Alert archive / Vermont / Flash Flood Warnings in 1990

Flash Flood Warning 25, NWS Burlington, VT

March 18, 1990Caledonia County, Vermont

NWS Burlington, VT issued this flash flood warning at Mar 18, 1990, 5:00 AM EST for Caledonia County, Vermont. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Mar 18, 1990, 5:00 AM EST (10:00 UTC)
Expired
Mar 18, 1990, 10:00 AM EST
In force
5 hr
Issued by
NWS Burlington, VT
Area
Whole counties

County Caledonia 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

Gray, ME (KGYX), launched 00:00Z, 10.0 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 1990-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 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 1990-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 244 square meters per square second.1939587897Sfc1 km3 km6 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
3579 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
244 m²/s²
0-3 km storm-relative helicity
270 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 181018 COR
FFWBTV
VTC003-005-181500-

FLOOD WARNING...CORRECTION FOR CALEDONIA COUNTY...
NATIONAL WEATHER SERVICE BURLINGTON VT
500 AM EST SUN MAR 18 1990

THE NATIONAL WEATHER SERVICE IN BURLINGTON VT HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 1000 AM EST
FOR PEOPLE IN THE FOLLOWING COUNTIES...

IN SOUTHWEST VERMONT
          ...BENNINGTON
IN NORTHEAST VERMONT
          ...CALEDONIA

FLOODING CONTIUNED EARLY THIS MORNING IN CALEDONIA AND BENNINGTON
COUNTIES AND WARNINGS HAVE BEEN EXTENDED UNTIL 1000 AM.

IN CALEDONIA COUNTY THE WATER FROM THE MOOSE...PASSUMPSIC AND MILLERS
RUN WAS CAUSING PROBLEMS ON ROUTES 122 NEAR THE COVERED BRIDGE IN
LYNDONVILLE...ROUTE 5 IN ST JOHNSBURY CENTER AND ON ROUTE 2 IN EAST ST
JOHNSBURY. ALL THREE OF THESE STREAMS SHOULD RECEEDE THIS MORNING AS
RUNOFF SLOWS.

IN BENNINGTON COUNTY THE BATTEN KILL RIVER WAS OVER IT/S BANKS ON
ROUTE 313 IN WEST ARLINGTON. THE WALLOOMSAC WAS ALSO RUNNING VERY HIGH
AND WAS CLOSE TO THE HIGHWAYS IN AREAS AROUND BENNINGTON.


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.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 17, 10:11 PM ESTFlash Flood WarningBTVBennington7 hr
Mar 18, 2:34 AM ESTFlash Flood WarningBTVCaledonia6 hr
Mar 18, 5:00 AM ESTFlash Flood WarningBTVBennington5 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.