Alert archive / New York / Flash Flood Warnings in 2021
Flash Flood Warning 40, NWS New York, NY
NWS New York, NY issued this flash flood warning at Sep 1, 2021, 9:28 PM EDT for 5 counties in New York. It was in force for 2 hr. 24 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 1, 2021, 9:28 PM EDT (01:28 UTC)
- Expired
- Sep 1, 2021, 11:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Emergency
- Flash flood emergency
- Damage threat
- Catastrophic
- Flood severity
- None
Counties Bronx County, NY, Kings County, NY, New York County, NY, Queens County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 82 km from the middle of the area, began a volume at 01:28 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 1, 9:30 PM EDT | FLASH FLOOD | 1 Ene Greenville, NY | WIDESPREAD ROAD CLOSURE ALONG BRONX RIVER PKWY. |
| Sep 1, 9:45 PM EDT | FLASH FLOOD | 1 E Hastings-On-Hudson, NY | SOUTHBOUND SAW MILL RIVER PARKWAY FLOODED AT CLARENCE AVENUE. |
| Sep 1, 10:00 PM EDT | FLASH FLOOD | 1 W Elmhurst, NY | BASEMENT APARTMENT NEAR 64TH STREET AND LAUREL HILL BLVD FLOODED. 3 FATALITIES REPORTED. |
| Sep 1, 10:00 PM EDT | FLASH FLOOD | 3 Ssw Elmhurst, NY | HOMES AND BASEMENTS FLOODING ON WOODBINE STREET IN RIDGEWOOD QUEENS. |
| Sep 1, 10:02 PM EDT | FLASH FLOOD | 1 Nnw Howard Beach, NY | PUBLIC REPORTS BASEMENT FLOODED. |
| Sep 1, 10:07 PM EDT | FLASH FLOOD | 2 W Elmhurst, NY | QUEENS BOULEVARD IN MASPETH/CORONA HAS ABOUT 2 TO 4 FT OF FLOWING WATER RUNNING ACROSS THE STREET. MULTIPLE CARS ARE STRANDED. |
| Sep 1, 10:09 PM EDT | FLASH FLOOD | 2 N Bay Ridge, NY | ONE TO TWO FEET OF WATER COVERING THE ROAD AND CARS DISABLED IN THE ROADWAY ON 2ND AVENUE BETWEEN 59TH AND 60TH STREET. |
| Sep 1, 10:12 PM EDT | FLASH FLOOD | Rye, NY | SEVERAL CARS DROVE AROUND BARRICADES AND ARE NOW STUCK IN FLOODWATERS. |
| Sep 1, 10:17 PM EDT | FLASH FLOOD | 1 Ssw Washington Height, NY | ALL SOUTHBOUND LANES OF THE HARLEM RIVER DRIVE ARE CLOSED DUE TO FLOODING AT WEST 166TH STREET. |
| Sep 1, 10:22 PM EDT | FLASH FLOOD | Port Chester, NY | FLOOD WATERSR UP TO THE HOOD OF CARS ON GLEN AVE AND HASECO AVE IN PORT CHESTER. |
| Sep 1, 10:30 PM EDT | FLASH FLOOD | 1 E Parkchester, NY | FLOODING IN BASEMENT. WATER 3 FEET DEEP. |
| Sep 1, 10:30 PM EDT | FLASH FLOOD | 3 W Crown Heights, NY | WATER SPILLING INTO HOME THROUGH DOORS AS GROUND DRAINS BECAME OVERWHELMED AND/OR CLOGGED. 2 INCHES OF WATER IN BASEMENT. |
| Sep 1, 10:38 PM EDT | FLASH FLOOD | Pelham, NY | HUTCHINSON RIVER PARKWAY CLOSED BOTH DIRECTIONS BETWEEN CROSS COUNTY PARKWAY AND 1-95 BRONX DUE TO FLOODING. |
| Sep 1, 10:41 PM EDT | FLASH FLOOD | 2 Wnw Jamaica, NY | ALL EASTBOUND LANES OF THE GRAND CENTRAL PARKWAY CLOSED AT THE VAN WYCK EXPRESSWAY. |
| Sep 1, 10:45 PM EDT | FLASH FLOOD | 1 Ssw Rye, NY | BASEMENT FLOODING IN HOUSE ON THORNE PL IN RYE. |
