Alert archive / Connecticut / Flash Flood Warnings in 1989

Flash Flood Warning 6, NWS Boston/Norton, MA

August 14, 1989Northwest Hills Planning Region, Connecticut

NWS Boston/Norton, MA issued this flash flood warning at Aug 14, 1989, 8:54 PM EDT for Northwest Hills Planning Region, Connecticut. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Aug 14, 1989, 8:54 PM EDT (00:54 UTC)
Expired
Aug 15, 1989, 12:00 AM EDT
In force
3 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, 0.9 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 1989-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 347 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 1989-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.19395878Sfc1 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
347 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
1400 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBDL 150054
FFWBDL
CTC001-005-150400-
 
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE HARTFORD CT
854 PM EDT MON AUG 14 1989
 
THE NATIONAL WEATHER SERVICE IN HARTFORD HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL MIDNIGHT EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN  CONNECTICUT
          ...NORTHERN FAIRFIELD...SOUTHERN LITCHFIELD
 
AT 845 PM EDT THE STEELE BROOK AND TURKEY BROOK WERE OUT OF THEIR
BANKS IN THE OAKVILLE AND WATERTOWN AREAS. THUNDERSHOWERS DURING THE
PASTCOUPLE OF HOUR HAVE PRODUCED RAINFALL AMOUNTS OF 2 TO 4 INCHES.
OTHER SMALL RIVERS AND STEAMS MAY START TO FLOOD OVER SOUTHERN
LITCHFIELD COUNTY AND NORTHERN FAIRFIELD COUNT NEAR WATERBURY AS MORE
SHOWERS AND THUNDERSTORMS PASS THOUGH THAT AREA DURING THE NEXT FEW
HOURS. ALSO DURING THE NEXT FEA BAND OF SHOWERS AND THUNDER STORMS
EXTENDING FROM HARTFORD TO NEW YORK CITY
 
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.  MOVE TO HIGHER GROUND.

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

Special weather statement, Aug 14, 5:05 PM EDT, 3 hours 49 minutes before
SPECIAL WEATHER STATEMENT FOR NORTH CENTRAL MASSACHUSETTS
NATIONAL WEATHER SERVICE WORCESTER MA
505 PM EDT MON AUG 14 1989

AT 5PM RADAR SHOWED TWO HEAVY THUNDERSTORMS IN NORTHERN FRANKLIN
COUNTY OF MASSACHUSETTS..ONE ABOUT 5 MILES NORTH OF GREENFIELD
AND THE OTHER NEAR NORTH ORANGE. THE THUNDERSTORMS WERE DRIFITING
SLOWLY TOWARD THE EAST.

HEAVY RAIN AND FREQUENT LIGHTENING HAS BEEN REPORTED WITH THESE
STORMS AND THEY MAY ALSO BE ACCOMPANIED BY tSMALL HAIL AND GUSTY
WINDS. THE THUNDERSTORMS SHOULD DISSAPATE DURING THE NEXT HOUR.
KEHIR

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.