Alert archive / New York / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 42, NWS New York, NY

July 19, 20105 counties in New York; Bergen County, Passaic County, New Jersey

NWS New York, NY issued this severe thunderstorm warning at Jul 19, 2010, 6:03 PM EDT for 5 counties in New York; Bergen County, Passaic County, New Jersey. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 19, 2010, 6:03 PM EDT (22:03 UTC)
Expired
Jul 19, 2010, 7:00 PM EDT
In force
57 min
Issued by
NWS New York, NY
Area
Storm-based polygon

Counties Bergen County, NJ, Passaic County, NJ, Bronx County, NY, New York County, NY, 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 22:05 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.1 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 2010-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 306 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2010-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 220 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
306 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
1354 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
220 m²/s²
0-3 km storm-relative helicity
261 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS New York, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 19, 5:30 PM EDT, 33 minutes earlier.

Area forecast discussion, Jul 19, 5:30 PM EDT, 33 minutes before
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Hazardous weather outlook, Jul 19, 4:51 PM EDT, 1 hour 12 minutes before
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In the hours before

Local storm report, Jul 19, 2:10 PM EDT, 3 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NEW YORK NY
210 PM EDT MON JUL 19 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 AM     MARINE TSTM WIND 4 SSE NEW HAVEN         41.25N 72.90W
07/19/2010  M40.00 MPH       ANZ330             CT   BUOY

            35 KT WIND GUST.

1028 AM     LIGHTNING        OLD SAYBROOK            41.29N 72.37W
07/19/2010                   MIDDLESEX          CT   BROADCAST MEDIA

            MINOR DAMAGE TO 2 HOUSES.

1028 AM     LIGHTNING        ESSEX                   41.36N 72.40W
07/19/2010                   MIDDLESEX          CT   BROADCAST MEDIA

            HOUSE FIRE DUE TO LIGHTNING.

1047 AM     TSTM WND DMG     LEDYARD CENTER          41.47N 72.03W
07/19/2010                   NEW LONDON         CT   LAW ENFORCEMENT

            NUMEROUS TREES AND WIRES DOWN.

1058 AM     MARINE TSTM WIND 15 S ATLANTIC BEACH     40.37N 73.70W
07/19/2010  E41.00 MPH       ANZ355             NY   BUOY

            36 KT WIND GUST.

1112 AM     MARINE TSTM WIND 1 S LONG BEACH          40.58N 73.67W
07/19/2010  E40.00 MPH       ANZ355             NY   TRAINED SPOTTER

            35 KT WIND GUST.

1130 AM     MARINE TSTM WIND 6 SW BABYLON            40.63N 73.39W
07/19/2010  E42.00 MPH       ANZ345             NY   MESONET

            37 KT WIND GUST.

1135 AM     MARINE TSTM WIND 1 WSW ROBERT MOSES STAT 40.62N 73.26W
07/19/2010  E39.00 MPH       SUFFOLK            NY   MESONET

            34 KT WIND GUST.

&&

JOE
Local storm report, Jul 19, 2:17 PM EDT, 3 hours 46 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NEW YORK NY
217 PM EDT MON JUL 19 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0903 AM     TSTM WND DMG     MAHOPAC                 41.37N 73.74W
07/19/2010                   PUTNAM             NY   TRAINED SPOTTER

            DOWNED TREE.

0945 AM     MARINE TSTM WIND 4 SSE NEW HAVEN         41.25N 72.90W
07/19/2010  M40.00 MPH       ANZ330             CT   BUOY

            35 KT WIND GUST.

1028 AM     LIGHTNING        ESSEX                   41.36N 72.40W
07/19/2010                   MIDDLESEX          CT   BROADCAST MEDIA

            HOUSE FIRE DUE TO LIGHTNING.

1028 AM     LIGHTNING        OLD SAYBROOK            41.29N 72.37W
07/19/2010                   MIDDLESEX          CT   BROADCAST MEDIA

            MINOR DAMAGE TO 2 HOUSES.

1047 AM     TSTM WND DMG     LEDYARD CENTER          41.47N 72.03W
07/19/2010                   NEW LONDON         CT   LAW ENFORCEMENT

            NUMEROUS TREES AND WIRES DOWN.

