An area of low pressure interacted with a very moist air mass across Vermont during the afternoon and evening of July 29th. Numerous showers and a few thunderstorms with very heavy rainfall fell across southern Vermont, especially in northwest Rutland county.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS BTV wrote it up.
An area of low pressure interacted with a very moist air mass across Vermont during the afternoon and evening of July 29th. Numerous showers and a few thunderstorms with very heavy rainfall fell across southern Vermont, especially in northwest Rutland county.
Numerous roads and culverts were washed out by flash flooding in the towns of Fair Haven, Hydeville, Hubbardton, Castleton, and Benson.
The local office's own words before the first event, 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 the first event at Jul 29, 1:27 PM EST, 4 hours 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BURLINGTON VT 227 PM EDT WED JUL 29 2009 .SYNOPSIS... WIDESPREAD SHOWERS AND THUNDERSTORMS ALONG WITH POTENTIAL FOR HEAVY RAIN...GUSTY WINDS AND HAIL ARE POSSIBLE THIS EVENING BEFORE ENDING LATER TONIGHT. EXPECT A DECENT DAY ON THURSDAY AS WEAK HIGH PRESSURE BRINGS PARTLY SUNNY SKIES AND DRIER WEATHER TO THE REGION. BY FRIDAY...LOW PRESSURE WILL APPROACH AND CROSS THE REGION WITH A RENEWED THREAT OF RAINFALL ALONG WITH HUMID CONDITIONS. && .NEAR TERM /THROUGH TONIGHT/... AS OF 226 PM EDT WEDNESDAY...ACTIVE WEATHER IN STORE FOR THE REGION THIS EVENING INTO THE OVERNIGHT HOURS AS SHORTWAVE FEATURE RIDES NORTHEASTWARD FROM THE MID ATLANTIC STATES. THIS WILL ALLOW WIDESPREAD DEEP CONVECTIION ALONG WITH THE THREAT OF HEAVY RAINFALL TO AFFECT THE AREA DURING THE PERIOD. ADDITIONALLY...THE THREAT FOR A FEW STRONG TO LOCALLY SEVERE STORMS ARE ALSO POSSIBLE THIS EVENING...ESPECIALLY ACROSS CENTRAL/SRN VT. FOR THE PARTICULARS...MANY THINGS COMING TOGETHER FOR A MODERATE TO HEAVY RAINFALL EVENT ACROSS PORTIONS OF THE AREA TONIGHT. WEAK SURFACE FRONT SAGGING SLOWLY SOUTHWARD FROM THE SLV WILL INTERACT W/AFOREMENTIONED SHORTWAVE AND CONVERGE W/DEEP SUBTROPICAL MOISTURE RIDING NORTHWARD (PWATS GREATER THAN 2) ACROSS OUR AREA DURING THE PERIOD. DEEP WARM COALESCENCE DEPTHS GREATER THAN 3 KM AND NEAR SATURATED TROPOSPHERIC COLUMN ALL POINT TO VERY EFFICIENT HYDROMETEOR PRODUCTION THIS EVENING...WITH RAFL RATES APPROACHING 2 TO 3 INCHES PER HOUR IN HEAVIEST CORES. WHILE ANTECEDENT PCPN HASNT BEEN ALL THAT GREAT OVER THE PAST WEEK OR SO...THESE RATES COULD CERTAINLY LEAD TO RUNOFF CONCERNS FROM THE ERN PORTIONS OF THE DACKS EASTWARD...ESP GIVEN SUCH LOW MBE VELOCITIES/CELL MOTION. THUS WILL OPT TO ISSUE FLASH FLOOD WATCH FOR THIS EVENING THROUGH 5 AM THURSDAY FOR THESE AREAS ACCORDINGLY (SEE HYDRO DISC BELOW). ADDITIONALLY...CERTAINLY CANNOT RULE OUT LOCALLY STRONG TO SVR CONVECTION THROUGH THE MID EVENING HOURS...ESP ACROSS THE SLV...AND ACROSS OUR CENTRAL/SRN VT ZONES...ESP ACROSS RUTLAND AND WINDSOR COUNTIES. VGP PROFILES QUITE STRONG ACROSS THE SLV ALONG SFC FRONT...WHILE BACKED LL FLOW AND AMPLE INSTABILITY EXISTS ACROSS SRN VT. THUS WET MICROBURST POTENTIAL AND POSSIBLE LOW TOPPED SUPERCELLS/HAIL NOT OUT OF THE QUESTION IN THESE AREAS