Alert archive / Vermont / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 67, NWS Burlington, VT

July 19, 2008Windsor County, Vermont

NWS Burlington, VT issued this severe thunderstorm warning at Jul 19, 2008, 3:59 PM EDT for Windsor County, Vermont. It was in force for 31 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, 2008, 3:59 PM EDT (19:59 UTC)
Expired
Jul 19, 2008, 4:30 PM EDT
In force
31 min
Issued by
NWS Burlington, VT
Area
Storm-based polygon

County Windsor County, VT

The radar

The Burlington radar (KCXX), 113 km from the middle of the area, began a volume at 19:59 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.

The watch it was issued in

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

IssuedProductOfficeLasted
Jul 19, 1:26 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 8.0 hours before the alert went out and 141 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 2008-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 543 joules per kilogram.LCLLFCEL10008507005003002001001 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 2008-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 66 square meters per square second.19395878Sfc1 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
543 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1099 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
66 m²/s²
0-3 km storm-relative helicity
118 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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, 3:34 PM EDT, 25 minutes earlier.

Area forecast discussion, Jul 19, 3:34 PM EDT, 25 minutes before
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Hazardous weather outlook, Jul 19, 1:38 PM EDT, 2 hours 21 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BURLINGTON VT
138 PM EDT SAT JUL 19 2008

NYZ026>031-087-VTZ001>008-016-017-201745-
NORTHERN ST. LAWRENCE-NORTHERN FRANKLIN-EASTERN CLINTON-
SOUTHEASTERN ST. LAWRENCE-SOUTHERN FRANKLIN-WESTERN CLINTON-
SOUTHWESTERN ST. LAWRENCE-GRAND ISLE-WESTERN FRANKLIN-ORLEANS-ESSEX-
WESTERN CHITTENDEN-LAMOILLE-CALEDONIA-WASHINGTON-EASTERN FRANKLIN-
EASTERN CHITTENDEN-
138 PM EDT SAT JUL 19 2008

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE
HIGHER TERRAIN OF NORTHERN NEW YORK...AS WELL AS THE HIGHER
TERRAIN OF CENTRAL AND SOUTHERN VERMONT BY 1 PM THIS AFTERNOON.
THESE STORMS WILL INCREASE IN AREAL COVERAGE AND INTENSITY AS THEY
TRACK SOUTHEAST ACROSS CENTRAL AND SOUTHERN VERMONT...THROUGH THE
AFTERNOON HOURS.

THESE STORMS WILL BE CAPABLE OF PRODUCING GUSTY WINDS...SMALL
HAIL...FREQUENT CLOUD TO GROUND LIGHTNING...AND BRIEF HEAVY DOWN
POURS. RAINFALL AMOUNTS IN THE STRONGEST STORMS WILL BE ONE TO TWO
INCHES...WHICH COMBINED WITH YESTERDAYS RAINFALL...COULD PRODUCE
MINOR POOR DRAINAGE AND LOW LYING FLOODING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

ADDITIONAL UPPER LEVEL ENERGY WILL AFFECT THE AREA ON SUNDAY AND
MONDAY WITH A RETURN OF A MORE WIDESPREAD THREAT OF SHOWERS AND
THUNDERSTORMS. DUE TOP CONTINUED HIGH MOISTURE LEVELS ACROSS THE
AREA...LOCALLY HEAVY RAINFALL IS POSSIBLE WHICH MAY AGGRAVATE
RUNOFF DUE TO NEAR SATURATED SOIL CONDITIONS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY NOT BE NEEDED.

NYZ034-035-VTZ009>012-018-019-201745-
WESTERN ESSEX-EASTERN ESSEX-WESTERN ADDISON-ORANGE-WESTERN RUTLAND-
WINDSOR-EASTERN ADDISON-EASTERN RUTLAND-
138 PM EDT SAT JUL 19 2008

...SEVERE THUNDERSTORM WATCH 702 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN NEW YORK...CENTRAL
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...SUNDAY THROUGH FRIDAY

ADDITIONAL UPPER LEVEL ENERGY WILL AFFECT THE AREA ON SUNDAY AND
MONDAY WITH A RETURN OF A MORE WIDESPREAD THREAT OF SHOWERS AND
THUNDERSTORMS. DUE TOP CONTINUED HIGH MOISTURE LEVELS ACROSS THE
AREA...LOCALLY HEAVY RAINFALL IS POSSIBLE WHICH MAY AGGRAVATE
RUNOFF DUE TO NEAR SATURATED SOIL CONDITIONS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON.

In the hours before

Special weather statement, Jul 19, 1:49 PM EDT, 2 hours 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
149 PM EDT SAT JUL 19 2008

NYZ034-035-VTZ009-018-191845-
EASTERN ADDISON-WESTERN ADDISON-EASTERN ESSEX-WESTERN ESSEX-
INCLUDING...MIDDLEBURY
149 PM EDT SAT JUL 19 2008

AT 146 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM OVER UNDERWOOD IN CENTRAL ESSEX COUNTY NEW
YORK...MOVING EAST AT 25 MPH.

THE THUNDERSTORM WILL BE NEAR MORIAH...MINEVILLE BY 200 PM...NEAR D A
R STATE PARK...CROWN POINT BY 210 PM...NEAR CROWN POINT CENTER BY 220
PM...NEAR BRIDPORT BY 230 PM...NEAR CORNWALL...5 MILES SOUTH OF
WEYBRIDGE BY 240 PM...NEAR MIDDLEBURY AND EAST MIDDLEBURY BY 250 PM.

SMALL HAIL AND WIND GUSTS UP TO 45 MPH MAY ACCOMPANY THE
THUNDERSTORMS.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM EDT.

IF THREATENING WEATHER APPROACHES...SEEK SHELTER INDOORS AND STAY
AWAY FROM WINDOWS.

BANACOS
Local storm report, Jul 19, 2:29 PM EDT, 1 hour 30 minutes before
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Local storm report, Jul 19, 3:05 PM EDT, 54 minutes before
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Local storm report, Jul 19, 3:10 PM EDT, 49 minutes before
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Local storm report, Jul 19, 3:21 PM EDT, 38 minutes before
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Local storm report, Jul 19, 3:49 PM EDT, 10 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 8:21 PM EDTSevere Thunderstorm WarningBTVChittenden, Franklin, Grand Isle, Lamoille54 min
Jul 18, 11:59 PM EDTAreal Flood AdvisoryBTVCaledonia, Franklin, Lamoille, Orleans6 hr
Jul 19, 2:17 PM EDTSevere Thunderstorm WarningBTVAddison42 min
Jul 19, 2:21 PM EDTSevere Thunderstorm WarningBTVRutland, Windsor54 min
Jul 19, 2:44 PM EDTSevere Thunderstorm WarningBTVOrange, Windsor61 min
Jul 19, 3:09 PM EDTSevere Thunderstorm WarningBTVRutland, Windsor66 min
Jul 19, 3:22 PM EDTAreal Flood AdvisoryBTVAddison, Orange117 min
Jul 19, 12:28 AM EDTAreal Flood AdvisoryBTVClinton, Franklin3 hr

Nearby

Severe Thunderstorm Warnings in Vermont, 2008Every severe thunderstorm warning in 2008

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.