CIK62 Posted April 6, 2021 Share Posted April 6, 2021 DEW POINT DEPRESSIONS EXCEEDED 60 DEGREES IN MANY SPOTS AT 5PM. 1 Link to comment Share on other sites More sharing options...
lee59 Posted April 6, 2021 Share Posted April 6, 2021 9 minutes ago, CIK62 said: DEW POINT DEPRESSIONS EXCEEDED 60 DEGREES IN MANY SPOTS AT 5PM. I was looking at the temperatures so far this month and every recording station in our area is slightly below normal thru the 5th except for Central Park. The reason, the heat island affect. On April 3 every station had a low temperature of 28-34 degrees, except Central Park which was only 47 degrees for a low. The stations were Bridgeport, LaGuardia, Kennedy, Islip and Newark. Link to comment Share on other sites More sharing options...
SnoSki14 Posted April 6, 2021 Share Posted April 6, 2021 Volatility is something that'll continue to grow in the years ahead. Nice 30+ degree diurnal range too. Was in the upper 30s this morning and 72F for the high. Link to comment Share on other sites More sharing options...
psv88 Posted April 6, 2021 Share Posted April 6, 2021 20 minutes ago, lee59 said: I was looking at the temperatures so far this month and every recording station in our area is slightly below normal thru the 5th except for Central Park. The reason, the heat island affect. On April 3 every station had a low temperature of 28-34 degrees, except Central Park which was only 47 degrees for a low. The stations were Bridgeport, LaGuardia, Kennedy, Islip and Newark. The heat island is baked into the city’s temps averages already. The heat Island around the park really isn’t changed in the past 60 years 1 Link to comment Share on other sites More sharing options...
donsutherland1 Posted April 6, 2021 Share Posted April 6, 2021 46 minutes ago, lee59 said: I was looking at the temperatures so far this month and every recording station in our area is slightly below normal thru the 5th except for Central Park. The reason, the heat island affect. On April 3 every station had a low temperature of 28-34 degrees, except Central Park which was only 47 degrees for a low. The stations were Bridgeport, LaGuardia, Kennedy, Islip and Newark. Central Park got to 32. The 47-degree figure was an error and has since been corrected. 2 Link to comment Share on other sites More sharing options...
donsutherland1 Posted April 6, 2021 Share Posted April 6, 2021 On this date in 1982, a blizzard brought widespread heavy snow to New York City into New England. This time around, springlike warmth prevailed. As a result of today's warmth, Central Park now has a monthly anomaly of 0.5° above normal. New York City finished winter 2020-21 with 38.6" snow. That was New York City's 39th highest seasonal figure on record. Over the past 30 winters, New York City has averaged 30.3" of snow. Newark's final snowfall figure of 45.7" ranked 14th highest. Over the past 30 winters, Newark has averaged 32.4" of snow. Philadelphia's final snowfall amount of 23.9" ranked as that city's 49th highest figure on record. Over the past 30 winters, Philadelphia has averaged 23.4" of snow. In the northern Middle Atlantic and southern New England areas, temperatures will likely top out in the 60s through Thursday. Some areas could again reach 70°. Afterward, it will become somewhat cooler. Then, temperatures could be confined mainly to the 50s in much of the region. Based on the latest guidance, no significant precipitation is likely into the weekend. Up north, excessive warmth will develop in northeastern Canada where some record high temperatures will be possible from tomorrow through Saturday. The ENSO Region 1+2 anomaly was -1.1°C and the Region 3.4 anomaly was -0.5°C for the week centered around March 31. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.25°C and the ENSO Region 3.4 anomaly has averaged -0.63°C. La Niña conditions will likely give way to neutral-cool ENSO conditions as the spring progresses. The SOI was -0.58 today. The preliminary Arctic Oscillation (AO) figure was +0.301 today. On April 4 the MJO was in Phase 5 at an amplitude of 1.419 (RMM). The April 3-adjusted amplitude was 1.562 (RMM). 1 Link to comment Share on other sites More sharing options...
lee59 Posted April 6, 2021 Share Posted April 6, 2021 45 minutes ago, donsutherland1 said: Central Park got to 32. The 47-degree figure was an error and has since been corrected. Ok good. I checked this afternoon on the NWS site and it said 47. I couldn't believe there was that much difference but it certainly would not have been the first time. So many times I am some 10 degrees colder in the morning than Central Park, when the wind is still. 1 Link to comment Share on other sites More sharing options...
