Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 26, NWS Buffalo, NY

May 18, 2017Lewis County, Oswego County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 18, 2017, 6:17 PM EDT for Lewis County, Oswego County, New York. It was in force for 28 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: May 18, 2017, 6:17 PM EDT (22:17 UTC)
Expired: May 18, 2017, 6:45 PM EDT
In force: 28 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Lewis County, NY, Oswego County, NY

The radar

The Ft Drum radar (KTYX), 28 km from the middle of the area, began a volume at 22:21 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 18, 6:21 PM EDT	HAIL 1.75	Altmar, NY

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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

Albany, NY (KALY), launched 12:00Z, 10.3 hours before the alert went out and 181 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: 2076 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 116 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

830 
WUUS51 KBUF 182217
SVRBUF
NYC049-075-182245-
/O.NEW.KBUF.SV.W.0026.170518T2217Z-170518T2245Z/

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

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Southwestern Lewis County in central New York...
  Northeastern Oswego County in central New York...

* Until 645 PM EDT.

* At 617 PM EDT, a severe thunderstorm was located 7 miles southeast
  of Pulaski, or 13 miles southeast of Sandy Island Beach State Park,
  moving northeast at 55 mph.

  HAZARD...Golf ball size hail and 60 mph wind gusts. 

  SOURCE...Trained weather spotters. 

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to trees and power lines. 

* Locations impacted include...
  Pulaski, Redfield, Whetstone Gulf State Park, Highmarket, Richland,
  Williamstown, Orwell and Parish.

This includes Interstate 81 between exits 33 and 35.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4342 7553 4348 7581 4338 7586 4336 7609
      4352 7620 4378 7557 4372 7547
TIME...MOT...LOC 2217Z 242DEG 50KT 4348 7603 

HAIL...1.75IN
WIND...60MPH
 
$$

Church

2 follow-up statements

914 
WWUS51 KBUF 182234
SVSBUF

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

NYC049-075-182245-
/O.CON.KBUF.SV.W.0026.000000T0000Z-170518T2245Z/
Lewis NY-Oswego NY-
634 PM EDT THU MAY 18 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTHWESTERN LEWIS AND NORTHEASTERN OSWEGO COUNTIES...

At 634 PM EDT, a severe thunderstorm was located near Redfield, or 17
miles north of Camden, moving northeast at 60 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...
Redfield, Highmarket, Whetstone Gulf State Park, Osceola, North
Osceola and Swancott Mill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4342 7553 4348 7581 4362 7595 4378 7557
      4372 7547
TIME...MOT...LOC 2234Z 242DEG 50KT 4359 7574 

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

Church

991 
WWUS51 KBUF 182243
SVSBUF

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

NYC049-075-182253-
/O.EXP.KBUF.SV.W.0026.000000T0000Z-170518T2245Z/
Lewis NY-Oswego NY-
643 PM EDT THU MAY 18 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN LEWIS AND
NORTHEASTERN OSWEGO COUNTIES WILL EXPIRE AT 645 PM EDT...
                
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 will be allowed to expire.  However small hail
and gusty winds are still possible with this thunderstorm.

A severe thunderstorm watch remains in effect until 1100 PM EDT for
central New York.

LAT...LON 4342 7553 4348 7581 4362 7595 4378 7557
      4372 7547
TIME...MOT...LOC 2243Z 242DEG 50KT 4364 7561 

$$

Church

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 1:35 PM EDT	Special Weather Statement	BUF	Chautauqua	25 min
May 18, 1:38 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	52 min
May 18, 2:36 PM EDT	Special Weather Statement	BUF	Wyoming	24 min
May 18, 2:41 PM EDT	Special Weather Statement	BUF	Ontario	34 min
May 18, 3:13 PM EDT	Special Weather Statement	BUF	Wyoming	32 min
May 18, 3:17 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Erie, Wyoming	43 min
May 18, 3:22 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario, Wayne	38 min
May 18, 3:51 PM EDT	Special Weather Statement	BUF	Livingston, Ontario	24 min
May 18, 3:57 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario, Wyoming	48 min
May 18, 4:05 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	40 min
May 18, 4:39 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	51 min
May 18, 5:25 PM EDT	Special Weather Statement	BUF	Cayuga	35 min
May 18, 5:28 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	47 min
May 18, 5:41 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	64 min
May 18, 5:51 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	39 min
May 18, 6:17 PM EDT	Special Weather Statement	BUF	Allegany	28 min
May 18, 6:45 PM EDT	Special Weather Statement	BUF	Lewis	45 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.