THIS EVENING. && .SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/... AS OF 226 PM EDT WEDNESDAY...PRIMARY SHORTWAVE THEN EXITS EAST BY THURSDAY MORNING SETTING THE STAGE FOR WEAK HIGH PRESSURE TO BUILD INTO THE REGION. THUS AFTER A FEW MORNING SHOWERS/CLOUDS LOOKING AT IMPROVING CONDS BY THE AFTERNOON. DID OPT TO LOWER MAX TEMPS JUST A TAD FROM GUIDANCE DUE TO EVAPOTRANSPIRATIONAL EFFECTS FROM TONIGHTS RAFL KEEPING A LID ON FULL PBL MIXING/HEATING. NONETHELESS STILL A NICE SUMMER DAYS WITH HIGHS IN THE U70S TO L80S AREA WIDE UNDER INCREASING SUN. BY THURSDAY NIGHT CLR/PTLY CLOUDY SKIES IN THE EVENING TO SLOWLY GIVE WAYS TO MORE CLOUDS OVERNIGHT AS ADDL SHORTWAVE ENERGY TAKES AIM ON THE NORTHEAST. THUS WILL OPT TO INCREASE POPS FOR SHOWERS AND A FEW STORMS ACROSS THE WESTERN HALF OF THE AREA LATER AT NIGHT...THOUGH KEEP ERN ZONES RELATIVELY DRY UNTIL DAYBREAK ON FRIDAY. SYSTEM THEN MOVES NORTHEASTWARD ACROSS THE AREA DURING FRIDAY ALONG W/WIDESPREAD SHOWERS/STORMS. MORE IN THE WAY OF CLOUD COVER WILL LIKELY TEMPER HIGH TEMPS AND BNDRY LYR INSTABILITY SOMEWHAT...SO THREAT OF WIDESPREAD STORMS NOT AS GREAT. NONETHELESS WITH PWATS APPROACHING 2 INCHES ONCE AGAIN...POTL FOR HEAVY RAINFALL AGAIN A CONCERN AND HYDRO CONDS WILL NEED TO BE MONITORED CLOSELY. RAFL THREAT THEN EXITS EAST BY FRIDAY NIGHT AS PRIMARY FORCING PUSHES EAST OF THE AREA. && .LONG TERM /SATURDAY THROUGH TUESDAY/... AS OF 226 PM EDT WEDNESDAY...HIGH PRESSURE BUILDS OVER THE NORTH COUNTRY ON SATURDAY...SLIDING OFF THE COAST TOWARDS THE EVENING HRS. SOME RESIDUAL CLDS POSSIBLE FROM EXITING SYSTEM OVER NE VT...BUT OVERALL NICE DAY ON TAP FOR SATURDAY. WAA ON THE INCR FOR SUNDAY AS SSW FLOW INCR WITH SFC HIGH OFF THE COAST. CLDS ON THE INCR FROM THE S AND W OVER THE AREA DURING THE AFTNOON HRS SUNDAY. UPPER TROUGH SWINGIGN OUT OF THE CENTRAL U.S. WILL BRING SFC LOW ACROSS SE CANADA...AND LIFT ANOTHER LOW OUT OF THE SE TOWARDS THE REGION. THESE WILL BOTH PHASE OVERNGT INTO MONDAY MORNING FOR RW...AND EVEN TRW EARLY ON THRU MIDNGT MON. LINGERING -RW ON BACKSIDE OF BOUNDARY INTO AFTNOON HRS MONDAY. WILL TAPER OFF FROM WEST TO EAST AS SFC RIDGE BUILDS N AND E FROM GREAT LKS REGION. COOLER AIRMASS FILTER OVER MUCH OF CWA MON NGT INTO TUESDAY MORNING. HAVE UNDERCUT OVERNGT MDL LOW BY A BIT...BUT QUICK REBOUND DURING THE DAY TUESDAY AS RIDGE SLIDES EAST...ALLOWING WAA ON SSW FLOW AGAIN FOR WARMUP TO NEAR NORMAL TEMPS. LATE TUESDAY...BOUNDARY WORKING SE FROM ONTARIO WILL COME CLOSE TO SKIRTING NORTHERN BORDER ZONES. RIDGE IN PLACE WILL LIMIT PUSH S INTO AREA BUT N NY MAY SEE INCR AND SL CHANCE FOR -RW LATE IN DAY. && .AVIATION /18Z WEDNESDAY THROUGH MONDAY/... THROUGH 18Z THURSDAY...COND THRU 00Z THURS WILL RANGE FROM VFR DOWN TO MVFR AT TIMES DUE TO LWRING CEILINGS FROM RW/TRW. VSBY MAY DROP TO 3-5SM AT TIMES IN SHOWER ACTIVITY AND CEILINGS RANGING FROM BKN025-BKN040. SOME MVFR -RW FROM 00Z-04Z...WITH FG AFTWARDS WHICH WILL BRING VSBY DOWN TO MAINLY 3-5SM THRU 12Z THURS...ALTHOUGH MPV/SLK WILL DROP TO 1SM OR LESS AT TIMES W/ LGT/VAR WINDS. AFT 12Z THURS EXPECTING MAINLY VFR COND W/ SCT030-050...BUT HZ WILL DEVELOP BRINGING VSBY DOWN TO 4-6SM AT TIMES. WINDS SSW 10-20KTS BECM LGT/VAR BY 00Z-02Z...THEN MAINLY WESTERLY 5-10KTS FROM 12Z ONWARD. 