Alert archive / New York / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 33, NWS Buffalo, NY

June 1, 2011Lewis County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 1, 2011, 4:47 AM EDT for Lewis County, New York. It was in force for 17 min. 1 report 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: Jun 1, 2011, 4:47 AM EDT (08:47 UTC)
Expired: Jun 1, 2011, 5:04 AM EDT
In force: 17 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Lewis County, NY

The radar

The Ft Drum radar (KTYX), 37 km from the middle of the area, began a volume at 08:48 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
Jun 1, 4:50 AM EDT	TSTM WND DMG	5 E Croghan, NY	TREE DOWN IN BELFORT JUST E OF CROGHAN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 8.8 hours before the alert went out and 168 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: 610 J/kg
Mixed-layer CIN: -237 J/kg
Mixed-layer LCL: 1749 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 213 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

841 
WUUS51 KBUF 010847
SVRBUF
NYC049-010915-
/O.NEW.KBUF.SV.W.0033.110601T0847Z-110601T0915Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
447 AM EDT WED JUN 1 2011

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL LEWIS COUNTY IN CENTRAL NEW YORK

* UNTIL 515 AM EDT

* AT 440 AM 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 NEAR
  CROGHAN...OR 25 MILES NORTH OF BOONVILLE...AND MOVING EAST AT 45
  MPH.

* THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL
  AREAS OF THE INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO 
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS 
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. 
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE 
STRUCK BY LIGHTNING.

&&

LAT...LON 4374 7516 4372 7540 4394 7544 4399 7515
      4379 7512 4375 7512
TIME...MOT...LOC 0847Z 260DEG 38KT 4385 7525

$$

TJP

1 follow-up statement

595 
WWUS51 KBUF 010904
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
504 AM EDT WED JUN 1 2011

NYC049-010914-
/O.CAN.KBUF.SV.W.0033.000000T0000Z-110601T0915Z/
LEWIS NY-
504 AM EDT WED JUN 1 2011

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

AT 504 AM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED THE WARNED AREA...
THUS THE WARNING HAS BEEN CANCELLED.

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS ARE 
STILL POSSIBLE OVER THE FAR EASTERN PART OF THE COUNTY. 

LAT...LON 4374 7516 4372 7540 4394 7544 4399 7515
      4379 7512 4375 7512
TIME...MOT...LOC 0904Z 260DEG 38KT 4387 7500

$$

TJP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 1, 3:21 AM EDT	Special Marine Warning	BUF		54 min
Jun 1, 3:24 AM EDT	Special Weather Statement	BUF	Oswego	66 min
Jun 1, 4:26 AM EDT	Special Weather Statement	BUF	Lewis	64 min
Jun 1, 9:05 AM EDT	Special Weather Statement	BUF	Allegany	25 min

Nearby

Severe Thunderstorm Warnings in New York, 2011 Every severe thunderstorm warning in 2011

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.