Alert archive / New York / Flash Flood Warnings in 1998

Flash Flood Warning 12, NWS New York, NY

June 12, 1998Nassau County, Suffolk County, New York

NWS New York, NY issued this flash flood warning at Jun 12, 1998, 11:44 PM EDT for Nassau County, Suffolk County, New York. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 12, 1998, 11:44 PM EDT (03:44 UTC)
Expired
Jun 13, 1998, 1:45 AM EDT
In force
2 hr
Issued by
NWS New York, NY
Area
Whole counties

Counties Nassau County, NY, Suffolk County, NY

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 3.7 hours before the alert went out and 23 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-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 1998-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 1998-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 213 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
4 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
445 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
213 m²/s²
0-3 km storm-relative helicity
568 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 
TTAA00 KNYC 130341
FFWNYC
NYC059-103-130545-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
1144 PM EDT FRI JUN 12 1998

THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NASSAU COUNTY IN SOUTHEASTERN NEW YORK
  SUFFOLK COUNTY IN SOUTHEASTERN NEW YORK

* UNTIL 145 AM EDT

* AT 1130 PM...SPOTTERS AND NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED A THUNDERSTORM WITH VERY HEAVY RAIN SOUTHERN NASSAU
COUNTY INTO SOUTHWEST SUFFOLK COUNTY... MOVING EASTNORTHEAST AT
15 TO 20 MPH.

* DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

  TRM


&

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 11:33 AM EDTFlash Flood WarningOKXKings, Queens117 min
Jun 13, 11:33 AM EDTFlash Flood WarningOKXBronx, New York117 min
Jun 13, 11:33 AM EDTFlash Flood WarningOKXRichmond117 min
Jun 13, 12:01 PM EDTFlash Flood WarningOKXWestchester119 min
Jun 13, 12:01 PM EDTFlash Flood WarningOKXNassau119 min
Jun 13, 1:01 PM EDTFlash Flood WarningOKXSuffolk119 min
Jun 13, 1:54 PM EDTFlash Flood WarningOKXSuffolk2 hr
Jun 13, 3:59 PM EDTFlash Flood WarningOKXSuffolk2 hr

Nearby

Flash Flood Warnings in New York, 1998Every flash flood warning in 1998

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.