Alert archive / New York / Tornado Warnings in 2024

Tornado Warning 20, NWS Buffalo, NY

July 15, 2024Ontario County, Wayne County, New York

NWS Buffalo, NY issued this tornado warning at Jul 15, 2024, 4:40 PM EDT for Ontario County, Wayne County, New York. It was in force for 35 min. 8 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: Jul 15, 2024, 4:40 PM EDT (20:40 UTC)
Expired: Jul 15, 2024, 5:15 PM EDT
In force: 35 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Ontario County, NY, Wayne County, NY

The radar

The Binghamton radar (KBGM), 123 km from the middle of the area, began a volume at 20:40 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
Jul 15, 4:45 PM EDT	TSTM WND DMG	4 Nnw Canandaigua, NY	Multiple trees in roadway.
Jul 15, 4:45 PM EDT	HAIL 1.75	Canandaigua, NY
Jul 15, 4:48 PM EDT	TSTM WND DMG	2 Se Canandaigua, NY	Tree fell on motorhome trailer.
Jul 15, 4:48 PM EDT	TORNADO	1 Se Canandaigua, NY	A weak, short-tracked EF-0 was documented ahead of an incoming gust front. The track length was 0.7 miles. Maximum width was 75 yards. Maximum wind was 75 mph.
Jul 15, 4:56 PM EDT	TSTM WND DMG	2 Se Canandaigua, NY	Windows in house blown in and multiple trees down.
Jul 15, 5:00 PM EDT	TSTM WND DMG	2 Se Canandaigua, NY	Report from mPING: 3-inch tree limbs broken; Power poles broken.
Jul 15, 5:05 PM EDT	TSTM WND DMG	Clifton Springs, NY	Trees and large limbs down on the corner of South Street and South Dayton Avenue.
Jul 15, 5:24 PM EDT	NON-TSTM WND GST 40	Geneva, NY	Mesonet station XSEN Geneva.

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
Jul 15, 12:21 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.7 hours before the alert went out and 129 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: 823 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 513 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 39 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

014 
WFUS51 KBUF 152040
TORBUF
NYC069-117-152115-
/O.NEW.KBUF.TO.W.0020.240715T2040Z-240715T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Buffalo NY
440 PM EDT Mon Jul 15 2024

The National Weather Service in Buffalo has issued a

* Tornado Warning for...
  Southeastern Wayne County in western New York...
  Northern Ontario County in western New York...

* Until 515 PM EDT.

* At 440 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Bloomfield, or near Canandaigua, moving east at 55
  mph.

  HAZARD...Tornado and quarter size hail.

  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...
  Geneva, Canandaigua, Newark, Lyons, Bristol, Clifton Springs,
  Clyde, Phelps, Bloomfield, and Farmington.

This includes Interstate 90 between exits 42 and 43.
 
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 4284 7748 4292 7751 4316 7684 4302 7689
      4301 7696 4287 7696 4286 7698 4284 7698
TIME...MOT...LOC 2040Z 252DEG 47KT 4291 7737 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

RSH

2 follow-up statements

124 
WWUS51 KBUF 152055
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
455 PM EDT Mon Jul 15 2024

NYC069-117-152115-
/O.CON.KBUF.TO.W.0020.000000T0000Z-240715T2115Z/
Wayne NY-Ontario NY-
455 PM EDT Mon Jul 15 2024

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
SOUTHEASTERN WAYNE AND NORTHEASTERN ONTARIO COUNTIES...

At 454 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Canandaigua, moving east at 40 mph.

HAZARD...Tornado and quarter size hail.

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...
Geneva, Canandaigua, Newark, Lyons, Clifton Springs, Clyde, Phelps,
Manchester, Shortsville, and Seneca Castle.

This includes Interstate 90 between exits 42 and 43.
 
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 4286 7732 4298 7733 4316 7684 4302 7689
      4301 7696 4286 7698
TIME...MOT...LOC 2054Z 255DEG 34KT 4291 7726 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

RSH

957 
WWUS51 KBUF 152113
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
513 PM EDT Mon Jul 15 2024

NYC069-117-152122-
/O.EXP.KBUF.TO.W.0020.000000T0000Z-240715T2115Z/
Wayne NY-Ontario NY-
513 PM EDT Mon Jul 15 2024

...THE TORNADO WARNING FOR SOUTHEASTERN WAYNE AND NORTHEASTERN
ONTARIO COUNTIES WILL EXPIRE AT 515 PM EDT...

The storm which prompted the tornado warning has weakened, and no 
longer appears capable of producing a tornado. Therefore, the 
tornado warning will be allowed to expire.  However, gusty
winds and heavy rain are still likely with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
western New York.

&&

LAT...LON 4286 7732 4298 7733 4316 7684 4302 7689
      4301 7696 4286 7698
TIME...MOT...LOC 2112Z 252DEG 47KT 4298 7698 

$$

RSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 8:57 AM EDT	Small Craft Advisory	BUF		35 hr
Jul 15, 11:50 AM EDT	Special Marine Warning	BUF		55 min
Jul 15, 1:08 PM EDT	Special Marine Warning	BUF		21 min
Jul 15, 1:12 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	48 min
Jul 15, 1:50 PM EDT	Special Weather Statement	BUF	Genesee	40 min
Jul 15, 1:54 PM EDT	Special Marine Warning	BUF		66 min
Jul 15, 1:56 PM EDT	Special Marine Warning	BUF		49 min
Jul 15, 2:07 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua, Erie	53 min
Jul 15, 2:09 PM EDT	Special Marine Warning	BUF		36 min
Jul 15, 2:22 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans	53 min
Jul 15, 2:49 PM EDT	Special Marine Warning	BUF		41 min
Jul 15, 2:53 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Wyoming	67 min
Jul 15, 3:06 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Erie, Wyoming	54 min
Jul 15, 3:08 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Monroe, Niagara, Orleans	27 min
Jul 15, 3:30 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BUF	Genesee, Livingston, Monroe, Wyoming	60 min
Jul 15, 3:31 PM EDT	Beach Hazards Statement	BUF	Chautauqua, Erie	28 hr
Jul 15, 3:49 PM EDT	Tornado Warning	BUF	Genesee, Livingston, Wyoming	26 min
Jul 15, 4:07 PM EDT	Flash Flood Warning	BUF	Erie, Genesee, Wyoming	4 hr
Jul 15, 4:17 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BUF	Livingston, Monroe, Ontario, Wayne	58 min
Jul 15, 4:51 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BUF	Cayuga, Ontario, Oswego, Wayne	54 min
Jul 15, 4:55 PM EDT	Flash Flood Warning	BUF	Genesee, Livingston, Monroe, Ontario, Wyoming	4 hr
Jul 15, 5:26 PM EDT	Special Marine Warning	BUF		64 min
Jul 15, 5:42 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	63 min
Jul 15, 6:24 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BUF	Lewis, Oswego	66 min
Jul 15, 7:20 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BUF	Lewis, Oswego	55 min

Nearby

Tornado Warnings in New York, 2024 Every tornado warning in 2024 Tornadoes in 2024

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.