September 2025 OBS-Discussion centered NYC subforum

[LibertyBell]

6 minutes ago, bluewave said:

Still the coldest 14 day period at Islip.

Minimum 14-Day Mean Avg Temperature 
for ISLIP-LI MACARTHUR AP, NY
Click column heading to sort ascending, click again to sort descending.

Period of record: 1963-09-05 to 2025-09-21
1	11.4	1979-02-06 through 1979-02-19	0
2	11.5	1979-02-07 through 1979-02-20	0
3	11.9	1979-02-05 through 1979-02-18	0
4	12.5	1979-02-08 through 1979-02-21	0
5	13.4	1979-02-04 through 1979-02-17	0
6	13.8	1979-02-09 through 1979-02-22	0
7	14.6	1967-12-31 through 1968-01-13	0
8	14.8	1967-12-30 through 1968-01-12	0
9	15.0	1979-02-03 through 1979-02-16	0
10	15.4	1979-02-10 through 1979-02-23	0
11	15.5	1968-01-01 through 1968-01-14	0
12	15.9	1979-02-02 through 1979-02-15	0
13	16.0	1967-12-29 through 1968-01-11	0
14	16.3	1968-01-02 through 1968-01-15	0
15	16.3	1968-01-04 through 1968-01-17	0
16	16.5	1979-02-01 through 1979-02-14	0
-	16.5	1968-01-05 through 1968-01-18	0
17	16.8	1968-01-03 through 1968-01-16	0
18	17.2	1977-01-11 through 1977-01-24	0
19	17.4	2017-12-26 through 2018-01-08	0
20	17.4	1981-01-01 through 1981-01-14	0
21	17.5	1981-01-03 through 1981-01-16	0
-	17.5	1981-01-02 through 1981-01-15	0
22	17.7	1980-12-31 through 1981-01-13	0
-	17.7	1967-12-28 through 1968-01-10	0

 

1979-02-06	25	13	19.0	-12.9	46	0	0.00	0.0	0
1979-02-07	22	13	17.5	-14.5	47	0	0.65	6.5	0
1979-02-08	30	17	23.5	-8.6	41	0	0.03	0.3	7
1979-02-09	19	8	13.5	-18.7	51	0	0.00	0.0	6
1979-02-10	15	-1	7.0	-25.4	58	0	0.00	0.0	5
1979-02-11	11	-2	4.5	-28.0	60	0	0.00	0.0	4
1979-02-12	15	-6	4.5	-28.2	60	0	0.09	0.9	2
1979-02-13	12	5	8.5	-24.3	56	0	T	T	3
1979-02-14	13	-1	6.0	-27.0	59	0	0.00	0.0	3
1979-02-15	20	9	14.5	-18.6	50	0	T	T	2
1979-02-16	18	8	13.0	-20.3	52	0	0.02	0.2	1
1979-02-17	10	0	5.0	-28.5	60	0	0.00	0.0	1
1979-02-18	14	-2	6.0	-27.7	59	0	0.00	0.0	1
1979-02-19	24	10	17.0	-16.9	48	0	0.88	8.8	2

We had PD1 in February that winter that fringed the area but was still enough for over a foot of snow for the city and Long Island.  I wonder if anyone on the south shore saw close to 20 inches in that storm?

 

[LibertyBell]

1 minute ago, SACRUS said:

 

Current SST anolaly

 

 

This looks like a good pattern for snowy noreasters in the winter if we get the right storm tracks.

Forget tropical threats I'm completely over the tropical *season* or lack thereof.

 

[steve392]

15 minutes ago, bluewave said:

Still the coldest 14 day period at Islip.

Minimum 14-Day Mean Avg Temperature 
for ISLIP-LI MACARTHUR AP, NY
Click column heading to sort ascending, click again to sort descending.