1058 AM     MARINE TSTM WIND 15 S ATLANTIC BEACH     40.37N 73.70W
07/19/2010  E41.00 MPH       ANZ355             NY   BUOY

            36 KT WIND GUST.

1112 AM     MARINE TSTM WIND 1 S LONG BEACH          40.58N 73.67W
07/19/2010  E40.00 MPH       ANZ355             NY   TRAINED SPOTTER

            35 KT WIND GUST.

1130 AM     MARINE TSTM WIND 6 SW BABYLON            40.63N 73.39W
07/19/2010  E42.00 MPH       ANZ345             NY   MESONET

            37 KT WIND GUST.

1131 AM     MARINE TSTM WIND 5 WSW BABYLON           40.66N 73.40W
07/19/2010  M43.00 MPH       ANZ345             NY   MESONET

            37 KT GUST.

1135 AM     MARINE TSTM WIND 1 WSW ROBERT MOSES STAT 40.62N 73.26W
07/19/2010  E39.00 MPH       SUFFOLK            NY   MESONET

            34 KT WIND GUST.

&&

JOE
Special weather statement, Jul 19, 3:01 PM EDT, 3 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
301 PM EDT MON JUL 19 2010

NYZ067-068-192000-
ORANGE-PUTNAM-
301 PM EDT MON JUL 19 2010

...STRONG THUNDERSTORM WILL IMPACT NORTHEASTERN ORANGE AND PUTNAM
COUNTIES...

AT 257 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR PHILLIPSPORT...OR NEAR ELLENVILLE...AND
MOVING SOUTHEAST AT 30 MPH.

THIS STORM WILL BE...
  NEAR WALDEN BY 320 PM.
  NEAR GARDNERTOWN BY 335 PM.
  NEAR NEWBURGH BY 340 PM.
  5 MILES NORTHEAST OF COLD SPRING BY 350 PM.
  NEAR FAHNESTOCK STATE PARK BY 400 PM.

SMALL HAIL...AND WINDS UP TO 40 MPH ARE EXPECTED WITH THIS STORM.

LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE
TO SAFE SHELTER IMMEDIATELY.

LAT...LON 4160 7438 4164 7426 4161 7424 4159 7414
      4162 7413 4162 7410 4159 7405 4159 7396
      4157 7396 4151 7399 4145 7398 4150 7392
      4152 7362 4135 7372 4133 7387 4155 7443

DSW
Special weather statement, Jul 19, 3:52 PM EDT, 2 hours 11 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
352 PM EDT MON JUL 19 2010

CTZ005-006-NYZ067-068-070-192045-
NORTHERN FAIRFIELD-NORTHERN NEW HAVEN-NORTHERN
WESTCHESTER-ORANGE-PUTNAM-
352 PM EDT MON JUL 19 2010

...STRONG THUNDERSTORMS WILL IMPACT NORTHERN FAIRFIELD...NORTHERN
ORANGE...NORTHERN WESTCHESTER...PUTNAM AND WESTERN NEW HAVEN
COUNTIES...

AT 346 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM HOPEWELL JUNCTION TO
FISHKILL TO MIDDLETOWN...OR ALONG A LINE EXTENDING FROM 10 MILES WEST
OF PAWLING TO BEACON TO MIDDLETOWN...AND MOVING EAST AT 35 MPH.

THESE STORMS WILL BE...
  NEAR NEW WINDSOR BY 400 PM.
  NEAR SHERMAN BY 415 PM.
  NEAR WEST POINT BY 420 PM.
  NEAR CARMEL BY 430 PM.
  NEAR BREWSTER BY 435 PM.
  NEAR NEWTOWN BY 440 PM.

PEOPLE IN FAIRFIELD...NORTHERN ORANGE...NORTHERN WESTCHESTER...PUTNAM
AND WESTERN NEW HAVEN COUNTIES...INCLUDING NEWBURGH...GARDNERTOWN...
MONTGOMERY...NEW WINDSOR...FAHNESTOCK STATE PARK...SHERMAN...LAKE
CARMEL...COLD SPRING...WEST POINT AND CARMEL...SHOULD MONITOR THE
WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE WARNINGS AND BE
PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE WEATHER THREATEN.

SMALL HAIL AND GUSTY WINDS UP TO 45 MPH ARE EXPECTED WITH
THESE STORMS.

LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE
TO SAFE SHELTER IMMEDIATELY.

LAT...LON 4161 7423 4159 7414 4162 7410 4159 7405
      4158 7396 4151 7399 4145 7398 4150 7392
      4153 7354 4160 7353 4159 7347 4151 7343
      4152 7339 4148 7334 4151 7333 4153 7317
      4147 7288 4137 7312 4127 7386 4147 7456

GOODMAN
Special weather statement, Jul 19, 4:32 PM EDT, 1 hour 31 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
432 PM EDT MON JUL 19 2010

CTZ005-009-NYZ070-192130-
NORTHERN FAIRFIELD-NORTHERN WESTCHESTER-SOUTHERN FAIRFIELD-
432 PM EDT MON JUL 19 2010

...STRONG THUNDERSTORM WILL IMPACT FAIRFIELD AND WESTCHESTER
COUNTIES...

AT 431 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR CARMEL...OR NEAR BREWSTER...AND MOVING
SOUTHEAST AT 20 MPH.

THIS STORM WILL BE...
  NEAR DANBURY BY 455 PM.
  6 MILES NORTHEAST OF RIDGEFIELD BY 500 PM.
  NEAR BETHEL BY 505 PM.
  5 MILES NORTHEAST OF GEORGETOWN BY 510 PM.
  NEAR TRUMBULL BY 530 PM.

