A surface cold front and very strong mid-level disturbance moved across a highly unstable air mass across all of New York during the late afternoon and evening of July 8th. The low level jet stream was unusually strong and got entrained into the thunderstorms, thus producing scattered to widespread wind damage across Northern New York, especially St.
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.
A surface cold front and very strong mid-level disturbance moved across a highly unstable air mass across all of New York during the late afternoon and evening of July 8th. The low level jet stream was unusually strong and got entrained into the thunderstorms, thus producing scattered to widespread wind damage across Northern New York, especially St. Lawrence county. Much of the wind damage was tree and utility line damage but also some structural damage due to fallen trees. Some wind damage was estimated at 70 mph or greater.
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 8, 3:14 PM EST, 1 hour 22 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BURLINGTON VT 414 PM EDT TUE JUL 8 2014 .SYNOPSIS... SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO IMPACT THE REGION THROUGH MIDNIGHT TONIGHT...BEFORE DISSIPATING. THE THREAT FOR LOCALIZED DAMAGING WINDS AND HEAVY DOWN POURS WILL BE POSSIBLE WITH THE STRONGER STORMS...ESPECIALLY ACROSS NORTHERN NEW YORK. A TROUGH OF LOW PRESSURE WILL DEVELOP ACROSS THE NORTH COUNTRY THROUGH FRIDAY. THIS WILL RESULT IN COOLER AND DRIER ACROSS OUR REGION...WITH NEAR NORMAL TEMPERATURES ANTICIPATED. AN ISOLATED SHOWERS WILL BE POSSIBLE ON WEDNESDAY...BEFORE SURFACE HIGH PRESSURE BUILDS DIRECTLY OVERHEAD BY THURSDAY AND CONTINUES INTO THE WEEKEND. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/... AS OF 415 PM EDT TUESDAY...AN ACTIVE LATE AFTN AND EVENING EXPECTED ACROSS THE NORTH COUNTRY WITH STRONG TO SEVERE STORMS LIKELY. DAMAGING WINDS WL BE THE PRIMARY SVR WEATHER THREAT...WHICH MAY CAUSE POWER OUTAGES AND DOWN TREES...ESPECIALLY NORTHERN NY. SYNOPTIC SCALE SHOWS DEVELOPING MID/UPPER LVL TROF ACRS THE CENTRAL GREAT LAKES WITH POTENT 5H VORT LIFTING FROM WESTERN NY INTO THE SLV BY 03Z TONIGHT. THIS ENERGY WL COMBINED WITH FAVORABLE LOW TO MID LVL WIND PROFILES TO PRODUCE SCATTERED TO NUMEROUS SHOWERS AND STORMS ACRS OUR FA FROM 21 UTC TO 06Z TONIGHT. THE LIMITING FACTOR WITH REGARDS TO HIGH END SVR WL BE AMOUNT OF INSTABILITY AND TIMING OF SYSTEM...FEEL BEST CHC FOR DAMAGING WINDS OF 60 MPH OR GREATER WL BE ACRS NORTHERN NY INTO THE CPV. THE LINE OF STORMS SHOULD WEAKEN ACRS CENTRAL/EASTERN VT AS INSTABILITY DECREASES FROM THE LOSS OF SFC HEATING. HAVE ALREADY NOTED SFC BASED CAPE PARAMETERS DECREASING AS MID LVL CLOUDS MOVE INTO OUR REGION...WITH LAPS SHOWING VALUES BTWN 1500 AND 2000 J/KG...THIS COULD LIMIT AREAL COVERAGE/INTENSITY OF STORMS ACRS OUR CWA. WL CONT TO MENTION DAMAGING WINDS IN FCST THRU 04Z TONIGHT...MAINLY FROM THE CPV AND POINTS WESTWARD. MANY OF THE MESO MODELS SHOW A CONVECTIVE LINE OF STORMS DEVELOPING ACRS WESTERN NY/PA THIS AFTN...QUICKLY LIFTING NE AND IMPACTING OUR REGION BTWN 21Z AND 03Z THIS EVENING...WITH GREATEST PROGGED COMPOSITE REFLECTIVITY STRUCTURES ACRS NORTHERN NY. OTHERWISE...WL TAPER LIKELY/CAT POPS TO CHC WORDING AFT MIDNIGHT WITH TEMPS DROPPING BACK INTO THE 50S MTNS TO 60S VALLEYS. SFC GRADIENT SHOULD PREVENT WIDESPREAD FOG FORMATION. MAYBE A FEW PATCHY AREAS IN THE DEEPER VALLEYS. && .