Alert archive / New York / Tornado Warnings in 2018

Tornado Warning 4, NWS New York, NY

August 2, 2018Bronx County, Nassau County, Queens County, New York

NWS New York, NY issued this tornado warning at Aug 2, 2018, 10:18 PM EDT for Bronx County, Nassau County, Queens County, New York. It was in force for 27 min. 2 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
Aug 2, 2018, 10:18 PM EDT (02:18 UTC)
Expired
Aug 2, 2018, 10:45 PM EDT
In force
27 min
Issued by
NWS New York, NY
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Bronx County, NY, Nassau County, NY, Queens County, NY

The radar

The Brookhaven radar (KOKX), 74 km from the middle of the area, began a volume at 02:22 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
Aug 2, 10:20 PM EDTTSTM WND DMG1 Ne Malba, NYMULTIPLE TREES DOWN IN THE AREA OF 3RD AVENUE AND 147TH STREET.
Aug 2, 10:20 PM EDTTORNADOCollege Point, NYSTORM SURVEY TEAM CONFIRMED AN EF0 TORNADO WITH ESTIMATED PEAK WINDS OF 70 TO 85 MPH ALONG A THREE QUARTER MILE LONG AND 100 YARD WIDE PATH FROM COLLEGE POINT TO MALBA.

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 00:00Z, 2.3 hours before the alert went out and 74 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 00:00Z on 2018-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1316 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 00:00Z on 2018-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 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
1316 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
752 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.1

Open this sounding in Storm Lab

The text

As transmitted.

971 
WFUS51 KOKX 030218
TOROKX
NYC005-059-081-030245-
/O.NEW.KOKX.TO.W.0004.180803T0218Z-180803T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New York NY
1018 PM EDT THU AUG 2 2018

The National Weather Service in Upton NY has issued a

* Tornado Warning for...
  Queens County in southeastern New York...
  Bronx County in southeastern New York...
  Northern Nassau County in southeastern New York...

* Until 1045 PM EDT.
    
* At 1018 PM EDT, a severe thunderstorm capable of producing a
  tornado was located over Whitestone, or over Flushing, moving east
  at 20 mph.

  HAZARD...Tornado.

  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...
  Bayside around 1025 PM EDT.
  Great Neck and City Island around 1030 PM EDT.
  Garden City and Port Washington around 1040 PM EDT.
  Glen Cove and Mineola around 1045 PM EDT.

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 or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4083 7394 4084 7393 4086 7392 4089 7383
      4088 7378 4087 7377 4087 7376 4085 7376
      4084 7375 4087 7374 4088 7371 4086 7366
      4088 7366 4091 7364 4091 7362 4092 7357
      4092 7354 4073 7346 4072 7387
TIME...MOT...LOC 0218Z 252DEG 17KT 4079 7383 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JMC
2 follow-up statements
159 
WWUS51 KOKX 030232
SVSOKX

Severe Weather Statement
National Weather Service New York NY
1032 PM EDT THU AUG 2 2018

NYC005-081-030242-
/O.CAN.KOKX.TO.W.0004.000000T0000Z-180803T0245Z/
Queens NY-Bronx NY-
1032 PM EDT THU AUG 2 2018

...THE TORNADO WARNING FOR QUEENS AND BRONX COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 4074 7370 4075 7370 4078 7375 4078 7376
      4081 7377 4083 7377 4084 7375 4086 7374
      4087 7374 4087 7373 4088 7371 4086 7366
      4088 7366 4091 7364 4091 7362 4092 7357
      4092 7354 4073 7346 4072 7372
TIME...MOT...LOC 0232Z 249DEG 18KT 4085 7374 

$$

NYC059-030245-
/O.CON.KOKX.TO.W.0004.000000T0000Z-180803T0245Z/
Nassau NY-
1032 PM EDT THU AUG 2 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT FOR NORTHERN
NASSAU COUNTY...
    
At 1032 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Sands Point, or near Great Neck, moving east at 20
mph.

HAZARD...Tornado.

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...
  Manhasset and Sands Point around 1035 PM EDT.
  Port Washington around 1040 PM EDT.
  Glen Cove and Oyster Bay around 1045 PM EDT.

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 or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4074 7370 4075 7370 4078 7375 4078 7376
      4081 7377 4083 7377 4084 7375 4086 7374
      4087 7374 4087 7373 4088 7371 4086 7366
      4088 7366 4091 7364 4091 7362 4092 7357
      4092 7354 4073 7346 4072 7372
TIME...MOT...LOC 0232Z 249DEG 18KT 4085 7374 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JMC
897 
WWUS51 KOKX 030242
SVSOKX

Severe Weather Statement
National Weather Service New York NY
1042 PM EDT THU AUG 2 2018

NYC059-030251-
/O.EXP.KOKX.TO.W.0004.000000T0000Z-180803T0245Z/
Nassau NY-
1042 PM EDT THU AUG 2 2018

...THE TORNADO WARNING FOR NORTHERN NASSAU COUNTY WILL EXPIRE AT 1045
PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

LAT...LON 4074 7370 4075 7370 4078 7375 4078 7376
      4081 7377 4083 7377 4084 7375 4086 7374
      4087 7374 4087 7373 4088 7371 4086 7366
      4088 7366 4091 7364 4091 7362 4092 7357
      4092 7354 4073 7346 4072 7372
TIME...MOT...LOC 0241Z 252DEG 17KT 4086 7371 

$$

JMC

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 10:24 PM EDTSpecial Marine WarningOKX51 min
Aug 3, 2:13 PM EDTSpecial Marine WarningOKX47 min
Aug 3, 2:19 PM EDTAreal Flood AdvisoryOKXBronx, Kings, New York, Queens, Richmond116 min
Aug 3, 2:47 PM EDTSpecial Weather StatementOKXBronx, Kings, Nassau, New York, Orange, Queens and 2 more43 min
Aug 3, 2:59 PM EDTSpecial Marine WarningOKX46 min
Aug 3, 3:06 PM EDTFlash Flood WatchOKXBronx, Kings, Nassau, New York, Orange, Putnam and 5 more22 hr
Aug 3, 3:12 PM EDTSevere Thunderstorm WarningOKXOrange, Putnam, Rockland, Westchester63 min
Aug 3, 3:15 PM EDTAreal Flood AdvisoryOKXOrange, Putnam, Rockland, Westchester2 hr
Aug 3, 3:43 PM EDTSevere Thunderstorm WarningOKXOrange, Putnam32 min
Aug 3, 3:49 PM EDTSpecial Weather StatementOKXPutnam41 min
Aug 3, 7:16 PM EDTSpecial Weather StatementOKXOrange44 min
Aug 3, 7:47 PM EDTAreal Flood AdvisoryOKXOrange88 min

Nearby

Tornado Warnings in New York, 2018Every tornado warning in 2018Tornadoes in 2018

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.