April 2024

[Cfa]

82.

How can anyone hate this?

[psv88]

16 minutes ago, Cfa said:

82.

How can anyone hate this?

Only miserable people 

[winterwx21]

1 hour ago, MJO812 said:

Too warm 

Sweating

Nothing wrong with sweating a little bit. Enjoy it. 

[SACRUS]

 

Up to 82 today.  Likely the warmest till 4/24- 4/26 period. Cloudy cool Wed - Fri.  Drier weekend but still a bit cooler below normal. Warmer look by the 24/25th.

 

 

[Snowlover11]

76 for a high, 82 in my house.  the ac is on.

[SACRUS]

 

Records:
 

Highs:

EWR: 88 (1960)
NYC: 87 (1941)
LGA: 86 (1941)


Lows:

EWR: 25 (1943)
NYC: 28 (1943)
LGA: 28 (1943)

Historical:

 

1921 - Two mile high Silver Lake, CO, received 76 inches of snow in 24 hours, the heaviest 24 hour total of record for North America. The storm left a total of 87 inches in twenty-seven and a half hours. (David Ludlum)

1927 - New Orleans LA was drenched with 14.01 inches of rain, which established a 24 hour rainfall record for the state. (The Weather Channel)

1949 - A hailstone five inches by five and a half inches in size, and weighing four pounds, was measured at Troy NY. (The Weather Channel)

1958 - A tornado 300 yards in width skipped along a five mile path near Frostproof FL. A 2500 gallon water tank was found one mile from its original position (it is not known how much water was in the tank at the time). (The Weather Channel)

1987 - Thunderstorms developing along a cold front produced severe weather in the Southern Atlantic Coast Region. A tornado killed one person and injured seven others near Mount Dora FL. Drifts of hail up to two feet deep were reported in Davidson and Rowan counties in North Carolina. Myrtle Beach SC was deluged with seven inches of rain in three hours. (The National Weather Summary) (Storm Data)

1988 - Death Valley, CA, was soaked with 1.53 inches of rain in 24 hours. Snow fell in the mountains of southern California. (The National Weather Summary) (Storm Data)

1989 - Showers and thunderstorms soaked the eastern U.S. with heavy rain, pushing the rainfall total for the month at Cape Hatteras NC past their previous April record of 7.10 inches. (Storm Data) (The National Weather Summary)

1990 - Thunderstorms developing along a stationary front produced severe weather from west central Texas to west central Arkansas during the late afternoon and evening. Thunderstorms spawned a tornado which caused more than half a million dollars damage at Fort Stockton TX, produced wind gusts to 65 mph at Dennison TX, produced baseball size hail at Silo OK and near Capps Corner TX, and drenched southeastern Oklahoma with up to 4 inches of rain in two hours. (The National Weather Summary) (Storm Data)

 

1998: An F3 tornado hits downtown Nashville causing extensive damage but no loss of life. An additional 62 tornadoes touched down in Arkansas, Kentucky, and Tennessee. These tornadoes caused 12 fatalities and approximately 120 injuries. Click HERE for more information from the NWS Office in Nashville.

 

2000: What a difference a day made (with the help of a strong cold front). Yesterday's 86 degrees in Goodland, Kansas, tied the record high for the date. Today's high of 29 degrees was also a date record high, but a record low high. It was a new record by 3 degrees.

[Dark Star]

4 hours ago, TheClimateChanger said:

Interesting. I don't see much evidence for this, but [assuming you are using data from first-order sites to draw this conclusion] it seems to coincide with the move to automated weather observing systems. 

Based on a study of 76 first-order sites from September 1, 1994 to August 31, 1995, ASOS averaged +0.79F COOLER* than the temperatures measured from conventional hygrothermometers - more specifically 0.90F COOLER for daytime maxima and 0.66F COOLER for overnight minima. Of the 76 sites studied, all but nine had a cooling bias with the installation of the ASOS. The study estimated +0.53F as a systemic bias, with an additional +0.37F bias due to improper solar shielding in the conventional hygrothermometer in the daytime, and an additional bias of +0.13F [but variable] for overnight temperatures resulting from the move of the station from sites close to airport buildings to more remote areas of the airport by the runways.

