Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS New York, NY

June 22, 2012Bergen County, New Jersey; Orange County, Rockland County, Westchester County, New York

NWS New York, NY issued this severe thunderstorm warning at Jun 22, 2012, 4:46 PM EDT for Bergen County, New Jersey; Orange County, Rockland County, Westchester County, New York. It was in force for 34 min. 3 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
Jun 22, 2012, 4:46 PM EDT (20:46 UTC)
Expired
Jun 22, 2012, 5:20 PM EDT
In force
34 min
Issued by
NWS New York, NY
Area
Storm-based polygon

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

The radar

The Brookhaven radar (KOKX), 102 km from the middle of the area, began a volume at 20:46 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

TimeReportWhereRemark
Jun 22, 4:55 PM EDTTSTM WND DMGRamapo, NYLARGE TREE BLOCKING TWO LANES OF US HWY 202 AT LAKE ROAD
Jun 22, 4:55 PM EDTHAIL 0.88Bardonia, NYNICKEL SIZE HAIL IN BARDONIA
Jun 22, 5:00 PM EDTHAIL 1Spring Valley, NYQUARTER SIZE HAIL ON I-287 NEAR MILE MARKER 20.

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.

IssuedProductOfficeLasted
Jun 22, 1:41 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.8 hours before the alert went out and 102 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2012-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 840 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2012-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
840 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1512 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

058 
WUUS51 KOKX 222046
SVROKX
NJC003-NYC071-087-119-222130-
/O.NEW.KOKX.SV.W.0013.120622T2046Z-120622T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
446 PM EDT FRI JUN 22 2012

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTCHESTER COUNTY IN SOUTHEAST NEW YORK...
  NORTHWESTERN BERGEN COUNTY IN NORTHEAST NEW JERSEY...
  ROCKLAND COUNTY IN SOUTHEAST NEW YORK...
  SOUTHEASTERN ORANGE COUNTY IN SOUTHEAST NEW YORK...

* UNTIL 530 PM EDT...

* AT 442 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  POMONA...OR NEAR MONSEY...AND MOVING EAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  NANUET...PEARL RIVER...NEW CITY...HAVERSTRAW...NYACK...UPPER
  NYACK...NORTH TARRYTOWN...PEEKSKILL...OSSINING AND HAWTHORNE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM FRIDAY
EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND
SOUTHEAST NEW YORK.

&&

LAT...LON 4132 7399 4134 7383 4111 7370 4110 7372
      4109 7372 4102 7419 4109 7424 4113 7421
      4116 7428 4119 7430
TIME...MOT...LOC 2046Z 257DEG 13KT 4116 7405

$$
LN
2 follow-up statements
488 
WWUS51 KOKX 222058
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
458 PM EDT FRI JUN 22 2012

NJC003-NYC071-087-119-222130-
/O.CON.KOKX.SV.W.0013.000000T0000Z-120622T2130Z/
ORANGE NY-ROCKLAND NY-BERGEN NJ-WESTCHESTER NY-
458 PM EDT FRI JUN 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR WESTCHESTER...NORTHWESTERN BERGEN...ROCKLAND AND SOUTHEASTERN
ORANGE COUNTIES...

AT 455 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED NEAR SPRING VALLEY...MOVING EAST AT 15 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM FRIDAY
EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND
SOUTHEAST NEW YORK.

&&

LAT...LON 4132 7399 4134 7383 4111 7370 4110 7372
      4109 7372 4102 7419 4109 7424 4113 7421
      4116 7428 4119 7430
TIME...MOT...LOC 2058Z 257DEG 13KT 4117 7399

$$

LN
605 
WWUS51 KOKX 222120
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
520 PM EDT FRI JUN 22 2012

NJC003-NYC071-087-119-222130-
/O.CAN.KOKX.SV.W.0013.000000T0000Z-120622T2130Z/
ORANGE NY-ROCKLAND NY-BERGEN NJ-WESTCHESTER NY-
520 PM EDT FRI JUN 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR WESTCHESTER...NORTHWESTERN 
BERGEN...NORTHERN ROCKLAND AND SOUTHEASTERN ORANGE COUNTIES IS 
CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM FRIDAY
EVENING FOR SOUTHERN CONNECTICUT AND NORTHEAST NEW JERSEY AND
SOUTHEAST NEW YORK.

LAT...LON 4132 7399 4134 7383 4111 7370 4110 7372
      4109 7372 4102 7419 4109 7424 4113 7421
      4116 7428 4119 7430
TIME...MOT...LOC 2120Z 257DEG 13KT 4119 7389

$$

LN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 2:08 PM EDTSevere Thunderstorm WarningOKXHudson37 min
Jun 22, 4:04 PM EDTSevere Thunderstorm WarningOKXBergen, Passaic41 min
Jun 22, 5:08 PM EDTSevere Thunderstorm WarningOKXBergen36 min
Jun 22, 5:43 PM EDTSpecial Weather StatementOKXBergen, Essex, Hudson, Passaic, Union62 min
Jun 22, 1:51 PM EDTSpecial Marine WarningOKX24 min
Jun 22, 1:55 PM EDTFlash Flood WarningOKXRichmond56 min
Jun 22, 1:56 PM EDTSevere Thunderstorm WarningOKXNassau49 min
Jun 22, 2:16 PM EDTAreal Flood AdvisoryOKXBronx, Kings, Nassau, New York, Queens, Suffolk and 1 more89 min
Jun 22, 2:22 PM EDTSpecial Marine WarningOKX23 min
Jun 22, 2:31 PM EDTSpecial Marine WarningOKX61 min
Jun 22, 2:55 PM EDTSpecial Weather StatementOKXNassau35 min
Jun 22, 3:00 PM EDTSpecial Weather StatementOKXNassau60 min
Jun 22, 3:57 PM EDTSpecial Weather StatementOKXRockland63 min
Jun 22, 5:27 PM EDTSpecial Marine WarningOKX35 min
Jun 22, 5:58 PM EDTSpecial Marine WarningOKX47 min

Nearby

Severe Thunderstorm Warnings in New York, 2012Severe Thunderstorm Warnings in New Jersey, 2012Every severe thunderstorm warning 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.