Alert archive / Vermont / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 23, NWS Burlington, VT

July 26, 2015Chittenden County, Vermont; Essex County, New York

NWS Burlington, VT issued this severe thunderstorm warning at Jul 26, 2015, 4:47 PM EDT for Chittenden County, Vermont; Essex County, New York. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 26, 2015, 4:47 PM EDT (20:47 UTC)
Expired: Jul 26, 2015, 5:30 PM EDT
In force: 43 min
Issued by: NWS Burlington, VT
Area: Storm-based polygon

Counties Essex County, NY, Chittenden County, VT

The radar

The Burlington radar (KCXX), 32 km from the middle of the area, began a volume at 20:49 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, 8.8 hours before the alert went out and 181 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 992 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 26, 4:21 PM EDT, 26 minutes earlier.

Area forecast discussion, Jul 26, 4:21 PM EDT, 26 minutes before

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Hazardous weather outlook, Jul 26, 3:19 AM EDT, 13 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BURLINGTON VT
319 AM EDT SUN JUL 26 2015

NYZ026>031-034-035-087-VTZ001>012-016>019-270900-
NORTHERN ST. LAWRENCE-NORTHERN FRANKLIN-EASTERN CLINTON-
SOUTHEASTERN ST. LAWRENCE-SOUTHERN FRANKLIN-WESTERN CLINTON-
WESTERN ESSEX-EASTERN ESSEX-SOUTHWESTERN ST. LAWRENCE-GRAND ISLE-
WESTERN FRANKLIN-ORLEANS-ESSEX-WESTERN CHITTENDEN-LAMOILLE-CALEDONIA-
WASHINGTON-WESTERN ADDISON-ORANGE-WESTERN RUTLAND-WINDSOR-
EASTERN FRANKLIN-EASTERN CHITTENDEN-EASTERN ADDISON-EASTERN RUTLAND-
319 AM EDT SUN JUL 26 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN NEW YORK...CENTRAL
VERMONT...NORTHEAST VERMONT...NORTHWEST VERMONT AND SOUTHERN
VERMONT.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 26, 4:26 PM EDT, 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
426 PM EDT SUN JUL 26 2015

NYZ035-VTZ005-262100-
EASTERN ESSEX-WESTERN CHITTENDEN-
426 PM EDT SUN JUL 26 2015

...A DEVELOPING THUNDERSTORM WILL AFFECT LAKE CHAMPLAIN FROM NEAR
BURLINGTON TO ESSEX NEW YORK THROUGH 500 PM...

AT 423 PM EDT...A DEVELOPING THUNDERSTORM WAS NEAR
WILLSBORO...MOVING SOUTHEAST AT 10 MPH.

WINDS IN EXCESS OF 30 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS
STORM. THIS MAY CAUSE BRIEF CHOPPY TO ROUGH CONDITIONS ON LAKE
WATERS AND POSE A NEAR TERM HAZARD TO SMALL CRAFT.

LOCATIONS TO BE IMPACTED INCLUDE...
ESSEX...SHELBURNE...CHARLOTTE...WILLSBORO...BOQUET...RED ROCK
POINT...SLED RUNNER POINT...CONVERSE BAY...MCNEIL COVE...QUAKER SMITH
POINT...BOQUET RIVER POINT...PICKET ISLAND...INDIAN BAY...SPLIT ROCK
POINT...DEAN ISLAND...WINGS POINT...HATCH POINT...LIGONIER POINT...
THOMPSONS POINT AND WHALLON BAY.

REMEMBER...LIGHTNING CAN STRIKE OUT TO 15 MILES FROM THE PARENT
THUNDERSTORM. IF YOU CAN HEAR THUNDER... YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW. DO NOT BE CAUGHT ON
THE WATER IN A THUNDERSTORM.

LAT...LON 4441 7314 4426 7327 4426 7331 4427 7331
      4425 7332 4424 7333 4424 7334 4441 7353
      4452 7335
TIME...MOT...LOC 2023Z 310DEG 7KT 4440 7336

JMG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 4:26 PM EDT	Special Weather Statement	BTV	Chittenden	34 min
Jul 26, 7:59 PM EDT	Special Weather Statement	BTV	Orange	46 min

Nearby

Severe Thunderstorm Warnings in Vermont, 2015 Severe Thunderstorm Warnings in New York, 2015 Every severe thunderstorm warning 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.