18Z THURSDAY THROUGH SUNDAY... WEDNESDAY NIGHT...MVFR WITH ISOLATED IFR POSSIBLE IN RAIN SHOWERS AND AREAS FOG...ESPECIALLY AFT 06Z AT SLK/MPV. THURSDAY THROUGH THURSDAY NIGHT...VFR. SOME MVFR POSSIBLE IN SCATTERED SHOWERS AND THUNDERSTORMS...MAINLY IN EASTERN VERMONT WITH PATCHY FOG IN THE MRNG AT SLK/MPV. FRIDAY AND FRIDAY NIGHT...MVFR WITH SCATTERED IFR POSSIBLE IN SHOWERS AND AFTERNOON THUNDERSTORMS. SATURDAY THROUGH SUNDAY...CONDITIONS IMPROVING TO VFR UNDER HIGH PRESSURE. && .HYDROLOGY... WIDESPREAD CONVECTIVE RAINFALL WILL AFFECT THE REGION TONIGHT...MAINLY FROM 5 PM THROUGH 2 AM OR SO. DEEP AND SATURATED TROPOSPHERIC COLUMN ALONG WITH RELATIVELY SLOW CELL MOTIONS WILL ALLOW POTL FOR EXCESSIVE RAINFALL RATES/TOTALS THIS EVENING FROM THE ERN DACKS INTO VT. AT THIS POINT...LOOKING AT A GENERAL 1-2 INCH EVENT...WITH SCATTERED TOTALS NEARING 3 INCHES (OR PERHAPS A TAD MORE) IN A FEW SPOTS. WHILE ANTECEDENT PCPN HAS BEEN RELATIVELY LIGHT OVER THE PAST 5 DAYS...1/3/6 HR HEADWATER FFG REMAINS BELOW NORMAL AND THESE AMOUNTS COULD CERTAINLY GIVE RISE TO CONCERNS...ESP IN STEEPER TERRAIN WHERE RUNOFF WILL BE MORE RAPID. THEREFORE HAVE ISSUED A FLASH FLOOD WATCH TIL 5 AM THURSDAY ACCORDINGLY. ADDITIONAL WIDESPREAD RAINFALL IS POSSIBLE ON FRIDAY. WHILE IT IS A TAD TOO SOON TO PREDICT THE AXIS OF HEAVIER RAFL WITH THIS SECOND SYSTEM...THIS EVENINGS RAINFALL WILL CERTAINLY BE A FACTOR IN ANY IMPACTS ON FRIDAY. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR VTZ001>012-016>019. NY...FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR NYZ028-031-034-035. && SYNOPSIS...JMG NEAR TERM...JMG SHORT TERM...JMG LONG TERM...JN AVIATION...JN/TABER HYDROLOGY...JMG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BURLINGTON VT 249 PM EDT WED JUL 29 2009 NYZ028-031-034-035-VTZ001>012-016>019-301900- EASTERN CLINTON-WESTERN CLINTON-WESTERN ESSEX-EASTERN ESSEX- 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- 249 PM EDT WED JUL 29 2009 ...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT... 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. FLASH FLOOD WATCH. THERE IS ALSO THE POTENTIAL FOR STRONG AND SEVERE THUNDERSTORMS ACROSS THE AREA INTO THE EVENING HOURS. STRONG GUSTY WINDS...HAIL AND TORRENTIAL DOWNPOURS ARE POSSIBLE WITH ANY STORMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THERE IS POTENTIAL FOR ANOTHER RAIN EVENT ON FRIDAY. AREA RIVERS COULD BE ABOVE NORMAL LEVELS AFTER TONIGHT...PROVIDING ADDITIONAL CONCERNS FOR FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. NYZ026-027-029-030-087-301900- NORTHERN ST. LAWRENCE-NORTHERN FRANKLIN-SOUTHEASTERN ST. LAWRENCE- SOUTHERN FRANKLIN-SOUTHWESTERN ST. LAWRENCE- 249 PM EDT WED JUL 29 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN NEW YORK. .DAY ONE...THIS AFTERNOON AND TONIGHT. SHOWERS AND THUNDERSTORMS ARE POSSIBLE OVER THE AREA INTO THE EVENING HOURS. SOME OF THESE STORMS MAY CONTAIN GUSTY WINDS AND HEAVY DOWNPOURS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THERE IS POTENTIAL FOR ANOTHER RAIN EVENT ON FRIDAY. AREA RIVERS COULD BE ABOVE NORMAL LEVELS AFTER TONIGHT...PROVIDING ADDITIONAL CONCERNS