What's interesting to me if you look at the temperature traces from first order sites today, it's warmed so much that this step change of nearly 1F is not even detectable. Can't help but wonder if the change in instrumentation isn't at play here if the data truly shows a decrease in heatwave length. It's certainly WAY hotter nowadays than it used to be in the summertime.

Source: https://climate.colostate.edu/pdfs/climo_rpt_96_2.pdf

Edit: Sorry, originally had warmer here. Just got the comparison mixed up, should read cooler.

Speaking from a suspect memory, I seem to remember heat waves in the 1960s and 1970s, but then we would get cool fronts in between.  Now it seems it gets hot, then hotter, then back to just hot?

[kat5hurricane]

Back to back beauties yesterday and today. Too bad that we go back into the soup by Wednesday.

[Nibor]

3 hours ago, MJO812 said:

Too warm 

Sweating

This is like the most inoffensive 80 degree day we’ve ever had. 

[Rjay]

Got to 79 before the seabreeze.   Still 70 though.  

[donsutherland1]

The temperature soared into the 80s across much of the region today. It was even hotter in the southern Mid-Atlantic region where the temperature topped out at 90° in Norfolk (old record: 89°, 1941) and Richmond.

Tomorrow will be another warm day with readings rising toward or above 70°. Afterward, it will turn somewhat cooler with unsettled conditions before a stronger cold shot arrives during the next weekend.

The ENSO Region 1+2 anomaly was -0.1°C and the Region 3.4 anomaly was +1.2°C for the week centered around April 3. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +0.28°C and the ENSO Region 3.4 anomaly has averaged +1.22°C. The ongoing basinwide El Niño event is fading. Neutral conditions could develop later in the spring.

The SOI was -4.69 today.

The preliminary Arctic Oscillation (AO) was +3.405 today.

Based on sensitivity analysis applied to the latest guidance, there is an implied 63% probability that New York City will have a warmer than normal April (1991-2020 normal). April will likely finish with a mean temperature near 55.2° (1.5° above normal).

 

[jm1220]

1 hour ago, Rjay said:

Got to 79 before the seabreeze.   Still 70 though.  

Yup, was a pretty weak sauce seabreeze. Usually it drops fast and we get the full blown Ambrose Jet this time of year. 

[the_other_guy]

13 hours ago, Snowlover11 said:

76 for a high, 82 in my house.  the ac is on.

Heat kicked on this morning…47F

[bluewave]

Too bad we could get such a strong -EPO pattern which is forecast to coincide with the cooler backdoor this week when we needed it during the winter.  All the best -EPOs since 13-14 and 14-15 have occurred during other seasons than the winter. Those were the last winters with wall to wall -EPO patterns. 

 

 

 

 

[jm1220]

10 minutes ago, bluewave said:

Too bad we could get such a strong -EPO pattern which is forecast to coincide with the cooler backdoor this week when we needed it during the winter.  All the best -EPOs since 13-14 and 14-15 have occurred during other seasons than the winter. Those were the last winters with wall to wall -EPO patterns. 

 

 

 

 

Yup of course right when it’s not wanted which just sends in maritime puke from the east instead of the west. Right on cue for the last few years. Last year or the year before it was I think 2 weeks straight of some type of easterly winds. 

[bluewave]

27 minutes ago, jm1220 said:

Yup of course right when it’s not wanted which just sends in maritime puke from the east instead of the west. Right on cue for the last few years. Last year or the year before it was I think 2 weeks straight of some type of easterly winds. 

My guess is that the backdoor prevented us from reaching 90° this week. The long range models had mid 80s for Wednesday into Friday  before the backdoor appeared in more recent forecasts. So they probably would have been at least 5°+ too cool like we have seen on the original long range forecast for yesterday. 

[MJO812]

43 minutes ago, bluewave said:

Too bad we could get such a strong -EPO pattern which is forecast to coincide with the cooler backdoor this week when we needed it during the winter.  All the best -EPOs since 13-14 and 14-15 have occurred during other seasons than the winter. Those were the last winters with wall to wall -EPO patterns. 