| Sep 1, 10:45 PM EDT | FLASH FLOOD | Greenwich Village, NY | FLOODING AT THE 28TH STREET/7TH AVENUE STATION ON THE NEW YORK CITY SUBWAY. |
| Sep 1, 10:50 PM EDT | FLASH FLOOD | 1 E Jamaica, NY | WATER ENTERING HOME. |
| Sep 1, 10:57 PM EDT | FLASH FLOOD | Midtown Manhattan, NY | THE NEW YORK CITY SUBWAY IS EXPERIENCING FLOODING IN MANY AREAS OF ITS SYSTEM. THE MTA REPORTS SERVICE IS EXTREMELY LIMITED TONIGHT DUE TO THE FLOODING. |
| Sep 1, 11:00 PM EDT | FLASH FLOOD | 1 E Jamaica, NY | BASEMENT APARTMENT WALL COLLAPSED DUE TO FLOODING. TWO FATALITIES AND TWO WATER RESCUES WERE REPORTED. |
| Sep 1, 11:00 PM EDT | FLASH FLOOD | 1 W Ozone Park, NY | BASEMENT APARTMENT FLOODED ON RIDGEWOOD AVENUE NEAR AUTUMN AVENUE. 1 FATALITY REPORTED. |
| Sep 1, 11:00 PM EDT | FLASH FLOOD | 2 E Elmhurst, NY | BASEMENT IN HOME ON GRAND CENTRAL PARKWAY, NEAR HORACE HARDING EXPRESSWAY, FLOODED. 1 FATALITY REPORTED. |
| Sep 1, 11:00 PM EDT | FLASH FLOOD | Elmhurst, NY | BASEMENT APARTMENT FLOODED ON 84TH STREET, NEAR 55TH ROAD, IN ELMHURST QUEENS. 1 FATALITY REPORTED. |
| Sep 1, 11:30 PM EDT | FLASH FLOOD | 2 Nne Jamaica, NY | 2 TO 3 FOOT DEEP WATER ON ROADWAYS IN FRESH MEADOWS. SEVERAL CARS SUBMERGED. |
| Sep 1, 11:39 PM EDT | FLASH FLOOD | Park Slope, NY | SIGNIFICANT FLOODING WITH AT LEAST 2 TO 4 FEET OF FLOWING WATER ON THE ROAD. SEVERAL CARS STRANDED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 1.5 hours before the alert went out and 82 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 123 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 512 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 279 m²/s²
- 0-3 km storm-relative helicity
- 456 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted.
446
WGUS51 KOKX 020128
FFWOKX
NYC005-047-061-081-119-020330-
/O.NEW.KOKX.FF.W.0040.210902T0128Z-210902T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
928 PM EDT Wed Sep 1 2021
...FLASH FLOOD EMERGENCY FOR NEW YORK CITY METRO...
The National Weather Service in Upton has issued a
* Flash Flood Warning for...
Bronx County in southeastern New York...
Kings (Brooklyn) County in southeastern New York...
New York (Manhattan) County in southeastern New York...
Queens County in southeastern New York...
Southern Westchester County in southeastern New York...
* Until 1130 PM EDT.
* At 928 PM EDT, Doppler radar indicated heavy rain across the
warned area. Between 2 and 3.5 inches of rain have fallen. The
expected rainfall rate is 3 to 5 inches in 1 hour. Flash flooding
is already occurring.
This is a FLASH FLOOD EMERGENCY for New York City Metro. This is a
PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW!
HAZARD...Life threatening flash flooding. Heavy rain producing
flash flooding.
SOURCE...Radar.
