Alert archive / Vermont / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 49, NWS Burlington, VT
NWS Burlington, VT issued this severe thunderstorm warning at Aug 29, 2004, 6:00 PM EDT for Chittenden County, Lamoille County, Vermont. It was in force for 45 min. 2 reports 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
- Aug 29, 2004, 6:00 PM EDT (22:00 UTC)
- Expired
- Aug 29, 2004, 6:45 PM EDT
- In force
- 45 min
- Issued by
- NWS Burlington, VT
- Area
- Counties, with a storm outline in the text
Counties Chittenden County, VT, Lamoille County, VT
The radar
The Burlington radar (KCXX), 34 km from the middle of the area, began a volume at 22:03 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 |
|---|---|---|---|
| Aug 29, 6:15 PM EDT | TSTM WND DMG | Johnson, VT | 8-10 INCH 30 FT MAPLE TREE SNAPPED HALFWAY UP AND LAYING ON POWER LINES ON COLLINS HILL ROAD. |
| Aug 29, 6:15 PM EDT | TSTM WND DMG | Johnson, VT | 8-10 INCH 30 FT MAPLE TREE SNAPPED HALFWAY UP AND LAYING ON POWER LINES ON COLLINS HILL ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 15 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 29, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Gray, ME (KGYX), launched 12:00Z, 10.0 hours before the alert went out and 211 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 949 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 226 m²/s²
- 0-3 km storm-relative helicity
- 331 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KBTV 292200
SVRBTV
VTC007-015-292245-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BURLINGTON VT
600 PM EDT SUN AUG 29 2004
THE NATIONAL WEATHER SERVICE IN BURLINGTON HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
LAMOILLE COUNTY IN NORTHWEST VERMONT
CHITTENDEN COUNTY IN NORTHWEST VERMONT
* UNTIL 645 PM EDT
* AT 550 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 2 MILES NORTH OF
WESTFORD TO 2 MILES WEST OF RICHMOND...MOVING EAST AT 35 MPH.
* SEVERE THUNDERSTORMS WILL BE...
NEAR JONESVILLE...WEST BOLTON...UNDERHILL...CAMBRIDGE AROUND 600 PM
EDT
NEAR JEFFERSONVILLE AROUND 610 PM EDT
NEAR STOWE...MORRISVILLE...JOHNSON...HYDE PARK AROUND 620 PM EDT
NEAR EDEN AROUND 630 PM EDT
WHEN SEVERE THUNDERSTORMS ARE OCCURRING...MOVE INSIDE A REINFORCED
BUILDING...AWAY FROM WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL
APPLIANCES UNTIL THE STORMS HAVE PASSED.
LAT...LON 4464 7303 4462 7293 4469 7280 4476 7276
4476 7253 4472 7243 4463 7249 4458 7238
4443 7249 4447 7259 4440 7267 4446 7280
4431 7290 4431 7305 4431 7305
$$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 Aug 29, 4:40 PM EDT, 1 hour 20 minutes earlier.
Area forecast discussion, Aug 29, 4:40 PM EDT, 1 hour 20 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BURLINGTON VT 440 PM EDT SUN AUG 29 2004 .SHORT TERM (TONIGHT THRU WEDNESDAY)... UNSETTLED CONDITIONS CONTINUE INTO MONDAY NIGHT AS WARM AND VERY MOIST AIRMASS REMAINS IN PLACE ACRS FA (PWS CLOSE TO 2 INCHES THRU MONDAY). NUMEROUS SHWRS/THNDSTRMS ACRS FA THIS PM...WITH ACTIVITY MOST CONCENTRATED ACRS NRN NYS. WITH ALL AREAS EXPERIENCING SOME SUNSHINE TODAY...TEMPS WARMED MORE THAN EXPECTED...WITH MANY AREAS WELL INTO 80S. THIS HAS AIDED IN DESTABILIZATION OF ATMOS...AND