Hail, Addison
- When
- June 15, 12:30 PM EST
- Where
- Addison County, 2.42 mi SE of Vergennes
- Measured
- 0.75 in hail
- Reported by
- Trained Spotter
- Coordinates
- 44.150, -73.210
Penny size hail reported just southeast of Vergennes.
Flooding and Hail in Vermont, June 15, 2009
On June 15th, slow moving thunderstorms developed in the early afternoon over west central Vermont. 5 inches of rain in a few hours, which led to localized minor street flooding (ponding) in Addison county, including near Cornwall along Route 74.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $25,000
- Crop damage
- None recorded
- Events
- 4
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.
What happened
The episode as NWS BTV wrote it up.
On June 15th, slow moving thunderstorms developed in the early afternoon over west central Vermont. These storms produced upwards of 2.5 inches of rain in a few hours, which led to localized minor street flooding (ponding) in Addison county, including near Cornwall along Route 74.
In addition, some storms produced hail that ranged from pea size to penny size. Penny size hail (3/4 inch in diameter) was reported in two locations near Vergennes (Addison county).
What forecasters said that day
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 Jun 15, 10:13 AM EST, 2 hours 17 minutes earlier.
Area forecast discussion, Jun 15, 10:13 AM EST, 2 hours 17 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BURLINGTON VT 1113 AM EDT MON JUN 15 2009 .SYNOPSIS... AN UPPER AIR DISTURBANCE WILL MOVE ACROSS THE NORTH COUNTRY TODAY...BRINGING SHOWERS AND THUNDERSTORMS TO THE REGION. SOME STORMS COULD PRODUCE SMALL HAIL AND LOCALLY HEAVY RAINFALL. A RIDGE OF HIGH PRESSURE WILL BUILD INTO THE REGION TUESDAY AND WEDNESDAY. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... AS OF 1105 AM EDT MONDAY...UPDATED PRODUCTS SENT OUT WITH A FEW MINOR FIRST PERIOD ADJUSTMENTS...MAINLY JUST TO KEEP FCST CURRENT. MAIN THREAT FOR THIS PM CONTINUES TO BE THE POSSIBILITY OF LOCALLY HEAVY RAINFALL. STRONG SHRTWV WILL PASS JUST SOUTH OF FA THIS PM/EVENING. WE WILL BE UNDER UPPER LOW THIS PM WITH VERY LIGHT WINDS FROM SFC ALL THE THRU 400 MB. STLT PICS AND SFC OBS INDICATE A LOT OF BREAKS IN THE CLOUD COVER OVER CHMPLN VLY AND PORTIONS OF THE ADRNDKS...WITH EXTENSIVE CLOUD COVER ELSEWHERE. RADAR SHOWING A LARGE AREA OF SHOWERS OVER ST LWR VLY...BUT ACTIVITY MORE SCATTERED IN NATURE ACRS THE REST OF THE FA. A FEW LIGHTNING STRIKES DETECTED IN CELLS OVER ADRNDKS AND IN RUTLAND CTY VT...EXPECT ACTIVITY TO INCR THIS AFTERNOON AS ATMOS DESTABLIZES A BIT MORE...ESPECIALLY IN THE AREAS CURRENTLY SEEING SOME SUNSHINE. VERY WEAK WIND FIELD WILL MEAN VERY SLOW MOVEMENT OF ANY SHOWERS AND STORMS. PWS NOT ALL THAT HIGH...GENERALLY AROUND AN INCH...BUT THE NEARLY STATIONARY NATURE OF MANY OF THE CELLS WILL ALLOW FOR LOCALIZED RAINFALL AMOUNTS GREATER THAN 2 INCHES IN ANY CONVECTIVE ACTIVITY. FLOOD THREAT FOR SMALL RIVERS AND STREAMS WILL NEED TO BE MONITORED THIS PM. MARITIME INFLUECNE OVER ERN VT...BELIEVE