Alert archive / Vermont / Severe Thunderstorm Warnings in 2005
Severe Thunderstorm Warning 22, NWS Burlington, VT
NWS Burlington, VT issued this severe thunderstorm warning at Jun 28, 2005, 9:20 PM EDT for Grand Isle County, Vermont. 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 counties it named.
The facts
- Issued
- Jun 28, 2005, 9:20 PM EDT (01:20 UTC)
- Expired
- Jun 28, 2005, 9:59 PM EDT
- In force
- 39 min
- Issued by
- NWS Burlington, VT
- Area
- Counties, with a storm outline in the text
County Grand Isle County, VT
The radar
The Burlington radar (KCXX), 33 km from the middle of the area, began a volume at 01:20 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 00:00Z, 1.3 hours before the alert went out and 238 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
- 1353 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 976 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 63 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
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 Jun 28, 2:35 PM EDT, 6 hours 45 minutes earlier.
Area forecast discussion, Jun 28, 2:35 PM EDT, 6 hours 45 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BURLINGTON VT 235 PM EDT TUE JUN 28 2005 .SHORT TERM (TONIGHT THROUGH FRIDAY)... A FEW MORE DAYS OF THE WARM SOUPY WEATHER...THEN RELIEF BY THE END OF THE WEEK. DIURNAL THUNDERSTORMS HAVE DEVELOPED IN THE AFTERNOON HEATING OVER THE HIGHER TERRAIN...AS LAPS SURFACE BASED CAPES APPROACHING 2000 J/KG. LOW PRESSURE AREA WITH TROPICAL HISTORY ACROSS FAR SOUTHERN VT IN KALYS AREA FORECAST TO MOVE EAST INTO CENTRAL NEW ENGLAND...AND NOT HAVE AN EFFECT ON BTVS FORECAST AREA. SHOWERS/THUNDERSTORMS TO CONTINUE INTO THE EVENING...THEN DISSIPATE AS SUN SETS AND AIRMASS STABILIZES. STORMS ARE MOVING VERY SLOWLY...AND PWATS 1.25 TO 1.5 AREAS UNDER THE STORMS CAN PICK UP A QUICK 1 TO 1.5 INCHES. FOR WEDNESDAY...A WEAK COLD FRONT IS FORECAST TO MOVE INTO THE AREA IN FITS AND STARTS...ALTHOUGH IT WILL HAVE SOME SUPPORT IN A 5H TROUGH. BY 12Z...A SURFACE PRE-FRONTAL TROUGH WILL BE EAST/WEST ACROSS CENTRAL PART OF AREA...WITH FRONT TO NORTH ACROSS ST.LAWRENCE VALLEY. DURING THE DAY THE TROUGH AND FRONT WILL SAG SOUTHWARD...AND BE THE FOCUS OF CONVECTION. LEFT LIKELY POPS ALL DAY...THINKING TROUGH COULD TRIGGER PRECIP IN THE MORNING...THEN FRONT IN THE AFTERNOON. THE FRONT WILL STALL ACROSS THE REGION HOWEVER...AND PROVIDE ONLY MINIMAL RELIEF FROM WARM TEMPS AND HIGH HUMIDITY. FOR THURS...APPROACHING LOW PRESSURE FROM WEST WILL TURN WINDS SOUTHERLY...AND BRING RETURN FLOW OF WARM HUMID AIR. WERE UNDER SHORT WAVE RIDGING AT 5H WHICH COULD KEEP US CAPPED...SO WENT WITH LOWER CHC POPS FOR AFTERNOON/EVENING THUNDERSTORMS. BROKE UP TIMING IN GRIDS TO TRY TO SHOW DIURNAL NATURE OF PRECIP. WILL WORD ZONES WITH CHANCE MAINLY AFTERNOON/EVENING. && .LONG TERM (FRIDAY NIGHT THROUGH TUESDAY)... FRNT THRU MUCH OF CWA FRIDAY NGT...PUSHING EAST INTO NH BY 06Z-09Z. WILL CONTINUE MENTION RW/TRW...TAPERING FROM WEST TO EAST WITH EASTERN VT SEEING LAST OF PRECIP. SFC RIGDE BUILDING DOWN SE FROM CANADA OVER THE REGION DURING THE DAY SATURDAY...PROVIDING RELIEF FROM SUMMER TEMPS DURING WEEK. MDLS HAVE RIDGE CONTINUING TO SLIDE SE OVER THE WEEKEND...SETTING UP SOUTH OF NEW ENGLAND...FOR ANOTHER ROUND OF WARM/HUMID WX FOR BEGINNING OF WEEK. 850MB TEMPS 16-18C WORKING INTO AREA ON MONDAY...WOULD TRANSLATE INTO AT LEAST MID TO UPPER 80S AREA CWA. HPC TEMP GUIDANCE LOW SO WILL TWEAK UP A BIT. WILL ALSO ADD IN SL CHANCE FOR TRW FOR AFTERNOON/EARLY EVENING ACROSS AREA. SEEN IN PAST WEEK WITH HUMID AIRMASS OVER AREA...SO WILL CONTINUE MENTION HERE AS WELL. FRNT APPROACHES FROM WEST MON NGT INTO TUESDAY. WILL KEEP HIGH CHANCE POPS ALREADY MENTIONED FOR DAYTIME TUESDAY...BUT ADJUST POPS TO BETTER SHOW FROPA OVER CWA. ALSO ADJUST SO TEMPS A BIT LOWER FROM MONDAY/S HIGHS. && .AVIATION... SCAT TS ACROSS MUCH OF CWA THRU 00Z FOR MVFR/IFR COND...OTHERWISE VFR CONDITIONS W/ SCT MID CLD BKN HIGH CLD DECK. AREAS OF FG/HZ ALL SITES THRU 10Z-11Z...W/ VFR/MVFR COND...IFR AT TIMES AT KSLK. AFT 11Z LGT -RW INCR FROM W TO E WITH TRW MIXED IN. WINDS SLOWLY SHIFTING FROM SSW TO WNW...10KTS OR LESS. