Alert archive / New York / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 82, NWS Buffalo, NY

September 17, 20164 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 17, 2016, 7:30 PM EDT for 4 counties in New York. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 17, 2016, 7:30 PM EDT (23:30 UTC)
Expired
Sep 17, 2016, 8:30 PM EDT
In force
60 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Livingston County, NY, Monroe County, NY, Ontario County, NY, Wayne County, NY

The radar

The Buffalo radar (KBUF), 89 km from the middle of the area, began a volume at 23:30 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.5 hours before the alert went out and 85 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, Buffalo Intl Airport, NY at 12:00Z on 2016-09-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 48 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, Buffalo Intl Airport, NY at 12:00Z on 2016-09-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 226 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
48 J/kg
Mixed-layer CIN
-304 J/kg
Mixed-layer LCL
980 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
226 m²/s²
0-3 km storm-relative helicity
222 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

869 
WUUS51 KBUF 172330
SVRBUF
NYC051-055-069-117-180030-
/O.NEW.KBUF.SV.W.0082.160917T2330Z-160918T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
730 PM EDT SAT SEP 17 2016

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN ONTARIO COUNTY IN WESTERN NEW YORK...
  NORTHEASTERN LIVINGSTON COUNTY IN WESTERN NEW YORK...
  SOUTHWESTERN WAYNE COUNTY IN WESTERN NEW YORK...
  SOUTHERN MONROE COUNTY IN WESTERN NEW YORK...

* UNTIL 830 PM EDT.

* AT 729 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR GENESEO...
  MOVING EAST AT 45 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  CANANDAIGUA...GENESEO...EAST ROCHESTER...FAIRPORT...HENRIETTA...PALMYRA...
  AVON AND VICTOR.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 390 BETWEEN EXITS 8 AND 12.
 INTERSTATE 90 BETWEEN EXITS 46 AND 44.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4280 7793 4303 7790 4314 7724 4284 7725
TIME...MOT...LOC 2329Z 254DEG 38KT 4287 7788 

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

RSH
2 follow-up statements
714 
WWUS51 KBUF 180000
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
800 PM EDT SAT SEP 17 2016

NYC051-180009-
/O.CAN.KBUF.SV.W.0082.000000T0000Z-160918T0030Z/
LIVINGSTON NY-
800 PM EDT SAT SEP 17 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LIVINGSTON COUNTY
IS CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF 
THE WARNED AREA. THEREFORE...THE WARNING FOR LIVINGSTON COUNTY HAS 
BEEN CANCELLED.

LAT...LON 4284 7752 4309 7753 4314 7724 4284 7725
TIME...MOT...LOC 2359Z 255DEG 45KT 4300 7739 

$$

NYC055-069-117-180030-
/O.CON.KBUF.SV.W.0082.000000T0000Z-160918T0030Z/
ONTARIO NY-WAYNE NY-MONROE NY-
800 PM EDT SAT SEP 17 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR NORTHWESTERN ONTARIO...SOUTHWESTERN WAYNE AND SOUTHEASTERN MONROE
COUNTIES...

AT 759 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER VICTOR...OR 7
MILES SOUTH OF FAIRPORT...MOVING EAST AT 50 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
CANANDAIGUA...FAIRPORT...PALMYRA...VICTOR...BRISTOL...BLOOMFIELD...
FARMINGTON AND MENDON.

THIS INCLUDES INTERSTATE 90 BETWEEN EXITS 45 AND 44.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4284 7752 4309 7753 4314 7724 4284 7725
TIME...MOT...LOC 2359Z 255DEG 45KT 4300 7739 

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

RSH
806 
WWUS51 KBUF 180022
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
822 PM EDT SAT SEP 17 2016

NYC055-069-117-180032-
/O.EXP.KBUF.SV.W.0082.000000T0000Z-160918T0030Z/
ONTARIO NY-WAYNE NY-MONROE NY-
822 PM EDT SAT SEP 17 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN ONTARIO...
SOUTHWESTERN WAYNE AND SOUTHEASTERN MONROE COUNTIES WILL EXPIRE AT
830 PM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND HAS EXITED THE WARNED AREA. THEREFORE...THE WARNING WILL
BE ALLOWED TO EXPIRE.

LAT...LON 4284 7752 4309 7753 4314 7724 4284 7725
TIME...MOT...LOC 0014Z 254DEG 38KT 4300 7739 

$$

RSH

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 16, 10:21 PM EDTBeach Hazards StatementBUFJefferson25 hr
Sep 17, 4:48 AM EDTSmall Craft AdvisoryBUF26 hr
Sep 17, 11:30 AM EDTSpecial Weather StatementBUFChautauqua45 min
Sep 17, 4:36 PM EDTSpecial Marine WarningBUF54 min
Sep 17, 5:22 PM EDTSevere Thunderstorm WarningBUFChautauqua38 min
Sep 17, 5:28 PM EDTSpecial Marine WarningBUF62 min
Sep 17, 6:00 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua, Erie45 min
Sep 17, 6:13 PM EDTSevere Thunderstorm WarningBUFErie, Genesee, Niagara, Orleans47 min
Sep 17, 6:36 PM EDTTornado WarningBUFCattaraugus24 min
Sep 17, 6:37 PM EDTSevere Thunderstorm WarningBUFGenesee, Livingston, Monroe, Ontario, Orleans53 min
Sep 17, 6:42 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Chautauqua, Erie, Genesee, Wyoming48 min
Sep 17, 6:56 PM EDTSpecial Marine WarningBUF94 min
Sep 17, 7:00 PM EDTTornado WarningBUFCattaraugus30 min
Sep 17, 7:50 PM EDTSpecial Marine WarningBUF55 min

Nearby

Severe Thunderstorm Warnings in New York, 2016Every severe thunderstorm warning in 2016

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.