April 2023

[Picard]

My other half and I were up in Hartford earlier today.  The car read 95F as we were departing to head back.  I remarked to her that I didn't think it was that hot, and that it was probably amplified from the pavement.  Now I see the reading is actually credible.  It didn't feel quite that warm because of the low humidity.  But damn, record high mid 90s in New England in mid-April.  

My own high registered as 93F with 17% humidity.  I think my 93 might be a touch high because of the thermometer location and quality of the shelter.  Then again.....

[Stormlover74]

1 minute ago, Picard said:

My other half and I were up in Hartford earlier today.  The car read 95F as we were departing to head back.  I remarked to her that I didn't think it was that hot, and that it was probably amplified from the pavement.  Now I see the reading is actually credible.  It didn't feel quite that warm because of the low humidity.  But damn, record high mid 90s in New England in mid-April.  

My own high registered as 93F with 17% humidity.  I think my 93 might be a touch high because of the thermometer location and quality of the shelter.  Then again.....

I was sitting in the shade when it was about 90 and it wasn't uncomfortable at all

[nycwinter]

it was very uncomfortable even with such low humidity glad the heat is over for the time being..

[SACRUS]

4/14

EWR: 93
NYC: 91
TEB: 90
BLM: 90
LGA: 89
New Brnswck: 88
ACY: 85
PHL: 84
ISP: 84
TTN: 84
JFK: 82

[donsutherland1]

NYC recorded its earliest 70F minimum temperature on record yesterday. The prior earliest such low temperature occurred on April 17, 2002. It is only the 4th such reading on record in April. Records go back to 1869.

[Roger Smith]

Record high minimum at NYC of 70F broke existing 2019 record by 10 (that one only increased the 1896/2014 tied record by one). 

A 10-degree jump in a record high is fairly unusual. I was able to run a program on my NYC data base and found there were only 15 jumps of 10 or more degrees in the current (366 daily) record high minima and only nine of those larger than 10 degrees. This list also contains five jumps of 10 or more that occurred before the eventual final record was set. This study requires a protocol that highest value 1869-1900 is a "starter" record and subsequent records are increases (if any) on that, which removes a lot of trivial cases from early in the data set. 

Incr __ Date ______ New record hi min __ Previous __ status 

+15 _ Jan 4 ________ 59 1950 __________ 44 1933 ___ 1950 final value

+13 _ Mar 21 _______ 55 1903 __________ 42 1890/94_ 2012 57F final value

+13 _ Dec 27 _______ 57 1949 __________ 44 1881 ___ 1949 final value

+13 _ Jan 16 _______ 53 1995 __________ 40 1974* __ 1995 final value

+13 _ Dec 24 ______ 63 2015 __________ 50 1931 ___ 2015 final value

+12 _ Jan 12 _______ 56 1932 __________ 44 1898 ___ 1932 final value

+12 _ Feb 16 _______ 56 2023 __________44 2002 ___ 1932 final value

+11 _ Oct 25 _______ 69 1908 __________ 58 1900*___ 1908 final value

+11 _ May 3 _______ 67 1913 ___________ 56 1910*___ 2018 70F final value

+11 _ Jan 13 _______ 55 1932 __________ 44 1892 ___ 1932 final value

+11 _ Jan 27 _______ 53 1916 __________ 42 1911 ____ 1916 final value

+10 _ Mar 20 ______ 56 1903 __________ 46 1898 ____ 1948 57F final value

+10 _ Apr 8 ________ 65 1929 __________ 55 1922 ____ 1991 66F final value

+10 _ May 6 _______ 71 1930 ___________ 61 1909 ____ 1930 final value

+10 _ Dec 29 ______ 55 1984 __________ 45 1905*____ 1984 final value

+10 _ Feb 23 ______ 55 1985 __________ 45 1943 ____ 1985 final value

+10 _ Dec 22 ______ 58 1990 __________ 48 1949 ____ 2013 61F final value

+10 _ Feb 5 ________ 51 1991 __________ 41 1943 ____ 1991 final value

+10 _ Apr 7 ________ 63 1991 __________ 53 1954 ____ 1991 final value

+10 _ Apr 14 _______ 70 2023 __________ 60 2019 ___ 2023 final value

________________

note there are no cases of a 10+ rise in high minimum record values May 7 to Oct 24 inclusive. 

* these years had earlier tied values

====================

There are a few larger increases in record high maxima. This is the same format for a list of increases of 12 or more in record high maxima (note April 7 has two of them):

+17 _ Mar 21 _______ 84 1921 ___________ 67 1919 ___ 1921 final value

+17 _ Mar 25 _______ 75 1910 ___________ 58 1904*___1963 (79F) final value

+16 _ Jan 27 _______ 69 1916 ___________ 53 1880 ___ 1916 final value

+16 _ Feb 25 _______ 75 1930 ___________ 59 1912 ___ 1930 final value

+15 _ Mar 13 _______ 85 1990 ___________ 70 1929 ___ 1990 final value

+14 _ Mar 14 _______ 70 1903 ___________ 56 1879 ___ 1946 (75F) final value

+14 _ Apr 7 _________ 89 1929 __________ 75 1908 ___ 2010 (92F) final value

+14 _ Jan 15 _______ 67 1932 ___________ 53 1928 ___ 1932 final value

+14 _ Feb 4 ________ 68 1991 ___________ 54 1883 ___ 1991 final value

+13 _ Apr 7 _________ 62 1904 __________ 75 1908 ___ 2010 (92F) final value

+13 _ Apr 1 _________ 83 1917 ___________ 70 1893 ___ 1917 final value

+12 _ Jan 26 _______ 72 1950 ___________ 60 1916 ___ 1950 final value

+12 _ Apr 12 ________ 90 1977 ___________ 78 1947 ___ 1977 final value

note: all of these occur before April 13 in the calendar year. increases in records, while frequent, are usually on the order of 1-3 F deg in summer. The largest increase late in the year was +11 Nov 1 1950 (84F) from 73F 1927 and 1929.