PEOPLE IN FAIRFIELD AND WESTCHESTER COUNTIES...INCLUDING DANBURY...
BETHEL AND TRUMBULL...SHOULD MONITOR THE WEATHER SITUATION CLOSELY.
LISTEN FOR POSSIBLE WARNINGS AND BE PREPARED TO TAKE APPROPRIATE
ACTION SHOULD SEVERE WEATHER THREATEN.

FREQUENT CLOUD TO GROUND LIGHTNING...SMALL HAIL...AND GUSTY WINDS UP
TO 50 MPH ARE EXPECTED WITH THIS STORM.

LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE
TO SAFE SHELTER IMMEDIATELY.

LAT...LON 4138 7315 4134 7313 4130 7307 4115 7315
      4117 7317 4114 7320 4114 7322 4112 7324
      4130 7371 4134 7376 4136 7355 4146 7354
      4149 7353

GOODMAN
Special weather statement, Jul 19, 5:47 PM EDT, 16 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 3:42 AM EDTSmall Craft Advisory for Hazardous SeasOKX43 hr
Jul 19, 4:58 AM EDTCoastal Flood StatementOKXKings, Suffolk16 hr
Jul 19, 8:11 AM EDTSevere Thunderstorm WarningOKXOrange, Rockland34 min
Jul 19, 8:28 AM EDTSpecial Weather StatementOKXBronx, New York32 min
Jul 19, 8:29 AM EDTSevere Thunderstorm WarningOKXPutnam, Westchester46 min
Jul 19, 9:23 AM EDTSpecial Marine WarningOKX52 min
Jul 19, 10:42 AM EDTSpecial Marine WarningOKX63 min
Jul 19, 10:55 AM EDTSpecial Marine WarningOKX35 min
Jul 19, 11:36 AM EDTSevere Thunderstorm WarningOKXSuffolk39 min
Jul 19, 11:49 AM EDTSpecial Marine WarningOKX26 min
Jul 19, 3:01 PM EDTSpecial Weather StatementOKXPutnam59 min
Jul 19, 3:09 PM EDTSevere Thunderstorm WarningOKXOrange, Putnam51 min
Jul 19, 3:52 PM EDTSpecial Weather StatementOKXOrange, Putnam53 min
Jul 19, 4:10 PM EDTSevere Thunderstorm WarningOKXOrange, Putnam50 min
Jul 19, 4:28 PM EDTAreal Flood AdvisoryOKXOrange, Putnam107 min
Jul 19, 4:41 PM EDTSevere Thunderstorm WarningOKXPutnam64 min
Jul 19, 4:43 PM EDTFlash Flood WarningOKXOrange, Putnam3 hr
Jul 19, 4:52 PM EDTSevere Thunderstorm WarningOKXOrange, Putnam, Rockland, Westchester53 min
Jul 19, 5:11 PM EDTSpecial Marine WarningOKX34 min
Jul 19, 5:26 PM EDTSpecial Marine WarningOKX64 min
Jul 19, 5:47 PM EDTSpecial Weather StatementOKXRockland, Westchester58 min
Jul 19, 6:58 PM EDTAreal Flood AdvisoryOKXRockland, Westchester62 min
Jul 19, 6:59 PM EDTSpecial Marine WarningOKX61 min
Jul 19, 7:21 PM EDTSevere Thunderstorm WarningOKXNassau, Suffolk, Westchester39 min
Jul 19, 7:25 PM EDTSpecial Weather StatementOKXSuffolk65 min
Jul 19, 7:41 PM EDTSpecial Weather StatementOKXNassau, Suffolk64 min
Jul 19, 7:48 PM EDTSevere Thunderstorm WarningOKXSuffolk29 min
Jul 19, 7:54 PM EDTSpecial Marine WarningOKX66 min
Jul 19, 9:15 AM EDTSpecial Weather StatementOKX45 min
Jul 19, 10:15 AM EDTSpecial Weather StatementOKX60 min
Jul 19, 11:08 AM EDTSpecial Weather StatementOKX37 min
Jul 19, 11:14 AM EDTAreal Flood AdvisoryOKXSoutheastern Connecticut Planning Region91 min
Jul 19, 11:55 AM EDTSpecial Weather StatementOKX65 min
Jul 19, 4:32 PM EDTSpecial Weather StatementOKX58 min
Jul 19, 5:25 PM EDTSevere Thunderstorm WarningOKXGreater Bridgeport Planning Region, Naugatuck Valley Planning Region65 min
Jul 19, 7:43 AM EDTSpecial Weather StatementOKXBergen, Essex, Hudson, Passaic, Union47 min

Nearby

Severe Thunderstorm Warnings in New York, 2010Severe Thunderstorm Warnings in New Jersey, 2010Every severe thunderstorm warning in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.