Alert archive / New York / Tornado Warnings in 2009

Tornado Warning 9, NWS New York, NY

July 29, 2009Orange County, New York

NWS New York, NY issued this tornado warning at Jul 29, 2009, 2:58 PM EDT for Orange County, New York. It was in force for 30 min. 4 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: Jul 29, 2009, 2:58 PM EDT (18:58 UTC)
Expired: Jul 29, 2009, 3:28 PM EDT
In force: 30 min
Issued by: NWS New York, NY
Area: Storm-based polygon

County Orange County, NY

The radar

The Albany radar (KENX), 142 km from the middle of the area, began a volume at 19:01 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 29, 3:05 PM EDT	TSTM WND DMG	Unionville, NY	MANY TREES DOWN ALONG COUNTY ROUTE 284.
Jul 29, 3:05 PM EDT	NON-TSTM WND DMG	Unionville, NY	MANY TREES DOWN ALONG COUNTY ROUTE 284.
Jul 29, 3:05 PM EDT	TORNADO	Unionville, NY	CONFIRMED EF0 TORNADO
Jul 29, 3:10 PM EDT	TSTM WND DMG	5 Nne Unionville, NY	COUNTY ROUTE 1 AND 284. TREES AND DEBRIS ALL OVER THE ROAD AND COVERING CARS.

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
Jul 29, 12:49 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.0 hours before the alert went out and 157 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: 594 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 646 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 104 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.

000 
WFUS51 KOKX 291858
TOROKX
NYC071-291945-
/O.NEW.KOKX.TO.W.0009.090729T1858Z-090729T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
258 PM EDT WED JUL 29 2009

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL ORANGE COUNTY IN SOUTHEAST NEW YORK...

* UNTIL 345 PM EDT...

* AT 257 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  UNIONVILLE...OR 7 MILES SOUTHEAST OF PORT JERVIS...MOVING NORTHEAST
  AT 25 MPH.

* THE TORNADO WILL BE NEAR...
  UNIONVILLE BY 305 PM...
  8 MILES SOUTHEAST OF OTISVILLE BY 320 PM...
  MIDDLETOWN AND FLORIDA BY 330 PM...
  GOSHEN BY 335 PM...
  6 MILES NORTHWEST OF CHESTER BY 340 PM...

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM WEDNESDAY
EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND
SOUTHEAST NEW YORK.

&&

LAT...LON 4140 7474 4151 7457 4139 7419 4124 7449
      4134 7469 4135 7471 4138 7472
TIME...MOT...LOC 1858Z 237DEG 22KT 4129 7461

$$

JMC

2 follow-up statements

000 
WWUS51 KOKX 291921 RRA
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
321 PM EDT WED JUL 29 2009

NYC071-291945-
/O.CON.KOKX.TO.W.0009.000000T0000Z-090729T1945Z/
ORANGE NY-
321 PM EDT WED JUL 29 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM EDT FOR CENTRAL
ORANGE COUNTY...

AT 320 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR MIDDLETOWN...
MOVING NORTHEAST AT 25 MPH.

THE TORNADO WILL BE NEAR...
  MIDDLETOWN...GOSHEN AND 8 MILES NORTHWEST OF CHESTER BY 330 PM...

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM WEDNESDAY
EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND
SOUTHEAST NEW YORK.

&&

LAT...LON 4140 7474 4151 7457 4139 7419 4124 7449
      4134 7469 4135 7471 4138 7472
TIME...MOT...LOC 1921Z 230DEG 24KT 4140 7445

$$

JMC

000 
WWUS51 KOKX 291928
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
328 PM EDT WED JUL 29 2009

NYC071-291936-
/O.CAN.KOKX.TO.W.0009.000000T0000Z-090729T1945Z/
ORANGE NY-
328 PM EDT WED JUL 29 2009

...THE TORNADO WARNING FOR CENTRAL ORANGE COUNTY IS CANCELLED...

THE SEVERE THUNDERSTORM WHICH PROMPTED THE TORNADO WARNING HAS 
SIGNIFICANTLY WEAKENED. THE TORNADO WARNING HAS THEREFORE BEEN 
CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM WEDNESDAY
EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND
SOUTHEAST NEW YORK.

LAT...LON 4140 7474 4151 7457 4139 7419 4124 7449
      4134 7469 4135 7471 4138 7472
TIME...MOT...LOC 1926Z 230DEG 24KT 4142 7441

$$

JMC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 4:21 AM EDT	Flash Flood Watch	OKX	Bronx, Kings, New York, Orange, Putnam, Richmond and 2 more	24 hr
Jul 29, 1:35 PM EDT	Areal Flood Advisory	OKX	Orange, Putnam, Rockland, Westchester	115 min
Jul 29, 1:49 PM EDT	Severe Thunderstorm Warning	OKX	Putnam, Rockland, Westchester	30 min
Jul 29, 2:35 PM EDT	Areal Flood Advisory	OKX	Orange	115 min
Jul 29, 2:38 PM EDT	Severe Thunderstorm Warning	OKX	Kings, New York, Queens, Richmond	37 min
Jul 29, 2:39 PM EDT	Special Marine Warning	OKX		36 min
Jul 29, 2:39 PM EDT	Severe Thunderstorm Warning	OKX	Orange	57 min
Jul 29, 2:55 PM EDT	Flash Flood Warning	OKX	Bronx, Kings, New York, Queens, Richmond	2 hr
Jul 29, 6:17 PM EDT	Special Marine Warning	OKX		28 min
Jul 29, 6:23 PM EDT	Areal Flood Advisory	OKX	Bronx, Kings, New York, Queens, Richmond, Westchester	4 hr
Jul 29, 6:42 PM EDT	Areal Flood Advisory	OKX	Orange	2 hr
Jul 29, 6:45 PM EDT	Special Marine Warning	OKX		44 min
Jul 29, 6:49 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, Kings, New York, Queens	29 min
Jul 29, 7:38 PM EDT	Special Marine Warning	OKX		82 min
Jul 29, 7:58 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, Kings, Nassau, Queens, Suffolk	47 min

Nearby

Tornado Warnings in New York, 2009 Every tornado warning in 2009 Tornadoes 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.