Alert archive / New York / Flash Flood Warnings in 2016
Flash Flood Warning 11, NWS New York, NY
NWS New York, NY issued this flash flood warning at Aug 20, 2016, 12:30 PM EDT for Suffolk County, New York. It was in force for 3 hr. 8 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
- Aug 20, 2016, 12:30 PM EDT (16:30 UTC)
- Expired
- Aug 20, 2016, 3:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- None
County Suffolk County, NY
The radar
The Brookhaven radar (KOKX), 34 km from the middle of the area, began a volume at 16:34 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 |
|---|---|---|---|
| Aug 20, 12:30 PM EDT | FLASH FLOOD | Huntington Station, NY | ROUTE 110 FLOODED BOTH DIRECTIONS WITH ALL LANES CLOSED AT RAILROAD STREET AND BROADWAY |
| Aug 20, 12:52 PM EDT | FLASH FLOOD | East Northport, NY | CAR STUCK IN FLOOD WATERS ON TOWNLINE ROAD AND OLD NORTHPORT ROAD |
| Aug 20, 1:09 PM EDT | FLASH FLOOD | Huntington, NY | ROUTE 25A FLOODED AND IMPASSABLE FROM PRIME AVENUE TO SABBATH DAY PATH WITH CARS STUCK IN FLOOD WATERS |
| Aug 20, 1:19 PM EDT | FLASH FLOOD | Commack, NY | BURR ROAD FLOODED AND IMPASSABLE WITH MULTIPLE CARS STUCK IN FLOOD WATERS |
| Aug 20, 1:22 PM EDT | FLASH FLOOD | Commack, NY | OLD NORTHPORT ROAD EAST OF INDIAN HEAD ROAD CLOSED DUE TO FLOODING |
| Aug 20, 1:38 PM EDT | FLASH FLOOD | Huntington, NY | CREEK ROAD IS FLOODED AND IMPASSABLE |
| Aug 20, 1:40 PM EDT | FLASH FLOOD | Huntington, NY | MADISON STREET BY NEW YORK AVENUE CLOSED DUE TO FLOODING |
| Aug 20, 1:40 PM EDT | FLASH FLOOD | Huntington Station, NY | WEST 11TH STREET FROM 6TH AVENUE TO RAILROAD STREET CLOSED DUE TO FLOODING |
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 12:00Z, 4.5 hours before the alert went out and 34 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
- 957 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 652 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
785
WGUS51 KOKX 201630
FFWOKX
NYC103-201930-
/O.NEW.KOKX.FF.W.0011.160820T1630Z-160820T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
1230 PM EDT SAT AUG 20 2016
THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WEST CENTRAL SUFFOLK COUNTY IN SOUTHEASTERN NEW YORK...
* UNTIL 330 PM EDT
* AT 1229 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF RAIN HAVE
ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HUNTINGTON...COMMACK...STONY BROOK...CENTEREACH...HAUPPAUGE...
SMITHTOWN...CENTERPORT...COLD SPRING HARBOR...FARMINGVILLE...
LAKE GROVE...NISSEQUOGUE...HUNTINGTON BAY...OLD FIELD...
ASHAROKEN...ST. JAMES AND EAST NORTHPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.
&&
LAT...LON 4083 7345 4089 7347 4094 7333 4093 7331
4094 7329 4092 7322 4094 7316 4097 7317
4098 7312 4085 7300 4082 7319
$$
242 follow-up statements
268
WGUS71 KOKX 201736
FFSOKX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
136 PM EDT SAT AUG 20 2016
NYC103-201930-
/O.CON.KOKX.FF.W.0011.000000T0000Z-160820T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUFFOLK NY-
136 PM EDT SAT AUG 20 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM EDT FOR
WEST CENTRAL SUFFOLK COUNTY...
AT 132 PM EDT...SHOWERS ARE WEAKENING ACROSS THE WARNED AREA.
HOWEVER...FLASH FLOODING IS LIKELY STILL OCCURING. DOPPLER RADAR IS
INDICATING ESTIMATES OF BETWEEN 2 AND 5 INCHES OVER THE PAST 3
HOURS...MUCH OF WHICH FELL WITHIN 1 1/2 HOURS.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HUNTINGTON...NORTHPORT...HUNTINGTON STATION...COMMACK...
STONY BROOK...CENTEREACH...HAUPPAUGE...SMITHTOWN...CENTERPORT...
COLD SPRING HARBOR...FARMINGVILLE...LAKE GROVE...NISSEQUOGUE...
HEAD OF THE HARBOR...HUNTINGTON BAY...OLD FIELD...ASHAROKEN...
ST. JAMES...JERICHO TURNPIKE AND EAST NORTHPORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.
&&
LAT...LON 4083 7345 4089 7347 4094 7333 4093 7331
4094 7329 4092 7322 4094 7316 4097 7317
4098 7312 4085 7300 4082 7319
$$
24869
WGUS71 KOKX 201843
FFSOKX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
243 PM EDT SAT AUG 20 2016
NYC103-201852-
/O.CAN.KOKX.FF.W.0011.000000T0000Z-160820T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUFFOLK NY-
243 PM EDT SAT AUG 20 2016
...THE FLASH FLOOD WARNING FOR WEST CENTRAL SUFFOLK COUNTY IS
CANCELLED...
THE HEAVY RAIN HAS ENDED AND ADDITIONAL FLOODING IS NO LONGER
EXPECTED. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.
LAT...LON 4083 7345 4089 7347 4094 7333 4093 7331
4094 7329 4092 7322 4094 7316 4097 7317
4098 7312 4085 7300 4082 7319
$$
24The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 10:13 AM EDT | Special Weather Statement | OKX | Suffolk | 47 min |
| Aug 20, 10:23 AM EDT | Special Weather Statement | OKX | Suffolk | 37 min |
| Aug 20, 11:36 AM EDT | Areal Flood Advisory | OKX | Suffolk | 114 min |
| Aug 20, 11:54 AM EDT | Areal Flood Advisory | OKX | Suffolk | 2 hr |
| Aug 20, 12:22 PM EDT | Flash Flood Warning | OKX | Suffolk | 3 hr |
| Aug 20, 12:52 PM EDT | Areal Flood Advisory | OKX | Nassau | 113 min |
Nearby
Flash Flood Warnings in New York, 2016Every flash flood warning in 2016
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.