Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 21, NWS New York, NY

June 24, 2013Orange County, Putnam County, Westchester County, New York; Greater Bridgeport Planning Region, Connecticut

NWS New York, NY issued this severe thunderstorm warning at Jun 24, 2013, 6:45 PM EDT for Orange County, Putnam County, Westchester County, New York; Greater Bridgeport Planning Region, Connecticut. It was in force for 60 min. 5 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 24, 2013, 6:45 PM EDT (22:45 UTC)
Expired
Jun 24, 2013, 7:45 PM EDT
In force
60 min
Issued by
NWS New York, NY
Area
Storm-based polygon

Counties Greater Bridgeport Planning Region, CT, Orange County, NY, Putnam County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 98 km from the middle of the area, began a volume at 22:46 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 24, 6:47 PM EDTTSTM WND DMGKiryas Joel, NYTREE DOWN ON ACRES ROAD.
Jun 24, 7:12 PM EDTTSTM WND DMGLake Carmel, NYPOWER OUTAGES REPORTED.
Jun 24, 7:12 PM EDTTSTM WND DMGWoodbury, NYNUMEROUS TREES DOWNED.
Jun 24, 7:16 PM EDTTSTM WND DMG1 W Patterson, NYSOUTHBOUND LANE OF NY 292 BLOCKED AT PATTERSON VILLAGE COURT DUE TO FALLEN TREE. TIME ESTIMATED FROM RADAR.
Jun 24, 7:42 PM EDTTSTM WND DMGLake Carmel, NYPOWER OUTAGES REPORTED.

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, 10.8 hours before the alert went out and 98 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 2013-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 474 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 2013-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.1939Sfc1 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
474 J/kg
Mixed-layer CIN
-121 J/kg
Mixed-layer LCL
1185 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
48 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

789 
WUUS51 KOKX 242245
SVROKX
CTC001-NYC071-079-119-242345-
/O.NEW.KOKX.SV.W.0021.130624T2245Z-130624T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
645 PM EDT MON JUN 24 2013

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FAIRFIELD COUNTY IN SOUTHERN CONNECTICUT...
  NORTHERN WESTCHESTER COUNTY IN SOUTHEAST NEW YORK...
  PUTNAM COUNTY IN SOUTHEAST NEW YORK...
  EASTERN ORANGE COUNTY IN SOUTHEAST NEW YORK...

* UNTIL 745 PM EDT...

* AT 642 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
  WEST POINT...AND MOVING EAST AT 30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NEW
  WINDSOR...PEEKSKILL...COLD SPRING...FAHNESTOCK STATE PARK...
  MAHOPAC...CARMEL...LAKE CARMEL...BREWSTER...DANBURY...SHERMAN AND
  BETHEL

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4150 7344 4152 7339 4147 7332 4129 7332
      4127 7397 4129 7394 4132 7399 4127 7406
      4126 7416 4143 7420 4148 7400 4146 7399
      4145 7398 4149 7393 4153 7354 4161 7353
      4162 7349
TIME...MOT...LOC 2245Z 254DEG 27KT 4138 7401

$$

GOODMAN
3 follow-up statements
262 
WWUS51 KOKX 242324
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
724 PM EDT MON JUN 24 2013

CTC001-NYC071-079-119-242345-
/O.CON.KOKX.SV.W.0021.000000T0000Z-130624T2345Z/
ORANGE NY-PUTNAM NY-WESTCHESTER NY-FAIRFIELD CT-
724 PM EDT MON JUN 24 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR FAIRFIELD...NORTHERN WESTCHESTER...PUTNAM AND EAST CENTRAL ORANGE
COUNTIES...

AT 720 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM PUTNAM LAKE TO CARMEL TO PEEKSKILL...OR ALONG A LINE
EXTENDING FROM SHERMAN TO MAHOPAC TO PEEKSKILL...MOVING EAST AT 20
MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  BREWSTER BY 730 PM...
  JEFFERSON VALLEY-YORKTOWN BY 740 PM...
  PEACH LAKE AND 6 MILES NORTH OF GOLDENS BRIDGE BY 745 PM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING 
IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY! 
LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU 
CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. 

THESE STORMS HAVE A HISTORY OF PRODUCING DAMAGING WINDS. THESE ARE 
DANGEROUS STORMS...SEEK SAFE SHELTER AND STAY AWAY FROM WINDOWS. 