IMPACT...This is a PARTICULARLY DANGEROUS SITUATION. SEEK
HIGHER GROUND NOW! Life threatening flash flooding of
low water crossings, small creeks and streams, urban
areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
Jamaica, Yonkers, Flatbush, New Rochelle, Flushing, White Plains,
Mott Haven, East Tremont, Port Chester, Coney Island, Rye,
Rockaway Beach, Crown Heights, Laguardia Airport, Throgs Neck
Bridge, RFK Bridge, Midtown Manhattan, Kennedy Airport, Harlem and
Jackson Heights.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to higher ground now! This is an extremely dangerous and
life-threatening situation. Do not attempt to travel unless you are
fleeing an area subject to flooding or under an evacuation order.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of urban
areas, highways, streets and underpasses as well as other drainage
areas and low lying spots.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4089 7393 4100 7389 4110 7373 4100 7364
4094 7367 4090 7374 4084 7375 4082 7379
4075 7370 4073 7371 4072 7373 4065 7373
4063 7377 4059 7372 4056 7381 4056 7401
4058 7401 4063 7406 4067 7403 4068 7405
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CATASTROPHIC
EXPECTED RAINFALL...3-5 INCHES IN 1 HOUR
$$
FigThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 8:32 PM EDT | Severe Thunderstorm Warning | OKX | New York, Richmond | 43 min |
| Sep 1, 9:03 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Kings, Nassau, New York, Queens, Westchester | 42 min |
| Sep 1, 9:06 PM EDT | Tornado Warning | OKX | Bronx, New York, Westchester | 24 min |
| Sep 1, 9:15 PM EDT | Special Marine Warning | OKX | 60 min | |
| Sep 1, 9:25 PM EDT | Special Marine Warning | OKX | 65 min | |
| Sep 1, 9:25 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Kings, Nassau, New York, Queens, Rockland and 1 more | 65 min |
| Sep 1, 9:34 PM EDT | Special Marine Warning | OKX | 12 min | |
| Sep 1, 9:56 PM EDT | Special Marine Warning | OKX | 34 min | |
| Sep 1, 9:57 PM EDT | Severe Thunderstorm Warning | OKX | Kings, Nassau, Queens | 48 min |
| Sep 1, 10:08 PM EDT | Flash Flood Warning | OKX | Nassau, Westchester | 4 hr |
| Sep 1, 10:09 PM EDT | Special Marine Warning | OKX | 96 min | |
| Sep 1, 10:12 PM EDT | Special Marine Warning | OKX | 20 min | |
| Sep 1, 10:20 PM EDT | Severe Thunderstorm Warning | OKX | Westchester | 55 min |
| Sep 1, 10:26 PM EDT | Special Marine Warning | OKX | 64 min | |
| Sep 1, 10:30 PM EDT | Severe Thunderstorm Warning | OKX | Nassau, Suffolk | 45 min |
| Sep 1, 10:39 PM EDT | Tornado Warning | OKX | Suffolk | 36 min |
| Sep 1, 10:44 PM EDT | Severe Thunderstorm Warning | OKX | Nassau | 46 min |
| Sep 1, 10:47 PM EDT | Special Marine Warning | OKX | 118 min | |
| Sep 1, 10:55 PM EDT | Special Marine Warning | OKX | 45 min | |
| Sep 1, 11:11 PM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 64 min |
| Sep 1, 11:13 PM EDT | Flash Flood Warning | OKX | Suffolk | 6 hr |
| Sep 1, 11:19 PM EDT | Special Marine Warning | OKX | 86 min | |
| Sep 1, 11:54 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, New York, Queens, Richmond, Westchester | 3 hr |
| Sep 2, 12:13 AM EDT | Severe Thunderstorm Warning | OKX | Suffolk | 92 min |
| Sep 2, 12:25 AM EDT | Flash Flood Warning | OKX | Nassau, Queens, Suffolk | 4 hr |
| Sep 2, 12:28 AM EDT | Special Marine Warning | OKX | 92 min | |
| Sep 2, 12:48 AM EDT | River Flood Warning | OKX | Orange, Ulster | 12 hr |
| Sep 2, 1:06 AM EDT | Areal Flood Warning | OKX | Orange, Putnam, Rockland, Westchester | 4 hr |
| Sep 2, 1:50 AM EDT | Special Weather Statement | OKX | Suffolk | 40 min |
| Sep 2, 1:57 AM EDT | Special Marine Warning | OKX | 80 min | |
| Sep 2, 2:30 AM EDT | Areal Flood Warning | OKX | Bronx, Nassau, Putnam, Queens, Rockland, Suffolk and 1 more | 8 hr |
| Sep 2, 2:53 AM EDT | Areal Flood Warning | OKX | Bronx, Kings, Nassau, New York, Queens, Richmond and 1 more | 7 hr |
| Sep 2, 3:50 AM EDT | Rip Current Statement | OKX | Kings, Nassau, Queens, Suffolk | 16 hr |
| Sep 2, 4:38 AM EDT | Areal Flood Advisory | OKX | Nassau, Queens, Suffolk | 3 hr |
| Sep 2, 4:55 AM EDT | Areal Flood Advisory | OKX | Suffolk | 3 hr |
| Sep 2, 5:01 AM EDT | Areal Flood Warning | OKX | Orange, Putnam, Rockland, Westchester | 3 hr |
| Sep 2, 7:49 AM EDT | Areal Flood Advisory | OKX | Orange, Putnam, Rockland, Westchester | 10 hr |
| Sep 2, 10:07 AM EDT | Areal Flood Warning | OKX | Putnam, Rockland, Westchester | 15 hr |
| Sep 2, 10:16 AM EDT | Areal Flood Warning | OKX | Bronx, Nassau, Rockland, Westchester | 25 hr |
| Sep 2, 10:59 AM EDT | Small Craft Advisory | OKX | 19 hr |
Nearby
Flash Flood Warnings in New York, 2021Every flash flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.