Alert archive / Vermont / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 17, NWS Burlington, VT

July 19, 2015Caledonia County, Orange County, Washington County, Vermont

NWS Burlington, VT issued this severe thunderstorm warning at Jul 19, 2015, 3:46 PM EDT for Caledonia County, Orange County, Washington County, Vermont. It was in force for 59 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 19, 2015, 3:46 PM EDT (19:46 UTC)
Expired: Jul 19, 2015, 4:45 PM EDT
In force: 59 min
Issued by: NWS Burlington, VT
Area: Storm-based polygon

Counties Caledonia County, VT, Orange County, VT, Washington County, VT

The radar

The Burlington radar (KCXX), 70 km from the middle of the area, began a volume at 19:47 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 19, 2:49 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 7.8 hours before the alert went out and 173 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: 1140 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 69 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 19, 3:03 PM EDT, 43 minutes earlier.

Area forecast discussion, Jul 19, 3:03 PM EDT, 43 minutes before

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Hazardous weather outlook, Jul 19, 3:40 PM EDT, 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BURLINGTON VT
340 PM EDT SUN JUL 19 2015

NYZ026>031-034-035-087-VTZ001>012-016>019-201945-
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-
340 PM EDT SUN JUL 19 2015

...SEVERE THUNDERSTORM WATCH 442 IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.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 19, 2:24 PM EDT, 1 hour 22 minutes before

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Special weather statement, Jul 19, 2:52 PM EDT, 54 minutes before

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Special weather statement, Jul 19, 3:33 PM EDT, 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
333 PM EDT SUN JUL 19 2015

VTZ008-010-018-192030-
EASTERN ADDISON-WASHINGTON-ORANGE-
333 PM EDT SUN JUL 19 2015

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL VERMONT...

AT 330 PM EDT...AN AREA OF STRONG THUNDERSTORMS WAS NEAR ROXBURY
VERMONT...MOVING EAST-SOUTHEAST AT 35 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM ALONG WITH
TORRENTIAL DOWNPOURS AND FREQUENT LIGHTNING. THE HEAVY RAIN COULD
LEAD TO LOCALIZED FLOODING. REMEMBER...WHEN THUNDER ROARS GO INDOORS.

LOCATIONS TO BE IMPACTED INCLUDE...
BARRE...CHELSEA...ORANGE...HAVERHILL...WILLIAMSTOWN...BRADFORD...
CORINTH...BROOKFIELD...TOPSHAM...WASHINGTON...FAIRLEE...VERSHIRE...
ROXBURY...NEWBURY...WEBSTERVILLE...E F KNAPP STATE AIRPORT...CORINTH
CORNERS...TOPSHAM FOUR CORNERS...PIERMONT AND WEST FAIRLEE.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4407 7205 4404 7208 4402 7208 4401 7211
      4397 7211 4396 7210 4395 7212 4392 7212
      4389 7216 4403 7288 4424 7280 4413 7203
      4411 7206 4410 7205 4410 7203 4408 7203
TIME...MOT...LOC 1930Z 284DEG 29KT 4413 7268

EVENSON

Special weather statement, Jul 19, 3:46 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
346 PM EDT SUN JUL 19 2015

NYZ028-VTZ001-002-192030-
EASTERN CLINTON-GRAND ISLE-WESTERN FRANKLIN-
346 PM EDT SUN JUL 19 2015

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN CLINTON COUNTY IN NEW
YORK AND NORTHERN FRANKLIN COUNTRY IN VERMONT...

AT 345 PM EDT...A STRONG THUNDERSTORM WAS OVER CHAMPLAIN...MOVING
NORTHEAST AT 25 MPH.

WINDS IN EXCESS OF 40 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS TO BE IMPACTED INCLUDE...
CHAZY...MOOERS...ROUSES POINT...CHAMPLAIN...ISLE LA MOTTE...
ALBURGH...SOUTH ALBURGH...STONY POINT...REYNOLDS POINT...GOOSE BAY...
HOG ISLAND...EAST ALBURGH...CRANSKA POINT...SAVAGE POINT IN CLINTON
COUNTY...MCGREGOR POINT...WINDMILL POINT...METCALFE ISLAND...
MARTINDALE POINT...LIMEKILN POINT AND SANDY POINT.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 4501 7305 4496 7312 4483 7338 4481 7349
      4499 7366 4500 7364
TIME...MOT...LOC 1945Z 232DEG 20KT 4497 7350

RD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 8:10 AM EDT	Special Weather Statement	BTV	Essex, Lamoille, Orleans	65 min
Jul 19, 2:24 PM EDT	Special Weather Statement	BTV	Rutland	51 min
Jul 19, 2:52 PM EDT	Special Weather Statement	BTV	Grand Isle	53 min
Jul 19, 3:33 PM EDT	Special Weather Statement	BTV	Orange	57 min
Jul 19, 3:46 PM EDT	Special Weather Statement	BTV	Grand Isle	44 min
Jul 19, 3:58 PM EDT	Special Weather Statement	BTV	Franklin, Grand Isle, Lamoille	62 min
Jul 19, 5:03 PM EDT	Special Weather Statement	BTV	Lamoille, Orleans	57 min
Jul 19, 6:11 PM EDT	Severe Thunderstorm Warning	BTV	Caledonia, Essex	34 min
Jul 19, 6:54 PM EDT	Special Weather Statement	BTV	Windsor	51 min
Jul 19, 7:16 PM EDT	Special Weather Statement	BTV	Orange, Washington	59 min
Jul 19, 7:59 PM EDT	Flash Flood Warning	BTV	Caledonia, Orange, Washington	8 hr

Nearby

Severe Thunderstorm Warnings in Vermont, 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.