Period of record: 1963-09-05 to 2025-09-21
1	11.4	1979-02-06 through 1979-02-19	0
2	11.5	1979-02-07 through 1979-02-20	0
3	11.9	1979-02-05 through 1979-02-18	0
4	12.5	1979-02-08 through 1979-02-21	0
5	13.4	1979-02-04 through 1979-02-17	0
6	13.8	1979-02-09 through 1979-02-22	0
7	14.6	1967-12-31 through 1968-01-13	0
8	14.8	1967-12-30 through 1968-01-12	0
9	15.0	1979-02-03 through 1979-02-16	0
10	15.4	1979-02-10 through 1979-02-23	0
11	15.5	1968-01-01 through 1968-01-14	0
12	15.9	1979-02-02 through 1979-02-15	0
13	16.0	1967-12-29 through 1968-01-11	0
14	16.3	1968-01-02 through 1968-01-15	0
15	16.3	1968-01-04 through 1968-01-17	0
16	16.5	1979-02-01 through 1979-02-14	0
-	16.5	1968-01-05 through 1968-01-18	0
17	16.8	1968-01-03 through 1968-01-16	0
18	17.2	1977-01-11 through 1977-01-24	0
19	17.4	2017-12-26 through 2018-01-08	0
20	17.4	1981-01-01 through 1981-01-14	0
21	17.5	1981-01-03 through 1981-01-16	0
-	17.5	1981-01-02 through 1981-01-15	0
22	17.7	1980-12-31 through 1981-01-13	0
-	17.7	1967-12-28 through 1968-01-10	0

 

1979-02-06	25	13	19.0	-12.9	46	0	0.00	0.0	0
1979-02-07	22	13	17.5	-14.5	47	0	0.65	6.5	0
1979-02-08	30	17	23.5	-8.6	41	0	0.03	0.3	7
1979-02-09	19	8	13.5	-18.7	51	0	0.00	0.0	6
1979-02-10	15	-1	7.0	-25.4	58	0	0.00	0.0	5
1979-02-11	11	-2	4.5	-28.0	60	0	0.00	0.0	4
1979-02-12	15	-6	4.5	-28.2	60	0	0.09	0.9	2
1979-02-13	12	5	8.5	-24.3	56	0	T	T	3
1979-02-14	13	-1	6.0	-27.0	59	0	0.00	0.0	3
1979-02-15	20	9	14.5	-18.6	50	0	T	T	2
1979-02-16	18	8	13.0	-20.3	52	0	0.02	0.2	1
1979-02-17	10	0	5.0	-28.5	60	0	0.00	0.0	1
1979-02-18	14	-2	6.0	-27.7	59	0	0.00	0.0	1
1979-02-19	24	10	17.0	-16.9	48	0	0.88	8.8	2

OMG that is just glorious!

[NorthShoreWx]

32 minutes ago, bluewave said:

 Islip.

 

1979-02-06	25	13	19.0	-12.9	46	0	0.00	0.0	0
1979-02-07	22	13	17.5	-14.5	47	0	0.65	6.5	0
1979-02-08	30	17	23.5	-8.6	41	0	0.03	0.3	7
1979-02-09	19	8	13.5	-18.7	51	0	0.00	0.0	6
1979-02-10	15	-1	7.0	-25.4	58	0	0.00	0.0	5
1979-02-11	11	-2	4.5	-28.0	60	0	0.00	0.0	4
1979-02-12	15	-6	4.5	-28.2	60	0	0.09	0.9	2
1979-02-13	12	5	8.5	-24.3	56	0	T	T	3
1979-02-14	13	-1	6.0	-27.0	59	0	0.00	0.0	3
1979-02-15	20	9	14.5	-18.6	50	0	T	T	2
1979-02-16	18	8	13.0	-20.3	52	0	0.02	0.2	1
1979-02-17	10	0	5.0	-28.5	60	0	0.00	0.0	1
1979-02-18	14	-2	6.0	-27.7	59	0	0.00	0.0	1
1979-02-19	24	10	17.0	-16.9	48	0	0.88	8.8	2

I have never been able to unravel the mystery of airport snow-depth reporting.

[Sundog]

55 minutes ago, LibertyBell said:

Yeah and it's almost comical how quickly the changeover comes in.

I'll tell you what the "fake cold" is good for though, cooling surfaces down so that when it starts to snow it sticks better. 

Many times the city will get snow, but we are sitting in the upper 30s waiting for precip to drag our temps down to freezing. Meanwhile several hours earlier some locations were radiating and cooled into the 20s while skies were still clear. That allowed for surfaces to cool down nicely so that even if temps did jump back to the mid 30s when clouds moved in, surfaces are not cooling down from being in the 40s because of solar insolation from earlier in the day, they are warming up from being in the 20s. 

