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June 2022


bluewave
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18 hours ago, forkyfork said:

more of a linked up ridge look on today's guidance

 

 

While we get the more linked up look, energy is trying to sneak underneath. So we get more onshore flow with high pressure east of New England next week. 

8E1974E7-FDE2-4B52-B536-246ACD123893.thumb.png.5786ba1b3d02d0b9e2832ab441b862eb.png

F8E494DC-AA6E-48C3-B501-3F6044364FAE.thumb.png.8fb1c56fd89cb1852f13a06207ac1960.png

 

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67/51 off a high of 93 yesterday.  Clouds pushing into the area from NYS.  Cooler 60 hours before warmer/humid and some unsettelled weather moves in Tue (6/21) through next Fri (6/24) as ridge refires into the Plains and we are fringed.  Euro cut off a ULL in the weakness along the east coast and its onshore city for 72 hours next week while the low meanders near the coastal Carolinas and we have onshore/clouds and storms.  That bucked the prior trend of pushing the heat in for 24/36 hours on previous 6/17 12z guidance.  We'll see where we go today but the seasonal tendency would argue another battle with onshore along the NE and EC. 

 

Beyond there next weekend 6/25 look to see flow go flatter and some of the heat come through.  Plains ridge is a bit flatter as we open July on the longer range guidance so normal/bias warm would be the call as it stands now for the open of July.

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27 minutes ago, bluewave said:

While we get the more linked up look, energy is trying to sneak underneath. So we get more onshore flow with high pressure east of New England next week. 

8E1974E7-FDE2-4B52-B536-246ACD123893.thumb.png.5786ba1b3d02d0b9e2832ab441b862eb.png

F8E494DC-AA6E-48C3-B501-3F6044364FAE.thumb.png.8fb1c56fd89cb1852f13a06207ac1960.png

 

that looks like the lead up to the late may over the top heat

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7 minutes ago, forkyfork said:

that looks like the lead up to the late may over the top heat

The GEPS has a middle ground between the GEFS and EPS. The high east of New England late next week becomes the Bermuda high a few days later. So the SSE flow becomes more SW and gives us a warm up in late June.


B5B9FFD0-10D6-451F-B92B-10ED3B52BABB.thumb.png.aac3539063cd7fb7f7342e12c4e74d2c.png1C2AFF9D-80DF-4E3F-BF1D-B6F142880061.thumb.png.390bf293c8f825f0a4e2d9a05cdec051.png

 

 

 

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36 minutes ago, the_other_guy said:

It’s such an interesting phenomenon because you lose the offshore breeze. Very unique setup

Gust fronts ahead of squall lines can be interesting along the South Shore. I can remember a summer day in Long Beach with a strong sea breeze and temperatures in the low 80s. The outflow from a squall line rapidly shifted the winds to offshore. The temperature jumped from 83° to 96° in about 3 minutes. It had been in the upper 90s most of the day away from the sea breeze around NYC.

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Just now, bluewave said:

Gust fronts ahead of squall lines can be interesting along the South  Shore. I can remember a summer day in Long Beach with a strong sea breeze and temperatures in the low 80s. The outflow from a squall line rapidly shifted the winds to offshore. The temperature jumped from 83° to 96° In about 3 minutes. It had been in the upper 90s most of the day away from the sea breeze.

Almost like a mini Chinook

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If NYC can drop below 55° Sunday morning, then it would be the first time this late in the season between 6-19 and 6-30 since 1995.

 

Latest lows under 55° in NYC since 1950

First/Last Summary for NY CITY CENTRAL PARK, NY
Each section contains date and year of occurrence, value on that date.
Click column heading to sort ascending, click again to sort descending.
Year
Last
Value
First
Value
Difference
1963 07-09 (1963) 54 08-25 (1963) 53 46
1979 07-06 (1979) 54 09-19 (1979) 53 74
1988 07-01 (1988) 53 09-06 (1988) 50 66
1995 06-28 (1995) 54 09-11 (1995) 53 74
1992 06-23 (1992) 52 09-13 (1992) 52 81
1968 06-21 (1968) 53 09-29 (1968) 53 99
1986 06-18 (1986) 54 08-28 (1986) 52 70
1959 06-18 (1959) 53 09-16 (1959) 52 89
1950 06-18 (1950) 48 09-05 (1950) 54 78
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Under a partly cloudy to mainly clear skies, temperatures will fall into the lower to middle 50s across much of the region. Some locations could see the mercury dip below 50°. Tomorrow will be fair but unseasonably cool. The unseasonably cool weather will continue until midweek next week before warmer air returns.

Meanwhile, near record and record heat prevailed in parts of the Gulf Coast Region. High temperatures included:

Jackson: 97°
Mobile: 101° (old record: 100°, 1913, 1944 and 1953)
Montgomery, AL: 98°
New Orleans: 96° (tied record set in 1990 and tied in 2011)
Pensacola: 100° (tied record set in 1953)
Tallahassee: 99°
Tampa: 98° (old record: 96°, 1975, 1998, and 2009)

Across the Atlantic Ocean, a record early-season heatwave continued to scorch parts of western Europe. High temperatures included:

Basel, Switzerland: 96°
Biarritz, France: 109°
Biscarosse, France: 107°
Cap Ferret, France: 107°
Cognac, France: 104°
Lyon, France: 101°
Offenbach-Wetterpark, Germany: 97°
Paris: 98°
Tours, France: 102°

During June 16-18, the MJO has been in Phase 1 at an amplitude of 1.500 or above. Of the six cases that saw such an outcome during June 15-25 (1988, 2003, 2010, 2012, 2017 and 2020), four had a warmer than normal July, one was somewhat cooler than normal and one was cooler than normal.

The ECMWF seasonal forecast indicates that the summer will be warmer than normal throughout the region and across much of North America. Based on how the pattern has been evolving during the spring transition to summer, it is more likely than not that the warmest anomalies of the summer will likely occur in July and August with June being the coolest of the three months in the Northeast. The latest ECMWF monthly forecast indicates that July will be warmer than June relative to normal and that August will be the warmest summer month relative to normal.

The ENSO Region 1+2 anomaly was -1.6°C and the Region 3.4 anomaly was -0.7°C for the week centered around June 8. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -1.28°C and the ENSO Region 3.4 anomaly has averaged -1.00°C. La Niña conditions will likely persist through the summer.

The SOI was +28.05 today.

The preliminary Arctic Oscillation (AO) was +0.883 today.

On June 16 the MJO was in Phase 1 at an amplitude of 2.071 (RMM). The June 15-adjusted amplitude was 1.888 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 50% probability that New York City will have a warmer than normal June (1991-2020 normal). June will likely finish with a mean temperature near 72.0° (normal).

 

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