Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 37, NWS Buffalo, NY

June 21, 2021Lewis County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 21, 2021, 5:26 PM EDT for Lewis County, New York. It was in force for 64 min. 10 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: Jun 21, 2021, 5:26 PM EDT (21:26 UTC)
Expired: Jun 21, 2021, 6:30 PM EDT
In force: 64 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Lewis County, NY

The radar

The Ft Drum radar (KTYX), 22 km from the middle of the area, began a volume at 21:26 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
Jun 21, 5:40 PM EDT	TSTM WND DMG	2 Nne Ava, NY	TREES DOWN ON RT 26.
Jun 21, 6:03 PM EDT	TSTM WND DMG	4 Se Constableville, NY	TREES AND WIRES DOWN ON LINCOLN ST AND TREES DOWN ON DOMSER RD.
Jun 21, 6:09 PM EDT	TSTM WND DMG	2 Ne Port Leyden, NY	TREES DOWN ON MARMON RD NEAR PENNEY SETTLEMENT RD.
Jun 21, 6:09 PM EDT	TSTM WND DMG	Turin, NY	TREES DOWN ON E MAIN ST.
Jun 21, 6:10 PM EDT	TSTM WND DMG	Lowville, NY	LEWIS COUNTY DISPATCH REPORTS WIDESPREAD REPORTS OF STORM DAMAGE, PRIMARILY DOWNED TREES AND POWERLINES, ACROSS THE COUNTY. THIS INCLUDES THE TOWNS OF LOWVILLE, LYONSDALE, LEYDEN, WATSON, AND GREIG.
Jun 21, 6:11 PM EDT	TSTM WND DMG	2 Ene Lyons Falls, NY	TREES DOWN ON SEYMORE AVE, AND ON SHIBLEY RD.
Jun 21, 6:14 PM EDT	TSTM WND DMG	2 Ne Glenfield, NY	MULTIPLE TREES DOWN ON PINE GROVE RD NEAR SCHOOLHOUSE RD. POWER POLES BLOWN DOWN ON BARNES RD.
Jun 21, 6:14 PM EDT	TSTM WND DMG	2 Nnw Glenfield, NY	TREES DOWN ON BLUE ST.
Jun 21, 6:16 PM EDT	TSTM WND DMG	2 Ene Glenfield, NY	TREES DOWN NEAR PINE GROVE RD AND EATONVILLE RD. AND AT GREGG RD AND BRANTINGHAM RD.
Jun 21, 6:24 PM EDT	TSTM WND DMG	6 Nne Brantingham, NY	TREES AND WIRES DOWN ACROSS STONY LAKE ROAD.

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
Jun 21, 12:31 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 9.4 hours before the alert went out and 187 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: 524 J/kg
Mixed-layer CIN: -118 J/kg
Mixed-layer LCL: 990 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

As transmitted.

431 
WUUS51 KBUF 212126
SVRBUF
NYC049-212230-
/O.NEW.KBUF.SV.W.0037.210621T2126Z-210621T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
526 PM EDT Mon Jun 21 2021

The National Weather Service in Buffalo has issued a

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

* Until 630 PM EDT..

* At 525 PM EDT, severe thunderstorms were located along a line
  extending from near Southwick Beach State Park to near Bridgeport,
  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 roofs, siding, and trees.

* Locations impacted include...
  Carthage, Lowville, Highmarket, Whetstone Gulf State Park, Denmark,
  New Bremen, Watson, Martinsburg, Lyonsdale and Greig.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms have a history of 
producing widespread wind damage. SEEK SHELTER NOW inside a sturdy 
structure and stay away from windows! 
&&

LAT...LON 4344 7549 4388 7576 4397 7560 4397 7555
      4401 7555 4401 7550 4407 7549 4417 7533
      4410 7517 4361 7511
TIME...MOT...LOC 2125Z 245DEG 45KT 4379 7612 4321 7588 

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

Zaff

1 follow-up statement

302 
WWUS51 KBUF 212209
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
609 PM EDT Mon Jun 21 2021

NYC049-212230-
/O.CON.KBUF.SV.W.0037.000000T0000Z-210621T2230Z/
Lewis NY-
609 PM EDT Mon Jun 21 2021

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

At 608 PM EDT, severe thunderstorms were located along a line
extending from 6 miles northwest of Lowville to near Boonville,
moving northeast at 45 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Lowville, Whetstone Gulf State Park, Highmarket, New Bremen, Watson,
Martinsburg, Lyonsdale, Greig, Port Leyden and Croghan.

