Alert archive / Vermont / Flash Flood Warnings in 1990

Flash Flood Warning 28, NWS Burlington, VT

June 20, 1990Windsor County, Vermont

NWS Burlington, VT issued this flash flood warning at Jun 20, 1990, 7:07 PM EDT for Windsor County, Vermont. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 20, 1990, 7:07 PM EDT (23:07 UTC)
Expired
Jun 20, 1990, 9:15 PM EDT
In force
2 hr
Issued by
NWS Burlington, VT
Area
Whole counties

County Windsor County, VT

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, 11.1 hours before the alert went out and 141 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 1990-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 12:00Z on 1990-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.193958Sfc1 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
573 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
0 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 KBTV 202307
FFWBTV
VTC005-009-027-210115-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
707 PM EDT WED JUN 20 1990
 
THE NATIONAL WEATHER SERVICE IN BURLINGTON VT HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  915 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...S...
 
IN NORTHEAST VERMONT
 
   ...CALEDONIA COUNTY...ESSEX COUNTY
 
IN SOUTHEAST VERMONT
 
   ...EASTERN WINDSOR COUNTY
 
A LINE OF VERY HEAVY RAINSHOWERS EXTENDED FROM CANAAN VERMONT SOUTH TO
SPRINGFIELD AT 700 PM THIS EVENING. SEVERAL REPORTS OF OVER A HALF
INCH OF RAIN IN A HALF HOUR HAVE BEEN RECIEVED FROM THESE STORMS.
SPRINGFIELD VERMONT REPORTED 1.2 INCHES IN 25 MINUTES.
 
THESE STORMS ARE MOVING VERY SLOWLY.
 
IF YOU LIVE NEAR A STREAM WATCH IT CLOSELY FOR THE NEXT COUPLE HOURS.
 
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT.  IT'S
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS.  CAMPERS SHOULD
AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.
 
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A
SMALL ONE...ON FOOT.

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, Jun 20, 6:40 PM EDT, 27 minutes before
VTZ002-003-210100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
630 PM EDT WED JUN 20 1990

HEAVY RAINSHOWERS AND THUNDERSTORMS HAD FORMED IN EASTERN VERMONT LATE
THIS AFTERNOON.

THESE SHOWERS AND THUNDERSTORMS ARE VERY SLOW MOVERS. THIS MEANS THAT
THEY CAN DROP ALOT OF RAIN OF A VERY CONCENTRATED AREA...ONLY A FEW
MILES WIDE CAUSING STREAMS TO RISE RADIPLY FROM THE RUNOFF.

THE LARGEST STORM WAS LACATED NEAR GROTON AND ROUTE 302 AT 625 PM. THIS
STORM HAD SHOWN LITTLE MOVEMENT IN THE PAST HALF HOUR.

THE NEXT LARGEST STORMS WERE LOCATED NEAR RANDOLPH CENTER...EAST BETHEL
AND ROYALTON...CLOSE TO INTERSTATE 89. THESE STORMS WERE ALSO SHOWING
LITTLE OR NO MOVEMENT.

PERSONS LIVING NEAR STREAMS IN THE HEAVY RAIN AREA SHOULD WATCH THE
WATER LEVEL CLOSELY OVER THE NEXT HOURS AND BE PREPARED TO MOVE
TO HIGHER GROUND IF THE NEED ARISES.
ARISES.

END...WSG

The office that day

Everything else NWS Burlington, VT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 20, 7:07 PM EDTFlash Flood WarningBTVCaledonia, Essex2 hr

Nearby

Flash Flood Warnings in Vermont, 1990Every flash flood warning in 1990

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.