_______________________________________________

Not that many "starter" records have survived to the present time. Sep 7 1881 is probably the one with the largest supremacy over all later readings (101F vs 93F in 1919). 

 

[donsutherland1]

The progression of NYC's earliest 70° temperature record:

[lee59]

I would not be surprised if record high minimums become more numerous in Central Park, especially in the warmer months, as the UHI affect increases.

[SnoSki14]

21 minutes ago, donsutherland1 said:

The progression of NYC's earliest 70° temperature record:

It'll be late March before you know it. 

Our warm records have really been accelerating. 

We might have also shot our warm load early. EPS has a substantial cool down for late April into May

[SACRUS]

Low of 60 overnight after a high of 90.  Now 62 and cloudy.  Could see some breaks in clouds before pm shower/storms.   Looks to clear later Sun (4/16). Cool Mon (4/17) - Wed (4/19) before brief warm up Thu (4/20) and Fri (4/21).  Back and forth cooler and warm the last 10 days, guidance has shifted a bit cooler more towards normal overll in the period.

[CIK62]

The next 8 days are averaging     61degs.(54/69) or +5.

Month to date is    59.1[+8.5].     Should be    59.8[+7.2] by the 23rd.

Reached just 77 here yesterday.

Today:    64-69, wind e., cloudy,rain if any will be late, say 7pm., 58 tomorrow AM.

Clearly a BN finish making a #1 April finish----a race to the wire?.............

58*(85%RH) at 7am{was 70 at midnight}.     61* at 8am.      62* at 9am, variable fog.      64* at 10am.       63* at 1pm.       70* at 3pm as sun appeared while radar had multiple cells around.       61* at 6pm.

 

[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. 

 

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.

[donsutherland1]

1 hour ago, SnoSki14 said:

It'll be late March before you know it. 

Our warm records have really been accelerating. 

We might have also shot our warm load early. EPS has a substantial cool down for late April into May

April will likely end cool. The GEFS appears to be too warm.

[SACRUS]

Some breaks of sun and not much on radar east of PA.

 

[SACRUS]

Lat measurable rain was April 1st for many.

April

EWR: 0.26 (4/1)
NYC: 0.38 (4/1)

[Stormlover74]

1 hour ago, SACRUS said:

Some breaks of sun and not much on radar east of PA.

 

Nam doesn't bring too much to the area today. A tenth or so.  Gfs and euro are a bit wetter

[SACRUS]

73/62

 

dew points up so much more muggy

[TheClimateChanger]

13 hours ago, donsutherland1 said:

Good charts. It's mostly climate change. I've added Climate Central's instant attribution maps to my above comment.

Don,

I think what’s even more concerning than the fact it’s warming at a rate of 5-6F/century over the last 65 years at these locations is the fact that, looking at the data, it’s clear there’s an accelerating increase. If the linear trend line was actually explaining all of the trend, you’d expect data points to be distributed equally above and below it throughout the period covered by the trend line. Instead, in recent years, the vast majority of temperatures are exceeding what would be predicted by the linear trend. Looks like we may be warming at an instantaneous rate of 7 or 8 degrees per century now. But it would take a couple decades to confirm that.

[nycwinter]

19 minutes ago, TheClimateChanger said:

Don,

I think what’s even more concerning than the fact it’s warming at a rate of 5-6F/century over the last 65 years at these locations is the fact that, looking at the data, it’s clear there’s an accelerating increase. If the linear trend line was actually explaining all of the trend, you’d expect data points to be distributed equally above and below it throughout the period covered by the trend line. Instead, in recent years, the vast majority of temperatures are exceeding what would be predicted by the linear trend. Looks like we may be warming at an instantaneous rate of 7 or 8 degrees per century now. But it would take a couple decades to confirm that.

most people alive today will be dead by the end of the century....

[snywx]

75/61 here

we need some rain up here. Quite a few brush fires ongoing 

[SACRUS]

[psv88]

4 hours ago, SnoSki14 said:

It'll be late March before you know it. 

Our warm records have really been accelerating. 

We might have also shot our warm load early. EPS has a substantial cool down for late April into May

Averages are increasing so this isn’t cold, probably 60-65. 

[BxEngine]

Kinda awful bust so far. Mid 60s and dreary my ass. 

[Rjay]

4 minutes ago, BxEngine said:

Kinda awful bust so far. Mid 60s and dreary my ass. 

Huge bust by Earthlight 

[Wxoutlooksblog]

Initially most of the shower and t-storm activity will be focused over Pa and western NJ but I think it will drift eastward this evening and if it doesn't wash out before it gets here most of the NYC Metro Region will get some rainfall very late this afternoon or more likely early tonight. I think tomorrow is mainly dry aside from some low clouds and patchy fog.

WX/PT

[Allsnow]

We pray 

 

 

[Allsnow]

 

[nycwinter]

got warmer this afternoon for the city then what was predicted today..

[bkviking]

In Port Jefferson it started nice but “drizzery” is here and suddenly much cooler. 

[dWave]

23 minutes ago, nycwinter said:

got warmer this afternoon for the city then what was predicted today..

Big range though with the easterly flow. 74 in the Park, 63 at LGA.