Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 120, NWS Buffalo, NY

August 22, 2017Jefferson County, Lewis County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 22, 2017, 5:29 PM EDT for Jefferson County, Lewis County, New York. It was in force for 61 min. 2 reports 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: Aug 22, 2017, 5:29 PM EDT (21:29 UTC)
Expired: Aug 22, 2017, 6:30 PM EDT
In force: 61 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Jefferson County, NY, Lewis County, NY

The radar

The Ft Drum radar (KTYX), 28 km from the middle of the area, began a volume at 21:33 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
Aug 22, 5:48 PM EDT	TSTM WND DMG	Watertown, NY	TREES AND WIRES DOWN
Aug 22, 6:12 PM EDT	TSTM WND DMG	Carthage, NY	TREES AND WIRES DOWN IN THE VILLAGE

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
Aug 22, 12:23 PM EDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 9.5 hours before the alert went out and 218 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: 87 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 932 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

769 
WUUS51 KBUF 222129
SVRBUF
NYC045-049-222230-
/O.NEW.KBUF.SV.W.0120.170822T2129Z-170822T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
529 PM EDT TUE AUG 22 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Jefferson County in central New York...
  Central Lewis County in central New York...

* Until 630 PM EDT.

* At 528 PM EDT, severe thunderstorms were located along a line
  extending from near Edwardsville to near Glen Park to 7 miles west
  of Stony Point, moving east at 40 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Watertown, Fort Drum, Stony Point, Carthage, Lowville, West
  Carthage, Adams and Dexter.

This includes Interstate 81 between exits 41 and 49.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 900 PM EDT for central New
York.

LAT...LON 4409 7517 4394 7515 4370 7552 4379 7629
      4383 7636 4387 7635 4384 7645 4387 7650
      4408 7607 4437 7578
TIME...MOT...LOC 2128Z 270DEG 36KT 4447 7559 4408 7598 4386 7645 

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

Church

3 follow-up statements

044 
WWUS51 KBUF 222153
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
553 PM EDT TUE AUG 22 2017

NYC045-049-222230-
/O.CON.KBUF.SV.W.0120.000000T0000Z-170822T2230Z/
Jefferson NY-Lewis NY-
553 PM EDT TUE AUG 22 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTHEASTERN JEFFERSON AND NORTHERN LEWIS COUNTIES...

At 552 PM EDT, severe thunderstorms were located along a line
extending from near De Kalb to near Herrings to near Henderson
Harbor, moving east at 40 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Watertown, Fort Drum, Carthage, Lowville, West Carthage, Herrings,
Denmark and New Bremen.

This includes Interstate 81 between exits 44 and 45, and near exit
47.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 900 PM EDT for central New
York.

LAT...LON 4409 7517 4394 7515 4375 7544 4390 7605
      4405 7587 4430 7563
TIME...MOT...LOC 2152Z 270DEG 36KT 4447 7526 4408 7566 4386 7613 

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

Church

276 
WWUS51 KBUF 222215
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
615 PM EDT TUE AUG 22 2017

NYC045-222225-
/O.CAN.KBUF.SV.W.0120.000000T0000Z-170822T2230Z/
Jefferson NY-
615 PM EDT TUE AUG 22 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JEFFERSON COUNTY
IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A tornado watch remains in effect until 900 PM EDT for central New
York.

LAT...LON 4382 7533 4395 7563 4397 7560 4397 7555
      4398 7554 4401 7555 4401 7550 4405 7549
      4406 7550 4407 7548 4409 7552 4421 7542
      4409 7517 4394 7515
TIME...MOT...LOC 2215Z 270DEG 36KT 4447 7496 4408 7536 4386 7583 

$$

NYC049-222230-
/O.CON.KBUF.SV.W.0120.000000T0000Z-170822T2230Z/
Lewis NY-
615 PM EDT TUE AUG 22 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR NORTHEASTERN LEWIS COUNTY...

At 615 PM EDT, severe thunderstorms were located along a line
extending from near Colton to 13 miles northeast of Carthage to near
Barnes Corners, moving east at 40 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Carthage, Harrisville, Croghan, Belfort, Soft Maple Reservoir, Lake
Bonaparte, Kirschnerville and Beaver Falls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 900 PM EDT for central New
York.