THE THREAT OF THUNDER TO BE LESS EAST OF THE GREENS THAN ACRS THE REST OF THE AREA. WITH COOL POOL ALOFT...THERE IS ALSO THE THREAT FOR SOME SMALL HAIL. && .SHORT TERM /6 PM THIS EVENING THROUGH WEDNESDAY/... AS OF 448 AM EDT MONDAY...THERE IS A CHANCE FOR SOME RAIN SHOWERS EARLY THIS EVENING...THEN EXPECTING AREAS OF FOG TO DEVELOP AFTER MIDNIGHT TONIGHT...AS LIGHT WINDS...CLEARING SKIES AND MOISTURE FROM TODAYS EXPECTED RAINFALL WILL LEAD TO FOG FORMATION...ESPECIALLY IN THE SHELTERED VALLEYS OF VERMONT AND NORTHERN NEW YORK. ON TUESDAY...SOME INSTABILITY IS POSSIBLE OVER THE ADIRONDACKS AND GREEN MOUNTAINS TUESDAY AFTERNOON AS A WEAK SHORTWAVE MOVES INTO THE REGION IN THE NORTHWEST FLOW ALOFT. HAVE GONE WITH SLIGHT CHANCE POPS FOR SHOWERS AND THUNDERSTORMS TUESDAY AFTERNOON ACROSS THE ADIRONDACKS AND GREEN MOUNTAINS...BUT MOST OF THE REGION WILL REMAIN DRY ON TUESDAY. A RIDGE OF HIGH PRESSURE AT THE SURFACE AND ALOFT WILL MOVE INTO THE REGION TUESDAY NIGHT AND WEDNESDAY WITH FAIR AND DRY WEATHER EXPECTED. && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... AS OF 430 AM EDT MONDAY...FOLLOWED GRIDDED MOS PRETTY CLOSELY FOR THIS EXTENDED UPDATE. SURFACE HIGH PRESSURE WILL SLIDE OFF THE COAST OF NEW ENGLAND WEDNESDAY NIGHT. AND UPPER LEVEL RIDGE BUILDS AND PUSHES INTO EASTERN CONUS. WEDNESDAY NIGHT WAS THE ONLY PERIOD OF THE EXTENDED THAT WAS ABLE TO RULE OUT PRECIP FOR NOW. BY THURSDAY AND THURSDAY NIGHT A VORT WAVE CROSSES THE FORECAST AREA SO HAVE MENTIONED CHANCE FOR RAIN SHOWERS. THEN ON FRIDAY LOW PRESSURE TAKES SHAPE OVER GREAT LAKES REGION...AND BEGINS TO TRACK EAST. WILL PROBABLY HAVE SOME WARM AIR ADVECTION SHOWERS OUT AHEAD OF THIS SYSTEM ON SATURDAY...THEN MORE WIDESPREAD PRECIP SATURDAY NIGHT AND SUNDAY WITH COLD FROPA. THIS LOW WILL GET A BIT CAUGHT UP JUST NORTH OF THE GREAT LAKES SO COULD NOT RULE OUT A SHOWER THROUGH THE END OF THE EXTENDED FORECAST. MAX TEMPS WILL BE MAINLY IN THE LOWER 70S THROUGH THE EXTENDED AND MIN TEMPS IN THE UPPER 40S TO LOWER 50S. && .AVIATION /15Z MONDAY THROUGH FRIDAY/... THROUGH 12Z TUESDAY...FOG THAT FORMED OVERNIGHT IS LIFTING AND CEILINGS AND VISBYS WILL CONTINUE TO IMPROVE. VFR SCT THROUGH MORNING...THEN SCT -TSRA TO REDEVELOP FROM ABOUT MIDDAY ONWARD. EXPECT STORMS TO BE MORE NUMEROUS THAN YESTERDAY...AND WILL BE SLOW MOVERS. CONTINUED FCST TREND OF PREVAILING VFR CIGS/VIS...AND USED VCSH CB TO INDICATE STORMS MAY BE NEARBY. BRIEF MVFR/IFR CONDS CERTAINLY POSSIBLE AT ANY TERMINAL AFFECTED BY HEAVIER PCPN CORES AFTER 16-17Z. TSRA SHOULD SUBSIDE AFTER LOSS OF DAYTIME HEATING...SOMETIME AFTER 00Z. THEN WILL HAVE LIGHT WINDS AGAIN OVERNIGHT...WITH POSSIBLE FOG FORMATION AGAIN TOMORROW NIGHT. 12Z TUESDAY THROUGH FRIDAY... TUESDAY THROUGH THURSDAY MORNING...VFR UNDER HIGH PRESSURE. SOME IFR IN EARLY MORNING FOG POSSIBLE AT KMPV/KSLK TUESDAY AM. THURSDAY AFTERNOON AND FRIDAY...MAINLY VFR WITH AREAS MVFR CIGS/VIS RAIN SHOWERS. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...NONE. NY...NONE. && SYNOPSIS...WGH NEAR TERM...RJS SHORT TERM...WGH LONG TERM...NEILES AVIATION...NEILES
