example?
Hmm. May 11, 2011 Looks like that day there was a front nearby you and precip around the area past 24hrs. Maybe kept atmosphere a bit more juiced. Maybe Leaning back to my High Pressure reason for today. Drier and stronger? Pressure was 1012mb that day and 1019mb today?
Also with link below you were are the top of the rounding ridge as opposed to right in the center.
Also, you had gotten 5 inches of rain previous 10 days so ground was still freshly moist that day in 2011 . (over 2 inches 5 days prior). This year only 0.17" last 10 days
Current dewpoint departures showing above normal but I see your closer to normal. Normal is low 50s beginning of May. For here 40s is normal so today definitely isn't dry. HOURLY DEPARTURE FROM 1981-2010 AVG
Cool check.
Hmm. May 11, 2011 Looks like that day there was a front nearby you and precip around the area past 24hrs. Maybe kept atmosphere a bit more juiced. Maybe Leaning back to my High Pressure reason for today. Drier and stronger? Pressure was 1012mb that day and 1019mb today?
Also with link below you were are the top of the rounding ridge as opposed to right in the center.
Also, you had gotten over 5 inches of rain the week before so ground was still freshly moist.
Current dewpoint departures showing above normal but I see your closer to normal. Normal is low 50s beginning of May. For here 40s is normal so today definitely isn't dry. HOURLY DEPARTURE FROM 1981-2010 AVG
I know but the average high today is 72F and it's 86. So the relative humidity is still rather dry.
Calling for improvement over the weekend.
"Increasing moisture as seen by an bump up in PWATs and surface dewpoints will begin to make conditions feel more muggy for this time of year. 08.12z PWATS approach 1.5 to 1.6 inches along with surface dewpoints forecast in the mid 60s. A continuation of 850 mb temperatures in the 15 to 18C range will likely push highs to the mid/upper 80s. A few 90 degree readings not out of the question Sunday in the typical warmer spots."
First 30°C in Niagara Falls today, though I'm in Washington DC for the weekend
Does it feel humid subtropical down there? Skies look it here, no deep blue skies like yesterday's heat but a watery blue with some puffy, vertical cumulus clouds near the horizon. I should take a photo to illustrate.
"Increasing moisture as seen by an bump up in PWATs and surface dewpoints will begin to make conditions feel more muggy for this time of year. 08.12z PWATS approach 1.5 to 1.6 inches along with surface dewpoints forecast in the mid 60s. A continuation of 850 mb temperatures in the 15 to 18C range will likely push highs to the mid/upper 80s. A few 90 degree readings not out of the question Sunday in the typical warmer spots."
Cool, thanks. PWAT currently under 1" over you. Atmosphere pretty dry.
This is also good to use to see how heavy of a downpour will fall. Over 2" and you could see some intense rainfall if conditions allow. Means atmosphere is LOADED with moisture .
Misread the link, it says a tropical storm landfall is rare for May, not that this one is unlikely.
The 11 pm EDT Thursday forecast from NHC, which calls for a 50-mph storm bringing 2 - 4" of rain to the coast, is more likely.
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Skies look it here, no deep blue skies like yesterday's heat but a watery blue with some puffy, vertical cumulus clouds near the horizon. I should take a photo to illustrate. 
