Alert archive / Vermont / Flash Flood Warnings in 1994

Flash Flood Warning 3, NWS Burlington, VT

April 17, 1994Caledonia County, Vermont

NWS Burlington, VT issued this flash flood warning at Apr 17, 1994, 4:45 AM EDT for Caledonia County, Vermont. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Apr 17, 1994, 4:45 AM EDT (08:45 UTC)
Expired
Apr 17, 1994, 2:00 PM EDT
In force
9 hr
Issued by
NWS Burlington, VT
Area
Whole counties

County Caledonia County, VT

The nearest sounding before it

Gray, ME (KGYX), launched 00:00Z, 8.8 hours before the alert went out and 160 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, Gray, ME at 00:00Z on 1994-04-17Temperature 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, Gray, ME at 00:00Z on 1994-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -174 square meters per square second.1939587897117Sfc1 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
941 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
-174 m²/s²
0-3 km storm-relative helicity
-32 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 170850
FFWBTV
VTC005-171800-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
445 AM EDT SUN APR 17 1994
 
THE NATIONAL WEATHER SERVICE IN BURLINGTON VT HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  200 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST VERMONT
 
   ...CALEDONIA COUNTY
 
THE FLOOD WARNING FOR CALEDONIA COUNTY HAS BEEN EXTENDED UNTIL 2 PM.
AT 445 AM...THE PASSUMPSIC RIVER WAS STILL ALMOST 2 FEET ABOVE
FLOOD STAGE.  THE RIVER WAS AT ITS CREST AND WILL RETURN TO ITS BANKS
THIS AFTERNOON.  FLOODING ALONG ROUTE 122 IN LYNDONVILLE AND ROUTE 5
IN ST. JOHNSBURY WILL BEGIN TO RECEDE.
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COV"ERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.
 
SISSON

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 17, 3:56 AM EDTFlash Flood WarningBTVRutland10 hr
Apr 17, 6:01 AM EDTFlash Flood WarningBTVChittenden, Franklin, Lamoille8 hr
Apr 17, 6:01 AM EDTFlash Flood WarningBTVOrleans8 hr

Nearby

Flash Flood Warnings in Vermont, 1994Every flash flood warning in 1994

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.