Alert archive / New York / Tornado Warnings in 2023

Tornado Warning 4, NWS Buffalo, NY

August 7, 2023Lewis County, New York

NWS Buffalo, NY issued this tornado warning at Aug 7, 2023, 8:07 PM EDT for Lewis County, New York. It was in force for 38 min. 3 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 7, 2023, 8:07 PM EDT (00:07 UTC)
Expired: Aug 7, 2023, 8:45 PM EDT
In force: 38 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Lewis County, NY

The radar

The Ft Drum radar (KTYX), 30 km from the middle of the area, began a volume at 00:05 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 7, 8:10 PM EDT	TSTM WND DMG	1 Nnw Turin, NY	Tree in roof.
Aug 7, 8:12 PM EDT	TSTM WND DMG	1 Nnw Turin, NY	Significant damage to business on State Route 26 north of Turin. Sheriffs Department is on scene.
Aug 7, 8:14 PM EDT	TORNADO	1 Nnw Turin, NY	End of tornadic damage on the north side of Turin.

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

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 0.1 hours before the alert went out and 288 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: 134 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

411 
WFUS51 KBUF 080007
TORBUF
NYC049-080045-
/O.NEW.KBUF.TO.W.0004.230808T0007Z-230808T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Buffalo NY
807 PM EDT Mon Aug 7 2023

The National Weather Service in Buffalo has issued a

* Tornado Warning for...
  Southeastern Lewis County in central New York...

* Until 845 PM EDT.
    
* At 807 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Whetstone Gulf State Park, or 10 miles northwest
  of Boonville, moving northeast at 30 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Whetstone Gulf State Park, Watson, Martinsburg, Lyonsdale, Greig,
  Port Leyden, Croghan, Lyons Falls, Constableville, and Turin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4355 7536 4362 7556 4401 7531 4394 7515
      4375 7513
TIME...MOT...LOC 0007Z 211DEG 25KT 4362 7543 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

JJR

2 follow-up statements

696 
WWUS51 KBUF 080020
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
820 PM EDT Mon Aug 7 2023

NYC049-080045-
/O.CON.KBUF.TO.W.0004.000000T0000Z-230808T0045Z/
Lewis NY-
820 PM EDT Mon Aug 7 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM EDT FOR
SOUTHEASTERN LEWIS COUNTY...
        
At 819 PM EDT, a confirmed tornado was located near Whetstone Gulf
State Park, or 14 miles north of Boonville, moving northeast at 30
mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Whetstone Gulf State Park, Watson, Martinsburg, Lyonsdale, Greig,
Port Leyden, Croghan, Lyons Falls, Constableville, and Turin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4355 7536 4362 7556 4401 7531 4394 7515
      4375 7513
TIME...MOT...LOC 0019Z 211DEG 25KT 4370 7537 

TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN

$$

JJR

546 
WWUS51 KBUF 080044
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
844 PM EDT Mon Aug 7 2023

NYC049-080053-
/O.EXP.KBUF.TO.W.0004.000000T0000Z-230808T0045Z/
Lewis NY-
844 PM EDT Mon Aug 7 2023

...THE TORNADO WARNING FOR SOUTHEASTERN LEWIS COUNTY WILL EXPIRE AT
845 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However, gusty
winds are still possible with this thunderstorm.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Buffalo.

Remember, a Severe Thunderstorm Warning still remains in effect for 
a portion of Lewis County until 9:00 pm.

LAT...LON 4355 7536 4362 7556 4401 7531 4394 7515
      4375 7513
TIME...MOT...LOC 0043Z 192DEG 23KT 4386 7535 

$$

Thomas

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 9:09 PM EDT	Flash Flood Warning	BUF	Lewis, Oswego	4 hr
Aug 8, 7:01 PM EDT	Areal Flood Warning	BUF	Lewis	14 hr

Nearby

Tornado Warnings in New York, 2023 Every tornado warning in 2023 Tornadoes in 2023

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.