TriPol Posted April 6, 2021 Share Posted April 6, 2021 2 hours ago, CIK62 said: DEW POINT DEPRESSIONS EXCEEDED 60 DEGREES IN MANY SPOTS AT 5PM. What is a dew point depression? Link to comment Share on other sites More sharing options...
uncle W Posted April 7, 2021 Share Posted April 7, 2021 records from the 1800's had very little heat island to work with...the outer boroughs were mostly farms and trees...not to mention New Jersey where most of our cold air has to travel over before it gets here...I wouldn't throw out the old records but look at them differently...maye record highs and lows should only go back to the 1930's... 3 Link to comment Share on other sites More sharing options...
gpsnavigator Posted April 7, 2021 Share Posted April 7, 2021 23 minutes ago, TriPol said: What is a dew point depression? The difference between the actual air temperature and the dewpoint. For example, if the air temperature is 70 degrees, and the dewpoint is 10, you get a dewpoint depression of 60. It's not a commonly used met term, but is neat to chart on a day like today when it's very dry and you end up with large difference between air temperature and dewpoint. 1 Link to comment Share on other sites More sharing options...
JerseyWx Posted April 7, 2021 Share Posted April 7, 2021 4 hours ago, gpsnavigator said: The difference between the actual air temperature and the dewpoint. For example, if the air temperature is 70 degrees, and the dewpoint is 10, you get a dewpoint depression of 60. It's not a commonly used met term, but is neat to chart on a day like today when it's very dry and you end up with large difference between air temperature and dewpoint. That's interesting actually. This time of year would probably have the highest DP depression on average since it's typically dry warmth. 1 Link to comment Share on other sites More sharing options...
CIK62 Posted April 7, 2021 Share Posted April 7, 2021 The next 8 days are averaging 55degs.(49/60), or about +3.0. Models have just 1.0" to 1.5" now from the 10th to the 15th. The 13th---20th. looks BN. I made 71*(21%RH) yesterday, but I am 1500' from the ocean. 54*(40%RH) here at 6am, thin broken overcast. 55*(35%RH) at 7am. 60* by Noon, brightening skies. Variable 57* to 60* during Noon to 3pm. 59* here at 4pm and 71* in NYC. 55* by 8pm. Link to comment Share on other sites More sharing options...
LibertyBell Posted April 7, 2021 Share Posted April 7, 2021 16 hours ago, bluewave said: First time the relative humidity at Newark dropped under 10% since 2012. Newark Liberty SUNNY 69 8 9 https://mesonet.agron.iastate.edu/plotting/auto/?_wait=no&q=157&network=NJ_ASOS&station=EWR&year=2021&var=min_rh&dir=below&thres=0&dpi=100&_fmt=png Was below 10% at NYC also, what about JFK? Did it get below 10% during the dry heatwave in April 2002? Link to comment Share on other sites More sharing options...
