Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 97, NWS Buffalo, NY

August 4, 2017Cayuga County, Oswego County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 4, 2017, 5:04 PM EDT for Cayuga County, Oswego County, New York. It was in force for 41 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 4, 2017, 5:04 PM EDT (21:04 UTC)
Expired: Aug 4, 2017, 5:45 PM EDT
In force: 41 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cayuga County, NY, Oswego County, NY

The radar

The Ft Drum radar (KTYX), 80 km from the middle of the area, began a volume at 21:04 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 4, 5:07 PM EDT	TSTM WND DMG	Weedsport, NY	TRAMPOLINE TOSSED ONTO ROOF OF HOUSE. PICTURE VIA MEDIA ON SOCIAL MEDIA
Aug 4, 5:20 PM EDT	TSTM WND DMG	1 E Cato, NY	TREE ON A HOUSE. PHOTO FROM SOCIAL MEDIA.

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 4, 1:25 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.1 hours before the alert went out and 195 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: 243 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 895 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 179 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted.

046 
WUUS51 KBUF 042104
SVRBUF
NYC011-075-042145-
/O.NEW.KBUF.SV.W.0097.170804T2104Z-170804T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
504 PM EDT FRI AUG 4 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Cayuga County in central New York...
  Southwestern Oswego County in central New York...

* Until 545 PM EDT.

* At 504 PM EDT, a severe thunderstorm was located over Weedsport, or
  7 miles north of Auburn, moving northeast at 40 mph.

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

  SOURCE...Radar indicated. 

  IMPACT...Minor damage to vehicles is possible. Expect wind damage 
           to trees and power lines. 

* Locations impacted include...
  Fulton, Central Square, Weedsport, Cato, Nine Mile Point, Battle
  Island State Park, Hastings and Scriba.

This includes the following highways...
 Interstate 90 near exit 40.
 Interstate 81 between exits 32 and 33.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4324 7614 4327 7621 4322 7619 4320 7621
      4324 7627 4322 7626 4320 7627 4323 7631
      4323 7648 4315 7647 4314 7649 4311 7647
      4310 7650 4303 7650 4303 7668 4355 7639
      4339 7598
TIME...MOT...LOC 2104Z 213DEG 34KT 4304 7654 

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

Smith

2 follow-up statements

029 
WWUS51 KBUF 042127
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
527 PM EDT FRI AUG 4 2017

NYC011-042137-
/O.CAN.KBUF.SV.W.0097.000000T0000Z-170804T2145Z/
Cayuga NY-
527 PM EDT FRI AUG 4 2017

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

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

LAT...LON 4324 7614 4327 7620 4327 7621 4324 7621
      4322 7619 4320 7622 4324 7627 4322 7626
      4320 7627 4323 7631 4323 7648 4326 7648
      4326 7654 4355 7639 4339 7598
TIME...MOT...LOC 2127Z 211DEG 37KT 4325 7636 

$$

NYC075-042145-
/O.CON.KBUF.SV.W.0097.000000T0000Z-170804T2145Z/
Oswego NY-
527 PM EDT FRI AUG 4 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR SOUTHWESTERN OSWEGO COUNTY...

At 527 PM EDT, a severe thunderstorm was located near Fulton, moving
northeast at 45 mph.

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

SOURCE...Radar indicated. 

IMPACT...Minor damage to vehicles is possible. Expect wind damage to 
         trees and power lines. 

Locations impacted include...
Fulton, Central Square, Nine Mile Point, Battle Island State Park,
Hastings, Scriba, Volney and Palermo.

This includes Interstate 81 between exits 32 and 33.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4324 7614 4327 7620 4327 7621 4324 7621
      4322 7619 4320 7622 4324 7627 4322 7626
      4320 7627 4323 7631 4323 7648 4326 7648
      4326 7654 4355 7639 4339 7598
TIME...MOT...LOC 2127Z 211DEG 37KT 4325 7636 

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

Smith

315 
WWUS51 KBUF 042148
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
548 PM EDT FRI AUG 4 2017

NYC075-042158-
/O.EXP.KBUF.SV.W.0097.000000T0000Z-170804T2145Z/
Oswego NY-
548 PM EDT FRI AUG 4 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN OSWEGO COUNTY HAS
EXPIRED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been allowed to expire.  However gusty
winds are still possible with this thunderstorm.

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

LAT...LON 4324 7614 4327 7620 4327 7621 4324 7621
      4322 7619 4320 7622 4324 7627 4322 7626
      4320 7627 4323 7631 4323 7648 4326 7648
      4326 7654 4355 7639 4339 7598
TIME...MOT...LOC 2148Z 213DEG 34KT 4340 7623 

$$

Smith

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 9:28 PM EDT	Small Craft Advisory	BUF		54 hr
Aug 4, 8:45 AM EDT	Special Weather Statement	BUF	Wayne	30 min
Aug 4, 8:52 AM EDT	Special Marine Warning	BUF		53 min
Aug 4, 11:40 AM EDT	Special Marine Warning	BUF		65 min
Aug 4, 11:53 AM EDT	Special Weather Statement	BUF	Wayne	37 min
Aug 4, 12:22 PM EDT	Special Marine Warning	BUF		53 min
Aug 4, 12:27 PM EDT	Severe Thunderstorm Warning	BUF	Erie	63 min
Aug 4, 12:55 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	50 min
Aug 4, 1:05 PM EDT	Severe Thunderstorm Warning	BUF	Genesee	31 min
Aug 4, 1:08 PM EDT	Special Marine Warning	BUF		52 min
Aug 4, 1:13 PM EDT	Severe Thunderstorm Warning	BUF	Niagara, Orleans	62 min
Aug 4, 1:41 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Wyoming	49 min
Aug 4, 1:59 PM EDT	Special Marine Warning	BUF		61 min
Aug 4, 3:00 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	45 min
Aug 4, 3:22 PM EDT	Special Marine Warning	BUF		53 min
Aug 4, 3:38 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	57 min
Aug 4, 3:42 PM EDT	Special Marine Warning	BUF		63 min
Aug 4, 4:02 PM EDT	Special Marine Warning	BUF		118 min
Aug 4, 4:14 PM EDT	Special Marine Warning	BUF		61 min
Aug 4, 4:17 PM EDT	Special Marine Warning	BUF		88 min
Aug 4, 4:26 PM EDT	Special Marine Warning	BUF		34 min
Aug 4, 4:27 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Oswego	33 min
Aug 4, 4:45 PM EDT	Special Marine Warning	BUF		2 hr
Aug 4, 4:46 PM EDT	Special Marine Warning	BUF		89 min
Aug 4, 5:00 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara	45 min
Aug 4, 5:23 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston	67 min
Aug 4, 5:39 PM EDT	Special Marine Warning	BUF		36 min
Aug 4, 5:51 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	54 min
Aug 4, 6:38 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	52 min
Aug 4, 7:09 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	66 min
Aug 4, 7:15 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Ontario, Oswego, Wayne	60 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.