Alert archive / New York / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 6, NWS Buffalo, NY

May 10, 2015Ontario County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 10, 2015, 4:45 PM EDT for Ontario County, New York. It was in force for 30 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: May 10, 2015, 4:45 PM EDT (20:45 UTC)
Expired: May 10, 2015, 5:15 PM EDT
In force: 30 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Ontario County, NY

The radar

The Binghamton radar (KBGM), 118 km from the middle of the area, began a volume at 20:48 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 127 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 13 J/kg
Mixed-layer CIN: -186 J/kg
Mixed-layer LCL: 1320 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 85 m²/s²
0-3 km storm-relative helicity: 105 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.

318 
WUUS51 KBUF 102045
SVRBUF
NYC069-102115-
/O.NEW.KBUF.SV.W.0006.150510T2045Z-150510T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
445 PM EDT SUN MAY 10 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ONTARIO COUNTY IN WESTERN NEW YORK...

* UNTIL 515 PM EDT

* AT 445 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED NEAR CANANDAIGUA...AND MOVING EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GENEVA...CANANDAIGUA...CLIFTON SPRINGS...PHELPS...RUSHVILLE...
  GORHAM...COTTAGE CITY AND HALL.

THIS INCLUDES INTERSTATE 90 NEAR EXIT 42.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 4273 7737 4291 7740 4299 7696 4287 7696
      4287 7698 4286 7698 4284 7697 4276 7697
      4276 7731 4273 7734
TIME...MOT...LOC 2045Z 262DEG 22KT 4283 7729 

$$

CHURCH

2 follow-up statements

476 
WWUS51 KBUF 102102
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
502 PM EDT SUN MAY 10 2015

NYC069-102115-
/O.CON.KBUF.SV.W.0006.000000T0000Z-150510T2115Z/
ONTARIO NY-
502 PM EDT SUN MAY 10 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTHEASTERN ONTARIO COUNTY...

AT 501 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR RUSHVILLE...OR 7 MILES SOUTHEAST OF CANANDAIGUA...MOVING
EAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
GENEVA...CLIFTON SPRINGS...PHELPS...GORHAM...HALL...SENECA LAKE STATE
PARK...WEST JUNIUS AND SENECA CASTLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

&&

LAT...LON 4299 7696 4287 7696 4287 7698 4286 7698
      4284 7697 4276 7697 4276 7722 4294 7726
TIME...MOT...LOC 2101Z 262DEG 22KT 4284 7715 

$$

CHURCH

370 
WWUS51 KBUF 102115
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
515 PM EDT SUN MAY 10 2015

NYC069-102124-
/O.EXP.KBUF.SV.W.0006.000000T0000Z-150510T2115Z/
ONTARIO NY-
515 PM EDT SUN MAY 10 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ONTARIO COUNTY
WILL EXPIRE AT 515 PM EDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR 
PROPERTY. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER 
GUSTY WINDS 40 TO 50 MPH ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4299 7696 4287 7696 4287 7698 4286 7698
      4284 7697 4276 7697 4276 7722 4294 7726
TIME...MOT...LOC 2113Z 262DEG 22KT 4284 7715 

$$

CHURCH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 3:10 PM EDT	Special Weather Statement	BUF	Genesee	35 min
May 10, 3:28 PM EDT	Special Weather Statement	BUF	Ontario	47 min
May 10, 3:58 PM EDT	Flash Flood Warning	BUF	Livingston, Monroe	3 hr
May 10, 4:14 PM EDT	Special Weather Statement	BUF	Wayne	46 min
May 10, 6:04 PM EDT	Special Weather Statement	BUF	Chautauqua	41 min
May 10, 6:54 PM EDT	Areal Flood Warning	BUF	Livingston	3 hr

Nearby

Severe Thunderstorm Warnings in New York, 2015 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.