Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 27, NWS Buffalo, NY

May 18, 2017Cattaraugus County, Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 18, 2017, 9:01 PM EDT for Cattaraugus County, Chautauqua County, New York. It was in force for 15 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 18, 2017, 9:01 PM EDT (01:01 UTC)
Expired: May 18, 2017, 9:16 PM EDT
In force: 15 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cattaraugus County, NY, Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 106 km from the middle of the area, began a volume at 01:02 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 18, 3:36 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.0 hours before the alert went out and 106 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: 13 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 2030 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 235 m²/s²
0-3 km storm-relative helicity: 340 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

925 
WUUS51 KBUF 190101
SVRBUF
NYC009-013-190145-
/O.NEW.KBUF.SV.W.0027.170519T0101Z-170519T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
901 PM EDT THU MAY 18 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Southwestern Cattaraugus County in western New York...
  Southern Chautauqua County in western New York...

* Until 945 PM EDT.

* At 901 PM EDT, a severe thunderstorm was located near Clymer, or 19
  miles west of Jamestown, moving east 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...
  Jamestown, Lakewood, Falconer, Clymer, Long Point State Park,
  Jamestown West, Chautauqua Institute and Frewsburg.

This includes Interstate 86 between exits 6 and 16.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4200 7968 4211 7973 4247 7898 4214 7875
      4200 7944
TIME...MOT...LOC 0101Z 248DEG 43KT 4207 7961 

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

Church

1 follow-up statement

483 
WWUS51 KBUF 190116
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
916 PM EDT THU MAY 18 2017

NYC009-013-190126-
/O.CAN.KBUF.SV.W.0027.000000T0000Z-170519T0145Z/
Cattaraugus NY-Chautauqua NY-
916 PM EDT THU MAY 18 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CATTARAUGUS AND
SOUTHERN CHAUTAUQUA COUNTIES 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 4200 7968 4211 7973 4247 7898 4214 7875
      4200 7944
TIME...MOT...LOC 0114Z 248DEG 43KT 4214 7938 

$$

Church

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 8:50 PM EDT	Special Weather Statement	BUF	Chautauqua	25 min
May 18, 9:08 PM EDT	Special Marine Warning	BUF		37 min
May 18, 11:14 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Monroe, Ontario, Oswego, Wayne	46 min
May 18, 11:27 PM EDT	Special Weather Statement	BUF	Ontario	33 min
May 18, 11:33 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	57 min
May 18, 11:34 PM EDT	Special Marine Warning	BUF		56 min
May 18, 11:49 PM EDT	Special Weather Statement	BUF	Wyoming	26 min
May 19, 12:02 AM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario, Wyoming	28 min
May 19, 12:32 AM EDT	Special Weather Statement	BUF	Wyoming	43 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.