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June 2021


Stormlover74
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The next 8 days are averaging 74degs.(64/84), or about Normal.

Month to date is  73.0[+3.3].        Should be about 73.3[+2.1] by the 24th.

Not much phasing showing for Tues. AM with GOM system, so little rain.      

In true GFS style---the model went from 71 yesterday  to 104 today,  for July 01.      I expect to see oodles of 100's for us during the next 6 weeks worth of runs.   

64*(71%RH) here at 6am/7am, m. clear.            75* at 3pm.         80* at 5pm.

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Morning thoughts...

Today will be mostly sunny and pleasant. Temperatures will likely reach the upper 70s and lower 80s in most places. Likely high temperatures around the region include:

New York City (Central Park): 80°

Newark: 83°

Philadelphia: 81°

Normals:

New York City: 30-Year: 80.0°; 15-Year: 79.8°

Newark: 30-Year: 82.1°; 15-Year: 82.2°

Philadelphia: 30-Year: 83.5°; 15-Year: 83.7°

A warmer regime could begin to evolve late this week.

Out West, record-breaking heat will continue across the Southwest, including Phoenix. It remains likely that Phoenix will see its earliest 116° or above temperature on record. The unseasonable heat will likely extend northward into southern Canada including Alberta and Saskatchewan. 

Daily Records for June 16:

Phoenix: 115°, 1896 and 1974 (Forecast: 113° to 117°) ***smoke could hold down the readings by 1°-2° from the modeled values***

Tucson: 109°, 1985 and 1988 (Forecast: 111° to 115°)

*-Forecast range is 1 sigma below and above the forecast mean.

Yesterday, Denver had a high temperature of 101°. Since 1872, Denver has had 16 days on which the temperature reached 100° or higher in June. Just 1 (6%) day occurred prior to 1980. In contrast, 11 (69%) have occurred 2000 or later, including 9 (56%), which have occurred 2010 or later.

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Gorgeous evening down to 56 and a remarkable stretch of weather the next 2 days.  Pieces of some of the massive Rockies and southwest heat will head east and pending on clouds and storms offer the next shot at 90s on Saturday (6/19) and Sun 6/20.  Monday (6/21) may be more cloudy and stormy ahead of any tropical remnants tracking  into the region.  Beyond there 6/24 and on it looks like east coast ridging builds back and potentially hooks with the Western Atlantic Ridge.  Overall warm to hot June progresses.

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7 hours ago, LibertyBell said:

1983 really seems to be like an early warning shot of the type of summers that have become more common in recent years

 

Yeah, that was the first summer with such high dew points and heat indices.

9ABAEDDC-D842-496F-95E3-C06B0E6FC696.thumb.png.43fd65e9f00d98c8eafec6a4c7d3bfbd.png

0ED98509-7BB9-4570-9368-AB3B8DE00329.thumb.png.a10c02cb2b687f3a03b597e2101d3a68.png

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5 hours ago, wdrag said:

Good Wednesday morning everyone,

The Sunday-Tuesday totals were less than anticipated w NJ, and LI didn't do well. Radar seemed to have spotty higher AMT in NYS-CT but not seen in CoCoRAHS, with a max only 2.4" in NJ.

Yesterdays anticipated cold core thunder-small hail did not materialize in our area, as far as I can tell.  

 

 

Screen_Shot_2021-06-16_at_5_44.12_AM.png

Screen_Shot_2021-06-16_at_5_45.17_AM.png

Typical. We’re in the time of the year where we pull teeth to get any decent precip event on LI. 

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1 hour ago, jm1220 said:

Typical. We’re in the time of the year where we pull teeth to get any decent precip event on LI. 

A # of us think best way to get heavy QPF on LI, se coastal New England including Cape Cod: WARM front south with WAA as the front advances northward toward LI and CC with PWAT growing and a nice inflow at 850MB.   The lift seems to do the trick w thunderstorms and/or heavy showers. 

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Tomorrow will be mainly sunny and slightly cooler than normal. Afterward, a warming trend will likely develop as some of the heat baking the Southwest moves into the region. The temperature could reach or exceed 90° in parts of the region during the weekend.

Out West, an extreme heatwave continued in the Southwest, including Phoenix. High temperatures included:

Albuquerque: 100° (tied record set in 1980)
Blythe, CA: 113°
Casper: 96° (old record: 94°, 1988)
Death Valley, CA: 125°
Denver: 100° (old record: 96°, 2020)
Flagstaff: 92° (tied record set in 1940)
Las Vegas: 116° (old record: 114°, 1940)
Needles, CA: 118° (tied record set in 2000)
Phoenix: 115° (tied record set in 1896 and tied in 1974)
Salt Lake City: 97°
Tucson: 114° (old record: 109°, 1985 and 1988) ***5th consecutive record high temperature***

At Tucson, the temperature reached 110° or above for the fifth consecutive day. That ties June 24-28, 1990 for the second longest streak on record. Records go back to September 1894.

