Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 40, NWS Buffalo, NY

June 15, 2017Ontario County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 15, 2017, 4:54 PM EDT for Ontario County, New York. It was in force for 66 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 15, 2017, 4:54 PM EDT (20:54 UTC)
Expired: Jun 15, 2017, 6:00 PM EDT
In force: 66 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Ontario County, NY

The radar

The Buffalo radar (KBUF), 115 km from the middle of the area, began a volume at 20:53 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.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.9 hours before the alert went out and 112 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1392 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

563 
WUUS51 KBUF 152054
SVRBUF
NYC069-152200-
/O.NEW.KBUF.SV.W.0040.170615T2054Z-170615T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
454 PM EDT THU JUN 15 2017

The National Weather Service in Buffalo has issued a

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

* Until 600 PM EDT.

* At 453 PM EDT, a severe thunderstorm was located over Bristol, or
  10 miles southwest of Canandaigua, moving east at 25 mph.

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

  SOURCE...Radar indicated. 

  IMPACT...Expect wind damage to trees and power lines. 

* Locations impacted include...
  Geneva, Canandaigua, Victor, Bristol, Clifton Springs, Phelps,
  Bloomfield and Rushville.

This includes Interstate 90 between exits 43 and 42.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4270 7753 4285 7758 4286 7755 4287 7755
      4294 7756 4294 7748 4298 7748 4301 7710
      4301 7696 4287 7696 4286 7698 4276 7698
      4276 7731 4272 7735
TIME...MOT...LOC 2053Z 254DEG 22KT 4282 7746 

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

Church

2 follow-up statements

339 
WWUS51 KBUF 152130
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
530 PM EDT THU JUN 15 2017

NYC069-152200-
/O.CON.KBUF.SV.W.0040.000000T0000Z-170615T2200Z/
Ontario NY-
530 PM EDT THU JUN 15 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR ONTARIO COUNTY...

At 530 PM EDT, a severe thunderstorm was located near Canandaigua,
moving east at 20 mph.

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

SOURCE...Radar indicated. 

IMPACT...Expect wind damage to trees and power lines. 

Locations impacted include...
Geneva, Canandaigua, Bristol, Clifton Springs, Phelps, Bloomfield,
Rushville and Honeoye.

This includes Interstate 90 between exits 43 and 42.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4270 7753 4285 7757 4287 7746 4295 7740
      4301 7710 4301 7696 4287 7696 4286 7698
      4276 7698 4276 7731 4272 7735
TIME...MOT...LOC 2130Z 256DEG 19KT 4284 7726 

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

Thomas

093 
WWUS51 KBUF 152200
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
600 PM EDT THU JUN 15 2017

NYC069-152209-
/O.EXP.KBUF.SV.W.0040.000000T0000Z-170615T2200Z/
Ontario NY-
600 PM EDT THU JUN 15 2017

...THE SEVERE THUNDERSTORM WARNING FOR ONTARIO COUNTY WILL EXPIRE AT
600 PM EDT...
                
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 will be allowed to expire.  However heavy rain 
and localized flooding is still possible with this thunderstorm.

Remember, a Severe Thunderstorm Warning still remains in effect for
southern Ontario County.

LAT...LON 4270 7753 4285 7757 4287 7746 4295 7740
      4301 7710 4301 7696 4287 7696 4286 7698
      4276 7698 4276 7731 4272 7735
TIME...MOT...LOC 2159Z 254DEG 22KT 4289 7704 

$$

Church

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 9:16 AM EDT	Special Weather Statement	BUF	Genesee	59 min
Jun 15, 10:17 AM EDT	Special Weather Statement	BUF	Livingston, Monroe	58 min
Jun 15, 11:24 AM EDT	Special Weather Statement	BUF	Ontario, Wayne	66 min
Jun 15, 11:41 AM EDT	Flash Flood Watch	BUF	Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 4 more	11 hr
Jun 15, 3:46 PM EDT	Special Weather Statement	BUF	Allegany, Cattaraugus, Livingston, Ontario, Wyoming	3 hr
Jun 15, 4:16 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	44 min
Jun 15, 4:54 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe	51 min
Jun 15, 5:19 PM EDT	Flash Flood Warning	BUF	Allegany, Cattaraugus, Livingston, Ontario, Wyoming	7 hr
Jun 15, 5:26 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	64 min
Jun 15, 5:26 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Monroe, Orleans	49 min
Jun 15, 5:46 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	29 min
Jun 15, 5:53 PM EDT	Special Marine Warning	BUF		52 min
Jun 15, 6:31 PM EDT	Special Weather Statement	BUF	Allegany	29 min
Jun 15, 6:42 PM EDT	Special Weather Statement	BUF	Monroe	63 min
Jun 15, 7:05 PM EDT	Flash Flood Warning	BUF	Livingston, Monroe, Ontario	3 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.