Alert archive / Connecticut / Flash Flood Warnings in 1998

Flash Flood Warning 49, NWS Boston/Norton, MA

June 18, 1998Northeastern Connecticut Planning Region, Connecticut; Hampden County, Massachusetts

NWS Boston/Norton, MA issued this flash flood warning at Jun 18, 1998, 7:01 PM EDT for Northeastern Connecticut Planning Region, Connecticut; Hampden County, Massachusetts. It was in force for 3 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 18, 1998, 7:01 PM EDT (23:01 UTC)
Expired
Jun 18, 1998, 10:00 PM EDT
In force
3 hr
Issued by
NWS Boston/Norton, MA
Area
Whole counties

Counties Northeastern Connecticut Planning Region, CT, Hampden County, MA

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.0 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, Brookhaven, NY at 12:00Z on 1998-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 106 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 12:00Z on 1998-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
106 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
889 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
82 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 KBOS 182301
FFWBOS
CTC013-015-MAC013-190200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
701 PM EDT THU JUN 18 1998

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL AND SOUTHEASTERN HAMPDEN COUNTY IN WESTERN
  MASSACHUSETTS
  TOLLAND COUNTY IN NORTHEASTERN CONNECTICUT
  WESTERN WINDHAM COUNTY IN NORTHEASTERN CONNECTICUT

* UNTIL 1000 PM EDT

* AT 650 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A THUNDERSTORM WITH VERY HEAVY IN RAIN EASTERN HAMPDEN - TOLLAND
  AND WESTERN WINDHAM COUNTIES MOVING SLOWLY SOUTHEAST NEAR 10
  MPH.

* MONSON TO HOLLAND SOUTHWARD THROUGH STAFFORD - TOLLAND - MANSFIELD
  - EASTFORD AND WOODSTOCK.

* RAINFALL OF 2 TO 3 INCHES IN AN HOUR OR TWO WILL CAUSE FLOODING OF
  SMALL STREAMS AND CREEKS.  ROAD WASHOUTS MAY ALSO OCCUR.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT IS
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO RIVERS AND STREAM.
EVEN THE SMALLEST STREAMS CAN BECOME KILLERS IN TORRENTIAL RAINS.

OSIENSKY/VALLEE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 4:36 PM EDTFlash Flood WarningBOXNorfolk, Suffolk3 hr
Jun 18, 4:36 PM EDTFlash Flood WarningBOXPlymouth3 hr

Nearby

Flash Flood Warnings in Connecticut, 1998Flash Flood Warnings in Massachusetts, 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.