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...NONE. NY...NONE. && SHORT TERM...HANSON LONG TERM...JN AVIATION...JN
Hazardous weather outlook, Jun 28, 3:07 AM EDT, 18 hours 13 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BURLINGTON VT 307 AM EDT TUE JUN 28 2005 NYZ026>031-034-035-087-VTZ001>012-016>019-290706- CALEDONIA VT-EASTERN ADDISON VT-EASTERN CHITTENDEN VT- EASTERN CLINTON NY-EASTERN ESSEX NY-EASTERN FRANKLIN VT- EASTERN RUTLAND VT-ESSEX VT-GRAND ISLE VT-LAMOILLE VT- NORTHERN FRANKLIN NY-NORTHERN ST. LAWRENCE NY-ORANGE VT-ORLEANS VT- SOUTHEASTERN ST. LAWRENCE NY-SOUTHERN FRANKLIN NY- SOUTHWESTERN ST. LAWRENCE NY-WASHINGTON VT-WESTERN ADDISON VT- WESTERN CHITTENDEN VT-WESTERN CLINTON NY-WESTERN ESSEX NY- WESTERN FRANKLIN VT-WESTERN RUTLAND VT-WINDSOR VT- INCLUDING THE CITIES OF...BARRE...BETHEL...BRANDON...BURLINGTON... CANAAN...CANTON...DANBY...ESSEX JUNCTION...FAIR HAVEN...MALONE... MASSENA...MIDDLEBURY...MONTPELIER...MORRISVILLE...NEWCOMB... NEWPORT...OGDENSBURG...PLATTSBURGH...POTSDAM...RANDOLPH...RUTLAND... SARANAC LAKE...SOUTH BURLINGTON...SPRINGFIELD...ST. ALBANS... ST. JOHNSBURY...SWANTON...VERGENNES...WHITE RIVER JUNCTION... WILLSBORO AND WINOOSKI 307 AM EDT TUE JUN 28 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHERN VERMONT AS WELL AS NORTHERN NEW YORK. .DAY ONE...TODAY... VERY WARM AND HUMID CONDITIONS WITH TEMPERATURES IN THE UPPER 80S TO AROUND 90. THE ELDERLY AND VERY YOUNG ARE MOST SUSCEPTIBLE TO THE DANGERS OF EXCESSIVE HEAT. DO NOT OVER EXERT YOURSELF...DRINK PLENTY OF WATER, FIND SHADE OR AN AIR CONDITIONED BUILDING AS MUCH AS POSSIBLE AND NEVER LEAVE CHILDREN OR PETS AN A VEHICLE. THUNDERSTORMS WILL BECOME MORE NUMEROUS TODAY BUT STILL BE SCATTERED IN NATURE. ANY THUNDERSTORMS WILL BE VERY SLOW MOVING AND CONTAIN VERY HEAVY RAIN, THUS THE POTENTIAL DOES EXIST FOR LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY... SHOWERS AND THUNDERSTORMS BECOMING MORE NUMEROUS WEDNESDAY THROUGH FRIDAY THEN DRY COMFORTABLE WEATHER RETURNS. .SPOTTER CALL TO ACTION STATEMENT... SKYWARN SPOTTER ACTIVATION NOT EXPECTED AT THE MOMENT.
In the hours before
Local storm report, Jun 28, 6:48 PM EDT, 2 hours 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BURLINGTON VT
648 PM EDT TUE JUN 28 2005
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0642 PM HAIL OSWEGATCHIE 44.18N 75.07W
06/28/2005 0.88 INCH ST. LAWRENCE NY TRAINED SPOTTER
&&
PSLocal storm report, Jun 28, 8:09 PM EDT, 1 hour 11 minutes before
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</html>The office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 2:20 PM EDT | Flash Flood Warning | BTV | Chittenden | 85 min |
| Jun 29, 2:50 PM EDT | Severe Thunderstorm Warning | BTV | Chittenden | 27 min |
| Jun 29, 5:13 PM EDT | Flash Flood Warning | BTV | Lamoille | 2 hr |
| Jun 29, 3:16 PM EDT | Flash Flood Warning | BTV | Essex | 89 min |
| Jun 29, 3:34 PM EDT | Severe Thunderstorm Warning | BTV | Clinton | 41 min |
Nearby
Severe Thunderstorm Warnings in Vermont, 2005Every severe thunderstorm warning in 2005
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.