FOR FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 353 PM EDT WED JUL 29 2009 VTZ008-010>012-018-019-292045- EASTERN ADDISON VT-EASTERN RUTLAND VT-ORANGE VT-WASHINGTON VT- WESTERN RUTLAND VT-WINDSOR VT- 353 PM EDT WED JUL 29 2009 ...STRONG THUNDERSTORMS WILL AFFECT ORANGE...RUTLAND... WASHINGTON AND WINDSOR COUNTIES... AT 349 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM KILLINGTON TO WOODSTOCK...MOVING NORTHEAST AT 35 MPH. THESE STORMS WILL BE NEAR STOCKBRIDGE AROUND 400 PM...ROCHESTER AROUND 415 PM...RANDOLPH AROUND 430 PM AND AINSWORTH STATE PARK AROUND 445 PM. TORRENTIAL DOWNPOURS AND DANGEROUS CLOUD TO GROUND LIGHTNING ARE EXPECTED WITH THESE STORMS. IN ADDITION...WIND GUSTS TO 40 MPH AND PEA-SIZED HAIL IS POSSIBLE. HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 5 AM THURSDAY. LAT...LON 4416 7270 4411 7212 4356 7252 4358 7300 PB
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 420 PM EDT WED JUL 29 2009 NYZ028-034-035-VTZ001-002-005-006-009-016>018-292115- EASTERN ADDISON VT-EASTERN CHITTENDEN VT-EASTERN CLINTON NY- EASTERN ESSEX NY-EASTERN FRANKLIN VT-GRAND ISLE VT-LAMOILLE VT- WESTERN ADDISON VT-WESTERN CHITTENDEN VT-WESTERN ESSEX NY- WESTERN FRANKLIN VT- 420 PM EDT WED JUL 29 2009 ...STRONG THUNDERSTORMS WILL AFFECT ADDISON...CHITTENDEN...CLINTON... ESSEX...FRANKLIN...GRAND ISLE AND LAMOILLE COUNTIES... AT 415 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM ESSEX NEW YORK TO MT. PHILO STATE PARK IN VERMONT...MOVING NORTHEAST AT 30 MPH. THESE STORMS WILL BE NEAR EAST CHARLOTTE AROUND 415 PM...SHELBURNE POINT AROUND 430 PM...WILLISTON AND BURLINGTON AROUND 445 PM...CAMBRIDGE AROUND 500 PM AND JEFFERSONVILLE AROUND 515 PM. WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THESE STORMS. IN ADDITION...TORRENTIAL DOWNPOURS ARE EXPECTED WITH THESE STORMS. HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 5 AM. LAT...LON 4478 7325 4470 7272 4419 7312 4425 7354 PB
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 450 PM EDT WED JUL 29 2009 NYZ028-035-VTZ001-002-005-006-016-017-292145- EASTERN CHITTENDEN VT-EASTERN CLINTON NY-EASTERN ESSEX NY- EASTERN FRANKLIN VT-GRAND ISLE VT-LAMOILLE VT-WESTERN CHITTENDEN VT- WESTERN FRANKLIN VT- 450 PM EDT WED JUL 29 2009 ...STRONG THUNDERSTORMS WILL AFFECT CHITTENDEN...CLINTON...ESSEX... FRANKLIN...GRAND ISLE AND LAMOILLE COUNTIES... AT 446 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM KEESEVILLE TO BURLINGTON TO WEST BOLTON...MOVING NORTH AT 25 MPH. WIND GUSTS TO 50 MPH ARE POSSIBLE ACROSS THE CENTRAL AND NORTHERN CHAMPLAIN VALLEY WITH THESE STORMS THROUGH 545 PM. ALSO...HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 5 AM THURSDAY. THE LINE OF STRONG WINDS WILL BE NEAR COLCHESTER AND KEESEVILLE AROUND 450 PM...CLOVERDALE AND GEORGIA AROUND 515 PM...GRAND ISLE AROUND 530 PM...FAIRFIELD AND ST. ALBANS AROUND 545 PM. LAT...LON 4492 7341 4491 7269 4440 7284 4440 7350 BANACOS
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
523 PM EDT WED JUL 29 2009
NYZ028-VTZ001-292215-
EASTERN CLINTON NY-GRAND ISLE VT-
523 PM EDT WED JUL 29 2009
...A STRONG THUNDERSTORM WILL AFFECT FAR NORTHEASTERN CLINTON COUNTY
AND FAR NORTHERN GRAND ISLE COUNTY...
