Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 18, NWS Buffalo, NY

May 29, 2012Oswego County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 29, 2012, 12:11 PM EDT for Oswego County, New York. It was in force for 64 min. 6 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: May 29, 2012, 12:11 PM EDT (16:11 UTC)
Expired: May 29, 2012, 1:15 PM EDT
In force: 64 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Oswego County, NY

The radar

The Ft Drum radar (KTYX), 43 km from the middle of the area, began a volume at 16:13 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
May 29, 12:20 PM EDT	TSTM WND DMG	Hastings, NY	TREES AND POWERLINES DOWN
May 29, 12:20 PM EDT	HAIL 1.5	Palermo, NY
May 29, 12:30 PM EDT	HAIL 1.75	Palermo, NY
May 29, 12:31 PM EDT	HAIL 1	Parish, NY
May 29, 12:37 PM EDT	HAIL 0.88	Parish, NY
May 29, 12:50 PM EDT	HAIL 1.75	Hastings, NY	GOLF BALL SIZED HAIL REPORTED BY WSYR

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
May 29, 10:27 AM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 4.2 hours before the alert went out and 189 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: 1908 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1026 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

518 
WUUS51 KBUF 291611
SVRBUF
NYC075-291715-
/O.NEW.KBUF.SV.W.0018.120529T1611Z-120529T1715Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1211 PM EDT TUE MAY 29 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN OSWEGO COUNTY IN CENTRAL NEW YORK

* UNTIL 115 PM EDT

* AT 1207 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND   
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 9      
  MILES EAST OF FULTON...AND MOVING NORTHEAST AT 25 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  REDFIELD...
  PARISH...
  AMBOY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
TUESDAY EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4348 7581 4346 7582 4333 7588 4332 7585
      4330 7586 4330 7627 4337 7629 4363 7592
      4348 7579
TIME...MOT...LOC 1610Z 246DEG 20KT 4335 7622

$$

ZAFF

2 follow-up statements

013 
WWUS51 KBUF 291644
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1244 PM EDT TUE MAY 29 2012

NYC075-291715-
/O.CON.KBUF.SV.W.0018.000000T0000Z-120529T1715Z/
OSWEGO NY-
1244 PM EDT TUE MAY 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM EDT
FOR CENTRAL OSWEGO COUNTY...

AT 1239 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS 
LOCATED NEAR AMBOY...MOVING EAST AT 20 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  AMBOY...
  WILLIAMSTOWN...
  PARISH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
TUESDAY EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4330 7624 4334 7624 4351 7595 4348 7579
      4348 7581 4333 7588 4332 7585 4330 7586
TIME...MOT...LOC 1643Z 251DEG 17KT 4338 7603

$$

ZAFF

372 
WWUS51 KBUF 291712
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
112 PM EDT TUE MAY 29 2012

NYC075-291721-
/O.EXP.KBUF.SV.W.0018.000000T0000Z-120529T1715Z/
OSWEGO NY-
112 PM EDT TUE MAY 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL OSWEGO COUNTY WILL
EXPIRE AT 115 PM EDT...

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE
STILL POSSIBLE FROM THE THUNDERSTORM.

TRAINED SPOTTERS REPORTED 1.5 INCH HAIL NEAR PALERMO WITH THIS STORM 
AROUND 1220 PM. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
TUESDAY EVENING FOR WESTERN NEW YORK.

LAT...LON 4330 7624 4334 7624 4351 7595 4348 7579
      4348 7581 4333 7588 4332 7585 4330 7586
TIME...MOT...LOC 1711Z 251DEG 17KT 4342 7586

$$

ZAFF

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 3:51 AM EDT	Special Weather Statement	BUF	Lewis	54 min
May 29, 4:24 AM EDT	Special Weather Statement	BUF	Wyoming	66 min
May 29, 4:33 AM EDT	Special Marine Warning	BUF		27 min
May 29, 4:41 AM EDT	Special Weather Statement	BUF	Jefferson	34 min
May 29, 5:09 AM EDT	Special Weather Statement	BUF	Wyoming	36 min
May 29, 5:17 AM EDT	Special Weather Statement	BUF	Lewis	28 min
May 29, 6:34 AM EDT	Severe Thunderstorm Warning	BUF	Lewis	22 min
May 29, 11:01 AM EDT	Special Weather Statement	BUF	Chautauqua	44 min
May 29, 11:24 AM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	66 min
May 29, 11:39 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Wyoming	51 min
May 29, 12:13 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	62 min
May 29, 12:20 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Wyoming	41 min
May 29, 12:41 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	44 min
May 29, 12:47 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	58 min
May 29, 12:49 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario	41 min
May 29, 12:54 PM EDT	Special Marine Warning	BUF		36 min
May 29, 1:17 PM EDT	Severe Thunderstorm Warning	BUF	Wayne	58 min
May 29, 1:20 PM EDT	Severe Thunderstorm Warning	BUF	Lewis, Oswego	55 min
May 29, 1:24 PM EDT	Areal Flood Advisory	BUF	Oswego	3 hr
May 29, 1:27 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Livingston	63 min
May 29, 1:47 PM EDT	Severe Thunderstorm Warning	BUF	Lewis, Oswego	38 min
May 29, 2:18 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	43 min

Nearby

Severe Thunderstorm Warnings in New York, 2012 Every severe thunderstorm warning in 2012

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.