Occasional updates will be posted below on the heavy rain, wind and severe thunderstorm event affecting the region today and tonight. Updates will also be posted on Twitter.
Final storm rain totals in NYC: (Updated 8 AM)
Central Park – 1.58″
JFK Airport – 1.14″
LaGuardia – 1.13″
Blog Updates: (Regional radar from the National Weather Service)
12:15 AM Storm Update
As of 12 AM, the low pressure is located off the New Jersey coast, approximately east of Philadelphia and south of western LI. The minimum pressure is near 996-997 mb and the low is tracking to the east.
Light to moderate rain continued to fall over the last 2 hours, locally heavy in LI and southern CT, with rain totals so far generally between 3/4 and 1.25 inch, locally higher in some spots. Light to moderate rain will continue to fall through the mid overnight hours as temperatures fall into the 50s with a breezy NE wind later turning to the north, with the rain mostly ending by Friday morning except for Long Island and southern CT, which will see showers persisting a bit longer. Friday will otherwise be mostly cloudy with highs in the upper 60s to low 70s along with a risk of scattered showers from NYC and further north/west in the afternoon and evening hours.
So far, Central Park is at 1.15″ for the storm, with the final storm total likely approaching 1.5 inch. This will place this month at least as the 3rd wettest June on record; currently, 1903 is the 3rd wettest June on record with 9.78″, followed by 2009 with 10.06″ and 2003 with 10.27″. Additional rain is expected next week, and this month is still on track to become the wettest June on record in NYC and perhaps one of the 10 wettest months on record.
This is the final storm update for tonight. A forecast update will be posted on Friday morning, followed by a post-storm analysis on Friday night or Saturday morning.
10:15 PM Storm Update
The complicated forecasting of this storm continues, as after dry conditions for the majority of the day, with much less rain than expected falling through the late afternoon hours, the current round of rain is overperforming for parts of the region compared to the earlier expectations for tonight, with heavy rain and thunder having affected NYC earlier before shifting into Long Island and CT, where widespread moderate to heavy rain is currently falling; these storms have produced 1/2 to 3/4 inch for some locations in just an hour. As such, the storm total rain forecast for the area was slightly increased again to 1-2 inches, locally higher, as was forecast from earlier this morning. Steady rain will continue to fall through the early-mid overnight hours with temperatures gradually falling into the 50s, with the rain gradually tapering off from west to east with Long Island expected to see showers through Friday morning.
Storm updates will continue to be posted through 12 AM; the forecast discussion originally planned for tonight will be posted on Friday morning instead. A post-storm overview will be posted on Friday night or Saturday morning, analyzing the forecasting of this storm and what went wrong with the forecast.
9:15 PM Storm Update
As of 9 PM, the low pressure was located over central New Jersey, approximately east of Philadelphia. The minimum pressure is about 997 mb, and the low is tracking to the east.
Since the last update, the low pressure shifted southeast from northern PA into central NJ as expected, and will continue to track east and offshore. Since 6-7 PM, another round of rain moved into the area, with locally heavy rainfall observed in parts of NYC and Long Island. Currently, light rain is redeveloping across northern NJ, with another band of moderate rain over NE PA and southern NY to continue sliding SE, keeping steady light to moderate rain over the area through the mid-late overnight hours west of NYC and into Friday morning east of NYC, with temperatures gradually falling into the 50s in the next few hours as the wind direction shifts to the north.
Another 1/2 to 1 inch, locally higher to the north of NYC, is expected with the upcoming round of rain, although the recent heavy thunderstorms increased totals across parts of the area as well, with localized totals near 1 inch in Long Island and NYC so far. Storm totals are expected to end up between 1 and 2 inches across the area.
5:00 PM Update: A weak line of showers and thunderstorms is developing over northeast PA, with a heavy thunderstorm near Allentown, PA, moving east. This area of rain is likely to reach most of the area by 5:30 to 7 PM, with rain and thunder redeveloping for the evening, followed by occasional showers through the mid overnight hours. At least another 1/2 inch of rain is expected tonight for most places, up to 1 inch in some areas.