Alert archive / New York / Tornado Warnings in 2021

Tornado Warning 15, NWS New York, NY

November 13, 2021Suffolk County, New York

NWS New York, NY issued this tornado warning at Nov 13, 2021, 3:57 PM EST for Suffolk County, New York. It was in force for 18 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: Nov 13, 2021, 3:57 PM EST (20:57 UTC)
Expired: Nov 13, 2021, 4:15 PM EST
In force: 18 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Suffolk County, NY

The radar

The Brookhaven radar (KOKX), 26 km from the middle of the area, began a volume at 21:01 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
Nov 13, 4:00 PM EST	TSTM WND DMG	3 Wnw Peconic River, NY	TREES DOWN ON WIRES ON OLD COUNTRY ROAD.

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
Nov 13, 12:27 PM EST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.0 hours before the alert went out and 26 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: 1435 m above ground
0-6 km bulk shear: 82 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

239 
WFUS51 KOKX 132057
TOROKX
NYC103-132130-
/O.NEW.KOKX.TO.W.0015.211113T2057Z-211113T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New York NY
357 PM EST Sat Nov 13 2021

The National Weather Service in Upton NY has issued a

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

* Until 430 PM EST.
    
* At 357 PM EST, a severe thunderstorm capable of producing a tornado
  was located near Riverhead, moving northeast at 55 mph.

  HAZARD...Tornado and quarter size hail.

  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...
  Riverhead around 400 PM EST.
  Mattituck around 410 PM EST.

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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 4090 7277 4105 7252 4096 7243 4095 7247
      4097 7249 4097 7252 4093 7256 4093 7255
      4092 7254 4092 7255 4086 7271
TIME...MOT...LOC 2057Z 236DEG 50KT 4091 7270 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

MW

2 follow-up statements

965 
WWUS51 KOKX 132106
SVSOKX

Severe Weather Statement
National Weather Service New York NY
406 PM EST Sat Nov 13 2021

NYC103-132130-
/O.CON.KOKX.TO.W.0015.000000T0000Z-211113T2130Z/
Suffolk NY-
406 PM EST Sat Nov 13 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 430 PM EST FOR CENTRAL
SUFFOLK COUNTY...
    
At 406 PM EST, a severe thunderstorm capable of producing a tornado
was located over Mattituck, moving northeast at 60 mph.

HAZARD...Tornado and quarter size hail.

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 tornadic thunderstorm will remain over mainly rural areas of
central Suffolk County.

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.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 4093 7257 4098 7261 4105 7252 4096 7243
      4095 7247 4097 7249 4097 7252 4095 7254
      4094 7256 4092 7254 4092 7255
TIME...MOT...LOC 2106Z 236DEG 50KT 4098 7256 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

MW

464 
WWUS51 KOKX 132115
SVSOKX

Severe Weather Statement
National Weather Service New York NY
415 PM EST Sat Nov 13 2021

NYC103-132125-
/O.CAN.KOKX.TO.W.0015.000000T0000Z-211113T2130Z/
Suffolk NY-
415 PM EST Sat Nov 13 2021

...THE TORNADO WARNING FOR CENTRAL SUFFOLK COUNTY IS CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

A Severe Thunderstorm Watch remains in effect until 700 PM EST for
southeastern New York.

LAT...LON 4093 7257 4098 7261 4105 7252 4096 7243
      4095 7247 4097 7249 4097 7252 4095 7254
      4094 7256 4092 7254 4092 7255
TIME...MOT...LOC 2114Z 236DEG 50KT 4105 7242 

$$

MW

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 13, 12:47 PM EST	Special Weather Statement	OKX	Orange	88 min
Nov 13, 1:02 PM EST	Severe Thunderstorm Warning	OKX	Orange	47 min
Nov 13, 1:26 PM EST	Severe Thunderstorm Warning	OKX	Orange, Putnam, Rockland, Westchester	49 min
Nov 13, 1:48 PM EST	Severe Thunderstorm Warning	OKX	Bronx, Kings, New York, Queens, Richmond	42 min
Nov 13, 1:54 PM EST	Special Marine Warning	OKX		96 min
Nov 13, 2:11 PM EST	Special Weather Statement	OKX	Putnam	49 min
Nov 13, 2:22 PM EST	Severe Thunderstorm Warning	OKX	Kings, Nassau, Queens	38 min
Nov 13, 2:47 PM EST	Special Marine Warning	OKX		58 min
Nov 13, 2:53 PM EST	Tornado Warning	OKX	Nassau, Suffolk	37 min
Nov 13, 2:59 PM EST	Special Marine Warning	OKX		61 min
Nov 13, 3:18 PM EST	Special Weather Statement	OKX	Suffolk	57 min
Nov 13, 3:20 PM EST	Tornado Warning	OKX	Suffolk	25 min
Nov 13, 3:36 PM EST	Special Marine Warning	OKX		54 min
Nov 13, 3:40 PM EST	Tornado Warning	OKX	Suffolk	24 min
Nov 13, 3:54 PM EST	Special Marine Warning	OKX		66 min
Nov 13, 4:07 PM EST	Tornado Warning	OKX	Suffolk	23 min
Nov 13, 4:11 PM EST	Special Marine Warning	OKX		47 min
Nov 13, 4:18 PM EST	Severe Thunderstorm Warning	OKX	Suffolk	27 min
Nov 13, 4:30 PM EST	Severe Thunderstorm Warning	OKX	Suffolk	30 min

Nearby

Tornado Warnings in New York, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.