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH THURSDAY NIGHT/... AS OF 415 PM EDT TUESDAY...MID/UPPER LVL TROF WL BUILD ACRS THE NE CONUS FOR WEDS THRU THURS NIGHT...RESULTING IN MUCH COOLER AND DRIER AIR...ESPECIALLY BY THURS. LATEST PROGS CONT TO SHOW ANOTHER 5H VORT IN THE FLW ALOFT...ALONG WITH A RIBBON OF ENHANCED 850 TO 500MB RH...WHICH MAY PRODUCE AN ISOLATED TO SCATTERED THREAT FOR SHOWERS ON WEDS. INSTABILITY IS LIMITED...SO ANTICIPATING ISOLATED/SCATTERED SHOWERS WITH AN EMBEDDED RUMBLE OF THUNDER...BEST SFC BASED CAPE IS WELL TO OUR SOUTH. CWA WL BE UNDER LLVL CAA ON WEDS...WITH PROGGED 85H TEMPS DROPPING BTWN 8C (SLV) TO 12C (CT RIVER VALLEY)...SUPPORTING HIGHS IN THE 60S DACKS TO L/M 70S SLV/NEK/MTNS OF VT...MID/UPPER 70S CPV...TO L80S NEAR VSF. EXPECTING TEMPS MAINLY IN THE U40S TO U50S ON WEDS NIGHT...WITH PARTLY CLOUDY SKIES. BY THURS INTO THURS NIGHT...1024MB SFC HIGH PRES BUILDS DIRECTLY OVERHEAD...WITH MID/UPPER LVL TROF AXIS ACRS OUR CWA. THIS ULVL SUPPORT WL COMBINED WITH SOME SFC HEATING/LEFTOVER BL MOISTURE TO PRODUCE DIURNALLY DRIVEN CUMULUS CLOUDS...ESPECIALLY ACRS THE TRRN ON THURS. PROGGED 85H TEMPS FALL ANOTHER COUPLE OF DEGREES AND RANGE BTWN 6-9C ON THURS...SUPPORTING HIGHS IN THE 60S MTNS TO 70S VALLEYS. A COOL NIGHT IS ANTICIPATED ON THURS NIGHT WITH SOME FOG POSSIBLE...WITH LIGHT WINDS AND CLR SKIES...TEMPS WL FALL BACK INTO THE U30S/L40S COLDER VALLEYS TO U40S/L50S CPV/UHI. && .LONG TERM /FRIDAY THROUGH TUESDAY/... AS OF 416 PM EDT TUESDAY...THIS PERIOD WL FEATURE A TRANSITION BTWN MID/UPPER LVL TROF INTO A FAST WESTERLY FLOW ALOFT...BEFORE ANOTHER TROF DEVELOPS BY EARLY NEXT WEEK. TIMING OF INDIVIDUAL S/W FEATURES IN THE FLW ALOFT AND AMOUNT OF AVAILABLE MOISTURE WL BECOME INCREASINGLY MORE DIFFICULT ON SAT/SUN INTO EARLY NEXT WEEK. SFC HIGH PRES SHOULD KEEP FRIDAY AND SATURDAY DRY WITH TEMPS NEAR NORMAL ON FRIDAY AND SLIGHTLY ABOVE NORMAL VALUES BY SATURDAY. THE THREAT FOR SHOWERS/STORMS INCREASES ON SUNDAY INTO MONDAY...ASSOCIATED WITH EMBEDDED S/W ENERGY AND SFC BOUNDARY. BEST CHC FOR THUNDERSTORMS WL BE NEXT MONDAY...WHEN THE COMBINATION OF ULVL SUPPORT INTERACTS WITH BEST LLVL INSTABILITY. WL KEEP POPS AT CHC FOR SUNDAY/MONDAY AND WAIT FOR BETTER TIMING WITH TROF DEVELOPMENT BEFORE INCREASING TO LIKELY. PROGGED 85H TEMPS WARM BTWN 14-16C AHEAD OF APPROACHING BOUNDARY BY 00Z MONDAY...SUPPORTING HIGHS MAINLY IN THE 80S. SOME INCREASE IN LLVL MOISTURE WITH DWPTS WARMING BACK INTO THE 60S...WL INCREASE THE HUMIDITY VALUES...ESPECIALLY BY SUNDAY NIGHT INTO MONDAY. && .AVIATION /20Z TUESDAY THROUGH