Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 45, NWS Buffalo, NY

June 16, 2017Ontario County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 16, 2017, 5:54 PM EDT for Ontario County, New York. It was in force for 30 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: Jun 16, 2017, 5:54 PM EDT (21:54 UTC)
Expired: Jun 16, 2017, 6:24 PM EDT
In force: 30 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Ontario County, NY

The radar

The Binghamton radar (KBGM), 114 km from the middle of the area, began a volume at 21:54 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

Time	Report	Where	Remark
Jun 16, 5:57 PM EDT	TSTM WND DMG	Seneca Castle, NY	TREE DOWN
Jun 16, 6:00 PM EDT	TSTM WND DMG	1 Sse Seneca Castle, NY	TREE AND WIRES DOWN INTERSECTION OF VOGT RD AND SENECA CASTLE RD

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, 9.9 hours before the alert went out and 134 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: 110 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 846 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

743 
WUUS51 KBUF 162154
SVRBUF
NYC069-162300-
/O.NEW.KBUF.SV.W.0045.170616T2154Z-170616T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
554 PM EDT FRI JUN 16 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Northeastern Ontario County in western New York...

* Until 700 PM EDT.

* At 553 PM EDT, a severe thunderstorm was located near Geneva,
  moving southeast at 10 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...
  Geneva, Phelps, Gorham, Seneca Castle, Seneca Lake State Park, Hall
  and West Junius.

This includes Interstate 90 near exit 42.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4284 7725 4299 7706 4295 7696 4287 7696
      4287 7698 4286 7698 4284 7697 4276 7697
      4276 7717
TIME...MOT...LOC 2153Z 316DEG 9KT 4287 7706 

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

Church

1 follow-up statement

753 
WWUS51 KBUF 162224
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
624 PM EDT FRI JUN 16 2017

NYC069-162234-
/O.CAN.KBUF.SV.W.0045.000000T0000Z-170616T2300Z/
Ontario NY-
624 PM EDT FRI JUN 16 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ONTARIO COUNTY IS
CANCELLED...
                
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 cancelled.

LAT...LON 4284 7725 4299 7706 4295 7696 4287 7696
      4287 7698 4286 7698 4284 7697 4276 7697
      4276 7717
TIME...MOT...LOC 2223Z 316DEG 9KT 4281 7699 

$$

Church

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 10:33 PM EDT	Areal Flood Advisory	BUF	Monroe	12 hr
Jun 16, 5:46 PM EDT	Special Weather Statement	BUF	Ontario	29 min

Nearby

Severe Thunderstorm Warnings in New York, 2017 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.