AT 521 PM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR PERRY MILLS...
MOVING NORTHEAST AT 20 MPH.
WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. ALSO...TORRENTIAL
DOWNPOURS ARE EXPECTED AND WILL PRODUCE LOCALIZED HEAVY RAINFALL AND
PONDING ON AREA ROADWAYS.
THIS STORM WILL BE NEAR ROUSES POINT AROUND 530 PM.
A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 5 AM THURSDAY.
LAT...LON 4487 7342 4497 7364 4501 7361 4501 7336
4502 7334 4502 7328
PBSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 550 PM EDT WED JUL 29 2009 VTZ003-004-292245- ESSEX VT-ORLEANS VT- 550 PM EDT WED JUL 29 2009 ...A STRONG THUNDERSTORM WILL AFFECT ESSEX AND ORLEANS COUNTIES IN NORTHEAST VERMONT... AT 548 PM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR COVENTRY... MOVING NORTHEAST AT 25 MPH. WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 5 AM THURSDAY. THIS STORM WILL BE NEAR EXIT 27 I91 AND NEWPORT AROUND 600 PM...BEEBE PLAINS AROUND 615 PM AND NORTON AROUND 630 PM. LAT...LON 4501 7178 4476 7201 4485 7238 4501 7230 PB
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 559 PM EDT WED JUL 29 2009 NYZ028-VTZ001>003-005-006-008-016-017-292300- EASTERN CHITTENDEN VT-EASTERN CLINTON NY-EASTERN FRANKLIN VT- GRAND ISLE VT-LAMOILLE VT-ORLEANS VT-WASHINGTON VT- WESTERN CHITTENDEN VT-WESTERN FRANKLIN VT- 559 PM EDT WED JUL 29 2009 ...STRONG THUNDERSTORMS WILL AFFECT THE NORTHERN CHAMPLAIN VALLEY THROUGH 7 PM... AT 555 PM EDT...STRONG THUNDERSTORMS AND ASSOCIATED WIND GUSTS UP TO 50 MPH WERE ALONG A LINE FROM SOUTH ALBURGH TO MONTGOMERY CENTER...MOVING NORTHEAST AT 20 MPH. WIND GUSTS TO 50 MPH ARE POSSIBLE ACROSS THE NORTHERN PORTION OF LAKE CHAMPLAIN...THE CHAMPLAIN ISLANDS...AND ADJACENT PORTIONS OF CLINTON COUNTY NEW YORK AND FRANKLIN COUNTY IN VERMONT. WIDESPREAD THUNDERSTORMS ARE EXPECTED ACROSS THE NORTHERN CHAMPLAIN VALLEY THROUGH 7 PM. TORRENTIAL DOWNPOURS AND DANGEROUS CLOUD TO GROUND LIGHTNING CAN ALSO BE EXPECTED. A FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 5 AM THURSDAY. LAT...LON 4501 7254 4438 7248 4434 7328 4497 7335 PB
The Burlington radar (KCXX), 100 km away, was scanning. The volume nearest the first event began at 23:24 UTC.
1 flash flood. Local standard time, as filed.
Numerous roads were washed out by flash flooding in northwest Rutland County VT. Road and culvert washouts were reported in the towns of Fair Haven, Hydeville, Hubbardton, Castleton, and Benson.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Vermont in 2009Every state in 2009This day in weather historyWarnings in Vermont, July 2009
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 188859.