SUNDAY/... THROUGH 18Z WEDNESDAY...WILL HAVE SHOWERS AND THUNDERSTORMS DEVELOP ACROSS THE AREA THIS EVENING. DIFFICULT RIGHT NOW TO PINPOINT TIMING...HAVE INCLUDED VCTS AT THIS TIME FROM ABOUT 21Z TO 05Z. UNTIL THEN CLOUDS WILL BE VARIABLE BUT VFR WITH GUSTY SOUTH WINDS. STORMS THAT DEVELOP THIS EVENING MAY PRODUCE DAMAGING WINDS. FLIGHT CONDITIONS WILL LIKELY BE LOWERED TO MVFR/IFR AT TIMES. WILL HANDLE STORMS WITH TEMPO GROUPS AS THEY DEVELOP. TOO DIFFICULT TO TRY TO PINPOINT AT THIS TIME. IF SKIES CLEAR ENOUGH AND WINDS CALM DOWN ENOUGH...COULD HAVE SOME FG/BR FORM. WINDS WILL ONCE AGAIN BE GUSTY OUT OF THE SOUTHWEST ON WED AFTER 12Z WITH A SCT CLOUD DECK. OUTLOOK 18Z WEDNESDAY THROUGH SUNDAY... 18Z WED - 00Z THU...VFR WITH PERIODS OF MVFR/IFR POSSIBLE IN SCATTERED SHOWERS AND THUNDERSTORMS. 00Z THU - SUN...VFR UNDER HIGH PRESSURE. ISOLATED TERRAIN DRIVEN MVFR SHOWERS POSSIBLE THURSDAY. && .BTV WATCHES/WARNINGS/ADVISORIES... VT...NONE. NY...NONE. && SYNOPSIS...TABER NEAR TERM...TABER SHORT TERM...TABER LONG TERM...TABER AVIATION...NEILES
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BURLINGTON VT 441 AM EDT TUE JUL 8 2014 NYZ026>031-034-035-087-VTZ001>012-016>019-090845- 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- 441 AM EDT TUE JUL 8 2014 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 THIS AFTERNOON AND EVENING...IN ADVANCE OF A COLD FRONT. SOME OF THE STORMS MAY BECOME STRONG TO SEVERE...WITH STRONG GUSTY WINDS BEING THE GREATEST THREAT. THE BEST CHANCE FOR SEVERE STORMS WILL BE ACROSS SOUTHERN PORTIONS OF THE FORECAST AREA. IN ADDITION...THERE IS THE POTENTIAL FOR HEAVY DOWNPOURS WHICH MAY PRODUCE FLOODING OF POOR DRAINAGE AND LOW LYING AREAS. ALSO...IF STORMS MOVE OVER THE SAME AREA REPEATEDLY...FLOODING MAY RESULT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 1154 AM EDT TUE JUL 8 2014 NYZ026>031-034-035-087-VTZ001>012-016>019-081900- 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 1154 AM EDT TUE JUL 8 2014 ...SCATTERED STRONG TO SEVERE THUNDERSTORMS ARE LIKELY THIS AFTERNOON AND EVENING ACROSS THE NORTH COUNTRY... THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE SAINT LAWRENCE VALLEY AND NORTHERN ADIRONDACK MOUNTAINS THIS AFTERNOON AND SPREAD INTO THE CHAMPLAIN VALLEY AND MOST OF VERMONT BY EARLY EVENING. THESE STORMS WILL BE CAPABLE OF PRODUCING LOCALIZED DAMAGING WIND GUSTS TO 60 MPH OR GREATER...WHICH MAY DOWN TREES AND POWER LINES. IN ADDITION...ANY STORMS WILL BE CAPABLE OF DANGEROUS CLOUD TO GROUND LIGHTNING...BRIEF HEAVY DOWN POURS...AND SMALL HAIL. PLEASE STAY TUNED TO NOAA WEATHER RADIO...YOUR LOCAL MEDIA...OR GO TO WWW.WEATHER.GOV/BURLINGTON FOR FURTHER UPDATES ON THIS WEATHER SITUATION.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BURLINGTON VT
433 PM EDT TUE JUL 8 2014
NYZ029-030-087-082130-
SOUTHEASTERN ST. LAWRENCE NY-SOUTHERN FRANKLIN NY-
SOUTHWESTERN ST. LAWRENCE NY-
433 PM EDT TUE JUL 8 2014
...A STRONG THUNDERSTORM WILL MOVE THROUGH EASTERN ST. LAWRENCE AND
WEST CENTRAL FRANKLIN COUNTIES...