LAT...LON 4382 7533 4395 7563 4397 7560 4397 7555
      4398 7554 4401 7555 4401 7550 4405 7549
      4406 7550 4407 7548 4409 7552 4421 7542
      4409 7517 4394 7515
TIME...MOT...LOC 2215Z 270DEG 36KT 4447 7496 4408 7536 4386 7583 

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

Church

380 
WWUS51 KBUF 222222
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
622 PM EDT TUE AUG 22 2017

NYC049-222231-
/O.EXP.KBUF.SV.W.0120.000000T0000Z-170822T2230Z/
Lewis NY-
622 PM EDT TUE AUG 22 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LEWIS COUNTY WILL
EXPIRE AT 630 PM EDT...
    
The storms which prompted the warning have weakened below severe 
limits, and will exit the warned area. Therefore the warning will be 
allowed to expire.

A tornado watch remains in effect until 900 PM EDT for central New
York.

LAT...LON 4382 7533 4395 7563 4397 7560 4397 7555
      4398 7554 4401 7555 4401 7550 4405 7549
      4406 7550 4407 7548 4409 7552 4421 7542
      4409 7517 4394 7515
TIME...MOT...LOC 2221Z 270DEG 36KT 4447 7489 4408 7529 4386 7576 

$$

Church

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 10:39 PM EDT	Beach Hazards Statement	BUF	Chautauqua, Erie, Jefferson	23 hr
Aug 22, 4:04 AM EDT	Wind Advisory	BUF	Erie, Genesee, Niagara, Orleans	13 hr
Aug 22, 4:09 AM EDT	Lakeshore Flood Warning	BUF	Cayuga, Jefferson, Oswego, Wayne	40 hr
Aug 22, 7:16 AM EDT	Special Weather Statement	BUF	Lewis	59 min
Aug 22, 9:51 AM EDT	Special Marine Warning	BUF		54 min
Aug 22, 12:05 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	55 min
Aug 22, 12:34 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Ontario, Orleans, Wayne and 1 more	56 min
Aug 22, 12:34 PM EDT	Tornado Warning	BUF	Cattaraugus, Chautauqua	26 min
Aug 22, 12:42 PM EDT	Special Marine Warning	BUF		48 min
Aug 22, 12:44 PM EDT	Special Marine Warning	BUF		61 min
Aug 22, 12:55 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Erie, Genesee, Livingston, Wyoming	65 min
Aug 22, 1:13 PM EDT	Special Marine Warning	BUF		62 min
Aug 22, 1:23 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Monroe, Ontario, Oswego, Wayne	67 min
Aug 22, 1:27 PM EDT	Special Marine Warning	BUF		63 min
Aug 22, 1:42 PM EDT	Special Marine Warning	BUF		63 min
Aug 22, 1:53 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	67 min
Aug 22, 1:56 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston, Ontario, Wyoming	49 min
Aug 22, 2:05 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Lewis, Oswego	55 min
Aug 22, 2:12 PM EDT	Tornado Warning	BUF	Allegany, Livingston	33 min
Aug 22, 2:47 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	58 min
Aug 22, 2:48 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 1 more	57 min
Aug 22, 3:11 PM EDT	Tornado Warning	BUF	Lewis	34 min
Aug 22, 3:15 PM EDT	Tornado Warning	BUF	Lewis	30 min
Aug 22, 3:20 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Livingston, Wyoming	55 min
Aug 22, 3:45 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario, Wyoming	45 min
Aug 22, 4:28 PM EDT	Special Marine Warning	BUF		92 min
Aug 22, 4:29 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	19 min
Aug 22, 4:40 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	35 min
Aug 22, 4:53 PM EDT	Special Weather Statement	BUF	Jefferson	67 min
Aug 22, 5:10 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	35 min
Aug 22, 5:28 PM EDT	Special Marine Warning	BUF		47 min
Aug 22, 6:28 PM EDT	Special Marine Warning	BUF		32 min
Aug 22, 6:28 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	47 min
Aug 22, 7:00 PM EDT	Special Marine Warning	BUF		30 min
Aug 22, 7:13 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans, Wyoming	22 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.