April 2023

[bluewave]

3 hours ago, Cfa said:

I wish I knew how to fully interpret these.

This link gives you a very good explanation. I can remember my class learning the Skew-T back in meteorology 101. Gives a great image of the whole atmosphere in one diagram. 
 

http://www.theweatherprediction.com/thermo/skewt/

[Cfa]

83 here.

[Cfa]

5 minutes ago, bluewave said:

This link gives you a very good explanation. I can remember my class learning the Skew-T back in meteorology 101. Gives a great image of the whole atmosphere in one diagram. 
 

http://www.theweatherprediction.com/thermo/skewt/

Thanks a ton for this. I could never find a thorough explanation anywhere.

[Rtd208]

Current temp is 84 here..Beautiful

[psv88]

84 in NW Suffolk. Top ten day!

[Snowlover11]

we bake, beautiful 81 here.

[Rtd208]

It looks like upper 80's tomorrow (maybe 90 in a few spots), mid 80's Friday then we drop back into the 70's on Saturday but still nice.

[bluewave]

44 minutes ago, Cfa said:

Thanks a ton for this. I could never find a thorough explanation anywhere.

I learned more about weather forecasting using resources on the internet than trying to use textbooks and Alden Difax maps in the 1980s. You don’t even need to understand calculus to be a good forecaster these days. But an advanced math background is required if you want to work in model development or other research areas and academia. Though you can still understand the concepts in papers without advanced math. A big part of forecasting is understanding model strengths, weaknesses, and biases. Learning basic weather statistics can go a long way.

[winterwx21]

Spectacular day. 85 degrees here, but it feels great with the low humidity. We have a chance of hitting 90 tomorrow and friday. At least 88. 

[TriPol]

87 at Newark. Finally a warm spring that's not cold and rainy.

[SACRUS]

 

Records:

 

Highs:

 

EWR: 90 (1977)
NYC: 90 (1977)
LGA: 86 (1977))


Lows:

 

EWR: 27 (1976)
NYC: 22 (1874)
LGA: 29 (1976)

 

HIstorical:

 

1927 - A tornado wiped out the town of Rock Springs, TX, killing 72 persons and causing 1.2 million dollars damage. The tornado, more than one mile in width, destroyed 235 of 247 buildings, leaving no trace of lumber or contents in many cases. Many survivors were bruised by large hail which fell after the passage of the tornado. (David Ludlum) (The Weather Channel)

1934 - Winds atop Mount Washington, NH, averaged 186 mph for five minutes, with a peak gust of 231 mph, the highest wind speed ever clocked in the world. (David Ludlum)

 

1934: Winds atop Mount Washington New Hampshire, averaged 186 mph for five minutes, with a peak gust of 231 mph, the highest wind speed ever clocked in the world at that time.  In a report released by the World Meteorological Organization (WMO), that record was toppled in 1996 at Barrow Island, Australia during Typhoon Olivia. The new world record is now 253 mph. The 316 mph wind speed recorded at Moore, Oklahoma on 5/3/1999 logged during an F5 tornado was not recorded at ground level.

1987 - A cold front crossing the central U.S. produced heavy snow in the Central Rockies, and severe thunderstorms over Kansas and Oklahoma. Snowfall totals ranged up to 16 inches at Red Mountain Pass CO. Thunderstorm winds gusted to 87 mph at Ponca City OK. Winds associated with the cold front itself gusted to 69 mph at Tucumcari NM. (The National Weather Summary) (Storm Data)

1988 - Snow blanketed the Southern Appalachians. Totals in North Carolina ranged up to 17 inches at Mitchell. Winds at Flat Top Mountain gusted to 80 mph. (The National Weather Summary) (Storm Data)

1989 - Twenty-two cities in the south central and eastern U.S. reported record low temperatures for the date, including Elkins WV with a low of 15 degrees, and Baton Rouge LA with a reading of 37 degrees. (The National Weather Summary)

1990 - Arctic air invaded the central U.S. Lincoln, NE, reported a record low of 17 degrees. Thunderstorms developing along the arctic cold front produced heavy snow in north central Kansas, wind gusts to 61 mph at Midland TX, and wind gusts to 69 mph at Rawlins WY. Warm weather prevailed in the southwestern U.S. Las Vegas NV reported a record high of 91 degrees, and on the 13th, Sacramento CA reported a record high of 95 degrees. (Storm Data) (The National Weather Summary)

2010 - One-inch diamemter hail falls in Fresno, CA. Two condominiums are destroyed by thunderstorms in California's San Joaquin Valley. Up to three funnel clouds were also seen in the region.