 

 

 

 

Like clockwork 

It's amazing 

We need to get back to those winters

[jm1220]

10 minutes ago, MJO812 said:

Like clockwork 

It's amazing 

We need to get back to those winters

It’s the West/Plains turn for bonanza winters now. That’ll continue as long as we have this Pacific SST orientation. It’s about as hostile as it gets for us. 

[bluewave]

16 minutes ago, MJO812 said:

Like clockwork 

It's amazing 

We need to get back to those winters

The interesting thing is that we had those 2 cold winters just before the record 9 winters of record warmth since 15-16. Almost like our last really cool summer in 2009 was followed by all the record summer warmth since 2010. The lone top 10 coldest February 2015 month got answered by a record amount of top 10 warmest winter months since then including the +13.3 December 2015 and 80° in February 2018 not to mention all the 40° winters in recent years. Then our lone top 10 coldest June into July 2009 was  answered by the warmest summer on record in 2010 and a record number of top 10 warmest summer months since then.

[SACRUS]

 

From 83 to 45 overnight now to a sunny 59.  Not as warm as monday but low 70s will mark the close of this nice but brief stretch. Next shot at 70s or above will be the close of the month.   Clouds and rain Wed - Fri - onshore wed night and Thu make it a bit (very) dreary.   Dry out this weekend but still cooler than normal overall 17th  through the 24th.  No sustained warmth the next 7 - 10 days, ridging pushing east for the close of the month.

 

[SACRUS]

 

Records:

Highs:

EWR: 92 (2002)
NYC: 92 (2002)
LGA: 89 (2002)


Lows:

EWR: 26 (1943)
NYC: 29 (1928)
LGA: 31 (1943)

Historical:

 

1849: Charleston, South Carolina recorded their latest freeze ever with a temperature of 32 degrees while 6 inches of snow fell at Wilmington, North Carolina. Snow fell as far south as Milledgeville, Georgia. A damaging hard freeze occurred from Texas to Georgia devastating the cotton crop. 

 

1851: "The Lighthouse Storm" of 1851 struck New England on this date. Heavy gales and high seas pounded the coasts of New Hampshire and eastern Massachusetts. The storm arrived at the time of a full moon, and high tide was producing unusually high storm tides. The storm was so named because it destroyed the lighthouse at Cohasset, Massachusetts. Two assistant lighthouse keepers were killed there when the structure was swept away by the storm tide.

1851 - The famous "Lighthouse Storm" raged near Boston Harbor. Whole gales and gigantic waves destroyed Minot Light with its two keepers still inside. The storm resulted in great shipping losses and coastal erosion. (David Ludlum)

1880 - A tornado near Marshall, MO, carried the heavy timbers of an entire home a distance of twelve miles. (The Weather Channel)

1933 - Franklin Lake, NH, was buried under 35 inches of snow. (Sandra and TI Richard Sanders - 1987)

1960 - A wind gust of 70 mph was measured at the Stapleton International Airport in Denver CO, their highest wind gust of record. (The Weather Channel)

1987 - A slow moving storm system produced heavy rain over North Carolina and the Middle Atlantic Coast States. More than six inches of rain drenched parts of Virginia, and flooding in Virginia claimed three lives. Floodwaters along the James River inundated parts of Richmond VA. (The National Weather Summary) (Storm Data)

1988 - A storm in the northeastern U.S. produced a foot of snow at Pittsburg VT. Severe thunderstorms produced baseball size hail and spawned five tornadoes in the Southern High Plains Region. (The National Weather Summary) (Storm Data)

1989 - A cold front, ushering sharply colder air into the north central U.S., brought snow to parts of Montana and North Dakota. At midday the temperature at Cutbank MT was just 22 degrees. (The National Weather Summary) (Storm Data)

