Alert archive / New York / Flash Flood Warnings in 2001

Flash Flood Warning 10, NWS New York, NY

June 2, 2001Rockland County, New York

NWS New York, NY issued this flash flood warning at Jun 2, 2001, 12:30 PM EDT for Rockland County, New York. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jun 2, 2001, 12:30 PM EDT (16:30 UTC)
Expired: Jun 2, 2001, 3:00 PM EDT
In force: 3 hr
Issued by: NWS New York, NY
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Rockland County, NY

The radar

The Brookhaven radar (KOKX), 108 km from the middle of the area, began a volume at 16:33 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, 4.5 hours before the alert went out and 108 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 440 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS51 KOKX 021630
FFWOKX
NYC087-021900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
1230 PM EDT SAT JUN 2 2001

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  ROCKLAND COUNTY IN SOUTHEAST NEW YORK
  THIS INCLUDES THE CITIES OF...HAVERSTRAW...NEW CITY...NYACK

* UNTIL 300 PM EDT

* AT 1215 PM EDT...THE MAHWAH RIVER AT SUFFERN WAS AT 4.5 FEET AND
  FLOOD STAGE IS 4 FEET. THE MAHWAH WAS RESPONDING TO RUNOFF FROM   
  THE EARLIER HEAVY RAINS. WATER LEVELS WILL GRADUALLY DECREASE AS
  THE AFTERNOON PROGRESSES. 

  IN ADDITION...ANY OTHER SMALL STREAMS AND CREEKS WHICH ARE OUT 
  OF THEIR BANKS EARLIER TODAY WILL CONTINUE TO HAVE WATERS RECEDE.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.  
MOTORISTS DRIVING NEAR RIVERS...STREAMS AND CREEKS SHOULD STAY ALERT 
FOR POSSIBLE FLOODING. 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. VEHICLES CAUGHT IN RISING WATER 
SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. ALSO...DO NOT 
ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH 
BY FOOT. 

TO REPORT ANY FLOODING HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY 
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN UPTON 
NY.

LAT...LON 4114 7420 4113 7415 4105 7391 4130 7401
O

The office that day

Everything else NWS New York, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 2, 6:30 AM EDT	Flash Flood Warning	OKX	Rockland	3 hr
Jun 2, 9:30 AM EDT	Flash Flood Warning	OKX	Rockland	3 hr

Nearby

Flash Flood Warnings in New York, 2001 Every flash flood warning in 2001

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.