An upper level disturbance brought a round of thunderstorms to the Finger Lakes region during the early afternoon hours. Hail up to an inch and a half was reported and the thunderstorms winds downed trees and power lines.
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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 BUF wrote it up.
An upper level disturbance brought a round of thunderstorms to the Finger Lakes region during the early afternoon hours. Hail up to an inch and a half was reported and the thunderstorms winds downed trees and power lines. Several thousand customers lost power because of the storm. Poor drainage flooding was reported. The LPGA tournament at Locust Hill Country Club was temporarily suspended by the storms.
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 Buffalo, NY wrote its last area forecast discussion before the first event at Jun 26, 9:51 AM EST, 1 hour 12 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BUFFALO NY 1051 AM EDT FRI JUN 26 2009 .SYNOPSIS... A COLD FRONT WILL CONTINUE TO MOVE ACROSS THE REGION THIS AFTERNOON SETTING OFF A FEW SHOWERS AND THUNDERSTORMS. HIGH PRESSURE WILL THEN MOVE EAST ACROSS THE GREAT LAKES AND PROVIDE FINE SEASONAL WEATHER ON SATURDAY. ANOTHER UPPER LOW WILL APPROACH LATER SUNDAY WITH THE THREAT OF SHOWERS. THIS LOW WILL REMAIN NEARLY STATIONARY OVER THE EASTERN LAKES THROUGH AT LEAST WEDNESDAY WHICH WILL RESULT IN UNSETTLED WEATHER FOR MOST OF NEXT WEEK. && .NEAR TERM /THROUGH TONIGHT/... THE FIRST ROUND OF SHOWERS/THUNDERSTORMS IS MARCHING ACROSS THE NIAGARA FRONTIER ATTM. WHILE ANOTHER SHOWER CANNOT BE RULED OUT I WOULD EXPECT ONCE THIS BATCH GOES THROUGH TO SEE LITTLE IN THE WAY OF ADDITIONAL PRECIP FOR THE BUF/IAG METRO AREAS. TO THE EAST AND HOWEVER MORE DIURNAL CONVECTION WILL CONTINUE TO DEVELOP WITH INCREASING DAYTIME INSTABILITY. WHILE THE ACTIVITY WILL NOT BE AS WIDESPREAD OR CONCENTRATED AS WAS SEEN YESTERDAY...THE EXPECTED INSTABILITY WILL STILL BE PLENTY STRONG ENOUGH / LIS OF -4 TO -9 AND SBCAPES OF 1000-1500 J/KG / AND DEEP ENOUGH TO ONCE AGAIN LEAD TO THE POTENTIAL FOR SOME STRONG TO MARGINALLY SEVERE PULSE STORMS...ESPECIALLY CONSIDERING THE CONTINUED WEST- NORTHWESTERLY FLOW ALOFT. RATHER THAN GENERAL 40 POP ACROSS THE AREA WILL SHOW A TREND TOWARD HIGHER POPS TO THE EAST WITH DECREASING POPS WEST. ANY DIURNAL CONVECTION FROM THIS AFTERNOON SHOULD GRADUALLY DIE DOWN THIS EVENING WITH THE LOSS OF DIURNAL HEATING...WITH THE EXCEPTION OF AREAS EAST OF LAKE ONTARIO WHERE A SHOWER THREAT SHOULD LINGER THROUGH THE NIGHT GIVEN THE CLOSER PROXIMITY TO THE UPPER LOW OVER NEW ENGLAND. && .SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/... THE RIDGE OVER THE UPPER GREAT LAKES WILL EASE ACROSS THE OHIO VALLEY AND EASTERN GREAT LAKES SATURDAY AND SATURDAY NIGHT. WILL AGAIN