THIS COMBINED WITH A FRONTAL BOUNDARY DRAPED ACRS NRN PTN FA HAS RESULTED IN THE DVLPMNT OF CONVECTION THIS PM. SEVERE THUNDERSTORM WATCH RMNS IN EFFECT TILL 7 PM. MAIN THREAT WILL BE DAMAGING WNDS WITH WET MICROBURSTS. WITH HIGH PWS...THREAT OF FLASH FLOODING WILL CONTINUE. THIS THREAT GREATEST OVER NRN NYS INTO NW VT ATTM WHERE STORMS CONTINUE TO TRACK NORTHEAST THRU ADRNDKS. AS INSTABILITY DECREASES TONIGHT WITH LOSS OF DAYTIME HEATING...THE THREAT OF SVR WX WL DECREASE. FRONT QUASI-STATIONARY AS WEAK WAVE OF LOW PRESSURE TRACKS NORTHEAST ALG IT UP THRU ST LWR VLY. RISK OF SHWRS DECREASES OVRNIGHT ACRS SRN ZONES...BUT RMNS HIGH OVER NRN AREAS (ESP NRN NY) DUE PROXIMITY WITH FRONT. MORE SHWRS/THNDSTRMS EXPECTED MONDAY/MON NITE. FRONT RMNS IN VCNTY WHILE MID LVL SHRTWV AND ANOTHER WK SFC WAVE MOVE ACRS RGN. SOME MSTR FROM GASTON ALSO BECOMES ENTRAINED INTO SYSTEM...ENHANCING POTENTIAL FOR SOME LOCALLY HVY RAINS...ESP IN ERN NYS AND VT. DRIER AIR GRADUALLY BUILDS IN TUES AS TROF MOVES EAST OF FA. LINGERING SHWRS ERN ZONES TUES AM...THEN CLRNG TUES PM/NITE. HIGH PRESSURE THEN BRINGS SUNSHINE AND DRY CONDITIONS WED. && .LONG RANGE...(WED NITE THRU SUNDAY) TRANQUIL WX EXPECTED FOR MUCH OF THIS PERIOD. DRY CONDITIONS EXPECTED THRU SATURDAY AS HIGH PRESSURE DRIFTS EASTWARD OFFSHORE OF SOUTHERN NEW ENGLAND. BY SATURDAY RETURN FLOW ALLOWS FOR AN INCREASE IN MSTR WHICH WILL RESULT IN A CHC OF SHWRS BY SUNDAY. && AVIATION... NUMEROUS SHRAS/TSRAS THIS EVENING...ACPYD BY IFR CONDITIONS. POTENTIAL FOR SVR TSRA THRU THIS EVENING. OUTSIDE OF PCPN...EXPECT MVFR/VFR CONDITIONS THIS EVENING. WIDESPREAD SHWRS WITH EMBEDDED THUNDER OVRNGHT AND MONDAY. MVFR CONDITIONS EXPECTED...OCNLY LOWERING TO IFR. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...SEVERE THUNDERSTORM WATCH UNTIL 7 PM VTZ001-012-01>019. NY...SEVERE THUNDERSTORM WATCH UNTIL 7 PM NYZ026>031-034-035-087. && RJS/JN
Hazardous weather outlook, Aug 29, 3:28 AM EDT, 14 hours 32 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BURLINGTON VT 328 AM EDT SUN AUG 29 2004 NYZ026>031-034-035-087-VTZ001>012-016>019-300727- CALEDONIA-EASTERN ADDISON-EASTERN CHITTENDEN-EASTERN CLINTON- EASTERN ESSEX-EASTERN FRANKLIN-EASTERN RUTLAND-ESSEX-GRAND ISLE- LAMOILLE-NORTHERN FRANKLIN-NORTHERN ST. LAWRENCE-ORANGE-ORLEANS- SOUTHEASTERN ST. LAWRENCE-SOUTHERN FRANKLIN- SOUTHWESTERN ST. LAWRENCE-WASHINGTON-WESTERN ADDISON- WESTERN CHITTENDEN-WESTERN CLINTON-WESTERN ESSEX-WESTERN FRANKLIN- WESTERN RUTLAND-WINDSOR- 328 AM EDT SUN AUG 29 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHERN VERMONT AS WELL AS NORTHERN NEW YORK. .DAY ONE...TODAY: SHOWERS AND THUNDERSTORMS WILL DEVELOP ALL ACROSS THE NORTH COUNTRY BUT BE MOST PREVALENT ACROSS NORTHERN NEW YORK AND NORTH OF RUTLAND AND WINDSOR COUNTIES IN VERMONT. LOCALLY VERY HEAVY RAIN IS EXPECTED ALONG WITH THE THREAT FOR LOCALIZED FLOODING HEIGHTENED. THIS THREAT WILL CONTINUE THROUGH MONDAY...SLOWLY SHIFTING SOUTHEAST INTO ALL OF VERMONT BY MONDAY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY: AFTER THE HEAVY RAIN THREAT SLOWLY EXITS THE REGION BY MONDAY NIGHT, DRIER WEATHER SHOULD RETURN FOR THE REST OF THE WEEK. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED LATER TODAY.
