Alert archive / New York / Tornado Warnings in 2008

Tornado Warning 9, NWS New York, NY

September 6, 2008Putnam County, Westchester County, New York; Greater Bridgeport Planning Region, Connecticut

NWS New York, NY issued this tornado warning at Sep 6, 2008, 7:40 PM EDT for Putnam County, Westchester County, New York; Greater Bridgeport Planning Region, Connecticut. It was in force for 50 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
Sep 6, 2008, 7:40 PM EDT (23:40 UTC)
Expired
Sep 6, 2008, 8:30 PM EDT
In force
50 min
Issued by
NWS New York, NY
Area
Storm-based polygon

Counties Greater Bridgeport Planning Region, CT, Putnam County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 75 km from the middle of the area, began a volume at 23:40 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, 11.7 hours before the alert went out and 75 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 2008-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 756 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 2008-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
756 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
562 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

000 
WFUS51 KOKX 062340
TOROKX
CTC001-NYC079-119-070030-
/O.NEW.KOKX.TO.W.0009.080906T2340Z-080907T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE UPTON NY
740 PM EDT SAT SEP 6 2008

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* TORNADO WARNING FOR...
  WESTCHESTER COUNTY IN SOUTHEAST NEW YORK...
  FAIRFIELD COUNTY IN SOUTHERN CONNECTICUT...
  PUTNAM COUNTY IN SOUTHEAST NEW YORK...

* UNTIL 830 PM EDT...

* AT 735 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A RAIN BAND CAPABLE OF PRODUCING A TORNADO NEAR WILTON...OR 8 
  MILES NORTHEAST OF NEW CANAAN...MOVING NORTHWEST AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  GEORGETOWN BY 745 PM...
  RIDGEFIELD BY 750 PM...
  BETHEL BY 755 PM...
  DANBURY BY 805 PM...
  BREWSTER BY 815 PM...
  8 MILES NORTHEAST OF MAHOPAC BY 820 PM...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4137 7376 4151 7350 4122 7323 4111 7341
TIME...MOT...LOC 2339Z 141DEG 23KT 4124 7340

$$

MPS
1 follow-up statement
000 
WWUS51 KOKX 070022
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE UPTON NY
822 PM EDT SAT SEP 6 2008

CTC001-NYC079-119-070032-
/O.EXP.KOKX.TO.W.0009.000000T0000Z-080907T0030Z/
PUTNAM NY-FAIRFIELD CT-WESTCHESTER NY-
822 PM EDT SAT SEP 6 2008

...THE TORNADO WARNING FOR WESTCHESTER...FAIRFIELD AND PUTNAM
COUNTIES WILL EXPIRE AT 830 PM EDT...

THE STORMS THAT WERE CAPABLE OF PRODUCING THE TORNADO HAS MOVED OUT 
OF THE AREA.

LAT...LON 4137 7376 4151 7350 4122 7323 4111 7341
TIME...MOT...LOC 0022Z 141DEG 23KT 4145 7364

$$

MPS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 3:13 PM EDTAreal Flood AdvisoryOKXBronx, Kings, New York, Queens, Richmond, Westchester92 min
Sep 6, 3:56 PM EDTAreal Flood AdvisoryOKXOrange, Putnam, Rockland, Westchester94 min
Sep 6, 4:39 PM EDTFlash Flood WarningOKXBronx, Orange, Putnam, Rockland, Westchester6 hr
Sep 6, 4:47 PM EDTAreal Flood AdvisoryOKXBronx, Kings, Nassau, New York, Queens, Richmond and 1 more3 hr
Sep 6, 5:34 PM EDTFlash Flood WarningOKXKings, Nassau, New York, Queens, Richmond4 hr
Sep 6, 6:50 PM EDTFlash Flood WarningOKXSuffolk6 hr
Sep 6, 7:00 PM EDTSpecial Marine WarningOKX30 min
Sep 6, 7:24 PM EDTSpecial Marine WarningOKX66 min
Sep 6, 6:18 PM EDTFlash Flood WarningOKXGreater Bridgeport Planning Region6 hr
Sep 6, 7:03 PM EDTFlash Flood WarningOKXLower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region6 hr

Nearby

Tornado Warnings in New York, 2008Tornado Warnings in Connecticut, 2008Every tornado warning in 2008Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.