Alert archive / New York / Special Weather Statements in 2015

Special Weather Statement, NWS Burlington, VT

May 11, 2015St. Lawrence County, New York

NWS Burlington, VT issued this special weather statement at May 11, 2015, 1:21 PM EDT for St. Lawrence County, New York. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 11, 2015, 1:21 PM EDT (17:21 UTC)
Expired
May 11, 2015, 2:00 PM EDT
In force
39 min
Issued by
NWS Burlington, VT

County St. Lawrence County, NY

The radar

The Ft Drum radar (KTYX), 81 km from the middle of the area, began a volume at 17:22 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.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 5.4 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-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2015-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2015-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1064 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
96 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.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Burlington, VT wrote its last area forecast discussion before this special weather statement went out at May 11, 11:58 AM EDT, 1 hour 23 minutes earlier.

Area forecast discussion, May 11, 11:58 AM EDT, 1 hour 23 minutes before
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Hazardous weather outlook, May 11, 4:11 AM EDT, 9 hours 10 minutes before
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In the hours before

Special weather statement, May 11, 1:21 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
121 PM EDT MON MAY 11 2015

NYZ029-111800-
SOUTHEASTERN ST. LAWRENCE-
121 PM EDT MON MAY 11 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN ST. LAWRENCE
COUNTY IN NORTHERN NEW YORK...

AT 120 PM EDT...A STRONG THUNDERSTORM WAS NEAR STAR LAKE...MOVING
NORTHEAST AT 25 MPH.

WINDS IN EXCESS OF 40 MPH AND DIME SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS TO BE IMPACTED INCLUDE...
STAR LAKE...CRANBERRY LAKE...HORSESHOE LAKE...OSWEGATCHIE...
SHURTLEFF...ALDRICH...WANAKENA...NEWTON FALLS...LOWER OSWEGATCHIE AND
SABATTIS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 4436 7481 4409 7458 4405 7507 4416 7514
TIME...MOT...LOC 1720Z 244DEG 20KT 4411 7499

RD

The office that day

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

IssuedProductOfficeCountiesLasted
May 11, 4:04 PM EDTSpecial Weather StatementBTVAddison, Chittenden, Lamoille41 min
May 11, 4:48 PM EDTSpecial Weather StatementBTVAddison, Caledonia, Lamoille, Orange, Rutland, Washington27 min
May 11, 1:52 PM EDTSpecial Weather StatementBTVClinton23 min
May 11, 2:45 PM EDTSpecial Weather StatementBTVFranklin60 min
May 11, 6:07 PM EDTSpecial Weather StatementBTVEssex23 min
May 11, 6:19 PM EDTSevere Thunderstorm WarningBTVEssex, Franklin26 min

Nearby

Special Weather Statements in New York, 2015Every special weather statement in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.