Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 36, NWS Buffalo, NY

May 30, 2017Allegany County, Livingston County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 30, 2017, 2:03 PM EDT for Allegany County, Livingston County, New York. It was in force for 27 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 30, 2017, 2:03 PM EDT (18:03 UTC)
Expired: May 30, 2017, 2:30 PM EDT
In force: 27 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Allegany County, NY, Livingston County, NY

The radar

The Buffalo radar (KBUF), 97 km from the middle of the area, began a volume at 18:05 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
May 30, 12:39 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.1 hours before the alert went out and 93 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: 1274 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 104 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

982 
WUUS51 KBUF 301803
SVRBUF
NYC003-051-301830-
/O.NEW.KBUF.SV.W.0036.170530T1803Z-170530T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
203 PM EDT TUE MAY 30 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  South central Livingston County in western New York...
  Northeastern Allegany County in western New York...

* Until 230 PM EDT.

* At 202 PM EDT, a severe thunderstorm was located 9 miles northwest
  of Alfred, or 12 miles west of Hornell, moving northeast at 50 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...
  Dansville, Alfred, Ossian, Canaseraga, Almond, West Almond,
  Birdsall and Short Tract.

This includes the following highways...
 Interstate 390 near exit 4.
 Interstate 86 between exits 32 and 33.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4224 7794 4244 7806 4257 7766 4253 7766
      4253 7772 4224 7774
TIME...MOT...LOC 1802Z 244DEG 43KT 4236 7790 

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

Mitchell

1 follow-up statement

224 
WWUS51 KBUF 301824
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
224 PM EDT TUE MAY 30 2017

NYC003-051-301834-
/O.EXP.KBUF.SV.W.0036.000000T0000Z-170530T1830Z/
Livingston NY-Allegany NY-
224 PM EDT TUE MAY 30 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL LIVINGSTON AND
NORTHEASTERN ALLEGANY COUNTIES WILL EXPIRE AT 230 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 800 PM EDT for
western New York.

LAT...LON 4224 7794 4244 7806 4257 7766 4253 7766
      4253 7772 4224 7774
TIME...MOT...LOC 1824Z 244DEG 43KT 4247 7759 

$$

Smith

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 1:14 AM EDT	Special Marine Warning	BUF		61 min
May 30, 1:52 AM EDT	Special Marine Warning	BUF		83 min
May 30, 1:05 PM EDT	Special Weather Statement	BUF	Allegany	25 min
May 30, 1:17 PM EDT	Special Weather Statement	BUF	Wayne	28 min
May 30, 1:18 PM EDT	Special Weather Statement	BUF	Ontario	27 min
May 30, 1:22 PM EDT	Special Weather Statement	BUF	Ontario	23 min
May 30, 1:32 PM EDT	Special Marine Warning	BUF		43 min
May 30, 1:34 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Erie, Livingston, Wyoming	30 min
May 30, 1:41 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Ontario, Wayne	49 min
May 30, 1:54 PM EDT	Special Weather Statement	BUF	Jefferson	36 min
May 30, 2:10 PM EDT	Special Marine Warning	BUF		65 min
May 30, 2:10 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	50 min
May 30, 2:21 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Ontario, Wayne	54 min
May 30, 3:13 PM EDT	Special Weather Statement	BUF	Ontario	32 min
May 30, 4:23 PM EDT	Special Weather Statement	BUF	Onondaga	22 min
May 30, 4:41 PM EDT	Special Weather Statement	BUF	Lewis	49 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.