Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 103, NWS Buffalo, NY

August 12, 2017Cayuga County, Oswego County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 12, 2017, 1:45 PM EDT for Cayuga County, Oswego County, Wayne County, New York. It was in force for 60 min. 7 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 12, 2017, 1:45 PM EDT (17:45 UTC)
Expired: Aug 12, 2017, 2:45 PM EDT
In force: 60 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, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 75 km from the middle of the area, began a volume at 17:44 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 12, 2:00 PM EDT	TSTM WND DMG	Hannibal, NY	TWO REPORTS OF TREES AND WIRES DOWN
Aug 12, 2:13 PM EDT	TSTM WND DMG	3 Ene South Hannibal, NY	TREES DOWN
Aug 12, 2:13 PM EDT	TSTM WND DMG	Granby Center, NY	TREES AND WIRES DOWN
Aug 12, 2:21 PM EDT	HAIL 0.5	3 S Fulton, NY
Aug 12, 2:25 PM EDT	HAIL 0.5	Palermo, NY
Aug 12, 2:36 PM EDT	TSTM WND DMG	Hastings, NY	TREES AND WIRES DOWN - TIME ESTIMATED BY RADAR
Aug 12, 2:42 PM EDT	HAIL 0.88	1 Nnw Central Square, NY	DIME TO NICKEL SIZE HAIL

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, 5.8 hours before the alert went out and 199 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: 508 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 812 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

227 
WUUS51 KBUF 121745
SVRBUF
NYC011-075-117-121845-
/O.NEW.KBUF.SV.W.0103.170812T1745Z-170812T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
145 PM EDT SAT AUG 12 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  East central Wayne County in western New York...
  Cayuga County in central New York...
  Central Oswego County in central New York...

* Until 245 PM EDT.

* At 145 PM EDT, severe thunderstorms were located along a line
  extending from near Oswego to near Fair Haven Beach State Park,
  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 trees and power lines. 

* Locations impacted include...
  Oswego, Fulton, Fair Haven Beach State Park, Central Square, Cato,
  Battle Island State Park, Hastings and Scriba.

This includes Interstate 81 between exits 32 and 35.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4320 7606 4327 7620 4324 7621 4322 7619
      4320 7621 4324 7627 4322 7626 4320 7627
      4323 7631 4323 7648 4311 7647 4317 7682
      4346 7664 4355 7591
TIME...MOT...LOC 1745Z 254DEG 23KT 4342 7659 4326 7670 

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

Church

3 follow-up statements

541 
WWUS51 KBUF 121809
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
209 PM EDT SAT AUG 12 2017

NYC117-121817-
/O.CAN.KBUF.SV.W.0103.000000T0000Z-170812T1845Z/
Wayne NY-
209 PM EDT SAT AUG 12 2017

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WAYNE COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4320 7606 4327 7620 4324 7621 4322 7619
      4320 7621 4324 7627 4322 7626 4320 7627
      4323 7631 4323 7648 4316 7647 4315 7649
      4321 7664 4348 7647 4355 7591
TIME...MOT...LOC 1807Z 261DEG 24KT 4343 7640 4327 7651 

$$

NYC011-075-121845-
/O.CON.KBUF.SV.W.0103.000000T0000Z-170812T1845Z/
Cayuga NY-Oswego NY-
209 PM EDT SAT AUG 12 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR CAYUGA AND CENTRAL OSWEGO COUNTIES...

At 207 PM EDT, severe thunderstorms were located along a line 
extending from near Battle Island State Park to near Hannibal, 
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 
         trees and power lines. 

Locations impacted include...
Oswego, Fulton, Central Square, Battle Island State Park, Hastings,
Scriba, Volney and Constantia.

This includes Interstate 81 between exits 32 and 35.
 
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 these storms.
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.