Hazardous weather outlook, Jun 15, 3:00 AM EST, 9 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BURLINGTON VT 400 AM EDT MON JUN 15 2009 NYZ026>031-034-035-087-VTZ001>012-016>019-160800- 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- 400 AM EDT MON JUN 15 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN NEW YORK...CENTRAL VERMONT...NORTHEAST VERMONT...NORTHWEST VERMONT AND SOUTHERN VERMONT. .DAY ONE...TODAY AND TONIGHT. SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS VERMONT AND NORTHERN NEW YORK TODAY AS A COLD POOL OF AIR ALOFT AND AN UPPER AIR DISTURBANCE MOVES INTO THE REGION. THERE IS THE POTENTIAL FOR SOME SMALL HAIL IN ANY THUNDERSTORMS THAT DEVELOP TODAY. THE WIND FLOW ALOFT IS LIGHT...AND ANY THUNDERSTORMS THAT DEVELOP WILL BE SLOW MOVING. THESE SLOW MOVING STORMS HAVE THE POTENTIAL TO PRODUCE LOCALLY HEAVY RAINFALL. THERE WILL BE A CHANCE FOR SOME RAIN SHOWER ACTIVITY EARLY THIS EVENING. SOME LOCALLY DENSE FOG IS POSSIBLE AFTER MIDNIGHT TONIGHT...ESPECIALLY IN THE MORE SHELTERED VALLEYS OF VERMONT AND NORTHERN NEW YORK. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. A FAIRLY ACTIVE PATTERN THROUGH THE PERIOD. A SLIGHT CHANCE FOR SHOWERS AND THUNDERSTORMS TUESDAY AFTERNOON ACROSS THE ADIRONDACKS AND THE GREEN MOUNTAINS. THERE WILL ALSO BE ADDITIONAL CHANCES FOR SHOWERS AND THUNDERSTORMS FROM THURSDAY NIGHT THROUGH SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER...SPOTTERS ARE REQUESTED TO RELAY ANY HAIL REPORTS OR REPORTS OF LOCALLY HEAVY RAINFALL TO THE NATIONAL WEATHER SERVICE IN BURLINGTON. WGH
In the hours before
Special weather statement, Jun 15, 9:56 AM EST, 2 hours 34 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 1056 AM EDT MON JUN 15 2009 NYZ026>031-034-035-087-VTZ001>012-016>019-152000- 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- INCLUDING THE CITIES OF...MASSENA...MALONE...PLATTSBURGH... STAR LAKE...SARANAC LAKE...TUPPER LAKE...DANNEMORA... LAKE PLACID...PORT HENRY...TICONDEROGA...OGDENSBURG...POTSDAM... GOUVERNEUR...ALBURGH...SOUTH HERO...ST. ALBANS...NEWPORT... ISLAND POND...BURLINGTON...JOHNSON...STOWE...ST. JOHNSBURY... MONTPELIER...MIDDLEBURY...VERGENNES...BRADFORD...RANDOLPH... RUTLAND...SPRINGFIELD...WHITE RIVER JUNCTION...ENOSBURG FALLS... RICHFORD...UNDERHILL...BRISTOL...RIPTON...EAST WALLINGFORD... KILLINGTON 1056 AM EDT MON JUN 15 2009 ...HEAVY RAINFALL POSSIBLE ACROSS THE NORTH COUNTRY TODAY... WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL BE DEVELOPING ACROSS THE NORTH COUNTRY TODAY. VERY WEAK WINDS ALOFT COMBINED WITH ABUNDANT MOISTURE AT THE SURFACE WILL CREATE THE POTENTIAL FOR SLOW MOVING STORMS WITH THE GREATEST THREAT BEING LOCALLY HEAVY RAINFALL AND FLASH FLOODING. PEOPLE INVOLVED IN OUTDOOR ACTIVITIES TODAY SHOULD BE PREPARED FOR OCCASIONAL HEAVY DOWNPOURS WHICH MAY REDUCE VISIBILITY...AS WELL AS CAUSE PONDING ON AREA ROADWAYS. OCCASIONAL CLOUD TO GROUND LIGHTNING AND SMALL HAIL ARE ALSO POSSIBLE WITHIN ANY STORMS TODAY.
