Alert archive / Rhode Island / Flash Flood Warnings in 2015

Flash Flood Warning 7, NWS Boston/Norton, MA

July 15, 2015Bristol County, Rhode Island

NWS Boston/Norton, MA issued this flash flood warning at Jul 15, 2015, 5:49 PM EDT for Bristol County, Rhode Island. It was in force for 116 min. 5 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
Jul 15, 2015, 5:49 PM EDT (21:49 UTC)
Expired
Jul 15, 2015, 7:45 PM EDT
In force
116 min
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Flood severity
None

County Bristol County, RI

The radar

The Boston radar (KBOX), 30 km from the middle of the area, began a volume at 21:49 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
Jul 15, 5:59 PM EDTFLOODWarren, RIFRANKLIN STREET FLOODED. WATER DEPTH AS HIGH AS A FIRE HYDRANT ON THE STREET.
Jul 15, 6:03 PM EDTFLOODWarren, RIVERNON STREET FLOODED AND IMPASSABLE.
Jul 15, 6:35 PM EDTFLOODBristol, RISEVERAL STREETS FLOODED INCLUDING GOODING AVE... CHESTNUT ST... TUPELO ST... AND BROOK FARM DRIVE. THAMES ST AT FRANKLIN ST IMPASSABLE DUE TO UP TO A FOOT OF WATER.
Jul 15, 6:55 PM EDTFLOODBristol, RIFLOODING ACROSS THE ENTIRE ROAD AT INDEPENDENCE PARK IN THE BRISTOL HARBOR AREA.
Jul 15, 7:40 PM EDTFLOODWarren, RIOYSTER POINT AREA FLOODED AND IMPASSABLE. MAIN ST AT DYER ST...AND WASHINGTON ST FLOODED AND IMPASSABLE.

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 12:00Z, 9.8 hours before the alert went out and 108 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 2015-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 27 joules per kilogram.LCLLFCEL10008507005003002001001 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 2015-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
27 J/kg
Mixed-layer CIN
-143 J/kg
Mixed-layer LCL
712 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
51 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.

155 
WGUS51 KBOX 152149
FFWBOX
RIC001-152345-
/O.NEW.KBOX.FF.W.0007.150715T2149Z-150715T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
549 PM EDT WED JUL 15 2015

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

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

* UNTIL 745 PM EDT

* AT 548 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA.  RAINFALL RATES OF ONE TO TWO 
  INCHES PER HOUR ARE EXPECTED. FLASH FLOODING IS EXPECTED TO BEGIN 
  SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BRISTOL...BARRINGTON...AND WARREN. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

RAPID AND POTENTIALLY LIFE THREATENING FLOODING OF STREETS AND
UNDERPASSES IS IMMINENT. DO NOT DRIVE THROUGH FLOODED ROADS AND FIND
ALTERNATE ROUTES.

&&

LAT...LON 4171 7129 4172 7133 4174 7133 4174 7129
      4173 7129 4174 7128 4175 7125 4171 7122
      4171 7124 4173 7126 4172 7126 4168 7123
      4165 7126 4165 7127 4168 7128 4165 7130

$$

KJC
3 follow-up statements
227 
WGUS71 KBOX 152229
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
629 PM EDT WED JUL 15 2015

RIC001-152345-
/O.CON.KBOX.FF.W.0007.000000T0000Z-150715T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BRISTOL RI-
629 PM EDT WED JUL 15 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM EDT FOR
BRISTOL COUNTY...

AT 626 PM EDT...DOPPLER RADAR INDICATED ANOTHER ROUND OF HEAVY 
RAINFALL FROM SHOWERS AND THUNDERSTORMS MOVING SOUTH INTO 
BARRINGTON...WARREN AND BRISTOL. UP TO THREE INCHES OF RAIN HAS 
ALREADY FALLEN. AN ADDITIONAL INCH OF RAIN IS POSSIBLE BEFORE THE 
STORMS MOVE OUT AROUND 730 PM. FLASH FLOODING IS LIKELY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

RAPID AND POTENTIALLY LIFE THREATENING FLOODING OF STREETS AND
UNDERPASSES IS IMMINENT. DO NOT DRIVE THROUGH FLOODED ROADS AND FIND
ALTERNATE ROUTES.

&&

LAT...LON 4171 7129 4172 7133 4174 7133 4174 7129
      4173 7129 4174 7128 4175 7125 4171 7122
      4171 7124 4173 7126 4172 7126 4168 7123
      4165 7126 4165 7127 4168 7128 4165 7130

$$

KJC
325 
WGUS71 KBOX 152312
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
712 PM EDT WED JUL 15 2015

RIC001-152345-
/O.CON.KBOX.FF.W.0007.000000T0000Z-150715T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BRISTOL RI-
712 PM EDT WED JUL 15 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM EDT FOR
BRISTOL COUNTY...

AT 709 PM EDT...RAINFALL WAS BEGINNING TO TAPER OFF ACROSS BRISTOL 
COUNTY RHODE ISLAND. JUST OVER 3 INCHES OF RAIN WAS REPORTED IN 
WARREN OVER A 90 MINUTE PERIOD. SEVERAL STREETS IN WARREN AND 
BRISTOL WERE FLOODED AND IMPASSABLE.

ALTHOUGH RAIN WILL END BY 730 PM...IT WILL TAKE AWHILE LONGER FOR 
FLOODING TO SUBSIDE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

OBEY POSTED ROAD CLOSURES AND AVOID FLOODED ROADS. USE ALTERNATE 
ROUTES.

&&

LAT...LON 4171 7129 4172 7133 4174 7133 4174 7129
      4173 7129 4174 7128 4175 7125 4171 7122
      4171 7124 4173 7126 4172 7126 4168 7123
      4165 7126 4165 7127 4168 7128 4165 7130

$$

JWD
568 
WGUS71 KBOX 152340
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
740 PM EDT WED JUL 15 2015

RIC001-152348-
/O.EXP.KBOX.FF.W.0007.000000T0000Z-150715T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BRISTOL RI-
740 PM EDT WED JUL 15 2015

...THE FLASH FLOOD WARNING FOR BRISTOL COUNTY WILL EXPIRE AT 745 PM
EDT...

AT 738 PM...HEAVY RAIN HAS ENDED IN BRISTOL COUNTY RHODE ISLAND... 
THOUGH SHOWERS WILL LINGER UNTIL AROUND 9 PM. NO ADDITIONAL FLOODING 
IS EXPECTED...SO THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE 
AT 745 PM.

CONTINUE TO OBEY ANY ROAD CLOSURES AND AVOID FLOODED ROADS.

&&

LAT...LON 4171 7129 4172 7133 4174 7133 4174 7129
      4173 7129 4174 7128 4175 7125 4171 7122
      4171 7124 4173 7126 4172 7126 4168 7123
      4165 7126 4165 7127 4168 7128 4165 7130

$$

JWD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 11:41 AM EDTFlash Flood WatchBOXBristol, Kent, Newport, Providence, Washington9 hr
Jul 15, 5:16 PM EDTSpecial Weather StatementBOXKent44 min
Jul 15, 5:42 PM EDTSpecial Weather StatementBOXBristol63 min
Jul 15, 6:24 PM EDTSpecial Weather StatementBOXNewport66 min

Nearby

Flash Flood Warnings in Rhode Island, 2015Every flash flood warning in 2015

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.