INCLUDE THE MENTION OF A BRIEF SHOWER OR TWO EAST OF LAKE ONTARIO DURING THE DAY SATURDAY...HOWEVER THE VAST MAJORITY OF SATURDAY AND SATURDAY NIGHT SHOULD BE RAINFREE. PARTLY TO MOSTLY SUNNY SKIES AND H85 TEMPS OF +14C WILL SUPPORT MAX TEMPS IN THE UPPER 70S TO LOWER 80S. ON SUNDAY...CONDITIONS WILL DETERIORATE FROM WEST TO EAST AS A STRONG DIGGING SHORTWAVE OVER THE UPPER GREAT LAKES WILL CIRCULATE A COLD FRONT ACROSS THE REGION. THERE IS SOME DISCREPANCY IN THE TIMING AMONG THE MODELS WITH THE GFS FASTEST AND ECMWF SLOWER AND HOLDING SHOWERS OFF UNTIL SUN EVENING. DELAYED THE POPS UNTIL THE AFTERNOON AND LOWERED POPS A TOUCH. THIS ACTIVITY WILL BE WEAKENING AS IT ENCOUNTERS SUBSIDENCE OVER OUR AREA ON BACKSIDE OF SLOWLY DEPARTING UPPER LOW OVER NEW ENGLAND...A TRAFFIC JAM OF SORTS. A DRY SLOT WILL THEN WORK ITS WAY NORTHWARDS ACROSS OUR REGION IN THE WAKE OF THE COLD FRONT SUNDAY NIGHT. THIS SHOULD ALLOW THE BULK OF ANY LEFTOVER SHOWERS TO END FROM WEST TO EAST. && .LONG TERM /MONDAY THROUGH THURSDAY/... THIS PERIOD WILL BE QUITE UNSETTLED AS AN ANOMALOUSLY DEEP H5 CLOSED LOW WILL BE NEARLY STATIONARY OVER THE EASTERN GREAT LAKES. WHILE THERE WILL BE FREQUENT RAINFREE PERIODS...SOME FOR AS LONG AS 3 TO 6 HOURS...THERE WILL ALSO BE FAIRLY WIDESPREAD SHOWER ACTIVITY. WILL COVER THE BULK OF THIS PERIOD WITH CHC POPS FOR SHOWERS AND FINE TUNE AS THE EVENT UNFOLDS AND BECOMES MORE MANAGEABLE BY THE GUIDANCE PACKAGES. WILL INCLUDE THUNDER IN MONDAYS FORECAST ONLY AS REGION WILL BE ON EAST (WARMER) SIDE OF UPPER LOW THEN. ALONG WITH THE FREQUENT SHOWERS...TEMPS DURING THIS PERIOD WILL AVERAGE A FEW DEGREES BELOW NORMAL. THE NICEST DAY OF THIS STRETCH WILL LIKELY BE THURSDAY AS THE CLOSED LOW WILL START TO OPEN UP AND LIFT OUT TO OUR EAST. && .AVIATION /15Z FRIDAY THROUGH TUESDAY/... THE COMBINATION OF DIURNAL HEATING AND CONTINUED MID AND UPPER LEVEL TROUGHING WILL LEAD TO THE CONTINUED DEVELOPMENT OF SCATTERED CONVECTION THIS AFTERNOON. THE ACTIVITY WILL SLOWLY WANE AFTER SUNSET...EXCEPT EAST OF LAKE ONTARIO WHERE SCATTERED SHOWERS WILL PERSIST THROUGH THE NIGHT. GENERAL VFR CONDITIONS WILL BE THE RULE OUTSIDE OF ANY SHOWERS AND STORMS...WITH REDUCTIONS TO IFR/MVFR POSSIBLE WITHIN WHATEVER ACTIVITY MANAGES TO DEVELOP. OUTLOOK... SATURDAY...VFR. SUNDAY THROUGH TUESDAY...VFR/MVFR WITH A CHANCE OF SHOWERS/THUNDERSTORMS. && .MARINE... SCATTERED SHOWERS AND THUNDERSTORMS WILL BE THE RULE THROUGH THIS EVENING WITH CONDITIONS IMPROVING OVERNIGHT THROUGH SUNDAY MORNING WITH GENERALLY LIGHT WINDS. AN UPPER LOW WILL APPROACH THE AREA ON MONDAY AND LINGER THROUGH WEDNESDAY...BUT ITS ASSOCIATED SURFACE LOW WILL LIE VERY CLOSE TO OUR AREA...SO WINDS WILL NOT BE A FACTOR. THERE WILL BE SHOWER THREAT DAILY...WITH HIGHEST POSSIBILITIES DURING THE AFTERNOON AND EARLY EVENING HOURS EACH