In the hours before
Special weather statement, Aug 29, 2:32 PM EDT, 3 hours 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 232 PM EDT SUN AUG 29 2004 NYZ027-028-030-031-291928- EASTERN CLINTON-NORTHERN FRANKLIN-SOUTHERN FRANKLIN-WESTERN CLINTON- 232 PM EDT SUN AUG 29 2004 AN AREA OF THUNDERSTORMS OVER NORTHEAST FRANKLIN COUNTY IN NEW YORK WILL MOVE NORTHEAST INTO NORTHWEST CLINTON COUNTY THROUGH 330 PM. TORRENTIAL DOWNPOURS...GUSTY WINDS AND HAIL ARE POSSIBLE WITH THESE STORMS. SOME OF THE TOWNS AFFECTED THROUGH 330 PM ARE...CANNON CORNERS...ELLENBURG DEPOT...HARRIGAN AND CHURUBUSCO. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL TELEVISION AND RADIO... OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS AND UPDATED FORECASTS.
Local storm report, Aug 29, 4:22 PM EDT, 1 hour 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BURLINGTON VT
422 PM EDT SUN AUG 29 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0348 PM TSTM WND DMG SOUTH ALBURG 44.89N 73.28W
08/29/2004 GRAND ISLE VT AIRPLANE PILOT
TREES DOWN ACROSS ROAD BLOCKING BRIDGE TO NORTH HERO.
&&
LAHIFFSpecial weather statement, Aug 29, 4:55 PM EDT, 1 hour 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 455 PM EDT SUN AUG 29 2004 NYZ028-VTZ001-002-016-292200- GRAND ISLE-WESTERN FRANKLIN-EASTERN FRANKLIN-EASTERN CLINTON- AT 447 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS FROM HIGHGATE FALLS TO GRAND ISLE...MOVING EAST AT 35 MPH. THUNDERSTORMS WILL BE NEAR SHELDON...NORTH FAIRFAX BY 510 PM...NEAR RICHFORD...ENOSBURG FALLS BY 520 PM...NEAR MONTGOMERY...BAKERSFIELD BY 530 PM AND NEAR MONTGOMERY CENTER BY 540 PM. STRONG GUSTY WINDS AND TORRENTIAL DOWNPOURS WILL ACCOMPANY THESE THUNDERSTORMS. SEEK A SAFE INDOOR SHELTER IF THREATENING WEATHER APPROACHES. KJC
Special weather statement, Aug 29, 5:04 PM EDT, 56 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 504 PM EDT SUN AUG 29 2004 VTZ009-292200- WESTERN ADDISON- 504 PM EDT SUN AUG 29 2004 A STRONG THUNDERSTORM JUST SOUTH OF TICONDEROGA IN ESSEX COUNTY NEW YORK...WILL MOVE NORTHEAST INTO SOUTHERN AND CENTRAL PORTIONS OF ADDISON COUNTY IN VERMONT THROUGH 600 PM. STRONG GUSTY WINDS...VERY HEAVY DOWNPOURS...OCCASIONAL LIGHTNING...AND SMALL HAIL ARE POSSIBLE WITH THIS STORM. SOME TOWNS THAT WILL BE AFFECTED DURING THIS TIME ARE...ORWELL...SHOREHAM...CORNWALL...BRIDPORT AND MIDDLEBURY. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL TELEVISION AND RADIO... OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS AND UPDATED FORECASTS.
Local storm report, Aug 29, 5:50 PM EDT, 10 minutes before
PRELIMINARY LOCAL STORM REPORT ... SUMMARY
NATIONAL WEATHER SERVICE BURLINGTON VT
550 PM EDT SUN AUG 29 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0348 PM TSTM WND DMG SOUTH ALBURG 44.89N 73.28W
08/29/2004 GRAND ISLE VT AIRPLANE PILOT
TREES DOWN ACROSS ROAD BLOCKING BRIDGE TO NORTH HERO.
0520 PM TSTM WND DMG AUSABLE CHASM 44.52N 73.47W
08/29/2004 ESSEX NY PUBLIC
TREES DOWN ON ROAD
0530 PM TSTM WND DMG JAY 44.38N 73.73W
08/29/2004 ESSEX NY FIRE DEPT/RESCUE
TREES DOWN.
&&
LAHIFFThe office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 8:20 PM EDT | Flash Flood Warning | BTV | Addison | 4 hr |
| Aug 29, 3:29 PM EDT | Severe Thunderstorm Warning | BTV | Franklin, Grand Isle | 46 min |
| Aug 29, 5:19 PM EDT | Severe Thunderstorm Warning | BTV | Chittenden | 41 min |
| Aug 29, 6:29 PM EDT | Severe Thunderstorm Warning | BTV | Orleans | 46 min |
Nearby
Severe Thunderstorm Warnings in Vermont, 2004Every severe thunderstorm warning in 2004
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.