Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 107, NWS Buffalo, NY

August 22, 20177 counties in New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 22, 2017, 12:34 PM EDT for 7 counties in New York. It was in force for 56 min. 5 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 22, 2017, 12:34 PM EDT (16:34 UTC)
Expired: Aug 22, 2017, 1:30 PM EDT
In force: 56 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Genesee County, NY, Livingston County, NY, Monroe County, NY, Ontario County, NY, Orleans County, NY, Wayne County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 72 km from the middle of the area, began a volume at 16:38 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 22, 1:00 PM EDT	MARINE TSTM WIND 41	Rochester, NY
Aug 22, 1:17 PM EDT	TSTM WND DMG	Irondequoit, NY	WIRES DOWN ON LASER STREET.
Aug 22, 1:19 PM EDT	TSTM WND DMG	2 N Henrietta, NY	WIRES DOWN AND BLOCKING BRIGHTON HENRIETTA TOWN LINE ROAD/CLAY ROAD
Aug 22, 1:30 PM EDT	TSTM WND DMG	3 W Walworth, NY	POWER WIRES DOWN.
Aug 22, 1:35 PM EDT	TSTM WND DMG	Williamson, NY	TREES DOWN.

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 22, 12:23 PM EDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 4.6 hours before the alert went out and 69 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: 435 J/kg
Mixed-layer CIN: -95 J/kg
Mixed-layer LCL: 1187 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 140 m²/s²
0-3 km storm-relative helicity: 133 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted.

826 
WUUS51 KBUF 221634
SVRBUF
NYC037-051-055-069-073-117-121-221730-
/O.NEW.KBUF.SV.W.0107.170822T1634Z-170822T1730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1234 PM EDT TUE AUG 22 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Western Wayne County in western New York...
  Northern Wyoming County in western New York...
  Northern Livingston County in western New York...
  Southeastern Orleans County in western New York...
  Monroe County in western New York...
  Genesee County in western New York...
  Northwestern Ontario County in western New York...

* Until 130 PM EDT.

* At 1234 PM EDT, severe thunderstorms were located along a line
  extending from near Batavia to near Varysburg, moving northeast at
  55 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Rochester, Greece, Irondequoit, Chili, Batavia, Brockport, Geneseo
  and East Rochester.

This includes the following highways...
 Interstate 390 between exits 7 and 12.
 Interstate 90 between exits 48 and 44.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 900 PM EDT for western New
York.

LAT...LON 4273 7846 4307 7827 4333 7766 4328 7754
      4332 7738 4333 7713 4275 7738 4267 7847
TIME...MOT...LOC 1634Z 243DEG 48KT 4297 7817 4277 7838 

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

Church

2 follow-up statements

924 
WWUS51 KBUF 221704
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
104 PM EDT TUE AUG 22 2017

NYC073-121-221713-
/O.CAN.KBUF.SV.W.0107.000000T0000Z-170822T1730Z/
Wyoming NY-Orleans NY-
104 PM EDT TUE AUG 22 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WYOMING AND
SOUTHEASTERN ORLEANS COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled. Remember a Severe 
Thunderstorm Warning remains in effect for Wyoming County.

A tornado watch remains in effect until 900 PM EDT for western New
York.

LAT...LON 4297 7798 4333 7766 4328 7754 4332 7738
      4333 7713 4275 7738 4273 7779
TIME...MOT...LOC 1703Z 243DEG 48KT 4314 7772 4294 7793 

$$

NYC037-051-055-069-117-221730-
/O.CON.KBUF.SV.W.0107.000000T0000Z-170822T1730Z/
Wayne NY-Livingston NY-Monroe NY-Genesee NY-Ontario NY-
104 PM EDT TUE AUG 22 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM EDT
FOR WESTERN WAYNE...NORTHEASTERN LIVINGSTON...MONROE...EAST CENTRAL
GENESEE AND NORTHWESTERN ONTARIO COUNTIES...

At 103 PM EDT, severe thunderstorms were located along a line
extending from Gates-North Gates to near Le Roy, moving northeast at
55 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

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

Locations impacted include...
Rochester, Greece, Irondequoit, Chili, Geneseo, East Rochester,
Webster and Fairport.

