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May 2022


bluewave
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Much warmer air will move into the region for tomorrow and Tuesday before another cold front breaks the short warm spell. Some parts of the region could see their highest temperatures so far on Tuesday. Much above normal temperatures will likely persist from Philadelphia southward in the Middle Atlantic region through the middle of next week.

The temperature reached 90° at Galveston, tying the daily record set in 1959. Based on sensitivity analysis applied to the latest guidance, Galveston has an implied near 100% probability of recording its warmest May on record. Galveston will likely finish with a monthly mean temperature near 82.8°. The existing record is 80.4°, which was set in 2018. Galveston has already recorded its most 90° high temperatures and 80° low temperatures on record for May.

Some of the guidance has suggested that June could be warmer than normal in the Middle Atlantic and New England areas. The latest EPS weeklies suggest otherwise.

The ECMWF seasonal forecast indicates that the summer will be warmer than normal throughout the region and across much of North America.

The ENSO Region 1+2 anomaly was -1.5°C and the Region 3.4 anomaly was -1.1°C for the week centered around May 18. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -1.65°C and the ENSO Region 3.4 anomaly has averaged -1.07°C. La Niña conditions will likely persist into the start of June.

The SOI was +27.82 today. That surpassed the daily record of +26.91, which was set in 1994.

The preliminary Arctic Oscillation (AO) was -1.164 today.

On May 27 the MJO was in Phase 6 at an amplitude of 1.256 (RMM). The May 26-adjusted amplitude was 0.807 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 99% probability that New York City will have a warmer than normal May (1991-2020 normal). May will likely finish with a mean temperature near 64.1° (0.9° above normal).

 

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The last 2 days of May are averaging  80degs.(68/93) or +12.

Month to date is  63.2[+0.3].      May should end at  64.3[+1.1].

Reached 72 yesterday.

Today: 83-88, wind w., m. clear, 72 tomorrow AM.

Looks like BN precipitation the next 10 days and that could be mean Ts AN.

Want to bet on an AN Summer around here?         Then you will have to be willing to risk  $3.50 in order to win $1.00:      We'll check back in 94 days.

[New Forecast]

 

The CFSv2 for the about the first half of the summer is certainly not in agreement with the above:

1657756800-Fhl5oAPERKs.png

64*(90%RH) here at 7am.      74* at Noon.          Really the T spent all PM and evening at just 74/75----75* still at 10pm.

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The May minimum temperatures were especially warm from White Plains to Danbury with the persistent onshore flow. Average minimum temperatures at White Plains were the 5th warmest on record for May. While the Danbury record only goes back to 1998, it was the warmest on record for May.

Time Series Summary for WESTCHESTER CO AP, NY - Month of May
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Min Temperature 
Missing Count
1 2012 55.0 0
2 2018 53.9 0
3 1991 53.8 1
4 1998 53.2 1
- 1965 53.2 0
5 2022 52.8 2
6 2011 52.6 0
7 1985 52.2 2
8 2015 52.1 0
9 1959 51.9 0
10 1964 51.8 0


 

Time Series Summary for DANBURY MUNICIPAL AP, CT - Month of May
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Min Temperature 
Missing Count
1 2022 53.2 2
2 2012 52.6 0
3 2018 51.4 1
4 2004 50.8 0
5 2015 49.6 0


EBE2F44A-AEC5-4AD8-B97B-AD14782B9E7B.thumb.png.8ea80c7173a43cf735c24422e21b3f87.png

2CCE9E21-66E8-4A3B-AFCC-95DF0E98228B.thumb.png.cc67d444ecc8f276dd9448d9ef6b00d5.png

 

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Morning thoughts…

Today will be partly sunny and very warm. High temperatures will reach the upper 80s and lower 90s in much of the region. Likely high temperatures around the region include:

New York City (Central Park): 87°

Newark: 91°

Philadelphia: 91°

Tomorrow will likely see the highest temperatures so far this year in parts of the region.

Normals:

New York City: 30-Year: 74.9°; 15-Year: 75.3°

Newark: 30-Year: 76.5°; 15-Year: 77.1°

Philadelphia: 30-Year: 78.2°; 15-Year: 78.7°

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Tomorrow will be a hot day with readings soaring into the 90s in much of the region. However, a backdoor cold front will break the warm spell in parts of the region afterward. As the cold front moves across Long Island, temperatures could plunge by 20°-30° in a matter of hours. Much above normal temperatures will likely persist from Philadelphia southward in the Middle Atlantic region through the middle of the week.

Based on sensitivity analysis applied to the latest guidance, Galveston has an implied near 100% probability of recording its warmest May on record. Galveston will likely finish with a monthly mean temperature near 82.9°. The existing record is 80.4°, which was set in 2018. Galveston has already recorded its most 90° high temperatures and 80° low temperatures on record for May.

Some of the guidance has suggested that June could be warmer than normal in the Middle Atlantic and New England areas. The latest EPS weeklies suggest otherwise.

The ECMWF seasonal forecast indicates that the summer will be warmer than normal throughout the region and across much of North America.

The ENSO Region 1+2 anomaly was -1.5°C and the Region 3.4 anomaly was -1.1°C for the week centered around May 18. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -1.65°C and the ENSO Region 3.4 anomaly has averaged -1.07°C. La Niña conditions will likely persist through the summer.

The SOI was +31.12 today. That broke the daily record of +25.53 from 2014.

The preliminary Arctic Oscillation (AO) was -1.897 today.

On May 28 the MJO was in Phase 6 at an amplitude of 1.390 (RMM). The May 27-adjusted amplitude was 1.254 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied near 100% probability that New York City will have a warmer than normal May (1991-2020 normal). May will likely finish with a mean temperature near 64.0° (0.8° above normal).

 

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20 hours ago, bluewave said:

The May minimum temperatures were especially warm from White Plains to Danbury with the persistent onshore flow. Average minimum temperatures at White Plains were the 5th warmest on record for May. While the Danbury record only goes back to 1998, it was the warmest on record for May.

Time Series Summary for WESTCHESTER CO AP, NY - Month of May
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Min Temperature 
Missing Count
1 2012 55.0 0
2 2018 53.9 0
3 1991 53.8 1
4 1998 53.2 1
- 1965 53.2 0
5 2022 52.8 2
6 2011 52.6 0
7 1985 52.2 2
8 2015 52.1 0
9 1959 51.9 0
10 1964 51.8 0


 

Time Series Summary for DANBURY MUNICIPAL AP, CT - Month of May
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Min Temperature 
Missing Count
1 2022 53.2 2
2 2012 52.6 0
3 2018 51.4 1
4 2004 50.8 0
5 2015 49.6 0


EBE2F44A-AEC5-4AD8-B97B-AD14782B9E7B.thumb.png.8ea80c7173a43cf735c24422e21b3f87.png

2CCE9E21-66E8-4A3B-AFCC-95DF0E98228B.thumb.png.cc67d444ecc8f276dd9448d9ef6b00d5.png

 

Looks like temperatures dont exist on Long Island

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Morning thoughts…

Today will be partly sunny and hot. High temperatures will range from the upper 80s along the coastline to the middle 90s in interior sections. Likely high temperatures around the region include:

New York City (Central Park): 93°

Newark: 97°

Philadelphia: 97°

Tomorrow be noticeably cooler in much of the region. Much above normal temperatures will likely persist from Philadelphia southward.

Normals:

New York City: 30-Year: 75.2°; 15-Year: 75.5°

Newark: 30-Year: 76.8°; 15-Year: 77.4°

Philadelphia: 30-Year: 78.5°; 15-Year: 79.0°

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