Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 130, NWS Buffalo, NY

September 5, 2017Ontario County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 5, 2017, 12:24 AM EDT for Ontario County, Wayne County, New York. It was in force for 21 min. 1 report 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: Sep 5, 2017, 12:24 AM EDT (04:24 UTC)
Expired: Sep 5, 2017, 12:45 AM EDT
In force: 21 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Ontario County, NY, Wayne County, NY

The radar

The Binghamton radar (KBGM), 115 km from the middle of the area, began a volume at 04:25 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
Sep 5, 12:34 AM EDT	TSTM WND DMG	Geneva, NY	MULTIPLE REPORTS OF TREES/WIRES DOWN AROUND CITY

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, 4.4 hours before the alert went out and 137 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: 94 J/kg
Mixed-layer CIN: -227 J/kg
Mixed-layer LCL: 1561 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 339 m²/s²
0-3 km storm-relative helicity: 515 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

932 
WUUS51 KBUF 050424
SVRBUF
NYC069-117-050515-
/O.NEW.KBUF.SV.W.0130.170905T0424Z-170905T0515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1224 AM EDT TUE SEP 5 2017

The National Weather Service in Buffalo has issued a

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

* Until 115 AM EDT.

* At 1224 AM EDT, a severe thunderstorm was located near Canandaigua,
  moving northeast at 55 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect wind damage to trees and power lines. 

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

This includes Interstate 90 between exits 43 and 42.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4278 7723 4300 7726 4304 7684 4302 7685
      4301 7696 4287 7696 4287 7698 4286 7698
      4284 7697 4283 7698
TIME...MOT...LOC 0424Z 239DEG 46KT 4289 7718 

HAIL...<.75IN
WIND...60MPH
 
$$

RSH

1 follow-up statement

894 
WWUS51 KBUF 050445
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
1245 AM EDT TUE SEP 5 2017

NYC069-117-050455-
/O.CAN.KBUF.SV.W.0130.000000T0000Z-170905T0515Z/
Wayne NY-Ontario NY-
1245 AM EDT TUE SEP 5 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL WAYNE AND
NORTHEASTERN ONTARIO COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

LAT...LON 4278 7723 4300 7726 4304 7684 4302 7685
      4301 7696 4287 7696 4287 7698 4286 7698
      4284 7697 4283 7698
TIME...MOT...LOC 0444Z 239DEG 46KT 4303 7687 

$$

RSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 4, 9:47 PM EDT	Special Marine Warning	BUF		88 min
Sep 4, 10:12 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	63 min
Sep 4, 10:20 PM EDT	Special Weather Statement	BUF	Erie, Genesee, Wyoming	40 min
Sep 4, 10:24 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Orleans, Wyoming	32 min
Sep 4, 10:55 PM EDT	Beach Hazards Statement	BUF	Cayuga, Jefferson, Oswego	12 hr
Sep 4, 10:59 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	61 min
Sep 4, 11:06 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Wayne	39 min
Sep 4, 11:08 PM EDT	Special Marine Warning	BUF		52 min
Sep 4, 11:24 PM EDT	Special Marine Warning	BUF		66 min
Sep 4, 11:33 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	57 min
Sep 4, 11:51 PM EDT	Special Marine Warning	BUF		39 min
Sep 4, 11:57 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	63 min
Sep 5, 12:07 AM EDT	Flash Flood Warning	BUF	Cattaraugus, Chautauqua	3 hr
Sep 5, 12:18 AM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston	30 min
Sep 5, 10:19 AM EDT	Special Marine Warning	BUF		41 min
Sep 5, 10:23 AM EDT	Special Weather Statement	BUF	Allegany	37 min
Sep 5, 10:38 AM EDT	Special Weather Statement	BUF	Allegany	37 min
Sep 5, 5:46 PM EDT	Special Marine Warning	BUF		59 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.