AT 431 PM EDT...A STRONG THUNDERSTORM WAS 5 MILES EAST OF
HARRISVILLE...MOVING NORTHEAST AT 50 MPH.
WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.
LOCATIONS IMPACTED INCLUDE BUT ARE NOT LIMITED TO...
FINE...OSWEGATCHIE...DEGRASSE...SOUTH RUSSELL...WEST PIERREPONT...
NORTH RUSSELL...SOUTH COLTON...STARK...HOPKINTON...PARISHVILLE...
NICHOLVILLE...ST. REGIS FALLS...
GET TO SAFETY IMMEDIATELY WHEN THREATENING WEATHER APPROACHES.
LAT...LON 4468 7428 4407 7480 4404 7506 4420 7542
4475 7499
NEILESSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 456 PM EDT TUE JUL 8 2014 NYZ026>031-034-035-087-082300- NORTHERN ST. LAWRENCE-NORTHERN FRANKLIN-EASTERN CLINTON- SOUTHEASTERN ST. LAWRENCE-SOUTHERN FRANKLIN-WESTERN CLINTON- WESTERN ESSEX-EASTERN ESSEX-SOUTHWESTERN ST. LAWRENCE- INCLUDING THE CITIES OF...MASSENA...MALONE...PLATTSBURGH... STAR LAKE...SARANAC LAKE...TUPPER LAKE...DANNEMORA... LAKE PLACID...PORT HENRY...TICONDEROGA...OGDENSBURG...POTSDAM... GOUVERNEUR 456 PM EDT TUE JUL 8 2014 ...SEVERE THUNDERSTORM DAMAGING WINDS ARE LIKELY ACROSS NORTHERN NEW YORK THIS EVENING... A LINE OF SEVERE THUNDERSTORMS WILL DEVELOP ACROSS THE SAINT LAWRENCE VALLEY BETWEEN 530 PM AND 630 PM THIS EVENING AND SPREAD INTO ALL OF NORTHERN ADIRONDACKS THROUGH 730 PM. THIS LINE OF THUNDERSTORMS WILL BE CAPABLE OF WIDESPREAD DAMAGING WIND GUSTS OF 60 MPH OR GREATER...WHICH WILL CAUSE DOWN TREES AND POWER LINES. THIS LINE COULD IMPACT THE CHAMPLAIN VALLEY BY 8 PM. STAY TUNED FOR SEVERE THUNDERSTORM WARNINGS AS THE THREAT BECOMES MORE IMMINENT.
The Burlington radar (KCXX), 60 km away, was scanning. The volume nearest the first event began at 21:38 UTC.
14 thunderstorm wind, 1 funnel cloud. Local standard time, as filed.
Several small trees down by thunderstorm winds.
Numerous trees down along Route 3 and Cranberry Lake.
Trees and large branches down.
Large tree down on trailer, no injuries.
Several large tree limbs downed by thunderstorm winds.
Several trees down approaching Potsdam.
Large tree down on house with some structural damage.
Numerous trees and power lines down throughout Potsdam, including State Route 11 and County routes 58 and 24 were impassable.
Trees and wires down by thunderstorm winds.
Funnel cloud caught on videotape and reviewed by NWS Burlington office...no evidence of touchdown.
Several trees and large branches downed by thunderstorm winds.
Several areas of trees and power lines down in the vicinity of Exit 29 on Interstate 87.
Large maple tree and other smaller trees down.
Several trees down, including on vehicle and home.
Tree and several large branches along route 74.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2014Every state in 2014This day in weather historyWarnings in New York, July 2014
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: 518083, 518068, 518070, 518072, 518078, 518081, 518074, 518076, 518080, 518067, 518082, 518087, 518102, 518097, 518094.