Alert archive / New York / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 79, NWS Buffalo, NY

September 17, 20164 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 17, 2016, 6:13 PM EDT for 4 counties in New York. It was in force for 47 min. 1 report 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
Sep 17, 2016, 6:13 PM EDT (22:13 UTC)
Expired
Sep 17, 2016, 7:00 PM EDT
In force
47 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Erie County, NY, Genesee County, NY, Niagara County, NY, Orleans County, NY

The radar

The Buffalo radar (KBUF), 34 km from the middle of the area, began a volume at 22:13 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
Sep 17, 6:20 PM EDTTSTM WND DMG2 S Corfu, NYTREE DOWN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 10.2 hours before the alert went out and 31 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.

544 
WUUS51 KBUF 172213
SVRBUF
NYC029-037-063-073-172300-
/O.NEW.KBUF.SV.W.0079.160917T2213Z-160917T2300Z/

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

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ERIE COUNTY IN WESTERN NEW YORK...
  SOUTHEASTERN NIAGARA COUNTY IN WESTERN NEW YORK...
  GENESEE COUNTY IN WESTERN NEW YORK...
  SOUTHERN ORLEANS COUNTY IN WESTERN NEW YORK...

* UNTIL 700 PM EDT.

* AT 613 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER PEMBROKE...OR
  7 MILES NORTH OF DARIEN LAKES STATE PARK...MOVING EAST AT 55 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

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

* LOCATIONS IMPACTED INCLUDE...
  BATAVIA...DARIEN LAKES STATE PARK...LE ROY...PEMBROKE...AKRON...ALDEN...
  BYRON AND OAKFIELD.

THIS INCLUDES INTERSTATE 90 BETWEEN EXITS 48A AND 48.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURE'S LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

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

&&

LAT...LON 4289 7855 4312 7854 4326 7801 4289 7800
TIME...MOT...LOC 2213Z 249DEG 48KT 4303 7841 

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

RSH
2 follow-up statements
679 
WWUS51 KBUF 172230
SVSBUF

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

NYC029-063-172240-
/O.CAN.KBUF.SV.W.0079.000000T0000Z-160917T2300Z/
ERIE NY-NIAGARA NY-
630 PM EDT SAT SEP 17 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ERIE AND
SOUTHEASTERN NIAGARA COUNTIES IS CANCELLED...

THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF
THE WARNED AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED.

LAT...LON 4289 7834 4318 7830 4326 7801 4289 7800
TIME...MOT...LOC 2230Z 249DEG 41KT 4325 7821 4309 7817 4293 7825 

$$

NYC037-073-172300-
/O.CON.KBUF.SV.W.0079.000000T0000Z-160917T2300Z/
GENESEE NY-ORLEANS NY-
630 PM EDT SAT SEP 17 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR CENTRAL GENESEE AND SOUTHEASTERN ORLEANS COUNTIES...

AT 630 PM EDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM ALBION TO NEAR OAKFIELD TO NEAR ATTICA...MOVING EAST AT
45 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
BATAVIA...LE ROY...BYRON...OAKFIELD...HOLLEY...CLARENDON...STAFFORD AND
ELBA.

THIS INCLUDES INTERSTATE 90 NEAR EXIT 48.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

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

&&

LAT...LON 4289 7834 4318 7830 4326 7801 4289 7800
TIME...MOT...LOC 2230Z 249DEG 41KT 4325 7821 4309 7817 4293 7825 

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

RSH
550 
WWUS51 KBUF 172252
SVSBUF

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

NYC037-073-172301-
/O.EXP.KBUF.SV.W.0079.000000T0000Z-160917T2300Z/
GENESEE NY-ORLEANS NY-
652 PM EDT SAT SEP 17 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL GENESEE AND
SOUTHEASTERN ORLEANS COUNTIES WILL EXPIRE AT 700 PM EDT...
            
THE STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER GUSTY
WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THESE THUNDERSTORMS.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR
THE FAR EASTERN PORTION OF THE COUNTY.

LAT...LON 4289 7834 4318 7830 4326 7801 4289 7800
TIME...MOT...LOC 2249Z 249DEG 48KT 4325 7821 4309 7817 4293 7825 

$$

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, 6:36 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, 7:30 PM EDTSevere Thunderstorm WarningBUFLivingston, Monroe, Ontario, Wayne60 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.