Alert archive / New York / Tornado Warnings in 2012

Tornado Warning 13, NWS New York, NY

September 18, 2012Suffolk County, New York

NWS New York, NY issued this tornado warning at Sep 18, 2012, 9:34 PM EDT for Suffolk County, New York. It was in force for 26 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: Sep 18, 2012, 9:34 PM EDT (01:34 UTC)
Expired: Sep 18, 2012, 10:00 PM EDT
In force: 26 min
Issued by: NWS New York, NY
Area: Storm-based polygon

County Suffolk County, NY

The radar

The Brookhaven radar (KOKX), 35 km from the middle of the area, began a volume at 01:34 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 18, 9:47 PM EDT	MARINE TSTM WIND 44	Amity Harbor, NY	MESONET

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 18, 3:38 PM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 1.6 hours before the alert went out and 35 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: 270 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 629 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 667 m²/s²
0-3 km storm-relative helicity: 699 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

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

972 
WFUS51 KOKX 190134
TOROKX
NYC103-190200-
/O.NEW.KOKX.TO.W.0013.120919T0134Z-120919T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
934 PM EDT TUE SEP 18 2012

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN SUFFOLK COUNTY IN SOUTHEAST NEW YORK...

* UNTIL 1000 PM EDT...

* AT 932 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 14 MILES
  SOUTHWEST OF GILGO STATE PARK...OR 10 MILES SOUTHEAST OF LONG
  BEACH...MOVING NORTHEAST AT 55 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  AMITYVILLE...LINDENHURST...BABYLON...ROBERT MOSES STATE PARK...
  CAPTREE STATE PARK...BAY SHORE...ISLIP...SAYVILLE...RONKONKOMA...
  PATCHOGUE...HOLBROOK...DAVIS PARK AND BRENTWOOD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4066 7342 4085 7314 4074 7301 4072 7304
      4072 7312 4069 7315 4070 7324 4065 7338
      4067 7324 4064 7321 4066 7321 4066 7311
      4071 7297 4070 7294 4062 7323 4063 7336
      4061 7342
TIME...MOT...LOC 0134Z 227DEG 47KT 4049 7352

$$

GOODMAN

2 follow-up statements

898 
WWUS51 KOKX 190146
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
946 PM EDT TUE SEP 18 2012

NYC103-190200-
/O.CON.KOKX.TO.W.0013.000000T0000Z-120919T0200Z/
SUFFOLK NY-
946 PM EDT TUE SEP 18 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT FOR SUFFOLK
COUNTY...

AT 944 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A POSSIBLE TORNADO JUST OFFSHORE ABOUT 6 MILES SOUTH OF 
LINDENHURST...MOVING NORTHEAST AT 50 MPH. 

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ROBERT
MOSES STATE PARK...BABYLON...CAPTREE STATE PARK...WEST ISLIP...
BRIGHTWATERS...BAY SHORE...NORTH BAY SHORE...ISLIP...ISLIP TERRACE...
EAST ISLIP AND BRENTWOOD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

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 4066 7342 4079 7323 4072 7312 4069 7315
      4070 7324 4065 7338 4067 7324 4062 7323
      4063 7336 4061 7342
TIME...MOT...LOC 0146Z 223DEG 44KT 4061 7337

$$

GOODMAN

846 
WWUS51 KOKX 190205
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
1005 PM EDT TUE SEP 18 2012

NYC103-190213-
/O.EXP.KOKX.TO.W.0013.000000T0000Z-120919T0200Z/
SUFFOLK NY-
1005 PM EDT TUE SEP 18 2012

...THE TORNADO WARNING FOR SUFFOLK COUNTY HAS EXPIRED...

LOW LEVEL ROTATION IN THE STORM THAT PROMPTED THE WARNING HAS 
WEAKENED...AND THE STORM NO LONGER APPEARS CAPABLE OF PRODUCING A 
TORNADO. HOWEVER...STRAIGHT LINE DAMAGING WINDS ARE STILL POSSIBLE 
WITH THE LINE OF STORMS CROSSING SUFFOLK COUNTY...AND A SEVERE 
THUNDERSTORM WARNING AND TORNADO WATCH BOTH REMAIN IN EFFECT UNTIL 
11 PM. 

LAT...LON 4066 7342 4079 7323 4072 7312 4069 7315
      4070 7324 4065 7338 4067 7324 4062 7323
      4063 7336 4061 7342
TIME...MOT...LOC 0146Z 223DEG 44KT 4061 7337

$$

GOODMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 18, 8:10 PM EDT	Special Marine Warning	OKX		65 min
Sep 18, 8:21 PM EDT	Areal Flood Advisory	OKX	Nassau, Suffolk	54 min
Sep 18, 8:29 PM EDT	Severe Thunderstorm Warning	OKX	Kings, Nassau, Queens, Westchester	46 min
Sep 18, 8:30 PM EDT	Areal Flood Advisory	OKX	Kings, Queens	45 min
Sep 18, 9:04 PM EDT	Areal Flood Advisory	OKX	Suffolk	86 min
Sep 18, 9:09 PM EDT	Severe Thunderstorm Warning	OKX	Nassau, Suffolk	51 min
Sep 18, 9:20 PM EDT	Special Marine Warning	OKX		55 min
Sep 18, 9:26 PM EDT	Special Marine Warning	OKX		94 min
Sep 18, 9:35 PM EDT	Areal Flood Advisory	OKX	Nassau	55 min
Sep 18, 9:47 PM EDT	Flash Flood Warning	OKX	Nassau, Suffolk	88 min
Sep 18, 9:58 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	62 min
Sep 18, 10:18 PM EDT	Special Marine Warning	OKX		57 min
Sep 18, 10:31 PM EDT	Special Marine Warning	OKX		59 min
Sep 18, 10:41 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	22 min
Sep 18, 10:59 PM EDT	Special Marine Warning	OKX		31 min
Sep 18, 11:12 PM EDT	Special Marine Warning	OKX		63 min
Sep 18, 11:21 PM EDT	Areal Flood Advisory	OKX	Suffolk	54 min
Sep 19, 12:18 AM EDT	Areal Flood Advisory	OKX	Suffolk	117 min
Sep 19, 12:51 AM EDT	Special Marine Warning	OKX		24 min
Sep 19, 3:39 AM EDT	Small Craft Advisory	OKX		14 hr
Sep 19, 5:46 PM EDT	Small Craft Advisory	OKX		22 hr

Nearby

Tornado Warnings in New York, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.