Alert archive / Rhode Island / Flash Flood Warnings in 2012

Flash Flood Warning 14, NWS Boston/Norton, MA

August 10, 2012Kent County, Providence County, Washington County, Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this flash flood warning at Aug 10, 2012, 4:56 PM EDT for Kent County, Providence County, Washington County, Rhode Island; Capitol Planning Region, Northeastern Connecticut Planning Region, Connecticut. It was in force for 2 hr. 8 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
Aug 10, 2012, 4:56 PM EDT (20:56 UTC)
Expired
Aug 10, 2012, 7:20 PM EDT
In force
2 hr
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Flood severity
None

Counties Capitol Planning Region, CT, Northeastern Connecticut Planning Region, CT, Kent County, RI, Providence County, RI, Washington County, RI

The radar

The Boston radar (KBOX), 81 km from the middle of the area, began a volume at 20:57 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
Aug 10, 5:07 PM EDTFLOODWarwick, RIPOST ROAD FLOODED CARS STUCK
Aug 10, 5:10 PM EDTFLOODStafford Springs, CTROUTE 190 CLOSED DUE TO FLOODING.
Aug 10, 5:17 PM EDTFLOODEast Greenwich, RICAR STUCK IN FLOOD WATERS ON OLD FORT ROAD NEAR THE TRESTLE.
Aug 10, 5:30 PM EDTFLOODCranston, RISEVERAL STREETS FLOODED INCLUDING OAKLAWN AVE AND WILBUR STREET AND FLETCHER AVE
Aug 10, 5:31 PM EDTFLOODProvidence, RIGANO STREET FLOODED OVER CURBS
Aug 10, 5:32 PM EDTFLOODPawtucket, RIFLOODING OVER CURBS ON CENTRAL AVE
Aug 10, 5:44 PM EDTFLOODEast Greenwich, RIRTE 4 NORTH NEAR EXIT 6 LEFT LANE UNDER WATER
Aug 10, 5:54 PM EDTFLOODEast Providence, RIWARREN AVE NEAR I-195 IS CLOSED DUE TO FLOODING. WARREN AVE AND CATAMORE BLD MOVING WATER 1.5 FEET DEEP

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.9 hours before the alert went out and 114 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, Brookhaven, NY at 12:00Z on 2012-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1737 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, Brookhaven, NY at 12:00Z on 2012-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 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
1737 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
539 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

810 
WGUS51 KBOX 102056
FFWBOX
CTC003-013-015-RIC003-007-009-110100-
/O.NEW.KBOX.FF.W.0014.120810T2056Z-120811T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
456 PM EDT FRI AUG 10 2012

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  IN RHODE ISLAND...
  KENT COUNTY...PROVIDENCE COUNTY...WASHINGTON COUNTY... I
  IN CONNECTICUT...
  EASTERN HARTFORD COUNTY...TOLLAND COUNTY...  

* UNTIL 900 PM EDT

* AT 452 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  ONE HOUR RAINFALL RATES OF 1 TO 2 INCHES IN 30 MINUTES FROM A LINE 
  OF THUNDERSTORMS MOVING NORTH ACROSS OVER THE WARNED AREA. ALREADY 
  REPORTS HAVE BEEN RECEIVED OF ROADS BECOMING INUNDATED WITH        
  SEVERAL INCHES OF WATER IN A VERY SHORT PERIOD OF TIME.

FLASH FLOODING OF SMALL STREAMS AND URBAN AREAS IS OCCURRING OR
IMMINENT. THOSE NEAR STREAMS AND CREEKS...OR IN AREAS PRONE TO
FLOODING SHOULD MOVE TO HIGHER GROUND IMMEDIATELY. AVOID FLOODED
ROADS. THE WATER MAY BE TOO DEEP TO ALLOW VEHICLES TO CROSS SAFELY...
OR THE ROADWAY MAY BE UNDERMINED. TURN AROUND...DONT DROWN!

&&

LAT...LON 4130 7189 4142 7180 4164 7181 4166 7217
      4171 7224 4159 7234 4158 7247 4164 7251
      4163 7269 4203 7285 4204 7285 4200 7281
      4204 7276 4202 7138 4178 7132 4167 7137
      4168 7144 4159 7140 4157 7144 4136 7147

$$

SIPPRELL
1 follow-up statement
166 
WGUS71 KBOX 102320
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
720 PM EDT FRI AUG 10 2012

CTC003-013-015-RIC003-007-009-102326-
/O.CAN.KBOX.FF.W.0014.000000T0000Z-120811T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HARTFORD CT-TOLLAND CT-WINDHAM CT-PROVIDENCE RI-WASHINGTON RI-KENT 
RI-
720 PM EDT FRI AUG 10 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR KENT...
WASHINGTON...PROVIDENCE...WINDHAM...TOLLAND AND EASTERN HARTFORD
COUNTIES...

AS OF 715 PM HEAVY RAIN HAD MOVED OUT OF NORTHERN CONNECTICUT AND 
RHODE ISLAND AND THUS THE FLASH FLOOD WARNING HAS BEEN CANCELED.

LAT...LON 4130 7189 4142 7180 4164 7181 4166 7217
      4171 7224 4159 7234 4158 7247 4164 7251
      4163 7269 4203 7285 4204 7285 4200 7281
      4204 7276 4202 7138 4178 7132 4167 7137
      4168 7144 4159 7140 4157 7144 4136 7147

$$
FIELD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 3:10 PM EDTSpecial Weather StatementBOXBristol, Kent, Newport, Washington50 min
Aug 10, 3:36 PM EDTAreal Flood AdvisoryBOXBristol, Kent, Newport, Providence, Washington2 hr
Aug 10, 3:41 PM EDTSevere Thunderstorm WarningBOXWashington19 min
Aug 10, 4:09 PM EDTSevere Thunderstorm WarningBOXNewport, Washington36 min
Aug 10, 4:43 PM EDTSevere Thunderstorm WarningBOXBristol, Kent, Newport, Washington62 min
Aug 10, 4:57 PM EDTFlash Flood WarningBOXKent, Providence, Washington2 hr
Aug 10, 5:16 PM EDTSevere Thunderstorm WarningBOXBristol, Newport59 min
Aug 10, 5:33 PM EDTSevere Thunderstorm WarningBOXBristol, Kent, Providence27 min
Aug 10, 11:52 AM EDTAreal Flood AdvisoryBOXCapitol Planning Region6 hr
Aug 10, 4:00 PM EDTSevere Thunderstorm WarningBOXCapitol Planning Region, Northeastern Connecticut Planning Region45 min
Aug 10, 4:22 PM EDTTornado WarningBOXCapitol Planning Region38 min
Aug 10, 4:45 PM EDTSevere Thunderstorm WarningBOXNortheastern Connecticut Planning Region45 min
Aug 10, 5:00 PM EDTTornado WarningBOXCapitol Planning Region45 min
Aug 10, 5:31 PM EDTSevere Thunderstorm WarningBOXNortheastern Connecticut Planning Region44 min

Nearby

Flash Flood Warnings in Rhode Island, 2012Flash Flood Warnings in Connecticut, 2012Every flash flood warning in 2012

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.