Alert archive / New York / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 38, NWS Buffalo, NY

July 25, 2016Livingston County, Ontario County, Wyoming County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 25, 2016, 8:40 AM EDT for Livingston County, Ontario County, Wyoming County, New York. It was in force for 35 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
Jul 25, 2016, 8:40 AM EDT (12:40 UTC)
Expired
Jul 25, 2016, 9:15 AM EDT
In force
35 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Livingston County, NY, Ontario County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 92 km from the middle of the area, began a volume at 12:43 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
Jul 25, 9:15 AM EDTTSTM WND DMG1 N Naples, NYTREE ON POWERLINE NEAR INTERSECTION OF ROUTES 21 AND 245
Jul 25, 9:16 AM EDTTSTM WND DMG2 S Naples, NYTREE ON POWERLINE NEAR INTERSECTION OF ROUTES 21 AND 245

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, 0.7 hours before the alert went out and 88 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 2016-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1065 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, Buffalo Intl Airport, NY at 12:00Z on 2016-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 184 square meters per square second.19395878Sfc1 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
1065 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
907 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
184 m²/s²
0-3 km storm-relative helicity
203 m²/s²
Significant tornado parameter
0.9
Supercell composite
8.7

Open this sounding in Storm Lab

The text

As transmitted.

238 
WUUS51 KBUF 251240
SVRBUF
NYC051-069-121-251315-
/O.NEW.KBUF.SV.W.0038.160725T1240Z-160725T1315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
840 AM EDT MON JUL 25 2016

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN ONTARIO COUNTY IN WESTERN NEW YORK...
  CENTRAL LIVINGSTON COUNTY IN WESTERN NEW YORK...
  NORTHEASTERN WYOMING COUNTY IN WESTERN NEW YORK...

* UNTIL 915 AM EDT

* AT 840 AM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER PERRY...OR
  NEAR LETCHWORTH 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...
  GENESEO...DANSVILLE...LETCHWORTH STATE PARK...PERRY...WARSAW...MOUNT
  MORRIS...CONESUS AND NAPLES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4273 7821 4285 7820 4284 7731 4276 7731
      4273 7734 4267 7737 4258 7737 4258 7766
      4255 7766
TIME...MOT...LOC 1240Z 276DEG 49KT 4271 7803 

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

RSH
2 follow-up statements
596 
WWUS51 KBUF 251256
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
856 AM EDT MON JUL 25 2016

NYC121-251306-
/O.CAN.KBUF.SV.W.0038.000000T0000Z-160725T1315Z/
WYOMING NY-
856 AM EDT MON JUL 25 2016

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

LAT...LON 4262 7784 4284 7783 4284 7731 4276 7731
      4273 7734 4267 7737 4258 7737 4258 7766
      4255 7766
TIME...MOT...LOC 1256Z 275DEG 47KT 4269 7757 

$$

NYC051-069-251315-
/O.CON.KBUF.SV.W.0038.000000T0000Z-160725T1315Z/
ONTARIO NY-LIVINGSTON NY-
856 AM EDT MON JUL 25 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 AM EDT
FOR SOUTHWESTERN ONTARIO AND SOUTHEASTERN LIVINGSTON COUNTIES...

AT 856 AM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR CONESUS...OR 11
MILES NORTHEAST OF DANSVILLE...MOVING EAST AT 55 MPH.

HAZARD...60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
GENESEO...DANSVILLE...CONESUS...NAPLES...HONEOYE...HEMLOCK...GROVELAND AND
SPRINGWATER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4262 7784 4284 7783 4284 7731 4276 7731
      4273 7734 4267 7737 4258 7737 4258 7766
      4255 7766
TIME...MOT...LOC 1256Z 275DEG 47KT 4269 7757 

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

RSH
683 
WWUS51 KBUF 251318
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
918 AM EDT MON JUL 25 2016

NYC051-069-251327-
/O.EXP.KBUF.SV.W.0038.000000T0000Z-160725T1315Z/
ONTARIO NY-LIVINGSTON NY-
918 AM EDT MON JUL 25 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ONTARIO AND
SOUTHEASTERN LIVINGSTON COUNTIES HAS EXPIRED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE WARNING HAS BEEN ALLOWED TO EXPIRE.  HOWEVER GUSTY
WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4262 7784 4284 7783 4284 7731 4276 7731
      4273 7734 4267 7737 4258 7737 4258 7766
      4255 7766
TIME...MOT...LOC 1317Z 276DEG 49KT 4269 7757 

$$

WELCH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 4:29 AM EDTBeach Hazards StatementBUFErie18 hr
Jul 25, 4:29 AM EDTSmall Craft AdvisoryBUF18 hr
Jul 25, 6:33 AM EDTSpecial Marine WarningBUF57 min
Jul 25, 7:11 AM EDTSpecial Marine WarningBUF64 min
Jul 25, 7:15 AM EDTSpecial Marine WarningBUF60 min
Jul 25, 7:21 AM EDTSpecial Weather StatementBUFMonroe54 min
Jul 25, 7:22 AM EDTSpecial Weather StatementBUFGenesee23 min
Jul 25, 7:41 AM EDTSpecial Weather StatementBUFErie64 min
Jul 25, 7:50 AM EDTSpecial Weather StatementBUFGenesee, Monroe55 min
Jul 25, 8:19 AM EDTSpecial Marine WarningBUF56 min
Jul 25, 8:22 AM EDTSpecial Weather StatementBUFNiagara, Orleans23 min
Jul 25, 8:35 AM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Erie, Livingston, Wyoming55 min
Jul 25, 9:10 AM EDTSpecial Marine WarningBUF35 min
Jul 25, 9:44 AM EDTSpecial Marine WarningBUF46 min
Jul 25, 9:59 AM EDTSpecial Weather StatementBUFErie46 min
Jul 25, 10:02 AM EDTSpecial Marine WarningBUF58 min
Jul 25, 10:30 AM EDTSpecial Marine WarningBUF60 min
Jul 25, 10:35 AM EDTSpecial Weather StatementBUFNiagara40 min
Jul 25, 10:47 AM EDTSpecial Weather StatementBUFGenesee, Orleans43 min
Jul 25, 10:50 AM EDTSpecial Marine WarningBUF55 min
Jul 25, 11:44 AM EDTSpecial Weather StatementBUFChautauqua46 min
Jul 25, 11:46 AM EDTSpecial Marine WarningBUF59 min
Jul 25, 12:05 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Chautauqua, Erie, Wyoming55 min
Jul 25, 12:38 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua55 min
Jul 25, 12:48 PM EDTSpecial Marine WarningBUF42 min
Jul 25, 12:56 PM EDTSpecial Weather StatementBUFWyoming34 min
Jul 25, 1:01 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus59 min
Jul 25, 1:07 PM EDTSpecial Weather StatementBUFChautauqua38 min
Jul 25, 1:24 PM EDTSpecial Weather StatementBUFLivingston, Ontario36 min
Jul 25, 4:44 PM EDTSpecial Weather StatementBUFGenesee46 min
Jul 25, 5:58 PM EDTSpecial Weather StatementBUFGenesee32 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.