&&

LAT...LON 4150 7344 4152 7339 4147 7332 4129 7332
      4127 7397 4129 7394 4132 7399 4127 7406
      4126 7416 4143 7420 4148 7400 4146 7399
      4145 7398 4149 7393 4153 7354 4161 7353
      4162 7349
TIME...MOT...LOC 2323Z 258DEG 16KT 4151 7345 4138 7367
          4133 7392

$$

GOODMAN
237 
WWUS51 KOKX 242337
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
737 PM EDT MON JUN 24 2013

NYC071-242346-
/O.CAN.KOKX.SV.W.0021.000000T0000Z-130624T2345Z/
ORANGE NY-
737 PM EDT MON JUN 24 2013

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL ORANGE COUNTY IS
CANCELLED...

LAT...LON 4152 7345 4150 7343 4152 7339 4149 7337
      4147 7332 4129 7332 4127 7397 4129 7394
      4132 7398 4135 7396 4140 7395 4153 7354
TIME...MOT...LOC 2336Z 270DEG 18KT 4145 7355 4138 7364
          4130 7377

$$

CTC001-NYC079-119-242345-
/O.CON.KOKX.SV.W.0021.000000T0000Z-130624T2345Z/
PUTNAM NY-WESTCHESTER NY-FAIRFIELD CT-
737 PM EDT MON JUN 24 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR FAIRFIELD...NORTHERN WESTCHESTER AND PUTNAM COUNTIES...

AT 733 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE 
EXTENDING FROM PUTNAM LAKE TO CARMEL TO JEFFERSON VALLEY-YORKTOWN... 
OR ALONG A LINE EXTENDING FROM BREWSTER TO MAHOPAC...MOVING EAST AT 
20 MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  PEACH LAKE...GOLDENS BRIDGE...DANBURY AND 7 MILES NORTHWEST OF 
  BETHEL BY 745 PM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. 
MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE 
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH 
TO BE STRUCK BY LIGHTNING.

THESE STORMS HAVE A HISTORY OF PRODUCING DAMAGING WINDS. SEEK SAFE 
SHELTER AND STAY AWAY FROM WINDOWS!

&&

LAT...LON 4152 7345 4150 7343 4152 7339 4149 7337
      4147 7332 4129 7332 4127 7397 4129 7394
      4132 7398 4135 7396 4140 7395 4153 7354
TIME...MOT...LOC 2336Z 270DEG 18KT 4145 7355 4138 7364
          4130 7377

$$

GOODMAN
761 
WWUS51 KOKX 242347
SVSOKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
747 PM EDT MON JUN 24 2013

CTC001-NYC079-119-242356-
/O.EXP.KOKX.SV.W.0021.000000T0000Z-130624T2345Z/
PUTNAM NY-WESTCHESTER NY-FAIRFIELD CT-
747 PM EDT MON JUN 24 2013

...THE SEVERE THUNDERSTORM WARNING FOR FAIRFIELD...NORTHERN
WESTCHESTER AND PUTNAM COUNTIES HAS EXPIRED...

THUNDERSTORMS IN THE WARNED AREA HAVE WEAKENED...BUT REMAIN CAPABLE 
OF PRODUCING WIND GUSTS UP TO 45 MPH. 

LAT...LON 4152 7345 4150 7343 4152 7339 4149 7337
      4147 7332 4129 7332 4127 7397 4129 7394
      4132 7398 4135 7396 4140 7395 4153 7354
TIME...MOT...LOC 2337Z 270DEG 18KT 4145 7354 4138 7363
          4130 7376

$$

GOODMAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 4:02 AM EDTHeat AdvisoryOKXBronx, Kings, New York, Queens, Richmond38 hr
Jun 24, 7:12 AM EDTMarine Dense Fog AdvisoryOKX3 hr
Jun 24, 1:02 PM EDTSpecial Weather StatementOKXBronx, Nassau58 min
Jun 24, 1:33 PM EDTSevere Thunderstorm WarningOKXNassau, Suffolk42 min
Jun 24, 2:22 PM EDTAreal Flood AdvisoryOKXNassau83 min
Jun 24, 5:10 PM EDTSpecial Weather StatementOKXPutnam35 min
Jun 24, 5:44 PM EDTSpecial Weather StatementOKXDutchess31 min
Jun 24, 6:04 PM EDTSpecial Weather StatementOKXOrange56 min
Jun 24, 6:19 PM EDTSevere Thunderstorm WarningOKXOrange, Rockland41 min
Jun 24, 6:54 PM EDTAreal Flood AdvisoryOKXOrange, Putnam81 min
Jun 24, 7:10 PM EDTFlash Flood WarningOKXOrange95 min
Jun 24, 7:45 PM EDTSpecial Weather StatementOKXWestchester60 min
Jun 24, 7:58 PM EDTSpecial Marine WarningOKX62 min
Jun 24, 6:23 PM EDTSpecial Weather StatementOKX67 min

Nearby

Severe Thunderstorm Warnings in New York, 2013Severe Thunderstorm Warnings in Connecticut, 2013Every severe thunderstorm warning in 2013

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.