Alert archive / New York / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 41, NWS Buffalo, NY

June 23, 20155 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 23, 2015, 4:29 AM EDT for 5 counties in New York. It was in force for 46 min. 10 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
Jun 23, 2015, 4:29 AM EDT (08:29 UTC)
Expired
Jun 23, 2015, 5:15 AM EDT
In force
46 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Genesee County, NY, Livingston County, NY, Monroe County, NY, Orleans County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 48 km from the middle of the area, began a volume at 08:30 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.

What was reported inside it

TimeReportWhereRemark
Jun 23, 4:32 AM EDTTSTM WND DMG1 S Batavia, NYPART OF TREE DOWN IN YARD ALONG OSTERHAUT AVE
Jun 23, 4:32 AM EDTTSTM WND DMG1 Sse Batavia, NYPARTIAL TREE DOWN IN FERRELL PARK
Jun 23, 4:32 AM EDTTSTM WND DMGBatavia, NYLARGE TREE BRANCHES AND HALF OF A TREE DOWN ON ELLICOTT STREET
Jun 23, 4:35 AM EDTTSTM WND DMG2 Sw Batavia, NYLARGE TREE LIMBS DOWN ACROSS PIKE RD
Jun 23, 4:35 AM EDTTSTM WND DMGBethany Center, NYTREES AND POWERLINES DOWN
Jun 23, 4:41 AM EDTTSTM WND DMG2 Ne Stafford, NYTOP HALF OF TREE SNAPPED OFF
Jun 23, 4:41 AM EDTTSTM WND DMGStafford, NYNUMEROUS LARGE TREE LIMBS DOWN
Jun 23, 4:43 AM EDTTSTM WND DMGLe Roy, NYTREES AND POWERLINES DOWN
Jun 23, 4:45 AM EDTTSTM WND DMGPavilion, NYTREES AND POWERLINES DOWN
Jun 23, 4:52 AM EDTTSTM WND DMGCaledonia, NYTREES AND POWERLINES 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 00:00Z, 8.5 hours before the alert went out and 45 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 00:00Z on 2015-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2015-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2108 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
298 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

606 
WUUS51 KBUF 230829
SVRBUF
NYC037-051-055-073-121-230915-
/O.NEW.KBUF.SV.W.0041.150623T0829Z-150623T0915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
429 AM EDT TUE JUN 23 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN LIVINGSTON COUNTY IN WESTERN NEW YORK...
  GENESEE COUNTY IN WESTERN NEW YORK...
  NORTHERN WYOMING COUNTY IN WESTERN NEW YORK...
  SOUTHWESTERN MONROE COUNTY IN WESTERN NEW YORK...
  SOUTHERN ORLEANS COUNTY IN WESTERN NEW YORK...

* UNTIL 515 AM EDT

* AT 429 AM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
  MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES
  NORTHWEST OF OAKFIELD TO 7 MILES NORTH OF CHAFFEE...AND MOVING
  NORTHEAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BATAVIA...BROCKPORT...GENESEO...ALBION...DARIEN LAKES STATE PARK...
  LETCHWORTH STATE PARK...LE ROY AND PERRY.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 390 NEAR EXIT 7.
 INTERSTATE 90 BETWEEN EXITS 48A AND 47.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4271 7843 4315 7843 4335 7798 4311 7777
      4272 7783
TIME...MOT...LOC 0829Z 239DEG 53KT 4311 7838 4267 7844 

$$

HITCHCOCK
2 follow-up statements
778 
WWUS51 KBUF 230849
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
449 AM EDT TUE JUN 23 2015

NYC037-051-055-073-121-230915-
/O.CON.KBUF.SV.W.0041.000000T0000Z-150623T0915Z/
LIVINGSTON NY-GENESEE NY-WYOMING NY-MONROE NY-ORLEANS NY-
449 AM EDT TUE JUN 23 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 AM EDT
FOR NORTHWESTERN LIVINGSTON...EASTERN GENESEE...NORTHEASTERN
WYOMING...SOUTHWESTERN MONROE AND SOUTHEASTERN ORLEANS COUNTIES...

AT 449 AM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR LE
ROY TO NEAR PERRY...MOVING EAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
BROCKPORT...GENESEO...LETCHWORTH STATE PARK...LE ROY...PERRY...MOUNT
MORRIS...PAVILION AND BYRON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE IMMEDIATELY FOR
LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE TO A
SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

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

&&

LAT...LON 4272 7810 4316 7809 4324 7788 4311 7777
      4272 7783
TIME...MOT...LOC 0849Z 258DEG 49KT 4301 7794 4273 7804 

$$

HITCHCOCK
428 
WWUS51 KBUF 230909
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
509 AM EDT TUE JUN 23 2015

NYC037-051-055-073-121-230919-
/O.EXP.KBUF.SV.W.0041.000000T0000Z-150623T0915Z/
LIVINGSTON NY-GENESEE NY-WYOMING NY-MONROE NY-ORLEANS NY-
509 AM EDT TUE JUN 23 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LIVINGSTON...
EASTERN GENESEE...NORTHEASTERN WYOMING...SOUTHWESTERN MONROE AND
SOUTHEASTERN ORLEANS COUNTIES WILL EXPIRE AT 515 AM EDT...
    
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4272 7810 4316 7809 4324 7788 4311 7777
      4272 7783
TIME...MOT...LOC 0908Z 239DEG 53KT 4301 7794 4273 7804 

$$

HITCHCOCK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 1:13 AM EDTSpecial Marine WarningBUF2 hr
Jun 23, 1:16 AM EDTSpecial Marine WarningBUF119 min
Jun 23, 3:21 AM EDTSpecial Marine WarningBUF84 min
Jun 23, 3:42 AM EDTSpecial Marine WarningBUF63 min
Jun 23, 3:44 AM EDTSpecial Marine WarningBUF61 min
Jun 23, 3:52 AM EDTSevere Thunderstorm WarningBUFErie, Niagara34 min
Jun 23, 4:24 AM EDTSpecial Marine WarningBUF96 min
Jun 23, 4:44 AM EDTSevere Thunderstorm WarningBUFChautauqua46 min
Jun 23, 4:52 AM EDTSevere Thunderstorm WarningBUFLivingston, Monroe, Ontario, Wayne53 min
Jun 23, 5:27 AM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua, Erie63 min
Jun 23, 6:02 AM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus58 min

Nearby

Severe Thunderstorm Warnings in New York, 2015Every severe thunderstorm warning in 2015

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.