DAY. && .BUF WATCHES/WARNINGS/ADVISORIES... NY...NONE. MARINE...NONE. && SYNOPSIS...SFM NEAR TERM...LEVAN SHORT TERM...SFM LONG TERM...SFM AVIATION...LEVAN MARINE...LEVAN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BUFFALO NY 518 AM EDT FRI JUN 26 2009 NYZ001>008-010>014-019>021-085-270930- NIAGARA-ORLEANS-MONROE-WAYNE-NORTHERN CAYUGA-OSWEGO-JEFFERSON-LEWIS- NORTHERN ERIE-GENESEE-WYOMING-LIVINGSTON-ONTARIO-CHAUTAUQUA- CATTARAUGUS-ALLEGANY-SOUTHERN ERIE- 518 AM EDT FRI JUN 26 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND NORTH CENTRAL NEW YORK. .DAY ONE...TODAY AND TONIGHT. ISOLATED STRONG THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. THIS PRODUCT...ALONG WITH OTHER WATCHES...WARNINGS...ADVISORIES... AND STATEMENTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN BUFFALO CAN BE FOUND ON THE INTERNET AT HTTP://WWW.WEATHER.GOV/BUF LEZ020-040-041-LOZ042>045-062>065-SLZ022-024-270930- UPPER NIAGARA RIVER AND BUFFALO HARBOR- LAKE ERIE NEARSHORE WATERS FROM RIPLEY TO DUNKIRK- LAKE ERIE NEARSHORE WATERS FROM DUNKIRK TO BUFFALO- LAKE ONTARIO NEARSHORE WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH- LAKE ONTARIO NEARSHORE WATERS FROM HAMLIN BEACH TO SODUS BAY- LAKE ONTARIO NEARSHORE WATERS FROM SODUS BAY TO MEXICO BAY- LAKE ONTARIO NEARSHORE WATERS FROM MEXICO BAY TO THE SAINT LAWRENCE RIVER- LAKE ONTARIO OPEN WATERS FROM THE NIAGARA RIVER TO HAMLIN BEACH- LAKE ONTARIO OPEN WATERS FROM HAMLIN BEACH TO SODUS BAY- LAKE ONTARIO OPEN WATERS FROM SODUS BAY TO MEXICO BAY- LAKE ONTARIO OPEN WATERS FROM MEXICO BAY TO THE SAINT LAWRENCE RIVER- SAINT LAWRENCE RIVER FROM CAPE VINCENT TO OGDENSBURG- SAINT LAWRENCE RIVER FROM OGDENSBURG TO SAINT REGIS- 518 AM EDT FRI JUN 26 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE...LAKE ONTARIO AND SAINT LAWRENCE RIVER. .DAY ONE...TODAY AND TONIGHT. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED. THIS PRODUCT...ALONG WITH OTHER WATCHES...WARNINGS...ADVISORIES... AND STATEMENTS ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN BUFFALO CAN BE FOUND ON THE INTERNET AT HTTP://WWW.WEATHER.GOV/BUF SFM
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
611 AM EDT FRI JUN 26 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0545 AM TSTM WND DMG LYONS 43.06N 76.99W
06/26/2009 WAYNE NY LAW ENFORCEMENT
SEVERAL POWER LINES DOWN
&&
SMCLAUGHThe Buffalo radar (KBUF), 72 km away, was scanning. The volume nearest the first event began at 16:03 UTC.
5 hail, 4 thunderstorm wind. Local standard time, as filed.
Law enforcement reported numerous trees down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2009Every state in 2009This day in weather historyWarnings in New York, June 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: 181486, 181478, 181480, 181481, 181479, 181483, 181484, 181485, 181487.