Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 65, NWS Buffalo, NY

June 26, 20174 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 26, 2017, 4:47 PM EDT for 4 counties in New York. It was in force for 58 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
Jun 26, 2017, 4:47 PM EDT (20:47 UTC)
Expired
Jun 26, 2017, 5:45 PM EDT
In force
58 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

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

The radar

The Buffalo radar (KBUF), 71 km from the middle of the area, began a volume at 20:46 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, 8.8 hours before the alert went out and 67 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 2017-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 68 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 2017-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.1939587897Sfc1 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
68 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
988 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

633 
WUUS51 KBUF 262047
SVRBUF
NYC037-051-055-121-262145-
/O.NEW.KBUF.SV.W.0065.170626T2047Z-170626T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
447 PM EDT MON JUN 26 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Northeastern Wyoming County in western New York...
  Northern Livingston County in western New York...
  Southwestern Monroe County in western New York...
  Eastern Genesee County in western New York...

* Until 545 PM EDT.

* At 447 PM EDT, a severe thunderstorm was located near Attica, or 11
  miles southeast of Darien Lakes State Park, moving northeast at 30
  mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Minor damage to vehicles is possible. Expect wind damage 
           to trees and power lines. 

* Locations impacted include...
  Batavia, Geneseo, Le Roy, Perry, Warsaw, Avon, Attica and Pavilion.

This includes the following highways...
 Interstate 390 between exits 8 and 10.
 Interstate 90 near exit 47.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4264 7826 4283 7839 4320 7787 4287 7755
      4286 7755 4285 7759 4283 7759
TIME...MOT...LOC 2047Z 235DEG 26KT 4281 7824 

HAIL...1.00IN
WIND...60MPH
 
$$

Zaff
2 follow-up statements
880 
WWUS51 KBUF 262111
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
511 PM EDT MON JUN 26 2017

NYC121-262121-
/O.CAN.KBUF.SV.W.0065.000000T0000Z-170626T2145Z/
Wyoming NY-
511 PM EDT MON JUN 26 2017

...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 has been cancelled.

LAT...LON 4287 7811 4291 7814 4314 7781 4293 7761
TIME...MOT...LOC 2111Z 235DEG 26KT 4291 7805 

$$

NYC037-051-055-262145-
/O.CON.KBUF.SV.W.0065.000000T0000Z-170626T2145Z/
Livingston NY-Monroe NY-Genesee NY-
511 PM EDT MON JUN 26 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR NORTHWESTERN LIVINGSTON...SOUTHWESTERN MONROE AND SOUTHEASTERN
GENESEE COUNTIES...

At 511 PM EDT, a severe thunderstorm was located over Pavilion, or 9
miles southeast of Batavia, moving northeast at 30 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Trained weather spotters. 

IMPACT...Minor damage to vehicles is possible. Expect wind damage to 
         trees and power lines. 

Locations impacted include...
Le Roy, Avon, Caledonia, Scottsville, Riga, Industry, East Bethany
and Mumford.

This includes Interstate 90 near exit 47.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4287 7811 4291 7814 4314 7781 4293 7761
TIME...MOT...LOC 2111Z 235DEG 26KT 4291 7805 

HAIL...1.00IN
WIND...60MPH
 
$$

Zaff
418 
WWUS51 KBUF 262139
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
539 PM EDT MON JUN 26 2017

NYC037-051-055-262147-
/O.EXP.KBUF.SV.W.0065.000000T0000Z-170626T2145Z/
Livingston NY-Monroe NY-Genesee NY-
539 PM EDT MON JUN 26 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LIVINGSTON...
SOUTHWESTERN MONROE AND SOUTHEASTERN GENESEE COUNTIES WILL EXPIRE AT
545 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

However, A new severe thunderstorm warning remains in effect for 
Southeastern Monroe County and Western Wayne County in western New 
York.

LAT...LON 4287 7811 4291 7814 4314 7781 4293 7761
TIME...MOT...LOC 2137Z 235DEG 26KT 4300 7787 

$$

Zaff

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 10:03 PM EDTSmall Craft AdvisoryBUF6 hr
Jun 26, 4:17 AM EDTBeach Hazards StatementBUFChautauqua18 hr
Jun 26, 8:13 AM EDTSpecial Marine WarningBUF62 min
Jun 26, 10:45 AM EDTSpecial Marine WarningBUF60 min
Jun 26, 10:57 AM EDTSpecial Marine WarningBUF33 min
Jun 26, 2:16 PM EDTSpecial Weather StatementBUFWayne29 min
Jun 26, 2:58 PM EDTSpecial Marine WarningBUF92 min
Jun 26, 3:08 PM EDTSpecial Weather StatementBUFCayuga52 min
Jun 26, 4:43 PM EDTSpecial Weather StatementBUFWyoming47 min
Jun 26, 5:36 PM EDTSevere Thunderstorm WarningBUFMonroe, Wayne25 min
Jun 26, 5:49 PM EDTSpecial Marine WarningBUF86 min
Jun 26, 5:59 PM EDTSevere Thunderstorm WarningBUFLivingston, Ontario45 min
Jun 26, 6:34 PM EDTSevere Thunderstorm WarningBUFCayuga, Oswego, Wayne56 min
Jun 26, 7:10 PM EDTSpecial Marine WarningBUF65 min

Nearby

Severe Thunderstorm Warnings in New York, 2017Every severe thunderstorm warning in 2017

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.