Alert archive / New York / Flash Flood Warnings in 1989

Flash Flood Warning 10, NWS Albany, NY

October 20, 1989Sullivan County, New York

NWS Albany, NY issued this flash flood warning at Oct 20, 1989, 9:50 AM EDT for Sullivan County, New York. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Oct 20, 1989, 9:50 AM EDT (13:50 UTC)
Expired
Oct 20, 1989, 5:30 PM EDT
In force
8 hr
Issued by
NWS Albany, NY
Area
Whole counties

County Sullivan County, NY

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Albany, NY (KALB), launched 12:00Z, 1.8 hours before the alert went out and 133 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 12:00Z on 1989-10-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 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 12:00Z on 1989-10-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 468 square meters per square second.19395878Sfc1 km3 km6 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
564 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
468 m²/s²
0-3 km storm-relative helicity
756 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Oct 20, 7:43 AM EDT, 2 hours 7 minutes before
NEW YORK STATEWIDE POLICE INFORMATION NETWORK
TROOP F
0745AM EDT FRI OCT 20 1989
FLIB WLSR
01038    FILE 28   PD LIBERTY NY0522000              OCT 22-89
TO         NATIONAL WEATHER SERVICE

STANDARD HYDROLOGIC EXCHANGE FORMAT

DATE OF OBSERVATION: 10/20/89   TIME OF OBSERVATION: 07:00 AM EST

OBSERVATION ID #: LBTN6/   PERCIP: 1.02/
WX: RAIN/   HIGH TEMP: 44 /   LOW TEMP: 37 /   CURRENT TEMP: 43 /

REMARKS:

NEW SNOW:    /   TOTAL SNOW ON GROUND:    /
RIVER:       /
PERCIP YESTERDAY MORNING:     /

AUTH AND SENT PAUL H LEROY        7-43   AM

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 20, 9:50 AM EDTFlash Flood WarningALYUlster6 hr
Oct 20, 12:00 PM EDTFlash Flood WarningALYOrange4 hr
Oct 20, 12:00 PM EDTFlash Flood WarningALYGreene6 hr
Oct 20, 3:51 PM EDTFlash Flood WarningALYColumbia, Dutchess4 hr
Oct 20, 6:00 PM EDTFlash Flood WarningALYColumbia, Dutchess, Greene, Ulster5 hr
Oct 20, 6:00 PM EDTFlash Flood WarningALYOrange, Sullivan5 hr

Nearby

Flash Flood Warnings in New York, 1989Every flash flood warning in 1989

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.