Alert archive / New York / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 80, NWS Buffalo, NY

August 2, 2020Lewis County, Oswego County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 2, 2020, 2:35 PM EDT for Lewis County, Oswego County, New York. It was in force for 55 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: Aug 2, 2020, 2:35 PM EDT (18:35 UTC)
Expired: Aug 2, 2020, 3:30 PM EDT
In force: 55 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Lewis County, NY, Oswego County, NY

The radar

The Ft Drum radar (KTYX), 23 km from the middle of the area, began a volume at 18:34 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 2, 2:45 PM EDT	TSTM WND DMG	2 Ne Wetmore, NY	LARGE TREE DOWN ACROSS CENTERVILLE RD

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

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 6.6 hours before the alert went out and 171 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: 60 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 925 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

653 
WUUS51 KBUF 021835
SVRBUF
NYC049-075-021930-
/O.NEW.KBUF.SV.W.0080.200802T1835Z-200802T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
235 PM EDT Sun Aug 2 2020

The National Weather Service in Buffalo has issued a

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

* Until 330 PM EDT..

* At 235 PM EDT, a severe thunderstorm was located 8 miles south of 
  Highmarket, or 10 miles west of Boonville, moving northeast at 35 
  mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4342 7553 4348 7581 4347 7583 4349 7589
      4388 7566 4378 7513 4361 7511
TIME...MOT...LOC 1835Z 221DEG 28KT 4346 7554 

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

RSH

3 follow-up statements

742 
WWUS51 KBUF 021853
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
253 PM EDT Sun Aug 2 2020

NYC075-021902-
/O.CAN.KBUF.SV.W.0080.000000T0000Z-200802T1930Z/
Oswego NY-
253 PM EDT Sun Aug 2 2020

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL OSWEGO COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened.
moved out of the warned area. Therefore, the warning has been 
cancelled.

LAT...LON 4344 7548 4349 7554 4383 7541 4378 7513
      4361 7511
TIME...MOT...LOC 1852Z 220DEG 27KT 4349 7543 

$$

NYC049-021930-
/O.CON.KBUF.SV.W.0080.000000T0000Z-200802T1930Z/
Lewis NY-
253 PM EDT Sun Aug 2 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR SOUTHEASTERN LEWIS COUNTY...

At 252 PM EDT, a severe thunderstorm was located near Boonville,
moving northeast at 30 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Lyonsdale, Greig, Port Leyden, Lyons Falls, Constableville, Turin,
Mohawk Hill, West Leyden, Talcottville and Brantingham.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4344 7548 4349 7554 4383 7541 4378 7513
      4361 7511
TIME...MOT...LOC 1852Z 220DEG 27KT 4349 7543 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

RSH

814 
WWUS51 KBUF 021913
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
313 PM EDT Sun Aug 2 2020

NYC049-021930-
/O.CON.KBUF.SV.W.0080.000000T0000Z-200802T1930Z/
Lewis NY-
313 PM EDT Sun Aug 2 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR SOUTHEASTERN LEWIS COUNTY...

At 313 PM EDT, a severe thunderstorm was located 7 miles west of
McKeever, or 8 miles northeast of Boonville, moving northeast at 35
mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Lyonsdale, Port Leyden, Lyons Falls, Talcottville and Brantingham. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM EDT for central New
York.

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

&&

LAT...LON 4350 7534 4356 7541 4367 7533 4378 7513
      4361 7511
TIME...MOT...LOC 1913Z 237DEG 29KT 4359 7524 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

Hitchcock

584 
WWUS51 KBUF 021931
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
331 PM EDT Sun Aug 2 2020

NYC049-021941-
/O.EXP.KBUF.SV.W.0080.000000T0000Z-200802T1930Z/
Lewis NY-
331 PM EDT Sun Aug 2 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LEWIS COUNTY HAS
EXPIRED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been allowed to expire.

A Tornado Watch remains in effect until 1000 PM EDT for central New
York.

LAT...LON 4350 7534 4356 7541 4367 7533 4378 7513
      4361 7511
TIME...MOT...LOC 1931Z 221DEG 28KT 4366 7515 

$$

Hitchcock

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 4:17 AM EDT	Beach Hazards Statement	BUF	Cayuga, Chautauqua, Erie, Jefferson, Monroe, Niagara and 3 more	31 hr
Aug 2, 4:17 AM EDT	Lakeshore Flood Advisory	BUF	Chautauqua, Erie	22 hr
Aug 2, 2:17 PM EDT	Special Weather Statement	BUF	Lewis	43 min
Aug 2, 3:23 PM EDT	Special Weather Statement	BUF	Lewis	22 min
Aug 2, 7:36 PM EDT	Special Marine Warning	BUF		39 min

Nearby

Severe Thunderstorm Warnings in New York, 2020 Every severe thunderstorm warning in 2020

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.