Alert archive / New York / Flash Flood Warnings in 2011
Flash Flood Warning 37, NWS New York, NY
NWS New York, NY issued this flash flood warning at Sep 23, 2011, 3:13 PM EDT for 4 counties in New York; Greater Bridgeport Planning Region, Connecticut. It was in force for 103 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 23, 2011, 3:13 PM EDT (19:13 UTC)
- Expired
- Sep 23, 2011, 4:56 PM EDT
- In force
- 103 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Greater Bridgeport Planning Region, CT, Kings County, NY, Nassau County, NY, Queens County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 79 km from the middle of the area, began a volume at 19:16 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.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.2 hours before the alert went out and 79 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
- 454 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 434 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
230
WGUS51 KOKX 231913
FFWOKX
CTC001-NYC047-059-081-119-232115-
/O.NEW.KOKX.FF.W.0037.110923T1913Z-110923T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
313 PM EDT FRI SEP 23 2011
THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WESTERN NASSAU COUNTY IN SOUTHEAST NEW YORK...
WESTCHESTER COUNTY IN SOUTHEAST NEW YORK...
FAIRFIELD COUNTY IN SOUTHERN CONNECTICUT...
QUEENS COUNTY IN SOUTHEAST NEW YORK...
KINGS (BROOKLYN) COUNTY IN SOUTHEAST NEW YORK...
* UNTIL 515 PM EDT...
* AT 307 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
MODERATE TO HEAVY RAIN MOVING ACROSS THE WARNING AREA. RAINFALL
RATES OF ONE TO ONE AND A HALF INCHES ARE POSSIBLE. OVER TWO INCHES
OF RAINFALL HAVE ALREADY FALLEN ACROSS THESE AREAS AND EXCESSIVE
RUNOFF FROM THIS HEAVY RAINFALL WILL CAUSE FLOODING HIGHWAYS AND
UNDERPASSES AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 4075 7394 4080 7376 4088 7371 4085 7366
4092 7360 4095 7366 4089 7380 4134 7382
4138 7333 4102 7353 4100 7363 4096 7366
4091 7359 4060 7376 4059 7383 4063 7376
4065 7385 4063 7392 4059 7388 4058 7401
$$1 follow-up statement
109
WGUS71 KOKX 232056
FFSOKX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
456 PM EDT FRI SEP 23 2011
CTC001-NYC047-059-081-119-232105-
/O.CAN.KOKX.FF.W.0037.000000T0000Z-110923T2115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KINGS (BROOKLYN) NY-QUEENS NY-FAIRFIELD CT-WESTCHESTER NY-NASSAU NY-
456 PM EDT FRI SEP 23 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR WESTERN NASSAU...
WESTCHESTER...FAIRFIELD...QUEENS AND KINGS (BROOKLYN) COUNTIES...
HEAVY RAIN HAS MOVED OUT OF THE AREA AND THE IMMINENT THREAT FOR
FLASH FLOODING HAS ENDED.
LAT...LON 4075 7394 4080 7376 4088 7371 4085 7366
4092 7360 4095 7366 4089 7380 4134 7382
4138 7333 4102 7353 4100 7363 4096 7366
4091 7359 4060 7376 4059 7383 4063 7376
4065 7385 4063 7392 4059 7388 4058 7401
$$The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 2:36 AM EDT | Marine Dense Fog Advisory | OKX | 8 hr | |
| Sep 23, 2:37 AM EDT | Dense Fog Advisory | OKX | Nassau, Orange, Putnam, Rockland, Suffolk, Westchester | 6 hr |
| Sep 23, 12:09 PM EDT | Areal Flood Advisory | OKX | Bronx, Kings, New York, Queens, Richmond | 111 min |
| Sep 23, 2:04 PM EDT | Areal Flood Advisory | OKX | Bronx, New York, Rockland, Westchester | 86 min |
| Sep 23, 4:05 PM EDT | Flash Flood Warning | OKX | Orange, Putnam, Westchester | 57 min |
| Sep 23, 6:38 PM EDT | Areal Flood Warning | OKX | Orange, Putnam, Rockland | 5 hr |
| Sep 23, 7:38 PM EDT | Areal Flood Advisory | OKX | Bronx, Kings, New York, Putnam, Queens, Richmond and 2 more | 3 hr |
| Sep 23, 3:45 PM EDT | Flash Flood Warning | OKX | Greater Bridgeport Planning Region, Naugatuck Valley Planning Region | 2 hr |
Nearby
Flash Flood Warnings in New York, 2011Flash Flood Warnings in Connecticut, 2011Every flash flood warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.