Special weather statement, Jun 15, 11:32 AM EST, 58 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
1232 PM EDT MON JUN 15 2009
NYZ034-035-VTZ009-151700-
EASTERN ESSEX NY-WESTERN ADDISON VT-WESTERN ESSEX NY-
1232 PM EDT MON JUN 15 2009
...A STRONG THUNDERSTORM WILL AFFECT ADDISON AND ESSEX COUNTIES...
AT 1229 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 10 MILES
NORTHWEST OF IRONVILLE VERMONT. THIS STORM IS NEARLY STATIONARY.
THIS STORM IS CAPABLE OF PRODUCING HAIL UP TO DIME SIZE...FREQUENT
LIGHTNING...AS WELL AS VERY HEAVY RAINFALL WHICH MAY CAUSE PONDING
OF WATER ON ROADS AND SMALL STREAMS TO RISE. DO NOT STAY IN THE OPEN
NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS
WHEN A THUNDERSTORM APPROACHES.
THIS STORM WILL BE NEAR PARADOX AROUND 100 PM.
LAT...LON 4398 7377 4408 7356 4387 7330 4379 7348
4377 7364
LAHIFFSpecial weather statement, Jun 15, 12:02 PM EST, 28 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 102 PM EDT MON JUN 15 2009 NYZ035-VTZ005-009-017-018-151730- EASTERN ADDISON VT-EASTERN CHITTENDEN VT-EASTERN ESSEX NY- WESTERN ADDISON VT-WESTERN CHITTENDEN VT- 102 PM EDT MON JUN 15 2009 ...A STRONG THUNDERSTORM IN NORTHERN ADDISON COUNTY... AT 101 PM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR VERGENNES. THIS STORM IS NEARLY STATIONARY. THIS STORM WILL PRODUCE HAIL UP TO DIME SIZE. VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. THIS STORM WILL BE NEAR MONKTON AROUND 115 PM AND NORTH FERRISBURGH AROUND 130 PM. LAT...LON 4433 7340 4442 7304 4416 7298 4410 7322 LAHIFF
The radar
The Burlington radar (KCXX), 40 km away, was scanning. The volume nearest the first event began at 17:28 UTC.
Event by event
2 hail, 2 flood. Local standard time, as filed.
Hail, Addison
- When
- June 15, 12:50 PM EST
- Where
- Addison County, 1.21 mi SW of Vergennes
- Measured
- 0.75 in hail
- Reported by
- Amateur Radio
- Coordinates
- 44.160, -73.270
Penny size hail reported just over a mile south-southwest of Vergennes along Panton Road.
Flood, Addison
- When
- June 15, 2:15 PM EST to 5:00 PM EST
- Where
- Addison County, 2.17 mi W of West Cornwall to 0.93 mi WSW of West Cornwall
- Cause
- Heavy Rain
- Property damage
- $25,000
- Reported by
- Law Enforcement
- Coordinates
- 43.945, -73.273
Vermont State Police reported that State Route 74 was closed due to flood waters that exasperated a previously partially eroded road, thus making the road impassable.
Flood, Addison
- When
- June 15, 5:44 PM EST to 7:00 PM EST
- Where
- Addison County, 2.43 mi NW of Cornwall to 2.17 mi NW of Cornwall
- Cause
- Heavy Rain
- Reported by
- Law Enforcement
- Coordinates
- 43.993, -73.257
Vermont State Police reported State Route 125 was temporarily closed due to high water, but no damage.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Hail in Kansas, June 15, 2009
- Tornadoes and Flash Flooding in Kansas, June 15 to 16, 2009
- Tornadoes and Hail in Colorado, June 15, 2009
- Tornado and Flash Flooding in Missouri, June 15 to 16, 2009
- Tornadoes and Hail in Nebraska, June 15, 2009
- Flash Flooding and Hail in Alabama, June 15 to 16, 2009
- Flash Flooding and Hail in North Dakota, June 15 to 16, 2009
- Flash Flood and Hail in Kentucky, June 15 to 16, 2009
- Tornado and Flash Flood in Nebraska, June 15, 2009
- Flash Flood and Flooding in Kansas, June 15 to 16, 2009
- Flash Flood and Hail in Tennessee, June 15, 2009
- Hail in South Dakota, June 15, 2009
More
Every storm in Vermont in 2009Every state in 2009This day in weather historyWarnings in Vermont, June 2009
Sources
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: 165328, 165329, 164845, 164841.