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

[bluewave]

3 hours ago, LibertyBell said:

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?

 

Areas closer to Southern NJ did.

Data for February 18, 1979 through February 19, 1979
Click column heading to sort ascending, click again to sort descending.

TUCKERTON 2 NE	COOP	21.0
ESTELL MANOR	COOP	19.4
CAPE MAY 2 NW	COOP	18.2
FLEMINGTON 5 NNW	COOP	18.0
RAHWAY	COOP	18.0
ATLANTIC CITY INTL AP	WBAN	17.1
Atlantic City Area	ThreadEx	17.1
WOODSTOWN PITTSGROV 4E	COOP	17.0
PLAINFIELD	COOP	17.0
NEWARK LIBERTY INTL AP	WBAN	16.6
Newark Area	ThreadEx	16.6
AUDUBON	COOP	14.0
BELVIDERE	COOP	14.0
Belvidere Area	ThreadEx	14.0
MORRIS PLAINS 1 W	COOP	12.5
MILLVILLE MUNICIPAL AIRPORT	WBAN	12.0
PEMBERTON	COOP	12.0
MOORESTOWN 4 E	COOP	12.0
LAMBERTVILLE	COOP	12.0
INDIAN MILLS 2 W	COOP	11.6
CRANFORD	COOP	11.0
CANOE BROOK	COOP	11.0
MIDLAND PARK	COOP	11.0
FREEHOLD-MARLBORO	COOP	10.5
SANDY HOOK	COOP	10.0

 

[psv88]

There’s the sun. Beautiful now 

[FPizz]

3 hours ago, winterwarlock said:

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

Yeah, still socked in clouds.  72 now

[bluewave]

5 hours ago, steve392 said:

OMG that is just glorious!

Still the record for number of days with lows at or below 0° at Islip.

Time Series Summary for ISLIP-LI MACARTHUR AP, NY - Dec through Feb Days with low temperature at or below 0°
Click column heading to sort ascending, click again to sort descending.

1	1978-1979	6	0
2	1964-1965	4	0
3	1967-1968	3	0
-	1966-1967	3	0
4	1987-1988	2	0
-	1983-1984	2	0
-	1981-1982	2	0
-	1980-1981	2	0
5	2015-2016	1	0
-	2013-2014	1	0
-	1984-1985	1	0
-	1976-1977	1	0
-	1975-1976	1	0
-	1973-1974	1	0
-	1969-1970	1	0
-	1963-1964	1	2

 

Data for December 1, 1978 through February 28, 1979 Days with low temperature at of below 0°
Click column heading to sort ascending, click again to sort descending.

NY	WALDEN 1 ESE	COOP	16
NJ	CANOE BROOK	COOP	11
NJ	CHARLOTTEBURG RESERVOIR	COOP	11
NY	YORKTOWN HEIGHTS 1W	COOP	11
NY	CARMEL	COOP	10
CT	NORWALK GAS PLANT	COOP	9
NY	WESTCHESTER CO AP	WBAN	9
NY	PORT JERVIS	COOP	8
NJ	CRANFORD	COOP	8
NJ	LITTLE FALLS	COOP	8
NJ	WANAQUE RAYMOND DAM	COOP	8
NY	SUFFERN	COOP	8
CT	MIDDLETOWN 4 W	COOP	8
CT	NORWICH PUBLIC UTILITY PLANT	COOP	8
NJ	JERSEY CITY	COOP	7
NY	MIDDLETOWN 2 NW	COOP	7
CT	STAMFORD 5 N	COOP	7
CT	DANBURY	COOP	7
NY	SCARSDALE	COOP	7
CT	MOUNT CARMEL	COOP	7
CT	GROTON	COOP	7
NJ	PLAINFIELD	COOP	6
NY	WEST POINT	COOP	6
NY	PATCHOGUE 2 N	COOP	6
NY	ISLIP-LI MACARTHUR AP	WBAN	6
NJ	NEWARK LIBERTY INTL AP	WBAN	5
NY	DOBBS FERRY-ARDSLEY	COOP	5
NY	VANDERBILT MUSEUM	COOP	5
CT	NEW HAVEN	COOP	5
NY	SETAUKET STRONG	COOP	5