This includes the following highways...
 Interstate 390 between exits 8 and 12.
 Interstate 90 between exits 46 and 44.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 900 PM EDT for western New
York.

LAT...LON 4297 7798 4333 7766 4328 7754 4332 7738
      4333 7713 4275 7738 4273 7779
TIME...MOT...LOC 1703Z 243DEG 48KT 4314 7772 4294 7793 

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

Church

915 
WWUS51 KBUF 221725
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
125 PM EDT TUE AUG 22 2017

NYC037-051-055-069-117-221734-
/O.EXP.KBUF.SV.W.0107.000000T0000Z-170822T1730Z/
Wayne NY-Livingston NY-Monroe NY-Genesee NY-Ontario NY-
125 PM EDT TUE AUG 22 2017

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN WAYNE...NORTHEASTERN
LIVINGSTON...MONROE...EAST CENTRAL GENESEE AND NORTHWESTERN ONTARIO
COUNTIES WILL EXPIRE AT 130 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning will be allowed to expire. Remember, a Severe 
Thunderstorm Warning still remains in effect for eastern Monroe... 
Wayne and Ontario counties.

A tornado watch remains in effect until 900 PM EDT for western New
York.

LAT...LON 4297 7798 4333 7766 4328 7754 4332 7738
      4333 7713 4275 7738 4273 7779
TIME...MOT...LOC 1724Z 243DEG 48KT 4326 7740 4306 7761 

$$

Church

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 10:39 PM EDT	Beach Hazards Statement	BUF	Chautauqua, Erie, Jefferson	23 hr
Aug 22, 4:04 AM EDT	Wind Advisory	BUF	Erie, Genesee, Niagara, Orleans	13 hr
Aug 22, 4:09 AM EDT	Lakeshore Flood Warning	BUF	Cayuga, Jefferson, Oswego, Wayne	40 hr
Aug 22, 7:16 AM EDT	Special Weather Statement	BUF	Lewis	59 min
Aug 22, 9:51 AM EDT	Special Marine Warning	BUF		54 min
Aug 22, 12:05 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	55 min
Aug 22, 12:34 PM EDT	Tornado Warning	BUF	Cattaraugus, Chautauqua	26 min
Aug 22, 12:42 PM EDT	Special Marine Warning	BUF		48 min
Aug 22, 12:44 PM EDT	Special Marine Warning	BUF		61 min
Aug 22, 12:55 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Erie, Genesee, Livingston, Wyoming	65 min
Aug 22, 1:13 PM EDT	Special Marine Warning	BUF		62 min
Aug 22, 1:23 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Monroe, Ontario, Oswego, Wayne	67 min
Aug 22, 1:27 PM EDT	Special Marine Warning	BUF		63 min
Aug 22, 1:42 PM EDT	Special Marine Warning	BUF		63 min
Aug 22, 1:53 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	67 min
Aug 22, 1:56 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston, Ontario, Wyoming	49 min
Aug 22, 2:05 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Lewis, Oswego	55 min
Aug 22, 2:12 PM EDT	Tornado Warning	BUF	Allegany, Livingston	33 min
Aug 22, 2:47 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	58 min
Aug 22, 2:48 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 1 more	57 min
Aug 22, 3:11 PM EDT	Tornado Warning	BUF	Lewis	34 min
Aug 22, 3:15 PM EDT	Tornado Warning	BUF	Lewis	30 min
Aug 22, 3:20 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Livingston, Wyoming	55 min
Aug 22, 3:45 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario, Wyoming	45 min
Aug 22, 4:28 PM EDT	Special Marine Warning	BUF		92 min
Aug 22, 4:29 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	19 min
Aug 22, 4:40 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	35 min
Aug 22, 4:53 PM EDT	Special Weather Statement	BUF	Jefferson	67 min
Aug 22, 5:10 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	35 min
Aug 22, 5:28 PM EDT	Special Marine Warning	BUF		47 min
Aug 22, 5:29 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	61 min
Aug 22, 6:28 PM EDT	Special Marine Warning	BUF		32 min
Aug 22, 6:28 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	47 min
Aug 22, 7:00 PM EDT	Special Marine Warning	BUF		30 min
Aug 22, 7:13 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans, Wyoming	22 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.