Alert archive / Rhode Island / Flash Flood Warnings in 1993

Flash Flood Warning 5, NWS Boston/Norton, MA

April 1, 1993Washington County, Rhode Island

NWS Boston/Norton, MA issued this flash flood warning at Apr 1, 1993, 5:17 PM EST for Washington County, Rhode Island. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Apr 1, 1993, 5:17 PM EST (22:17 UTC)
Expired
Apr 1, 1993, 8:15 PM EST
In force
3 hr
Issued by
NWS Boston/Norton, MA
Area
Whole counties

County Washington County, RI

The nearest sounding before it

Chatham, MA (KCHH), launched 12:00Z, 10.3 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, Chatham, MA at 12:00Z on 1993-04-01Temperature 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, Chatham, MA at 12:00Z on 1993-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 145 square meters per square second.1939587897Sfc1 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
NaN m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
145 m²/s²
0-3 km storm-relative helicity
313 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 KPVD 012217
FFWPVD
RIC009-020115-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PROVIDENCE RI
517 PM EST THU APR 1 1993
 
THE NATIONAL WEATHER SERVICE IN PROVIDENCE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  815 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH RHODE ISLAND
 
   ...WASHINGTON COUNTY
 
AT 515 PM...WEATHER RADAR SHOWED THUNDERSTORMS WITH VERY HEAVY RAIN
MOVING ACROSS EASTERN LONG ISLAND. THESE THUNDERSTORMS WILL MOVE INTO
WASHINGTON COUNTY BY 545 PM. RIVERS AND STREAMS THROUGHOUT WASHINGTON
COUNTY WERE AROUND BANK FULL. THIS AREA OF HEAVY RAIN MAY CAUSE FLASH
FLOODING TO BEGIN QUICKLY. PEOPLE LIVING ALONG THE PAWCATUCK AND WOOD
RIVERS AND ANY OF THEIR SMALLER STREAMS SHOULD BE READY TO HEAD TO HIGH
GROUND IMMEDIATELY.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESC)APE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
 
VALLEE

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, Apr 1, 1:30 PM EST, 3 hours 47 minutes before
MAZ003-009-012100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BOSTON MA
130 PM EST THU APR 01 1993

...POTENTIALLY STRONG THUNDERSTORMS MOVING TOWARDS CAPE COD...MARTHAS
VINEYARD...AND THE BUZZARDS BAY AREA...

WEATHER SERVICE RADAR INDICATED A CLUSTER OF THUNDERSTORMS MOVING
TOWARDS THE BUZZARDS BAY AREA AT 125 PM.  THESE THUNDERSTORMS MAY
PRODUCE STRONG GUSTY WINDS OVER 50 MPH AND TORRENTIAL RAINS AS THEY
MOVE ACROSS THE BUZZARDS BAY COASTLINE AND UPPER CAPE AREA BETWEEN 130
AND 230 PM.

THE STRONGEST THUNDERSTORMS WERE BETWEEN FALL RIVER AND NEW
BEDFORD...AND IN THE VINEYARD SOUND AREA.  THE THUNDERSTORMS WERE
MOVING NORTHEAST ABOUT 35 MPH.  THE COMMUNITIES MOST LIKELY TO BE
AFFECTED INCLUDE NEW BEDFORD...WAREHAM...FALMOUTH...BOURNE...AND
HYANNIS.

DO NOT ATTEMPT TO DRIVE OVER A FLOODED ROAD...AND SEEK PROTECTION IN A
SAFE PLACE IF THESE THUNDERSTORMS PRODUCE HIGH WINDS IN YOUR AREA.

THOMPSON
Special weather statement, Apr 1, 1:31 PM EST, 3 hours 46 minutes before
MAZ003-009-012100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BOSTON MA
130 PM EST THU APR 01 1993

...POTENTIALLY STRONG THUNDERSTORMS MOVING TOWARDS CAPE COD...MARTHAS
VINEYARD...AND THE BUZZARDS BAY AREA...

WEATHER SERVICE RADAR INDICATED A CLUSTER OF THUNDERSTORMS MOVING
TOWARDS THE BUZZARDS BAY AREA AT 125 PM.  THESE THUNDERSTORMS MAY
PRODUCE STRONG GUSTY WINDS OVER 50 MPH AND TORRENTIAL RAINS AS THEY
MOVE ACROSS THE BUZZARDS BAY COASTLINE AND UPPER CAPE AREA BETWEEN 130
AND 230 PM.

THE STRONGEST THUNDERSTORMS WERE BETWEEN FALL RIVER AND NEW
BEDFORD...AND IN THE VINEYARD SOUND AREA.  THE THUNDERSTORMS WERE
MOVING NORTHEAST ABOUT 35 MPH.  THE COMMUNITIES MOST LIKELY TO BEP
AFFECTED INCLUDE NEW BEDFORD...WAREHAM...FALMOUTH...BOURNE...AND
HYANNIS.

DO NOT ATTEMPT TO DRIVE OVER A FLOODED ROAD...AND SEEK PROTECTION IN A
SAFE PLACE IF THESE THUNDERSTORMS PRODUCE HIGH WINDS IN YOUR AREA.

THOMPSON

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 1, 12:24 PM ESTFlash Flood WarningBOXKent, Providence7 hr

Nearby

Flash Flood Warnings in Rhode Island, 1993Every flash flood warning in 1993

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.