LibertyBell Posted April 7, 2021 Share Posted April 7, 2021 11 hours ago, donsutherland1 said: On this date in 1982, a blizzard brought widespread heavy snow to New York City into New England. This time around, springlike warmth prevailed. As a result of today's warmth, Central Park now has a monthly anomaly of 0.5° above normal. New York City finished winter 2020-21 with 38.6" snow. That was New York City's 39th highest seasonal figure on record. Over the past 30 winters, New York City has averaged 30.3" of snow. Newark's final snowfall figure of 45.7" ranked 14th highest. Over the past 30 winters, Newark has averaged 32.4" of snow. Philadelphia's final snowfall amount of 23.9" ranked as that city's 49th highest figure on record. Over the past 30 winters, Philadelphia has averaged 23.4" of snow. In the northern Middle Atlantic and southern New England areas, temperatures will likely top out in the 60s through Thursday. Some areas could again reach 70°. Afterward, it will become somewhat cooler. Then, temperatures could be confined mainly to the 50s in much of the region. Based on the latest guidance, no significant precipitation is likely into the weekend. Up north, excessive warmth will develop in northeastern Canada where some record high temperatures will be possible from tomorrow through Saturday. The ENSO Region 1+2 anomaly was -1.1°C and the Region 3.4 anomaly was -0.5°C for the week centered around March 31. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.25°C and the ENSO Region 3.4 anomaly has averaged -0.63°C. La Niña conditions will likely give way to neutral-cool ENSO conditions as the spring progresses. The SOI was -0.58 today. The preliminary Arctic Oscillation (AO) figure was +0.301 today. On April 4 the MJO was in Phase 5 at an amplitude of 1.419 (RMM). The April 3-adjusted amplitude was 1.562 (RMM). NYC finished 0.1" ahead of Boston! Also yesterday was the anniversary of the April 1982 blizzard and today is the anniversary of the April 2003 snowstorm! Lee Goldberg keeps mentioning incorrect information.....yesterday he kept saying NYC got 10 inches of snow in the Blizzard of 1982 and then got another 10 inches of snow the following year, in May! We've never even had a 1 inch snow event in May let alone a 10 inch one! Link to comment Share on other sites More sharing options...
LibertyBell Posted April 7, 2021 Share Posted April 7, 2021 14 hours ago, weathermedic said: 10% and DP of 10 at my station in Sheepshead Bay Did JFK get to below 10% humidity also? Link to comment Share on other sites More sharing options...
LibertyBell Posted April 7, 2021 Share Posted April 7, 2021 10 hours ago, gpsnavigator said: The difference between the actual air temperature and the dewpoint. For example, if the air temperature is 70 degrees, and the dewpoint is 10, you get a dewpoint depression of 60. It's not a commonly used met term, but is neat to chart on a day like today when it's very dry and you end up with large difference between air temperature and dewpoint. I wonder what it was in April 2002 when we had that dry heatwave? Link to comment Share on other sites More sharing options...
bluewave Posted April 7, 2021 Share Posted April 7, 2021 23 hours ago, LibertyBell said: Was below 10% at NYC also, what about JFK? Did it get below 10% during the dry heatwave in April 2002? JFK made it down to 10%. March and April typically have our lowest relative humidity readings of the year. It will be interesting to see if anyone can find the relative humidity during the July 1936 dust bowl heatwave. 1 Link to comment Share on other sites More sharing options...
donsutherland1 Posted April 7, 2021 Share Posted April 7, 2021 Morning thoughts... It will be mostly sunny and warm. High temperatures will likely reach the upper 60s and lower 70s in most of the region. Likely high temperatures around the region include: New York City (Central Park): 70° Newark: 71° Philadelphia: 71° Tomorrow will be partly cloudy and still mild. It could turn somewhat cooler during the latter part of the week and weekend. Temperatures could then be confined mainly to the upper 50s with some lower 60s. Link to comment Share on other sites More sharing options...
donsutherland1 Posted April 7, 2021 Share Posted April 7, 2021 1 hour ago, LibertyBell said: NYC finished 0.1" ahead of Boston! Also yesterday was the anniversary of the April 1982 blizzard and today is the anniversary of the April 2003 snowstorm! Lee Goldberg keeps mentioning incorrect information.....yesterday he kept saying NYC got 10 inches of snow in the Blizzard of 1982 and then got another 10 inches of snow the following year, in May! We've never even had a 1 inch snow event in May let alone a 10 inch one! During the April 1982 blizzard, New York City (JFK: 8.0”; LGA” 8.2”; NYC: 9.6”) did not see any of its major stations quite reach 10”. Outside the City, Newark picked up 12.8” and Islip received 16.0”. During the May 1977 snowfall, New York City saw a trace of snow. Some parts of New York State picked up 10” or more of snow e.g., Tannersville received 13.0” of snow. 2 Link to comment Share on other sites More sharing options...
