Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS Burlington, VT

May 29, 2012Essex County, Franklin County, St. Lawrence County, New York

NWS Burlington, VT issued this severe thunderstorm warning at May 29, 2012, 12:57 PM EDT for Essex County, Franklin County, St. Lawrence County, New York. It was in force for 63 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: May 29, 2012, 12:57 PM EDT (16:57 UTC)
Expired: May 29, 2012, 2:00 PM EDT
In force: 63 min
Issued by: NWS Burlington, VT
Area: Storm-based polygon

Counties Essex County, NY, Franklin County, NY, St. Lawrence County, NY

The radar

The Burlington radar (KCXX), 104 km from the middle of the area, began a volume at 16:59 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, 1:35 PM EDT	TSTM WND DMG	Keene Valley, NY	TREE DOWN ON POWER LINE. REPORTED BY ESSEX COUNTY DISPATCH.

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, 12:26 PM EDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 5.0 hours before the alert went out and 156 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.

241 
WUUS51 KBTV 291657
SVRBTV
NYC031-033-089-291800-
/O.NEW.KBTV.SV.W.0013.120529T1657Z-120529T1800Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
1257 PM EDT TUE MAY 29 2012

THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL ESSEX COUNTY IN NORTHERN NEW YORK...
  SOUTH CENTRAL FRANKLIN COUNTY IN NORTHERN NEW YORK...
  SOUTHEASTERN ST. LAWRENCE COUNTY IN NORTHERN NEW YORK...

* UNTIL 200 PM EDT.

* AT 1254 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER HAIL AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THE STORM WAS NEAR LONG LAKE...
  MOVING EAST AT 25 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO...
  NEWCOMB...MOUNT MARCY...LAKE PLACID...KEENE VALLEY...UNDERWOOD...

THIS SEVERE THUNDERSTORM IS ALSO PRODUCING DEADLY CLOUD TO GROUND
LIGHTNING.

WHEN YOU CAN DO SO SAFELY...PLEASE REPORT DAMAGING WINDS OR HAIL TO
THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...1 800 8 6 3 4 2 7
9...OR BY SUBMITTING A STORM REPORT AT WEATHER.GOV/BURLINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET TO SAFETY IMMEDIATELY WHEN THREATENING WEATHER APPROACHES. WINDS
MAY KNOCK DOWN TREES AND POWER LINES AND DAMAGE BUILDINGS. LARGE HAIL
MAY CAUSE INJURY AND DAMAGE PROPERTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM TUESDAY EVENING FOR
NORTHERN NEW YORK AND VERMONT.

&&

LAT...LON 4393 7434 4397 7426 4411 7429 4408 7463
      4408 7468 4409 7470 4419 7453 4434 7371
      4392 7358 4391 7433
TIME...MOT...LOC 1657Z 252DEG 21KT 4403 7429

$$
BOYD

The office that day

Everything else NWS Burlington, VT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 28, 11:46 PM EDT	Special Weather Statement	BTV	Essex	59 min
May 29, 2:29 AM EDT	Severe Thunderstorm Warning	BTV	Essex	41 min
May 29, 4:12 AM EDT	Special Weather Statement	BTV	Essex	63 min
May 29, 4:28 AM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex, Franklin	62 min
May 29, 5:05 AM EDT	Severe Thunderstorm Warning	BTV	Clinton	55 min
May 29, 6:26 AM EDT	Severe Thunderstorm Warning	BTV	Essex	64 min
May 29, 7:07 AM EDT	Flash Flood Watch	BTV	Clinton, Essex, Franklin, St. Lawrence	15 hr
May 29, 12:56 PM EDT	Severe Thunderstorm Warning	BTV	Clinton	34 min
May 29, 1:51 PM EDT	Severe Thunderstorm Warning	BTV	Essex	84 min
May 29, 1:56 PM EDT	Severe Thunderstorm Warning	BTV	Essex	64 min
May 29, 2:15 PM EDT	Special Weather Statement	BTV	Essex	3 hr
May 29, 2:18 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex, Franklin	57 min
May 29, 2:31 PM EDT	Severe Thunderstorm Warning	BTV	Essex	23 min
May 29, 2:39 PM EDT	Severe Thunderstorm Warning	BTV	Essex, Franklin, St. Lawrence	66 min
May 29, 2:46 PM EDT	Severe Thunderstorm Warning	BTV	Essex	59 min
May 29, 2:59 PM EDT	Flash Flood Warning	BTV	Essex	4 hr
May 29, 3:09 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex	66 min
May 29, 3:41 PM EDT	Severe Thunderstorm Warning	BTV	Essex	64 min
May 29, 3:43 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex	47 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.