[psv88]

85 now 

[dmillz25]

Up to 85 here

[bluewave]

Newark ties with 1977 for 7th earliest 85° or warmer day of the season.
 

First/Last Summary for NEWARK LIBERTY INTL AP, NJ
Each section contains date and year of occurrence, value on that date.
Click column heading to sort ascending, click again to sort descending.

Year	First	Value	Last	Value	Difference
1-1990	03-13 (1990)	86	10-09 (1990)	87	209
2-1945	03-20 (1945)	85	09-29 (1945)	89	192
3-1998	03-30 (1998)	86	09-27 (1998)	91	180
4-1991	04-07 (1991)	85	09-17 (1991)	95	162
4-2010	04-07 (2010)	92	09-25 (2010)	90	170
5-2013	04-09 (2013)	85	10-04 (2013)	89	177
6-2011	04-11 (2011)	87	10-10 (2011)	85	181
7-1977	04-12 (1977)	90	09-18 (1977)	85	158

[lee59]

Nice summer like day, 83-63

[Stormlover74]

8 minutes ago, lee59 said:

Nice summer like day, 83-63

Imagine a 34 dewpoint in July 

[lee59]

3 minutes ago, Stormlover74 said:

Imagine a 34 dewpoint in July 

Yea that would be welcome

[Gravity Wave]

7 minutes ago, Stormlover74 said:

Imagine a 34 dewpoint in July 

I'd settle for anything below 65, that used to be possible during the summer.

[Intensewind002]

2 minutes ago, lee59 said:

Yea that would be welcome

We would probably hit like 105 if dews were that low and departures were the same lol

[Intensewind002]

High of 83 here, very summery out, I wish the air conditioner was in my window though 

[Allsnow]

Amazing weather 

[TWCCraig]

82 and sunny

67 degrees just a couple miles to my SE. Happy to not be in the sea breeze today!

[donsutherland1]

Temperatures surged into the 80s across much of the region following a morning of record high minimum temperatures. Daily record high minimum temperatures included:

Bridgeport: 53° (old record: 49°, 2017)
Islip: 59° (old record: 51°, 2008)
New York City-Central Park: 64° (old record: 58°, 1947 and 2017)
New York City-JFK Airport: 56° (old record: 52°, 2017)
New York City-LaGuardia Airport: 66° (old record: 54°, 1945, 1996, and 2017)
Newark: 64° (old record: 59°, 2017)

Temperatures could reach the middle and upper 80s tomorrow and Friday, possibly challenging or breaking some record highs. Some of the more aggressive guidance shows some 90° readings tomorrow.

Overall, warmth appears likely to define April in much of the East. If the long-range guidance is accurate the first three weeks of the month could put April 2023 on a trajectory that could rank it among the 10 warmest Aprils on record in the northern Middle Atlantic region. Afterward, the latest EPS weeklies suggest that the month could finish with near normal readings.

The most recent April case to rank among the 10 warmest was:

Boston: 51.7°, 2019 (5th warmest)
Bridgeport: 54.0°, 2017 (1st warmest)
Islip: 51.9°, 2019 (6th warmest)
New Haven: 50.8°, 2022 (6th warmest)
New York City-Central Park: 57.2°, 2017 (2nd warmest)
New York City-JFK Airport: 55.1°, 2017 (2nd warmest)
New York City-LaGuardia Airport: 57.6°, 2017 (2nd warmest)
Newark: 57.2°, 2017 (4th warmest)
Philadelphia: 59.0°, 2019 (3rd warmest)
Poughkeepsie: 53.0°, 2017 (3rd warmest)
White Plains: 53.9°, 2017 (2nd warmest)

The ENSO Region 1+2 anomaly was +2.7°C and the Region 3.4 anomaly was 0.0°C for the week centered around April 5. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +1.77°C and the ENSO Region 3.4 anomaly has averaged -0.03°C. Neutral ENSO conditions will likely prevail through at least mid-spring. El Niño conditions will likely develop during the summer.

The SOI was +1.73 today.

The preliminary Arctic Oscillation (AO) was +1.262 today.

On April 10 the MJO was in Phase 6 at an amplitude of 1.918 (RMM). The April 9-adjusted amplitude was 1.724 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 91% probability that New York City will have a warmer than normal April (1991-2020 normal). April will likely finish with a mean temperature near 57.5° (3.8° above normal). That would rank as the second warmest April on record.

 

[LoboLeader1]

83F for a high here, winds gusting from WNW most of the day. Currently 80 as of 6PM.

