Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 10, NWS New York, NY

May 26, 2021Bergen County, Passaic County, New Jersey; Orange County, Rockland County, Westchester County, New York

NWS New York, NY issued this severe thunderstorm warning at May 26, 2021, 6:54 PM EDT for Bergen County, Passaic County, New Jersey; Orange County, Rockland County, Westchester County, New York. It was in force for 24 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: May 26, 2021, 6:54 PM EDT (22:54 UTC)
Expired: May 26, 2021, 7:18 PM EDT
In force: 24 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bergen County, NJ, Passaic County, NJ, Orange County, NY, Rockland County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 115 km from the middle of the area, began a volume at 22:53 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
May 26, 7:06 PM EDT	TSTM WND DMG	2 W Ramsey, NJ	TREE DOWN ON 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
May 26, 2:48 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.9 hours before the alert went out and 115 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: 5 J/kg
Mixed-layer CIN: -233 J/kg
Mixed-layer LCL: 554 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 159 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

771 
WUUS51 KOKX 262254
SVROKX
NJC003-031-NYC071-087-119-262345-
/O.NEW.KOKX.SV.W.0010.210526T2254Z-210526T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service New York NY
654 PM EDT Wed May 26 2021

The National Weather Service in Upton NY has issued a

* Severe Thunderstorm Warning for...
  Central Passaic County in northeastern New Jersey...
  Northern Bergen County in northeastern New Jersey...
  Westchester County in southeastern New York...
  Southeastern Orange County in southeastern New York...
  Rockland County in southeastern New York...

* Until 745 PM EDT.

* At 653 PM EDT, severe thunderstorms were located along a line
  extending from near Ringwood to Wayne, moving east at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* Severe thunderstorms will be near...
  Suffern and Sloatsburg around 705 PM EDT.
  Ridgewood and Ramsey around 710 PM EDT.
  Monsey around 715 PM EDT.
  Pomona around 720 PM EDT.
  New City and Nanuet around 725 PM EDT.
  Haverstraw and Tappan around 730 PM EDT.
  Orangeburg around 735 PM EDT.
  Peekskill and Dobbs Ferry around 740 PM EDT.

This includes the following New York State COVID tent site 
Anthony Wayne Rec Center.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4117 7439 4133 7396 4133 7389 4098 7386
      4092 7429 4097 7428 4098 7430 4100 7430
      4100 7432
TIME...MOT...LOC 2253Z 251DEG 23KT 4115 7427 4094 7424 

HAIL...<.75IN
WIND...60MPH
 
$$

1 follow-up statement

666 
WWUS51 KOKX 262318
SVSOKX

Severe Weather Statement
National Weather Service New York NY
718 PM EDT Wed May 26 2021

NJC003-031-NYC071-087-119-262327-
/O.CAN.KOKX.SV.W.0010.000000T0000Z-210526T2345Z/
Passaic NJ-Bergen NJ-Westchester NY-Orange NY-Rockland NY-
718 PM EDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PASSAIC...NORTHERN
BERGEN...WESTCHESTER...SOUTHEASTERN ORANGE AND ROCKLAND COUNTIES IS
CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds 
up to 50 mph are still possible with these thunderstorms.

LAT...LON 4117 7439 4133 7396 4133 7389 4098 7386
      4092 7429 4097 7428 4098 7430 4100 7430
      4100 7432
TIME...MOT...LOC 2315Z 251DEG 23KT 4120 7409 4099 7406 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 6:12 PM EDT	Severe Thunderstorm Warning	OKX	Bergen, Essex, Hudson, Passaic, Union	46 min
May 26, 6:45 PM EDT	Special Weather Statement	OKX	Bergen, Passaic	60 min
May 26, 4:44 PM EDT	Special Weather Statement	OKX	Orange	46 min
May 26, 6:15 PM EDT	Special Marine Warning	OKX		90 min
May 26, 6:56 PM EDT	Special Marine Warning	OKX		94 min
May 26, 7:34 PM EDT	Special Weather Statement	OKX	Nassau	41 min
May 26, 7:44 PM EDT	Severe Thunderstorm Warning	OKX	Nassau, Suffolk	25 min

Nearby

Severe Thunderstorm Warnings in New York, 2021 Severe Thunderstorm Warnings in New Jersey, 2021 Every severe thunderstorm warning 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.