LAT...LON 4344 7549 4381 7568 4392 7547 4410 7517
      4361 7511
TIME...MOT...LOC 2208Z 246DEG 37KT 4387 7556 4352 7530 

HAIL...1.00IN
WIND...70MPH
 
$$

Apffel

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 9:04 PM EDT	Special Weather Statement	BUF	Livingston	26 min
Jun 20, 9:18 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Wyoming	42 min
Jun 20, 9:55 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario, Wayne	39 min
Jun 20, 11:23 PM EDT	Special Marine Warning	BUF		67 min
Jun 20, 11:23 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	52 min
Jun 21, 12:07 AM EDT	Special Marine Warning	BUF		53 min
Jun 21, 12:17 AM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	43 min
Jun 21, 12:30 AM EDT	Special Marine Warning	BUF		34 min
Jun 21, 1:47 AM EDT	Special Marine Warning	BUF		43 min
Jun 21, 2:14 AM EDT	Special Weather Statement	BUF	Erie	46 min
Jun 21, 2:30 AM EDT	Special Marine Warning	BUF		45 min
Jun 21, 2:54 AM EDT	Special Weather Statement	BUF	Erie, Genesee	51 min
Jun 21, 3:20 AM EDT	Special Marine Warning	BUF		55 min
Jun 21, 3:36 AM EDT	Special Weather Statement	BUF	Monroe, Orleans	39 min
Jun 21, 3:42 AM EDT	Special Weather Statement	BUF	Chautauqua	63 min
Jun 21, 3:50 AM EDT	Special Marine Warning	BUF		55 min
Jun 21, 4:12 AM EDT	Special Weather Statement	BUF	Chautauqua	48 min
Jun 21, 4:19 AM EDT	Special Marine Warning	BUF		26 min
Jun 21, 4:28 AM EDT	Beach Hazards Statement	BUF	Cayuga, Chautauqua, Erie, Jefferson, Monroe, Niagara and 3 more	42 hr
Jun 21, 4:31 AM EDT	Special Weather Statement	BUF	Cattaraugus, Erie, Genesee, Wyoming	44 min
Jun 21, 4:48 AM EDT	Special Marine Warning	BUF		42 min
Jun 21, 5:15 AM EDT	Special Weather Statement	BUF	Allegany, Cattaraugus, Livingston, Wyoming	75 min
Jun 21, 5:48 AM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	42 min
Jun 21, 6:25 AM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Ontario, Wayne	50 min
Jun 21, 6:33 AM EDT	Special Marine Warning	BUF		57 min
Jun 21, 6:55 AM EDT	Special Weather Statement	BUF	Oswego	50 min
Jun 21, 7:15 AM EDT	Special Marine Warning	BUF		30 min
Jun 21, 7:20 AM EDT	Special Weather Statement	BUF	Jefferson, Lewis, Oswego	55 min
Jun 21, 7:25 AM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	50 min
Jun 21, 1:31 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	43 min
Jun 21, 1:34 PM EDT	Special Marine Warning	BUF		56 min
Jun 21, 1:53 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	67 min
Jun 21, 2:01 PM EDT	Special Marine Warning	BUF		44 min
Jun 21, 2:18 PM EDT	Severe Thunderstorm Warning	BUF	Erie	42 min
Jun 21, 2:18 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	42 min
Jun 21, 2:44 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Wyoming	46 min
Jun 21, 3:07 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	53 min
Jun 21, 3:18 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Ontario, Wyoming	57 min
Jun 21, 3:55 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	50 min
Jun 21, 3:58 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Ontario, Wayne	47 min
Jun 21, 4:25 PM EDT	Special Marine Warning	BUF		77 min
Jun 21, 4:35 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	55 min
Jun 21, 5:02 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	58 min
Jun 21, 6:21 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	26 min

Nearby

Severe Thunderstorm Warnings in New York, 2021 Every severe thunderstorm warning in 2021

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.