Alert archive / New York / Tornado Warnings in 2019

Tornado Warning 3, NWS New York, NY

September 2, 2019Suffolk County, New York

NWS New York, NY issued this tornado warning at Sep 2, 2019, 4:38 PM EDT for Suffolk County, New York. It was in force for 18 min. 2 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 2, 2019, 4:38 PM EDT (20:38 UTC)
Expired: Sep 2, 2019, 4:56 PM EDT
In force: 18 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Suffolk County, NY

The radar

The Brookhaven radar (KOKX), 6 km from the middle of the area, began a volume at 20:40 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.

What was reported inside it

Time	Report	Where	Remark
Sep 2, 4:38 PM EDT	TORNADO	Manorville, NY	NWS STORM SURVEY INDICATED AN EFO TORNADO LEFT A 1.6 MILE PATH LENGTH AND 50 YARD PATH WIDTH OF PRIMARILY TREE DAMAGE IN MANORVILLE. MAXIMUM ESTIMATED SUSTAINED WINDS OF 85 MPH.
Sep 2, 4:46 PM EDT	TSTM WND DMG	1 N South Manor, NY	TREE DOWN ON NORTH ST, APPROXIMATELY 2MI SW OF SWAN LAKE GOLF CLUB. TIME ESTIMATED BY RADAR.

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, 8.6 hours before the alert went out and 6 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 826 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

757 
WFUS51 KOKX 022038
TOROKX
NYC103-022115-
/O.NEW.KOKX.TO.W.0003.190902T2038Z-190902T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New York NY
438 PM EDT Mon Sep 2 2019

The National Weather Service in Upton NY has issued a

* Tornado Warning for...
  Eastern Suffolk County in southeastern New York...

* Until 515 PM EDT.
    
* At 437 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Manorville, moving north at 30 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Calverton around 450 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4081 7279 4081 7288 4094 7282 4093 7269
TIME...MOT...LOC 2037Z 200DEG 24KT 4085 7283 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

DS

2 follow-up statements

961 
WWUS51 KOKX 022044
SVSOKX

Severe Weather Statement
National Weather Service New York NY
444 PM EDT Mon Sep 2 2019

NYC103-022115-
/O.CON.KOKX.TO.W.0003.000000T0000Z-190902T2115Z/
Suffolk NY-
444 PM EDT Mon Sep 2 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR EASTERN
SUFFOLK COUNTY...
    
At 443 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Manorville, moving north at 30 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Calverton around 450 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4085 7277 4087 7285 4094 7282 4093 7269
TIME...MOT...LOC 2043Z 200DEG 24KT 4089 7281 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

DS

065 
WWUS51 KOKX 022056
SVSOKX

Severe Weather Statement
National Weather Service New York NY
456 PM EDT Mon Sep 2 2019

NYC103-022105-
/O.CAN.KOKX.TO.W.0003.000000T0000Z-190902T2115Z/
Suffolk NY-
456 PM EDT Mon Sep 2 2019

...THE TORNADO WARNING FOR EASTERN SUFFOLK COUNTY IS CANCELLED...
                
The storm which prompted the warning has weakened and no longer 
appears capable of producing a tornado. Therefore, the warning has 
been cancelled.

LAT...LON 4085 7277 4087 7285 4094 7282 4093 7269
TIME...MOT...LOC 2053Z 200DEG 24KT 4097 7277 

$$

DS

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 2, 2:05 PM EDT	Special Weather Statement	OKX	New York, Richmond	40 min
Sep 2, 2:42 PM EDT	Severe Thunderstorm Warning	OKX	Kings, Richmond	48 min
Sep 2, 2:45 PM EDT	Special Marine Warning	OKX		60 min
Sep 2, 2:47 PM EDT	Special Marine Warning	OKX		58 min
Sep 2, 3:36 PM EDT	Special Weather Statement	OKX	Suffolk	39 min
Sep 2, 3:43 PM EDT	Special Marine Warning	OKX		47 min
Sep 2, 3:44 PM EDT	Special Marine Warning	OKX		40 min
Sep 2, 3:54 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	36 min
Sep 2, 4:19 PM EDT	Special Weather Statement	OKX	Suffolk	56 min
Sep 2, 4:23 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	52 min

Nearby

Tornado Warnings in New York, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.