It makes a nice difference in terms of stickage.  

[LibertyBell]

3 minutes ago, Sundog said:

I'll tell you what the "fake cold" is good for though, cooling surfaces down so that when it starts to snow it sticks better. 

Many times the city will get snow, but we are sitting in the upper 30s waiting for precip to drag our temps down to freezing. Meanwhile several hours earlier some locations were radiating and cooled into the 20s while skies were still clear. That allowed for surfaces to cool down nicely so that even if temps did jump back to the mid 30s when clouds moved in, surfaces are not cooling down from being in the 40s because of solar insolation from earlier in the day, they are warming up from being in the 20s. 

It makes a nice difference in tyerms of stickage.  

I remember this happening during an SWFE back in February 2008 and it was a big surprise 6-8 inches of snow -- the changeover happened after the heaviest snow moved away and ended as drizzle.  Everything had to be timed just right, the heavy snow came in like a wall at around 2-3 am and it snowed heavily into the morning and ended around 9 am as drizzle.  It came in so quickly that it just didn't have a chance to changeover during the meat of the storm.

 

[NorthShoreWx]

48.7° low this morning.  

[LibertyBell]

13 minutes ago, NorthShoreWx said:

I have never been able to unravel the mystery of airport snow-depth reporting.

Islip had some weird snowfall reporting back then, thankfully their snowfall reporting was good for February 1978 (unlike JFK).

[LibertyBell]

33 minutes ago, steve392 said:

OMG that is just glorious!

I see 2017-2018 is on that list too  that was one of our greatest bookend winters.

 

[LibertyBell]

1 hour ago, MANDA said:

WPC usually on the conservative side so if you are looking / hoping for meaningful rain you gotta like the look of this.  As Walt said still a ways off and details not solid but nice starting point.

we really do not need or want this much flooding rain, 1-2 inches of rain like before is just fine and not days and days of depressing cloudiness either.

 

[NorthShoreWx]

15 minutes ago, LibertyBell said:

Islip had some weird snowfall reporting back then, thankfully their snowfall reporting was good for February 1978 (unlike JFK).

I said "snow depth"  That mystery hasn't changed.  FWIW those daily snowfall totals from ISP in 1979 look reasonable.  Here is Syosset comparison for the same period:

 

	Syosset	ISP
1979	F E B	F E B
Day
6	0.0	0.0
7	6.3	6.5
8	T	0.3
9	0.0	0.0
10	0.0	0.0
11	0.0	0.0
12	1.5	0.9
13	T	T
14	0.0	0.0
15	1.0	T
16	0.2	0.2
17	0.0	0.0
18	0.0	0.0
19	10.1	8.8

 

[LibertyBell]

9 minutes ago, NorthShoreWx said:

I said "snow depth"  That hasn't changed.  FWIW those daily snowfall totals from ISP in 1979 look reasonable.  Here is Syosset comparison for the same period:

 

	Syosset	ISP
1979	F E B	F E B
Day
6	0.0	0.0
7	6.3	6.5
8	T	0.3
9	0.0	0.0
10	0.0	0.0
11	0.0	0.0
12	1.5	0.9
13	T	T
14	0.0	0.0
15	1.0	T
16	0.2	0.2
17	0.0	0.0
18	0.0	0.0
19	10.1	8.8

 

PD1 was pretty big, there must have been more snowfall than ISP at JFK and some of the other south shore locations.

 

[NorthShoreWx]

2 minutes ago, LibertyBell said:

PD1 was pretty big, there must have been more snowfall than ISP at JFK and some of the other south shore locations.

 

JFK reported 10"

[LibertyBell]

Just now, NorthShoreWx said:

JFK reported 10"

Less than Central Park? or about the same, Ed?

[psv88]

So much for that sunny skies forecast 

[NorthShoreWx]

17 minutes ago, LibertyBell said:

Less than Central Park? or about the same, Ed?

12.7" @cp.  I think EWR was the big winner of the NYC area airports, but don't recall their total

 

[winterwarlock]

Mets bust..clouds all day and temps in 60s