Alert archive / New York / Flash Flood Warnings in 2021
Flash Flood Warning 5, NWS New York, NY
NWS New York, NY issued this flash flood warning at Jun 8, 2021, 4:31 PM EDT for Nassau County, Queens County, New York. It was in force for 56 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
- Jun 8, 2021, 4:31 PM EDT (20:31 UTC)
- Expired
- Jun 8, 2021, 5:27 PM EDT
- In force
- 56 min
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Nassau County, NY, Queens County, NY
The radar
The Brookhaven radar (KOKX), 61 km from the middle of the area, began a volume at 20:31 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, 8.5 hours before the alert went out and 61 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
- 740 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
513
WGUS51 KOKX 082031
FFWOKX
NYC059-081-082330-
/O.NEW.KOKX.FF.W.0005.210608T2031Z-210608T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Upton NY
431 PM EDT Tue Jun 8 2021
The National Weather Service in Upton has issued a
* Flash Flood Warning for...
Nassau County in southeastern New York...
Queens County in southeastern New York...
* Until 730 PM EDT.
* At 431 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain approaching the warned area. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Levittown, Freeport, Valley Stream, Long Beach, Glen Cove,
Plainview, Garden City, Massapequa, Lynbrook, Syosset, Mineola,
Woodmere, Westbury, Great Neck, Farmingdale, Oyster Bay, Jones
Beach, Hempstead, Hicksville and Elmont.
Additional rainfall amounts of 1 to 2.50 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
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 4057 7378 4069 7373 4084 7377 4088 7370
4086 7366 4090 7365 4092 7361 4092 7350
4089 7347 4065 7342 4065 7341 4063 7341
4061 7341 4061 7340 4061 7342 4060 7341
4058 7352
FLASH FLOOD...RADAR INDICATED
$$
JC1 follow-up statement
426
WGUS71 KOKX 082127
FFSOKX
Flash Flood Statement
National Weather Service Upton NY
527 PM EDT Tue Jun 8 2021
NYC059-081-082137-
/O.CAN.KOKX.FF.W.0005.000000T0000Z-210608T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Nassau NY-Queens NY-
527 PM EDT Tue Jun 8 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NASSAU AND QUEENS COUNTIES...
The storm has quickly weakened and heavy rain has ended. Flooding is
no longer expected to pose a threat. Please continue to heed
remaining road closures.
LAT...LON 4057 7378 4069 7373 4084 7377 4088 7370
4086 7366 4090 7365 4092 7361 4092 7350
4089 7347 4065 7342 4065 7341 4063 7341
4061 7341 4061 7340 4061 7342 4060 7341
4058 7352
$$
JCThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 12:04 AM EDT | Marine Dense Fog Advisory | OKX | 9 hr | |
| Jun 8, 12:24 PM EDT | Areal Flood Advisory | OKX | Orange | 3 hr |
| Jun 8, 12:49 PM EDT | Special Weather Statement | OKX | Orange | 41 min |
| Jun 8, 1:07 PM EDT | Flash Flood Warning | OKX | Orange | 3 hr |
| Jun 8, 1:28 PM EDT | Severe Thunderstorm Warning | OKX | Orange | 62 min |
| Jun 8, 2:02 PM EDT | Areal Flood Advisory | OKX | Orange | 118 min |
| Jun 8, 2:07 PM EDT | Severe Thunderstorm Warning | OKX | Putnam, Westchester | 38 min |
| Jun 8, 2:26 PM EDT | Special Weather Statement | OKX | Putnam, Rockland, Westchester | 49 min |
| Jun 8, 2:40 PM EDT | Severe Thunderstorm Warning | OKX | Rockland, Westchester | 35 min |
| Jun 8, 3:06 PM EDT | Areal Flood Advisory | OKX | Rockland, Westchester | 114 min |
| Jun 8, 3:10 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Rockland, Westchester | 50 min |
| Jun 8, 3:28 PM EDT | Special Marine Warning | OKX | 62 min | |
| Jun 8, 3:29 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Kings, New York, Queens, Richmond | 46 min |
| Jun 8, 3:30 PM EDT | Flash Flood Warning | OKX | Rockland, Westchester | 3 hr |
| Jun 8, 3:49 PM EDT | Flash Flood Warning | OKX | Bronx, Kings, New York, Queens, Richmond | 2 hr |
| Jun 8, 4:10 PM EDT | Special Marine Warning | OKX | 43 min | |
| Jun 8, 4:15 PM EDT | Severe Thunderstorm Warning | OKX | Bronx, Kings, Nassau, New York, Queens, Richmond | 43 min |
| Jun 8, 4:30 PM EDT | Special Marine Warning | OKX | 45 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.