[bluewave]

1 hour ago, Stormlover74 said:

Imagine a 34 dewpoint in July 

The last 35 dewpoint at Newark in July was in 2010. Plenty of dry heat that month. The drought feedback boosted the heat that month.

https://www.wunderground.com/history/daily/us/nj/newark/KEWR/date/2010-7-1

4:51 PM

79 °F

35 °F

20 %

https://www.wunderground.com/history/daily/us/nj/newark/KEWR/date/2010-7-3

2:51 PM

92 °F

41 °F

17 %

https://www.wunderground.com/history/daily/us/nj/newark/KEWR/date/2010-7-4

2:51 PM

99 °F

43 °F

15 %

https://www.wunderground.com/history/daily/us/nj/newark/KEWR/date/2010-7-5

1:51 PM

100 °F

45 °F

15 %

https://www.wunderground.com/history/daily/us/nj/newark/KEWR/date/2010-7-6

12:51 PM

102 °F

56 °F

22 %

 

 

Data for July 1, 2010 through July 30, 2010
Click column heading to sort ascending, click again to sort descending.

State	Name	Station Type	Highest Max Temperature
NY	MINEOLA	COOP	108
NJ	CANOE BROOK	COOP	107
NY	WANTAGH CEDAR CREEK	COOP	107
NJ	HARRISON	COOP	106
NJ	RINGWOOD	COOP	106
NJ	CRANFORD	COOP	104
CT	DANBURY	COOP	104
NJ	NEWARK LIBERTY INTL AP	WBAN	103
NY	LAGUARDIA AIRPORT	WBAN	103
NY	NY CITY CENTRAL PARK	WBAN	103
NJ	TETERBORO AIRPORT	WBAN	103
NY	WEST POINT	COOP	103
NY	SHIRLEY BROOKHAVEN AIRPORT	WBAN	103

 

Data for July 1, 2010 through July 30, 2010
Click column heading to sort ascending, click again to sort descending.

State	Name	Station Type	Highest Max Temperature
NJ	SOMERDALE 4 SW	COOP	106
PA	MARCUS HOOK	COOP	105
NJ	NEW BRUNSWICK 3 SE	COOP	105
NJ	PENNSAUKEN 1N	COOP	104
PA	NORTHEAST PHILADELPHIA AIRPORT	WBAN	104
NJ	TRENTON-MERCER AIRPORT	WBAN	104
NJ	FREEHOLD-MARLBORO	COOP	104
NJ	SOUTH JERSEY REGIONAL AIRPORT	WBAN	104

[Roger Smith]

That record high windspeed on Mount Washington was in an east-southeast gale with a coastal storm moving slowly north, here's a link to a map for the date: 

http://www.wetterzentrale.de/reanalysis.php?map=2&model=noaa&var=1&jaar=1934&maand=04&dag=13&uur=0000&h=0&tr=360&nmaps=24#mapref

Not surprised it was windy but gusts to 231 mph? Don't think one would guess that high from the map. Top of MWN is 6288' (I climbed it once from the base of the cog railway so I recall that factoid), making it around the 800-850 mb level of the atmosphere. When if ever do you see 231 mph 850 mb winds? Well I believe the report, just anomalously high, a lot of windstorms come and go up there from the other direction, peaking around 120 mph. 

[jm1220]

1 hour ago, Intensewind002 said:

We would probably hit like 105 if dews were that low and departures were the same lol

About as amazing as it gets. Heat during the summer now almost always comes on southerly flow events and much more likely to be 95 with 75 dew point vs over 100. We need the west winds like today that downslope. Way too often the ridge and heat overshoot us into NNE and even Canada these days. 

[forkyfork]

every site this account tweeted in the daily climo roundup set a new record high min today

https://twitter.com/iembot_okx

[bluewave]

49 minutes ago, forkyfork said:

every site this account tweeted in the daily climo roundup set a new record high min today

https://twitter.com/iembot_okx

Has Newark ever had a record low max which was above 60° in the spring with a dewpoint in the 20s before? The previous record low max of 59° in 2017 had a dewpoint of 51°. The record for 4-13 had a 60° dewpoint. So these record low maxes usually occur on higher dewpoints above 50° early mornings.

 

Newark/Liberty CLOUDY    65  29

 

4/12

59 in 2017

56 in 1948

56 in 1947

6:51 AM

60 °F

51 °F

72 %

 

4/13	61 in 2019

 

6:51 AM

61 °F

60 °F

97 %

 

4/14	62 in 2014

 

6:51 AM

62 °F

55 °F

78 %

 

[JustinRP37]

As beautiful as this weather is I really hope this isn’t the start of a super dry period. Trying to get some plants in the ground and gotta get the hose attached and water turned on!