Alert archive / Rhode Island / Flash Flood Warnings in 2013

Flash Flood Warning 47, NWS Boston/Norton, MA

September 1, 2013Kent County, Rhode Island

NWS Boston/Norton, MA issued this flash flood warning at Sep 1, 2013, 7:57 AM EDT for Kent County, Rhode Island. It was in force for 3 hr. 9 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Sep 1, 2013, 7:57 AM EDT (11:57 UTC)
Expired
Sep 1, 2013, 11:00 AM EDT
In force
3 hr
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Flood severity
None

County Kent County, RI

The radar

The Boston radar (KBOX), 41 km from the middle of the area, began a volume at 11:59 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Sep 1, 8:00 AM EDTFLOODCoventry, RIROUTE 117 AT ROUTE 116 UNDER THE RAILROAD TRESTLE IS IMPASSABLE DUE TO FLOODING WITH CARS STUCK IN THE FLOOD WATERS.
Sep 1, 8:16 AM EDTFLOODCoventry, RIROUTE 117 AT ROUTE 116 IMPASSABLE DUE TO FLOODING
Sep 1, 8:24 AM EDTFLOODCoventry, RIAREA NEAR 1070 TIOGUE AVE FLOODED AND IMPASSABLE
Sep 1, 8:24 AM EDTFLOODCoventry, RITIOGUE AVE - FLOODED AND IMPASSABLE
Sep 1, 8:34 AM EDTFLOODCoventry, RIROUTE 117 AT SOUTH MAIN FLOODED WITH A CAR STUCK IN FLOOD WATERS
Sep 1, 8:37 AM EDTFLOODCoventry, RIHOPKINS HILL ROAD AT TIOGUE AVENUE WAS FLOODED WITH 4 CARS STUCK IN FLOOD WATERS.
Sep 1, 8:37 AM EDTFLOODCoventry, RIROUTE 117 WAS IMPASSABLE IN THE AREA OF 1300 MAIN STREET NEAR PAINE MEMORIAL FIELD.
Sep 1, 9:08 AM EDTFLOODCoventry, RILAUREL AVENUE AT WASHINGTON STREET WAS FLOODED AND IMPASSABLE.
Sep 1, 10:53 AM EDTFLOODCoventry, RIHOPKINS HILL RD BTWN S. MAIN AND RT 3...CLOSE DUE TO FLOOD

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Chatham, MA (KCHH), launched 00:00Z, 12.0 hours before the alert went out and 125 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 00:00Z on 2013-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 415 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Chatham, MA at 00:00Z on 2013-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 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
415 J/kg
Mixed-layer CIN
-99 J/kg
Mixed-layer LCL
752 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
19 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.

379 
WGUS51 KBOX 011157
FFWBOX
RIC003-011500-
/O.NEW.KBOX.FF.W.0047.130901T1157Z-130901T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
757 AM EDT SUN SEP 1 2013

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KENT COUNTY IN RHODE ISLAND...

* UNTIL 1100 AM EDT

* AT 756 AM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO AN INCH AND A HALF OF 
  RAIN HAS ALREADY FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN 
  SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WARWICK...COVENTRY...WEST WARWICK...NORTH KINGSTOWN...EAST
  GREENWICH...EXETER...WEST GREENWICH AND STERLING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN VEHICLES. TURN AROUND...DONT DROWN.

A FLASH FLOOD WARNING IS ISSUED FOR RAPID AND POTENTIALLY LIFE
THREATENING FLOODING. IN URBAN AREAS AVOID FLOODED ROADS AND OBEY
ROAD CLOSURES. THOSE NEAR SMALL STREAMS MUST HEAD FOR HIGHER GROUND
IMMEDIATELY.

&&

LAT...LON 4172 7179 4173 7146 4176 7143 4177 7140
      4174 7138 4173 7139 4172 7136 4171 7137
      4167 7138 4169 7141 4169 7145 4166 7144
      4167 7143 4166 7141 4163 7145 4164 7146
      4160 7149 4160 7179

$$

DUNTEN
1 follow-up statement
809 
WGUS71 KBOX 011215
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
815 AM EDT SUN SEP 1 2013

RIC003-011500-
/O.CON.KBOX.FF.W.0047.000000T0000Z-130901T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KENT RI-
815 AM EDT SUN SEP 1 2013

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 AM EDT FOR
KENT COUNTY...

AT 814 AM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY
RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE ALREADY
FALLEN. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

ADDITIONAL RAINFALL AMOUNTS OF AN INCH OR TWO ARE POSSIBLE IN THE 
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN VEHICLES. TURN AROUND...DONT DROWN.

A FLASH FLOOD WARNING IS ISSUED FOR RAPID AND POTENTIALLY LIFE
THREATENING FLOODING. IN URBAN AREAS AVOID FLOODED ROADS AND OBEY
ROAD CLOSURES. THOSE NEAR SMALL STREAMS MUST HEAD FOR HIGHER GROUND
IMMEDIATELY.

&&

LAT...LON 4172 7179 4173 7146 4176 7143 4177 7140
      4174 7138 4173 7139 4172 7136 4171 7137
      4167 7138 4169 7141 4169 7145 4166 7144
      4167 7143 4166 7141 4163 7145 4164 7146
      4160 7149 4160 7179

$$

DUNTEN

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 1, 4:17 AM EDTSpecial Weather StatementBOXBristol43 min
Sep 1, 5:01 AM EDTAreal Flood AdvisoryBOXBristol, Kent, Newport, Washington119 min
Sep 1, 7:48 AM EDTAreal Flood AdvisoryBOXBristol, Kent117 min
Sep 1, 9:30 AM EDTFlash Flood WarningBOXProvidence3 hr
Sep 1, 10:56 AM EDTAreal Flood WarningBOXKent3 hr

Nearby

Flash Flood Warnings in Rhode Island, 2013Every flash flood warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.