1990 - Thunderstorms developing along a stationary front produced large hail and damaging winds across Oklahoma, with 99 reports of large hail and damaging winds during the evening and early nighttime hours. Thunderstorms produced baseball size hail south of Carney, and wind gusts to 100 mph in the Oklahoma City area which swept away many Federal tax returns being transported from a mail cart to a waiting truck about the time of the midnight deadline. Will Rogers Airport in Oklahoma City reported a record wind gust of 92 mph. (The National Weather Summary) (Storm Data)

[psv88]

40 this morning, house held the warmth from yesterday 

[SACRUS]

 

Highs Yesterday:

BLM: 83
EWR: 83
NYC:  82
New Brnswcl: 82
TTN: 80
LGA: 80
TEB: 79
ISP:  78
JFK:  77

[psv88]

Crazy how quickly so many trees just popped leaves yesterday. 2 days ago some of my trees had no semblance of leaves and today they are half leafed out already 

[uofmiami]

48 minutes ago, psv88 said:

Crazy how quickly so many trees just popped leaves yesterday. 2 days ago some of my trees had no semblance of leaves and today they are half leafed out already 

Full sun and warm temps will do that in mid April. Trees were just waiting for some nice days to arrive.

[Superstorm]

1 hour ago, SACRUS said:

 

Highs Yesterday:

BLM: 83
EWR: 83
NYC:  82
New Brnswcl: 82
TTN: 80
LGA: 80
TEB: 79
ISP:  78
JFK:  77

Not enough vegetation in Central Park to throw off the numbers.

[Allsnow]

4 hours ago, bluewave said:

Too bad we could get such a strong -EPO pattern which is forecast to coincide with the cooler backdoor this week when we needed it during the winter.  All the best -EPOs since 13-14 and 14-15 have occurred during other seasons than the winter. Those were the last winters with wall to wall -EPO patterns. 

 

 

 

 

Why the disconnect between ideal winter patterns not occurring inside DJF? It’s nice to see we can still get h5 looks like this but would be better during winter and not April 

[bluewave]

12 minutes ago, Allsnow said:

Why the disconnect between ideal winter patterns not occurring inside DJF? It’s nice to see we can still get h5 looks like this but would be better during winter and not April 

Probably related to the big changes in the Pacific SSTs since 2014 along with the more frequent and amplified MJO 4-7s during the winter. 

A recent paper was just published on this remarkable warming  in the North Pacific SST patterns since the 2014 marine heatwave.

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2022GL101078

The fundamental result of this study is that the first EOF of SST in the North Pacific has changed starting in 2014. For more than 20 years, the PDO has been used to describe the state of the North Pacific. However, since the marine heatwave of 2014, there have been remarkable changes to the dominant mode of SST in the North Pacific. The spatial pattern of the first EOF of SST from 1950 to 2021 is notably different from the PDO, suggesting that though the PDO served as a useful metric of SST variations until 2014 (Johnstone &Mantua, 2014), it may no longer be as effective a climate index for the North Pacific. From 1950 until the 2014 MHW, the first EOF remained consistent in its proportion of positive and negative regions with both taking up roughly half the area of the North Pacific (and with the positive region taken to be the eastern Pacific). When EOFs are calculated from 1950 to endpoints after 2014, the first EOF has a maximum positive region covering 77% of the North Pacific, with a PC indicating the largest anomalies on record. These changes to the first EOF/PC of North Pacific SST are nothing short of remarkable.

In concert with these changes, the second EOF/PC of SST has also undergone profound evolutionsince 2014. This second EOF now accounts for approximately 18% of the variability, growing from 13% during the 1950–2013 period. The spatial structure of the second EOF now is positive over almost the entire basin, with a PC that has grown strongly positive in the last several years. Thus, the second EOF/PC describes warming over much of the Pacific not in the positive lobe of the first EOF.

[nycwinter]

much nicer today lower dewpoints nice breeze...

[Dark Star]

23 hours ago, bluewave said:

My guess is that the backdoor prevented us from reaching 90° this week. The long range models had mid 80s for Wednesday into Friday  before the backdoor appeared in more recent forecasts. So they probably would have been at least 5°+ too cool like we have seen on the original long range forecast for yesterday. 

Of course the long range models also predicted feet of snow for NYC several times this past winter?