Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 16, NWS Buffalo, NY

May 14, 2017Ontario County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 14, 2017, 4:32 PM EDT for Ontario County, New York. It was in force for 28 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: May 14, 2017, 4:32 PM EDT (20:32 UTC)
Expired: May 14, 2017, 5:00 PM EDT
In force: 28 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County Ontario County, NY

The radar

The Binghamton radar (KBGM), 117 km from the middle of the area, began a volume at 20:35 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
May 14, 4:33 PM EDT	HAIL 0.75	Canandaigua, NY
May 14, 4:35 PM EDT	HAIL 1	3 E Canandaigua, NY

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, 8.5 hours before the alert went out and 131 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1091 m above ground
0-6 km bulk shear: 88 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

680 
WUUS51 KBUF 142032
SVRBUF
NYC069-142100-
/O.NEW.KBUF.SV.W.0016.170514T2032Z-170514T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
432 PM EDT SUN MAY 14 2017

The National Weather Service in Buffalo has issued a

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

* Until 500 PM EDT.

* At 431 PM EDT, a severe thunderstorm was located near Canandaigua,
  moving southeast at 45 mph.

  HAZARD...Quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Damage to vehicles is expected. 

* Locations impacted include...
  Geneva, Canandaigua, Clifton Springs, Gorham, Manchester,
  Shortsville, Seneca Castle and Seneca Lake State Park.

This includes Interstate 90 near exit 43.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4284 7736 4300 7724 4291 7696 4287 7696
      4287 7698 4286 7698 4284 7697 4276 7698
      4276 7719
TIME...MOT...LOC 2031Z 298DEG 38KT 4289 7722 

HAIL...1.00IN
WIND...<50MPH
 
$$

Church

2 follow-up statements

238 
WWUS51 KBUF 142043
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
443 PM EDT SUN MAY 14 2017

NYC069-142100-
/O.CON.KBUF.SV.W.0016.000000T0000Z-170514T2100Z/
Ontario NY-
443 PM EDT SUN MAY 14 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHEASTERN ONTARIO COUNTY...

At 443 PM EDT, a severe thunderstorm was located near Geneva, moving
southeast at 40 mph.

HAZARD...Quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Damage to vehicles is expected. 

Locations impacted include...
Geneva, Canandaigua, Gorham, Seneca Castle, Seneca Lake State Park,
Cottage City and Hall.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4284 7734 4294 7714 4291 7696 4287 7696
      4287 7698 4286 7698 4284 7697 4276 7698
      4276 7719
TIME...MOT...LOC 2043Z 297DEG 34KT 4284 7709 

HAIL...1.00IN
WIND...<50MPH
 
$$

Church

424 
WWUS51 KBUF 142056
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
456 PM EDT SUN MAY 14 2017

NYC069-142106-
/O.EXP.KBUF.SV.W.0016.000000T0000Z-170514T2100Z/
Ontario NY-
456 PM EDT SUN MAY 14 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ONTARIO COUNTY
WILL EXPIRE AT 500 PM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore the warning will be
allowed to expire.

LAT...LON 4284 7734 4294 7714 4291 7696 4287 7696
      4287 7698 4286 7698 4284 7697 4276 7698
      4276 7719
TIME...MOT...LOC 2056Z 298DEG 38KT 4279 7695 

$$

Church

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 3:53 AM EDT	Lakeshore Flood Warning	BUF	Cayuga, Oswego, Wayne	33 hr
May 14, 4:05 AM EDT	Small Craft Advisory	BUF		33 hr
May 14, 3:43 PM EDT	Special Weather Statement	BUF	Ontario	32 min
May 14, 4:07 PM EDT	Special Weather Statement	BUF	Ontario	23 min
May 14, 4:27 PM EDT	Special Weather Statement	BUF	Ontario	33 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.