Alert archive / Connecticut / Flash Flood Warnings in 2008

Flash Flood Warning 16, NWS Boston/Norton, MA

September 28, 2008Capitol Planning Region, Connecticut

NWS Boston/Norton, MA issued this flash flood warning at Sep 28, 2008, 8:02 PM EDT for Capitol Planning Region, Connecticut. It was in force for 2 hr. 3 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 28, 2008, 8:02 PM EDT (00:02 UTC)
Expired: Sep 28, 2008, 10:28 PM EDT
In force: 2 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), 95 km from the middle of the area, began a volume at 00:04 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

Time	Report	Where	Remark
Sep 28, 8:17 PM EDT	FLASH FLOOD	Hartford, CT	4 CARS STUCK IN FLOODWATERS ON ELLIOT STREET
Sep 28, 8:40 PM EDT	FLASH FLOOD	Hartford, CT	BASEMENT FLOODING ON MAPLE AVENUE
Sep 28, 9:32 PM EDT	FLASH FLOOD	Wethersfield, CT	3 HOMES WITH FLOODED BASEMENTS ON PARKVIEW DRIVE. THE FIRE DEPARTMENT IS PUMPING WATER OUT OF THE BASEMENTS.

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 00:00Z, 0.0 hours before the alert went out and 95 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: 283 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 673 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 11 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.

000 
WGUS51 KBOX 290002
FFWBOX
CTC003-013-290300-
/O.NEW.KBOX.FF.W.0016.080929T0002Z-080929T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
802 PM EDT SUN SEP 28 2008

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  HARTFORD COUNTY IN NORTHERN CONNECTICUT...
  THIS INCLUDES THE CITIES OF...WINDSOR LOCKS...WEST HARTFORD...
  NEWINGTON...NEW BRITAIN...MANCHESTER...HARTFORD...EAST HARTFORD...
  BRISTOL...
  WESTERN TOLLAND COUNTY IN NORTHERN CONNECTICUT...
  THIS INCLUDES THE CITY OF VERNON...

* UNTIL 1100 PM EDT

* AT 754 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING FROM TORRENTIAL SHOWERS OVER THE WARNED AREA.  TORRENTIAL 
RAIN WAS TRAINING OVER CENTRAL AND SOUTHERN HARTFORD AND TOLLAND 
COUNTIES.  RAINFALL RATES OF 1 TO 2 INCHES ARE EXPECTED IN JUST ONE 
HOUR  SOME LOCATIONS MAY SEE IN EXCESS OF 4 INCHES OF RAIN IN JUST 
A FEW HOURS...ESPECIALLY IN THE HARTFORD METROPOLITAN AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WINDSOR...
  WILLINGTON...TOLLAND...SOUTH WINDSOR...SIMSBURY...GRANBY...
  ELLINGTON...EAST WINDSOR...EAST GRANBY...CANTON AND BLOOMFIELD

EXCESSIVE RUNOFF FROM HEAVY RAIN WILL CAUSE RAPID FLOODING OF SMALL
CREEKS AND STREAMS. FLOODING OF URBAN AREAS...INCLUDING ROADS AND
UNDERPASSES IS ALSO EXPECTED.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY...INCLUDING UNDERPASSES. THE WATER MAY BE TOO DEEP TO ALLOW
VEHICLES TO CROSS SAFELY...OR THE ROADWAY MAY BE UNDERMINED.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN TAUNTON.

LAT...LON 4157 7295 4163 7295 4165 7299 4180 7303
      4182 7296 4187 7297 4191 7292 4196 7291
      4195 7226 4164 7229 4160 7249 4164 7252
      4163 7266 4154 7286

$$

FRANK

2 follow-up statements

000 
WGUS71 KBOX 290127
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
927 PM EDT SUN SEP 28 2008

CTC003-013-290300-
/O.CON.KBOX.FF.W.0016.000000T0000Z-080929T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TOLLAND CT-HARTFORD CT-
927 PM EDT SUN SEP 28 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT FOR
HARTFORD AND WESTERN TOLLAND COUNTIES...

AT 920 PM EDT...TRAINED WEATHER SPOTTERS REPORTED THAT THERE IS 
SIGNIFICANT URBAN FLOODING ACROSS THE HARTFORD METROPOLITAN AREA.  
SEVERAL CARS ARE STUCK IN FLOOD WATERS WITH NUMEROUS REPORTS OF 
BASEMENT FLOODING.  

DOPPLER RADAR CONTINUED TO INDICATE TORRENTIAL RAIN SHOWERS MOVING 
ACROSS CENTRAL AND SOUTHERN HARTFORD COUNTY AND INTO PORTIONS OF 
TOLLAND COUNTY.  SOME LOCATIONS MAY CONTINUE TO SEE RAINFALL RATES 
IN EXCESS OF 1 INCH PER HOUR.  THIS WILL LEAD TO MORE 
FLOODING...PARTICULARLY IN THE HARTFORD METROPOLITAN AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WINDSOR
LOCKS...WINDSOR...WILLINGTON...WEST HARTFORD...VERNON...TOLLAND...
SOUTH WINDSOR...SIMSBURY...MANCHESTER...HARTFORD...GRANBY...
ELLINGTON...EAST WINDSOR...EAST HARTFORD...EAST GRANBY...COVENTRY...
CANTON...BURLINGTON...BOLTON...BLOOMFIELD...AVON AND ANDOVER

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.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
TAUNTON.

LAT...LON 4157 7295 4163 7295 4165 7299 4180 7303
      4182 7296 4187 7297 4191 7292 4196 7291
      4195 7226 4164 7229 4160 7249 4164 7252
      4163 7266 4154 7286

$$

FRANK

000 
WGUS71 KBOX 290228
FFSBOX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
1028 PM EDT SUN SEP 28 2008

CTC003-013-290236-
/O.CAN.KBOX.FF.W.0016.000000T0000Z-080929T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TOLLAND CT-HARTFORD CT-
1028 PM EDT SUN SEP 28 2008

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR HARTFORD AND
WESTERN TOLLAND COUNTIES...

THE TORRENTIAL RAIN THAT RESULTED IN FLASH FLOODING EARLY IN THE 
EVENING ACROSS CENTRAL AND SOUTHERN HARTFORD AND TOLLAND COUNTIES 
HAS DIMINISHED IN INTENSITY.  THEREFORE...THE FLASH FLOOD WARNING IS 
CANCELLED.  HOWEVER...NUMEROUS SHOWERS ARE STILL EXPECTED 
OVERNIGHT.  THIS MAY LEAD TO SOME MINOR POOR DRAINAGE STREET 
FLOODING IN AREAS THAT WERE HARD HIT THIS EVENING.


LAT...LON 4157 7295 4163 7295 4165 7299 4180 7303
      4182 7296 4187 7297 4191 7292 4196 7291
      4195 7226 4164 7229 4160 7249 4164 7252
      4163 7266 4154 7286

$$

FRANK

Nearby

Flash Flood Warnings in Connecticut, 2008 Every flash flood warning in 2008

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.