Alert archive / New York / Flash Flood Warnings in 2002

Flash Flood Warning 8, NWS Albany, NY

September 4, 2002Greene County, New York

NWS Albany, NY issued this flash flood warning at Sep 4, 2002, 2:21 AM EDT for Greene County, 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 counties it named.

The facts

Issued
Sep 4, 2002, 2:21 AM EDT (06:21 UTC)
Expired
Sep 4, 2002, 6:15 AM EDT
In force
4 hr
Issued by
NWS Albany, NY
Area
Whole counties

County Greene County, NY

The radar

The Albany radar (KENX), 35 km from the middle of the area, began a volume at 06:21 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

Albany, NY (KALY), launched 00:00Z, 6.4 hours before the alert went out and 52 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, Albany, NY at 00:00Z on 2002-09-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1096 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, Albany, NY at 00:00Z on 2002-09-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 square meters per square second.1939Sfc1 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
1096 J/kg
Mixed-layer CIN
-87 J/kg
Mixed-layer LCL
912 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KALY 040621
FFWALY
NYC039-041015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ALBANY NY
220 AM EDT WED SEP 4 2002

THE NATIONAL WEATHER SERVICE IN ALBANY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GREENE COUNTY IN EASTERN NEW YORK

* UNTIL 615 AM EDT

* AT 215 AM EDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN IN GREENE COUNTY.

* LOCATIONS IN THE WARNING INCLUDE...CAIRO...CATSKILL...CLIMAX...    
  COXSACKIE...DURHAM...EAST JEWETT...ELKA PARK...HUNTER...           
  LEEDS...LEXINGTON...ROUND TOP...SURPRISE...TANNERSVILLE...
  WEST KILL AND WINDHAM.

* OVER AN INCH OF RAIN HAS ALREADY FALLEN ACROSS MUCH OF GREENE      
  COUNTY AND THE POSSIBILITY EXISTS THAT ANOTHER 1 TO 3 INCHES OF    
  RAIN WILL FALL ACROSS GREENE COUNTY DURING THE NEXT 2 HOURS. 

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

$$

LAT...LON 4244 7379 4231 7382 4217 7391 4220 7400
          4212 7409 4213 7430 4222 7449 4233 7441
          4236 7426 4243 7408

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 2:04 AM EDTFlash Flood WarningALYSchoharie4 hr

Nearby

Flash Flood Warnings in New York, 2002Every flash flood warning in 2002

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.