At Denver, the temperature reached 100° for the second consecutive day. This is the earliest two consecutive-day period on record where the temperature reached or exceeded 100° at Denver. The prior record was set during June 22-23, 2012.

The extreme heat will continue into the weekend. The temperature could reach 115° on multiple days in Phoenix during this time. For reference, Phoenix's daily records for the June 17-19 period are posted below.

Record high maximum temperatures:

June 17: 114°, 2014
June 18: 115°, 1989 and 2015
June 19: 118°, 2016 and 2017

Record high minimum temperatures:

June 17: 88°, 1986 and 2008
June 18: 88°, 2008
June 19: 86°, 1958 and 1959

Phoenix will very likely see the earliest temperature above 115° on record tomorrow. The existing record was set on June 19, 2016 when the temperature reached 118°. That record was tied in 2017.

The ENSO Region 1+2 anomaly was 0.0°C and the Region 3.4 anomaly was 0.0°C for the week centered around June 9. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.48°C and the ENSO Region 3.4 anomaly has averaged -0.23°C. Neutral ENSO conditions will likely prevail into at least mid-summer.

The SOI was +17.15 today.

The preliminary Arctic Oscillation (AO) figure was +1.172 today.

On June 14 the MJO was in Phase 2 at an amplitude of 1.290 (RMM). The June 13-adjusted amplitude was 1.265 (RMM).

In late April, the MJO moved through Phase 8 at an extreme amplitude (+3.000 or above). Only February 25, 1988 and March 18-19, 2015 had a higher amplitude at Phase 8. Both 1988 and 2015 went on to have an exceptionally warm July-August period. July-August 1988 had a mean temperature of 79.1°, which ranked 4th highest for that two-month period. July-August 2015 had a mean temperature of 78.9°, which ranked 5th highest for that two-month period. September 2015 was also the warmest September on record. The MJO's extreme passage through Phase 8 could provide the first hint of a hot summer.

Since 1896, 76% of years that saw Phoenix reach 115° or above in June, as occurred this year, had a warmer than July-August in the Middle Atlantic region. The ratio of top 30 July-August temperatures relative to bottom 30 temperatures was 6:1 in favor of the warmth. Overall, the ingredients continue to fall into place for a warmer than normal to potentially hot summer.

Based on sensitivity analysis applied to the latest guidance, there is an implied 74% probability that New York City will have a warmer than normal June (1991-2020 normal). June will likely finish with a mean temperature near 74.0° (2.0° above normal).

 

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17 hours ago, bluewave said:

Yeah, that was the first summer with such high dew points and heat indices.

9ABAEDDC-D842-496F-95E3-C06B0E6FC696.thumb.png.43fd65e9f00d98c8eafec6a4c7d3bfbd.png

0ED98509-7BB9-4570-9368-AB3B8DE00329.thumb.png.a10c02cb2b687f3a03b597e2101d3a68.png

wow 1999 and 2011 are on that highest heat index list a lot too.  Impressive that they calculate it to hundredths of a degree lol.  Most of the days on the first graph had highs at or above 100.

Interesting that none of those highest dew point days on the second graph had a high temp at or above 100?

 

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The next 8 days are averaging 76degs.(66/85), or +2.5.

Month to is  72.8[+2.9].       Should be about 73.8[+2.6] by the 25th.

June 18-22 near HW criteria.

EURO with 3" 10 days from now----GFS with same system lagging by two days, and little rain when it does get here.

62*(40%RH) here at 6am, m. clear.         70* by Noon.

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Morning thoughts...

Today will be mostly sunny and pleasant. Temperatures will likely reach the upper 70s and lower 80s in most places. Likely high temperatures around the region include:

New York City (Central Park): 78°

Newark: 83°

Philadelphia: 79°

Normals:

New York City: 30-Year: 80.3°; 15-Year: 80.1°

Newark: 30-Year: 82.5°; 15-Year: 82.5°

Philadelphia: 30-Year: 83.8°; 15-Year: 84.0°

A warming trend will begin tomorrow ahead of a very warm weekend.

Out West, record-breaking heat will continue across the Southwest, including Phoenix. Phoenix will likely see its earliest 116° or above temperature on record today.

Daily Records for June 17:

Phoenix: 114°, 1896 and 2015 (Forecast: 115° to 119°) 

Tucson: 109°, 1917, 1985, 1989, 2008, and 2015 (Forecast: 110° to 114°)

*-Forecast range is 1 sigma below and above the forecast mean.

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Continue to monitor Trop system for infusion qpf into NYC subforum Tuesday - if it misses southeast of us,  then it looks rather dry to me the rest of June, despite few cfp severe weather threats.  
 

I like the Great Lakes  trough developing early next week to draw some of the tropical moisture up here for 12 hours but do realize this could still track south of us.    Have a day. Walt

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