Alert archive / Connecticut / Flash Flood Warnings in 2013

Flash Flood Warning 13, NWS Boston/Norton, MA

June 27, 2013Capitol Planning Region, Connecticut

NWS Boston/Norton, MA issued this flash flood warning at Jun 27, 2013, 11:16 PM EDT for Capitol Planning Region, Connecticut. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 27, 2013, 11:16 PM EDT (03:16 UTC)
Expired
Jun 28, 2013, 2:15 AM EDT
In force
3 hr
Issued by
NWS Boston/Norton, MA
Area
Storm-based polygon
Flood severity
None

County Capitol Planning Region, CT

The radar

The Brookhaven radar (KOKX), 110 km from the middle of the area, began a volume at 03:18 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 00:00Z, 3.3 hours before the alert went out and 110 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 00:00Z on 2013-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 349 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 00:00Z on 2013-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.1939Sfc1 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
349 J/kg
Mixed-layer CIN
-92 J/kg
Mixed-layer LCL
637 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.8

Open this sounding in Storm Lab

The text

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

135 
WGUS51 KBOX 280316
FFWBOX
CTC003-013-280615-
/O.NEW.KBOX.FF.W.0013.130628T0316Z-130628T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
1116 PM EDT THU JUN 27 2013

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  HARTFORD COUNTY IN NORTHERN CONNECTICUT...
  TOLLAND COUNTY IN NORTHERN CONNECTICUT...

* UNTIL 215 AM EDT

* AT 1110 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
  HEAVY RAIN MOVING INTO THE WARNED AREA FROM SOUTHERN CONNECTICUT. 
  PORTIONS OF HARTFORD COUNTY HAD RECEIVED UP TO 3 INCHES OF RAIN 
  EARLIER THIS AFTERNOON. 
  
  FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
  HARTFORD...NEW BRITAIN...BRISTOL... 
  MANCHESTER...NEWINGTON...WINDSOR LOCKS...MANSFIELD...VERNON... 
  FARMINGTON...PLAINVILLE...WETHERSFIELD... BERLIN...ENFIELD...ROCKY 
  HILL...GLASTONBURY...SOUTHINGTON...SIMSBURY...STAFFORD... 
  BLOOMFIELD...WINDSOR...ANDOVER...AVON AND BURLINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING IS ISSUED FOR RAPID AND POTENTIALLY LIFE
THREATENING FLOODING. IN URBAN AREAS AVOID FLOODED ROADWAYS AND OBEY
ROAD CLOSURES. THOSE LIVING ALONG STREAMS AND CREEKS SHOULD MOVE TO
HIGHER GROUND IMMEDIATELY TO PROTECT LIFE AND PROPERTY.
&&

LAT...LON 4204 7301 4204 7301 4204 7282 4200 7281
      4204 7275 4203 7210 4196 7210 4196 7222
      4175 7216 4172 7225 4160 7233 4158 7246
      4165 7251 4164 7266 4155 7285 4156 7295
      4180 7302 4181 7295 4197 7289 4197 7303

$$

AED

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 12:30 PM EDTAreal Flood AdvisoryBOXCapitol Planning Region60 min
Jun 28, 1:47 PM EDTAreal Flood AdvisoryBOXCapitol Planning Region118 min
Jun 28, 5:37 PM EDTAreal Flood AdvisoryBOXCapitol Planning Region113 min
Jun 28, 6:08 PM EDTFlash Flood WarningBOXCapitol Planning Region2 hr

Nearby

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