Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 49, NWS Buffalo, NY

June 18, 2017Cattaraugus County, Erie County, Wyoming County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 18, 2017, 3:53 PM EDT for Cattaraugus County, Erie County, Wyoming County, New York. It was in force for 67 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 18, 2017, 3:53 PM EDT (19:53 UTC)
Expired: Jun 18, 2017, 5:00 PM EDT
In force: 67 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cattaraugus County, NY, Erie County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 45 km from the middle of the area, began a volume at 19:56 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 18, 1:37 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.9 hours before the alert went out and 41 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: 199 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 1297 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted.

799 
WUUS51 KBUF 181953
SVRBUF
NYC009-029-121-182100-
/O.NEW.KBUF.SV.W.0049.170618T1953Z-170618T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
353 PM EDT SUN JUN 18 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Wyoming County in western New York...
  Northeastern Cattaraugus County in western New York...
  Southeastern Erie County in western New York...

* Until 500 PM EDT.

* At 353 PM EDT, a severe thunderstorm was located near Springville,
  or 20 miles southeast of Hamburg, moving northeast at 40 mph.

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

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Springville, Warsaw, Attica, Arcade, Ashford Hollow, Chaffee, East
  Concord and Varysburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4250 7881 4286 7830 4279 7807 4262 7805
      4236 7867
TIME...MOT...LOC 1953Z 235DEG 35KT 4246 7866 

HAIL...0.75IN
WIND...60MPH
 
$$

HITCHCOCK

2 follow-up statements

815 
WWUS51 KBUF 182023
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
423 PM EDT SUN JUN 18 2017

NYC009-029-121-182100-
/O.CON.KBUF.SV.W.0049.000000T0000Z-170618T2100Z/
Wyoming NY-Cattaraugus NY-Erie NY-
423 PM EDT SUN JUN 18 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR WYOMING...NORTHEASTERN CATTARAUGUS AND SOUTHEASTERN ERIE
COUNTIES...

At 423 PM EDT, a severe thunderstorm was located near Arcade, or 18
miles southeast of East Aurora, moving northeast at 40 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Springville, Warsaw, Attica, Arcade, Ashford Hollow, Chaffee, East
Concord and Varysburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4250 7881 4286 7830 4279 7807 4262 7805
      4236 7867
TIME...MOT...LOC 2023Z 236DEG 34KT 4259 7834 

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

HITCHCOCK

756 
WWUS51 KBUF 182058
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
458 PM EDT SUN JUN 18 2017

NYC009-029-121-182107-
/O.EXP.KBUF.SV.W.0049.000000T0000Z-170618T2100Z/
Wyoming NY-Cattaraugus NY-Erie NY-
458 PM EDT SUN JUN 18 2017

...THE SEVERE THUNDERSTORM WARNING FOR WYOMING...NORTHEASTERN
CATTARAUGUS AND SOUTHEASTERN ERIE COUNTIES WILL EXPIRE AT 500 PM
EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A severe thunderstorm watch remains in effect until 900 PM EDT for
western New York.

Remember, a new Severe Thunderstorm Warning still remains in effect 
for portions of Cattaraugus and Wyoming counties.

LAT...LON 4250 7881 4286 7830 4279 7807 4262 7805
      4236 7867
TIME...MOT...LOC 2057Z 235DEG 35KT 4277 7799 

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 10:50 PM EDT	Flash Flood Watch	BUF	Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Jefferson and 7 more	22 hr
Jun 18, 2:07 PM EDT	Special Weather Statement	BUF	Chautauqua	38 min
Jun 18, 2:14 PM EDT	Special Marine Warning	BUF		61 min
Jun 18, 2:23 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	37 min
Jun 18, 2:24 PM EDT	Special Marine Warning	BUF		66 min
Jun 18, 2:37 PM EDT	Special Weather Statement	BUF	Wayne	53 min
Jun 18, 2:41 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	49 min
Jun 18, 3:04 PM EDT	Special Marine Warning	BUF		86 min
Jun 18, 3:27 PM EDT	Special Marine Warning	BUF		63 min
Jun 18, 3:45 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	60 min
Jun 18, 4:05 PM EDT	Special Weather Statement	BUF	Oswego	40 min
Jun 18, 4:29 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Orleans	31 min
Jun 18, 4:40 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	65 min
Jun 18, 4:49 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Wyoming	56 min
Jun 18, 4:53 PM EDT	Special Weather Statement	BUF	Lewis	67 min
Jun 18, 4:54 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Wyoming	51 min
Jun 18, 5:14 PM EDT	Special Weather Statement	BUF	Lewis	61 min
Jun 18, 5:16 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	59 min
Jun 18, 5:19 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario, Wayne	56 min
Jun 18, 5:21 PM EDT	Special Marine Warning	BUF		54 min
Jun 18, 5:28 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston, Wyoming	47 min
Jun 18, 5:46 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	59 min
Jun 18, 6:01 PM EDT	Special Marine Warning	BUF		59 min
Jun 18, 6:11 PM EDT	Severe Thunderstorm Warning	BUF	Ontario, Wayne	49 min
Jun 18, 6:30 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego	45 min
Jun 18, 6:41 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	64 min
Jun 18, 6:44 PM EDT	Special Marine Warning	BUF		61 min
Jun 18, 7:02 PM EDT	Special Marine Warning	BUF		28 min
Jun 18, 7:13 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	62 min
Jun 18, 7:36 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	54 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.