wdrag Posted April 7, 2021 Author Share Posted April 7, 2021 So, it definitely gets pretty wet here this weekend (especially later Sat-early Mon) and as WPC now has, general 1", and can see more in spots. No snow. Wind gusts 40kt not completely out for Sunday-Monday morning LI, but probably just a typical wet April event. Elevation snow: no go. Fri 16th-Tue 20th: Still a Canadian block and now a +PNA... could get more interesting. Ensembles, as usual, but climatologically less favorable, have minor elevation snowfall nw edge of the forum. Can see another decent qpf event, depends if we get a low just to our south, which is possible in this developing pattern, or maybe it will be just be a wet cold front with primary vort-low across upper NYS? To be determined (TBD). Back in a couple of days. Edit: 348P. Didn't check ens trends but will in a couple of days but 12z/7 EC OP doing it again in this EXTENDED period next weekend. elevated snow acc. We'll see if it sticks around long enough (5 more days) for a thread, or disappears like that of this coming weekend. Have a night. Back tomorrow or Fri. 2 Link to comment Share on other sites More sharing options...
bluewave Posted April 7, 2021 Share Posted April 7, 2021 The April forecast looks like a continuation of the winter south based blocking theme with spring wavelengths. This week the south based blocking allowed highs around 70°. Looks like our first chances for heavier rain will come on Sunday. Next week appears generally cooler than this week as the -AO and +PNA gets stronger. But the south based blocking should allow enough ridging near the East Coast. This will keep the coolest temperature departures to our west which has been a frequent theme. Perhaps more rain chances for the gardening interests. 1 1 Link to comment Share on other sites More sharing options...
FPizz Posted April 7, 2021 Share Posted April 7, 2021 .15" of rain so far this morning. Still getting some light rain. 1 Link to comment Share on other sites More sharing options...
SACRUS Posted April 7, 2021 Share Posted April 7, 2021 Picked up 0.13 here. Rain ending clouds look to linger till at least noon. Those mostly sunny call looked off by 8 hours on the timing 1 1 Link to comment Share on other sites More sharing options...
Poker2015 Posted April 7, 2021 Share Posted April 7, 2021 1 hour ago, FPizz said: .15" of rain so far this morning. Still getting some light rain. Whats up with this rain?? I left my cornhole boards in the driveway last night, grrr Link to comment Share on other sites More sharing options...
FPizz Posted April 7, 2021 Share Posted April 7, 2021 1 hour ago, Poker2015 said: Whats up with this rain?? I left my cornhole boards in the driveway last night, grrr There was a 20% chance I saw...apparently 100% here, haha! I think it is done at least. Hopefully it wasn't enough to damage those boards 1 Link to comment Share on other sites More sharing options...
uncle W Posted April 7, 2021 Share Posted April 7, 2021 a few drops here as we were on the edge of the shower... Link to comment Share on other sites More sharing options...
SACRUS Posted April 7, 2021 Share Posted April 7, 2021 Full sun and up to 65 now. 1 Link to comment Share on other sites More sharing options...
wdrag Posted April 7, 2021 Author Share Posted April 7, 2021 Edit: 348P edit to the morning post. Didn't check ens trends but will in a couple of days but 12z/7 EC OP doing it again in this EXTENDED period next weekend (17-18ish) elevated snow acc. We'll see if it sticks around long enough (5 more days) for a thread, or disappears like that of this coming weekend. Have a night. Back tomorrow or Fri. Link to comment Share on other sites More sharing options...
donsutherland1 Posted April 7, 2021 Share Posted April 7, 2021 The power of the sea breeze: 5 pm: JFK: 59 degrees Central Park: 72 degrees Link to comment Share on other sites More sharing options...
bluewave Posted April 7, 2021 Share Posted April 7, 2021 The dry conditions are allowing the high temperatures to beat guidance. Pretty impressive diurnal range especially in areas that radiated last night. So the warm departure for the day was mostly driven by the high temperature. CLIMATE REPORT NATIONAL WEATHER SERVICE NEW YORK, NY 446 PM EDT WED APR 07 2021 ................................... ...THE ISLIP NY CLIMATE SUMMARY FOR APRIL 7 2021... VALID TODAY AS OF 0400 PM LOCAL TIME. CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1963 TO 2021 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) TODAY MAXIMUM 68 153 PM 85 2010 55 13 64 MINIMUM 40 519 AM 23 1982 38 2 44 AVERAGE 54 46 8 54 Link to comment Share on other sites More sharing options...
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