Alert archive / Connecticut / Flash Flood Warnings in 1989

Flash Flood Warning 2, NWS Boston/Norton, MA

May 17, 1989Northwest Hills Planning Region, Connecticut

NWS Boston/Norton, MA issued this flash flood warning at May 17, 1989, 1:24 AM EDT for Northwest Hills Planning Region, Connecticut. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
May 17, 1989, 1:24 AM EDT (05:24 UTC)
Expired
May 17, 1989, 5:30 AM EDT
In force
4 hr
Issued by
NWS Boston/Norton, MA
Area
Whole counties

County Northwest Hills Planning Region, CT

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 00:00Z, 5.4 hours before the alert went out and 106 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 1989-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1989-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1261 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
156 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 KBDL 170526
FFWBDL
CTC005-170930-
 
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE HARTFORD CT
124 AM EDT WED MAY 17 1989
 
THE NATIONAL WEATHER SERVICE IN HARTFORD HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL  530 AM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN  CONNECTICUT
          ...LITCHFIELD
 
 
 
 
 
STAY TUNED TO RADIO OR TELEVISION STATIONS IN THE AREA FOR
INFORMATION ON DEVELOPING WEATHER AND FLOOD CONDITIONS.  IF
YOU ARE OUT OF RANGE OF BROADCAST INFORMATION, BE SURE TO WATCH
FOR, INCREASED SPEED OF RIVER FLOW AND STEADY OR RAPID RISE IN
RIVER LEVEL.  BE PREPARED TO MOVE TO SAFETY.
 
DURING ANY FLOOD EMERGENCY, STAY TUNED TO YOUR NOAA WEATHER RADIO,
COMMERCIAL RADIO, OR TELEVISION STATION.  INFORMATION FROM NOAA AND
CIVIL EMERGENCY FORCES MAY SAVES YOUR LIFE.

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 16, 9:23 PM EDTFlash Flood WarningBOXNorthwest Hills Planning Region4 hr
May 17, 5:30 AM EDTFlash Flood WarningBOXNorthwest Hills Planning Region4 hr

Nearby

Flash Flood Warnings in Connecticut, 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.