Alert archive / Connecticut / Flash Flood Warnings in 2009

Flash Flood Warning 13, NWS New York, NY

July 1, 2009Southeastern Connecticut Planning Region, Connecticut; Suffolk County, New York

NWS New York, NY issued this flash flood warning at Jul 1, 2009, 1:23 PM EDT for Southeastern Connecticut Planning Region, Connecticut; Suffolk County, New York. It was in force for 104 min. 1 report 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 1, 2009, 1:23 PM EDT (17:23 UTC)
Expired: Jul 1, 2009, 3:07 PM EDT
In force: 104 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Flood severity: None

Counties Southeastern Connecticut Planning Region, CT, Suffolk County, NY

The radar

The Brookhaven radar (KOKX), 61 km from the middle of the area, began a volume at 17:22 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
Jul 1, 3:00 PM EDT	FLASH FLOOD	Fishers Island, NY	ROADS CLOSED DUE TO FLASH FLOODING. OCEAN VIEW AVENUE AND BEACH AVENUE CLOSED.

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, 5.4 hours before the alert went out and 61 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: 578 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 953 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KOKX 011723
FFWOKX
CTC011-NYC103-012015-
/O.NEW.KOKX.FF.W.0013.090701T1723Z-090701T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
123 PM EDT WED JUL 1 2009

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SUFFOLK COUNTY IN SOUTHEAST NEW YORK...
  NEW LONDON COUNTY IN SOUTHERN CONNECTICUT...

* UNTIL 415 PM EDT...

* AT 119 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING FROM THUNDERSTORMS TRAINING OVER THE REGION...MOVING 
NORTH AT 30 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

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

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 4105 7187 4074 7282 4080 7269 4078 7278
      4102 7257 4115 7234 4119 7216 4119 7215
      4113 7233 4111 7233 4103 7219 4112 7213
      4110 7207 4101 7211 4106 7197 4109 7192
      4126 7205 4130 7193 4129 7192 4125 7198

$$

NV

1 follow-up statement

000 
WGUS71 KOKX 011907
FFSOKX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
307 PM EDT WED JUL 1 2009

CTC011-NYC103-011905-
/O.CAN.KOKX.FF.W.0013.000000T0000Z-090701T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW LONDON CT-SUFFOLK NY-
307 PM EDT WED JUL 1 2009

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SUFFOLK AND NEW
LONDON COUNTIES...

THE WARNING WILL BE CANCELLED AS THE HEAVY RAIN ASSOCIATED WITH 
TRAINING THUNDERSTORMS HAS MOVED NORTHEAST OF THE REGION. BETWEEN 3 
AND 6 INCHES OF RAIN HAS FALLEN ACROSS THE REGION...SO WIDESPREAD 
RESIDUAL FLOODING OF URBAN...POOR DRAINAGE AND LOW-LYING AREAS WILL 
BE SLOW TO SUBSIDE.  

LAT...LON 4105 7187 4074 7282 4080 7269 4078 7278
      4102 7257 4115 7234 4119 7216 4119 7215
      4113 7233 4111 7233 4103 7219 4112 7213
      4110 7207 4101 7211 4106 7197 4109 7192
      4126 7205 4130 7193 4129 7192 4125 7198

$$

NV

The office that day

Everything else NWS New York, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 1, 10:27 AM EDT	Severe Thunderstorm Warning	OKX	Southeastern Connecticut Planning Region	63 min
Jul 1, 10:49 AM EDT	Severe Thunderstorm Warning	OKX	Lower Connecticut River Valley Planning Region, Southeastern Connecticut Planning Region	56 min
Jul 1, 11:10 AM EDT	Areal Flood Advisory	OKX	Lower Connecticut River Valley Planning Region, Southeastern Connecticut Planning Region	3 hr
Jul 1, 11:32 AM EDT	Flash Flood Warning	OKX	Southeastern Connecticut Planning Region	118 min
Jul 1, 12:20 PM EDT	Areal Flood Advisory	OKX	Greater Bridgeport Planning Region	55 min
Jul 1, 12:23 PM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region	40 min
Jul 1, 3:49 PM EDT	Flash Flood Watch	OKX	Greater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region	30 hr
Jul 1, 6:15 AM EDT	Special Marine Warning	OKX		45 min
Jul 1, 10:32 AM EDT	Special Marine Warning	OKX		88 min
Jul 1, 11:11 AM EDT	Special Marine Warning	OKX		64 min
Jul 1, 11:26 AM EDT	Special Marine Warning	OKX		64 min
Jul 1, 11:43 AM EDT	Areal Flood Advisory	OKX	Nassau, Suffolk	92 min
Jul 1, 11:49 AM EDT	Special Marine Warning	OKX		56 min
Jul 1, 12:00 PM EDT	Special Marine Warning	OKX		2 hr
Jul 1, 12:02 PM EDT	Special Marine Warning	OKX		28 min
Jul 1, 12:55 PM EDT	Areal Flood Advisory	OKX	Suffolk	118 min
Jul 1, 2:19 PM EDT	Special Marine Warning	OKX		56 min
Jul 1, 3:26 PM EDT	Special Marine Warning	OKX		64 min
Jul 1, 4:22 PM EDT	Special Marine Warning	OKX		39 min
Jul 1, 5:10 PM EDT	Areal Flood Advisory	OKX	Putnam	30 min
Jul 1, 5:19 PM EDT	Areal Flood Advisory	OKX	Putnam	56 min
Jul 1, 5:40 PM EDT	Areal Flood Advisory	OKX	Orange	50 min
Jul 1, 5:57 PM EDT	Flash Flood Warning	OKX	Orange	93 min
Jul 1, 6:11 PM EDT	Areal Flood Advisory	OKX	Putnam	81 min
Jul 1, 6:26 PM EDT	Severe Thunderstorm Warning	OKX	Orange, Putnam	50 min
Jul 1, 6:44 PM EDT	Areal Flood Advisory	OKX	Putnam	59 min

Nearby

Flash Flood Warnings in Connecticut, 2009 Flash Flood Warnings in New York, 2009 Every flash flood warning in 2009

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.