Alert archive / Vermont / Flash Flood Warnings in 1990
Flash Flood Warning 36, NWS Burlington, VT
NWS Burlington, VT issued this flash flood warning at Jul 23, 1990, 3:19 PM EDT for Addison County, Vermont. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 23, 1990, 3:19 PM EDT (19:19 UTC)
- Expired
- Jul 23, 1990, 6:15 PM EDT
- In force
- 3 hr
- Issued by
- NWS Burlington, VT
- Area
- Whole counties
County Addison 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, 7.3 hours before the alert went out and 159 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.
- Mixed-layer CAPE
- 340 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 683 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBTV 231920 FFWBTV VTC001-232215- BULLETIN - EBS ACTIVATION REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE BURLINGTON VT 319 PM EDT MON JUL 23 1990 THE NATIONAL WEATHER SERVICE IN BURLINGTON VT HAS ISSUED A FLOOD WARNING EFFECTIVE UNTIL 615 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION...... IN WEST CENTRAL VERMONT ...ADDISON COUNTY THUNDERSTORMS MOVING ACROSS ADDISON COUNTY WILL CONTINUE FOR THE NEXT 2 HOURS WITH VERY HEAVY RAIN. THE MOST SUSCEPTIBLE AREA FOR FLOODING IS THE EAST HALF OF THE COUNTY. THE NEW HAVEN RIVER WILL RISE RAPIDLY FROM MIDDLEBURY EASTWARD. ROADS...ESPECIALLY SECONDARY DIRT ROADS WILL HAVE WASHOUTS. IF YOU ARE ON THE ROAD BE ESPECIALLY CAREFUL. THOSE WHO LIVE ALONG RIVERS OR NEXT TO STEEP MOUNTAIN SLOPES SHOULD BE READY TO TAKE QUICK ACTION IF FLOODING OCCURS. SEEK HIGHER GROUND A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. MOST FLOOD DEATHS 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. TO ESCAPE RISING WATER MOVE TO HIGHER GROUND. HOGAN
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, Jul 23, 1:32 PM EDT, 1 hour 47 minutes before
VTZ001-002-003-NYZ011-231830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 131 PM EDT MON JUL 23 1990 THUNDERSTORM ARE MOVING THROUGH NORTHERN VERMONT. AT 130 PM...THUNDERSTORMS WERE MOVING THROUGH THE CHAMPLAIN VALLEY OF NEW YORK AND VERMONT AND INTO THE NORTHEAST KINGDOM. THE THUNDERSTORMS HAVE BEEN PRODUCING LOCALLY HEAVY RAINFALL AS THEY MOVE THROUGH THE AREA. THE THUNDERSTORMS ARE MOVING NORTHEAST AT 30 MILES AN HOUR. ADDITIONAL THUNDERSTORMS WILL LIKELY MOVE THROUGH NORTHERN VERMONT IN THE NEXT FEHOURS. THESE THUNDERSTORMS WILL LIKELY PRODUCE HEAVY DOWNPOURS AND MAY PRODUCE SOME LOCALIZED STREET FLOODING. IF YOU ARE TRAVELING THIS AFTERNOON...BE PREPARE+D FOR SOME HEAVY RAIN AND WATCH OUT FOR WATER COLLECTING ON ROADWAYS. END...AS
Special weather statement, Jul 23, 1:33 PM EDT, 1 hour 46 minutes before
VTZ001-002-003-NYZ011-231830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 131 PM EDT MON JUL 23 1990 THUNDERSTORM ARE MOVING THROUGH NORTHERN VERMONT. AT 130 PM...THUNDERSTORMS WERE MOVING THROUGH THE CHAMPLAIN VALLEY OF NEW YORK AND VERMONT AND INTO THE NORTHEAST KINGDOM. THE THUNDERSTORMS HAVE BEEN PRODUCING LOCALLY HEAVY RAINFALL AS THEY MOVE THROUGH THE AREA. THE THUNDERSTORMS ARE MOVING NORTHEAST AT 30 MILES AN HOUR. ADDITIONAL THUNDERSTORMS WILL LIKELY MOVE THROUGH NORTHERN VERMONT IN THE NEXT FEW HOURS. THESE THUNDERSTORMS WILL LIKELY PRODUCE HEAVY DOWNPOURS AND MAY PRODUCE SOME LOCALIZED STREET FLOODING. IF YOU ARE TRAVELING THIS AFTERNOON...BE PREPARED F0OR SOME HEAVY RAIN AND WATCH OUT FOR WATER COLLECTING ON ROADWAYS. END...AS
The office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 2:29 PM EDT | Flash Flood Warning | BTV | Chittenden, Lamoille, Washington | 3 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.