Alert archive / Rhode Island / Flash Flood Warnings in 2013

Flash Flood Warning 39, NWS Boston/Norton, MA

July 23, 2013Providence County, Rhode Island; Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this flash flood warning at Jul 23, 2013, 5:45 PM EDT for Providence County, Rhode Island; Northeastern Connecticut Planning Region, Connecticut. It was in force for 90 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 23, 2013, 5:45 PM EDT (21:45 UTC)
Expired: Jul 23, 2013, 7:15 PM EDT
In force: 90 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Flood severity: None

Counties Northeastern Connecticut Planning Region, CT, Providence County, RI

The radar

The Boston radar (KBOX), 55 km from the middle of the area, began a volume at 21:48 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.8 hours before the alert went out and 143 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 871 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 638 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 183 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 6.2

Open this sounding in Storm Lab

The text

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

723 
WGUS51 KBOX 232145
FFWBOX
CTC015-RIC007-232315-
/O.NEW.KBOX.FF.W.0039.130723T2145Z-130723T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
545 PM EDT TUE JUL 23 2013

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  CENTRAL PROVIDENCE COUNTY IN  RHODE ISLAND...

* UNTIL 715 PM EDT

* AT 540 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA.  FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  PUTNAM...GLOCESTER...SMITHFIELD...FOSTER...MILLBURY...
  BURRILLVILLE...KILLINGLY...DANIELSON...THOMPSON...POMFRET AND
  WOODSTOCK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND AS WELL AS
OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 4171 7189 4195 7199 4200 7186 4201 7163
      4186 7153

$$

MD

1 follow-up statement

541 
WGUS71 KBOX 232306
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
706 PM EDT TUE JUL 23 2013

CTC015-RIC007-232316-
/O.EXP.KBOX.FF.W.0039.000000T0000Z-130723T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WINDHAM CT-PROVIDENCE RI-
706 PM EDT TUE JUL 23 2013

...THE FLASH FLOOD WARNING FOR EASTERN WINDHAM AND PROVIDENCE
COUNTIES WILL EXPIRE AT 715 PM EDT...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT.

&&

LAT...LON 4171 7189 4195 7199 4200 7186 4201 7163
      4186 7153

$$

JWD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 4:12 AM EDT	Flash Flood Watch	BOX	Bristol, Kent, Newport, Providence, Washington	15 hr
Jul 23, 5:10 PM EDT	Special Weather Statement	BOX	Providence	50 min
Jul 23, 5:32 AM EDT	Areal Flood Advisory	BOX	Capitol Planning Region	3 hr
Jul 23, 7:03 AM EDT	Areal Flood Advisory	BOX	Northeastern Connecticut Planning Region	117 min

Nearby

Flash Flood Warnings in Rhode Island, 2013 Flash Flood Warnings in Connecticut, 2013 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.