Alert archive / New York / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 34, NWS Buffalo, NY

July 16, 2018Ontario County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 16, 2018, 5:14 PM EDT for Ontario County, Wayne County, New York. It was in force for 61 min. 4 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 16, 2018, 5:14 PM EDT (21:14 UTC)
Expired: Jul 16, 2018, 6:15 PM EDT
In force: 61 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Ontario County, NY, Wayne County, NY

The radar

The Binghamton radar (KBGM), 120 km from the middle of the area, began a volume at 21:17 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 16, 5:20 PM EDT	TSTM WND DMG	1 S Newark, NY	TREE DOWN ON CLARK RD.
Jul 16, 5:20 PM EDT	TSTM WND DMG	2 Ne Newark, NY	TREE ON HOUSE.
Jul 16, 5:20 PM EDT	TSTM WND DMG	2 Ne Newark, NY	TREES AND WIRES DOWN ON BOWERS AND SHULER RD
Jul 16, 5:58 PM EDT	TSTM WND DMG	Rose, NY	TREES AND WIRES DOWN ON CATCHPOLE ROAD.

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 12:00Z, 9.2 hours before the alert went out and 145 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: 26 J/kg
Mixed-layer CIN: -145 J/kg
Mixed-layer LCL: 1384 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

079 
WUUS51 KBUF 162114
SVRBUF
NYC069-117-162215-
/O.NEW.KBUF.SV.W.0034.180716T2114Z-180716T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
514 PM EDT MON JUL 16 2018

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Southeastern Wayne County in western New York...
  Northeastern Ontario County in western New York...

* Until 615 PM EDT..

* At 513 PM EDT, a severe thunderstorm was located over Newark, or 10
  miles northwest of Geneva, moving east at 25 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...
  Newark, Lyons, Clifton Springs, Clyde, Phelps, Rose, Savannah and
  Wolcott.

# 

This includes Interstate 90 near exit 42.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4292 7716 4311 7716 4324 7672 4307 7671
      4306 7672 4303 7671 4301 7696 4294 7696
TIME...MOT...LOC 2113Z 248DEG 21KT 4300 7708 

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

RSH

2 follow-up statements

146 
WWUS51 KBUF 162147
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
547 PM EDT MON JUL 16 2018

NYC069-162157-
/O.CAN.KBUF.SV.W.0034.000000T0000Z-180716T2215Z/
Ontario NY-
547 PM EDT MON JUL 16 2018

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

LAT...LON 4314 7706 4324 7672 4307 7671 4306 7672
      4303 7672 4301 7697 4302 7701
TIME...MOT...LOC 2147Z 246DEG 25KT 4314 7688 

$$

NYC117-162215-
/O.CON.KBUF.SV.W.0034.000000T0000Z-180716T2215Z/
Wayne NY-
547 PM EDT MON JUL 16 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SOUTHEASTERN WAYNE COUNTY...

At 547 PM EDT, a severe thunderstorm was located near Clyde, or 16
miles north of Waterloo, moving northeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Lyons, Clyde, Rose, Savannah, Wolcott, South Butler and North Rose. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4314 7706 4324 7672 4307 7671 4306 7672
      4303 7672 4301 7697 4302 7701
TIME...MOT...LOC 2147Z 246DEG 25KT 4314 7688 

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

RSH

328 
WWUS51 KBUF 162212
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
612 PM EDT MON JUL 16 2018

NYC117-162222-
/O.EXP.KBUF.SV.W.0034.000000T0000Z-180716T2215Z/
Wayne NY-
612 PM EDT MON JUL 16 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WAYNE COUNTY WILL
EXPIRE AT 615 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However heavy rain
is 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.

LAT...LON 4314 7706 4324 7672 4307 7671 4306 7672
      4303 7672 4301 7697 4302 7701
TIME...MOT...LOC 2212Z 248DEG 21KT 4319 7670 

$$

RSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 4:17 PM EDT	Special Weather Statement	BUF	Monroe	43 min
Jul 16, 4:28 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	47 min
Jul 16, 4:46 PM EDT	Special Marine Warning	BUF		59 min
Jul 16, 4:53 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Wayne	44 min
Jul 16, 5:23 PM EDT	Special Weather Statement	BUF	Allegany	37 min
Jul 16, 5:56 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	29 min
Jul 16, 5:59 PM EDT	Special Marine Warning	BUF		34 min
Jul 16, 7:10 PM EDT	Flash Flood Warning	BUF	Allegany	3 hr
Jul 16, 7:22 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	38 min
Jul 16, 7:42 PM EDT	Special Marine Warning	BUF		63 min
Jul 16, 7:59 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	46 min

Nearby

Severe Thunderstorm Warnings in New York, 2018 Every severe thunderstorm warning in 2018

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.