&&

LAT...LON 4320 7606 4327 7620 4324 7621 4322 7619
      4320 7621 4324 7627 4322 7626 4320 7627
      4323 7631 4323 7648 4316 7647 4315 7649
      4321 7664 4348 7647 4355 7591
TIME...MOT...LOC 1807Z 261DEG 24KT 4343 7640 4327 7651 

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

HITCHCOCK

344 
WWUS51 KBUF 121828
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
228 PM EDT SAT AUG 12 2017

NYC011-121838-
/O.CAN.KBUF.SV.W.0103.000000T0000Z-170812T1845Z/
Cayuga NY-
228 PM EDT SAT AUG 12 2017

...THE SEVERE THUNDERSTORM WARNING FOR CAYUGA COUNTY IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 4320 7606 4327 7620 4324 7621 4322 7619
      4320 7621 4324 7627 4322 7626 4320 7627
      4323 7631 4323 7648 4347 7638 4355 7591
TIME...MOT...LOC 1828Z 254DEG 23KT 4346 7624 4330 7635 

$$

NYC075-121845-
/O.CON.KBUF.SV.W.0103.000000T0000Z-170812T1845Z/
Oswego NY-
228 PM EDT SAT AUG 12 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR CENTRAL OSWEGO COUNTY...

At 228 PM EDT, severe thunderstorms were located along a line
extending from near Mexico Point State Park to near Fulton, 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 
         trees and power lines. 

Locations impacted include...
Fulton, Central Square, Hastings, Volney, Constantia, West Monroe,
Palermo and New Haven.

This includes Interstate 81 between exits 32 and 35.
 
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 these storms.
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.

&&

LAT...LON 4320 7606 4327 7620 4324 7621 4322 7619
      4320 7621 4324 7627 4322 7626 4320 7627
      4323 7631 4323 7648 4347 7638 4355 7591
TIME...MOT...LOC 1828Z 254DEG 23KT 4346 7624 4330 7635 

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

Church

127 
WWUS51 KBUF 121846
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
246 PM EDT SAT AUG 12 2017

NYC075-121855-
/O.EXP.KBUF.SV.W.0103.000000T0000Z-170812T1845Z/
Oswego NY-
246 PM EDT SAT AUG 12 2017

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL OSWEGO COUNTY HAS
EXPIRED...
    
The storms which prompted the warning have moved out of the area.
Therefore the warning has been allowed to expire. Remember, a Severe 
Thunderstorm Warning still remains in effect for southeast Oswego 
County and southwest Lewis County until 345pm.

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

LAT...LON 4320 7606 4327 7620 4324 7621 4322 7619
      4320 7621 4324 7627 4322 7626 4320 7627
      4323 7631 4323 7648 4347 7638 4355 7591
TIME...MOT...LOC 1845Z 254DEG 23KT 4349 7611 4333 7622 

$$

Church

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 11:39 PM EDT	Special Marine Warning	BUF		96 min
Aug 12, 12:20 AM EDT	Special Weather Statement	BUF	Jefferson	55 min
Aug 12, 4:38 AM EDT	Beach Hazards Statement	BUF	Chautauqua, Erie	18 hr
Aug 12, 4:39 AM EDT	Small Craft Advisory	BUF		18 hr
Aug 12, 1:19 PM EDT	Special Marine Warning	BUF		56 min
Aug 12, 1:21 PM EDT	Special Weather Statement	BUF	Ontario	24 min
Aug 12, 1:42 PM EDT	Special Weather Statement	BUF	Oswego	48 min
Aug 12, 2:40 PM EDT	Severe Thunderstorm Warning	BUF	Lewis, Oswego	65 min
Aug 12, 3:23 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	24 min
Aug 12, 3:38 PM EDT	Special Weather Statement	BUF	Niagara	37 min
Aug 12, 5:10 PM EDT	Special Weather Statement	BUF	Niagara, Orleans	50 min
Aug 12, 6:29 PM EDT	Special Marine Warning	BUF		31 min
Aug 12, 6:57 PM EDT	Special Marine Warning	BUF		63 min
Aug 12, 7:02 PM EDT	Special Weather Statement	BUF	Erie	28 min
Aug 12, 7:32 PM EDT	Special Weather Statement	BUF	Wyoming	28 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.