Alert archive / New York / Flash Flood Warnings in 2001

Flash Flood Warning 13, NWS New York, NY

June 17, 20014 counties in New York

NWS New York, NY issued this flash flood warning at Jun 17, 2001, 10:45 AM EDT for 4 counties in New York. It was in force for 4 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 17, 2001, 10:45 AM EDT (14:45 UTC)
Expired: Jun 17, 2001, 2:45 PM EDT
In force: 4 hr
Issued by: NWS New York, NY
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Kings County, NY, Nassau County, NY, Queens County, NY, Suffolk County, NY

The radar

The Brookhaven radar (KOKX), 72 km from the middle of the area, began a volume at 14:48 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, 2.8 hours before the alert went out and 72 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: 1061 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 519 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KOKX 171447
FFWOKX
NYC047-059-081-103-171845-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
1045 AM EDT SUN JUN 17 2001

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KINGS COUNTY (BROOKLYN) IN SOUTHEAST NEW YORK
  NASSAU COUNTY IN SOUTHEAST NEW YORK
  QUEENS COUNTY IN SOUTHEAST NEW YORK
  WESTERN SUFFOLK COUNTY IN SOUTHEAST NEW YORK

* UNTIL 245 PM EDT

* AT 1045 AM EDT...WEATHER SERVICE DOPPLER RADAR INDICATED AREAS 
  OF VERY HEAVY RAIN MOVING INTO THE REGION FROM THE SOUTH. PERIODS  
  OF HEAVY RAIN ARE EXPECTED OVER THE NEXT FEW HOURS RESULTING IN 
  WIDESPREAD URBAN...STREET AND SMALL STREAM 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. 

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

LAT...LON 4066 7401 4059 7399 4064 7309 4093 7318
          4077 7390

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 9:30 AM EDT	Flash Flood Warning	OKX	Rockland	4 hr
Jun 17, 12:49 PM EDT	Flash Flood Warning	OKX	Westchester	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.