Hail, St. Lawrence
- When
- September 20, 5:25 AM EST to 5:35 AM EST
- Where
- St. Lawrence County, Newton Falls
- Measured
- 1.75 in hail
- Reported by
- TRAINED SPOTTER
- Coordinates
- 44.217, -74.983
Hail in New York, September 20, 2005
An upper level weather disturbance moved across southern Canada during the morning of September 20th. The associated surface low pressure system moved across Quebec Province, as the cold front moved southeast across New York during the morning of the 20th.
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
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
An upper level weather disturbance moved across southern Canada during the morning of September 20th. The associated surface low pressure system moved across Quebec Province, as the cold front moved southeast across New York during the morning of the 20th. Scattered thunderstorms along and ahead of this front resulted in large hail, gusty winds and locally very heavy rain in portions of St Lawrence county. The hail was restricted to the southern portion of the county, with hail up to 1.75 inches in diameter reported in Newton Falls.
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 Sep 20, 2:32 AM EST, 2 hours 53 minutes earlier.
Area forecast discussion, Sep 20, 2:32 AM EST, 2 hours 53 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BURLINGTON VT 332 AM EDT TUE SEP 20 2005 .SYNOPSIS... STORM SYS TO MOVE ACRS SRN CANADA TODAY...AS IT/S ASSOCIATED CF MOVES ACRS THE FA FROM THE WEST. WK HI PRESS TO AFFECT THE FA TONITE THRU WED NITE. ANOTHER CF TO MOVE DOWN ACRS THE GREAT LKS REGION AND SRN CANADA ON THU. .SHORT TERM (TODAY THROUGH THURSDAY)... 00-02Z RUC13 SHOWS TEMPS TO GET UP INTO THE M60S-M70S TODAY WITH S-SW SFC WINDS AT 5-15G30 KTS. T1MAX TEMPS ARE IN THE L70S-L80S TODAY. FEW TWEAKS TO FIRST PERIOD TEMPS/WINDS BASED ON THIS DATA AND MESONET OBS. LOW-LVL MSTR TO CONT TO AFFECT THE FA TODAY. RUC SHOWS MOCLDY SKIES ACRS THE FA TODAY. H85 CAA TO TAKE PLACE ACRS THE FA TODAY THRU EARLY ON WED...THEN WAA FOR LATER ON WED THRU THU. LOW-LVL MSTR ADVECTION TO TAKE PLACE ACRS THE FA EARLY TODAY AND AGAIN ON THU. SOME LOW-LVL MSTR TO AFFECT THE FA TONITE AND EARLY ON WED...AND AGAIN ON THU. LOW-LVL LAPSE RATES TO BE HI ACRS THE FA OVER THE NEXT 3 AFTERNOONS. SOME MID-LVL MSTR TO AFFECT THE FA EARLY TODAY AND THE NRN FA ON THU. PW VALUES ACRS THE FA LOOK TO BE 0.5-1.4 TODAY...0.5-0.75 TONITE THRU WED NITE...THEN AROUND AN INCH ON THU. CAPES ACRS THE FA APPEAR TO BE AOB 1100 J/KG TODAY AND BLW 1000 J/KG ON THU. ENVIRONMENT ACRS THE FA APPEARS TO BE MODERATE TO HIGHLY SHEARED WITH WET-BULB ZERO HTS OF 7-10 KFT TODAY. SHEAR APPEARS TO GET WEAKER WITH TIME ACRS THE FA AS THE DAY PROGRESSES TODAY THOUGH. LACK OF STRONG INSTABILITY AND PLENTY OF CLDS ACRS THE FA APPEAR TO BE LIMITING FACTORS FOR ANY SVR WX TODAY. WOULD NOT BE SURPRISED TO SEE ANY +TSRA THAT DO HAPPEN TO FORM ACRS THE FA CAUSING SOME STRONG WIND GUSTS THOUGH. LATER SHIFTS WILL NEED TO KEEP AN EYE ON THIS. FOR NOW...WILL CONT TO MENTION TS POSSIBLE ACRS THE FA TODAY WITH NO ENHANCED WORDING. IR SAT PIX SHOW PLENTY OF CLDS ACRS THE FA ATTM. BUFCAN/88D MOSAIC SHOWS A FEW LT RETURNS MOVING ACRS THE FA FROM THE WEST ATTM. WILL CONT TO HANG ONTO LIKELY POPS ACRS THE FA FOR ANY CONVECTION TODAY. THE REST OF THE GOING FCST FOR THE SHORT-TERM PERIOD LOOKS PRETTY GOOD...WITH THE NEXT SMALL CHC FOR ANY PCPN ACRS THE FA ON THU AFTERNOON. T1MIN TEMPS TONITE AND ON WED NITE APPEAR TO BASICALLY BE 45-55F. T1MAX TEMPS ARE 75-80 ON WED. .LONG TERM (THURSDAY NIGHT THROUGH MONDAY)... NO CHANGES TO THE GOING FCST FOR NOW...EXCEPT TO TRY AND MESH A LIL BETTER WITH SURROUNDING WFOS. WRK ZONES AND PRELIM ISC GRIDS AVAILABLE. ALL FINAL PRODUCTS BY 4 AM. .AVIATION... HV INDCD PTCHY IFR IN ERLY MRMG FG THRU ABT 10Z ACRS CNTRL/ERN VT DUE TO WK WNDS AND SLOWNESS OF MOISTURE TO ADVECT E. OTRW PTCHY FG AT KSLK THRU 08Z WITH UNRESTD VSBY ELSW BEFORE NXT WX SYS IMPACTS AREA. SFC LO OVR SRN ONT ERLY THIS MRNG FCST TO MOV ACRS SRN QUE TDY AND INTO THE GULF OF ST LAW TNGT. ONE WK FNTL BNDRY JUST N OF VT/CANADIAN BORDER WL NOT IMPACT OUR AREA. HOWEVER MAIN CDFNT ASOCD WITH SFC LO WL MOV W TO E ACRS OUR AREA DURG THE LATE MRNG AND ERLY AFTN. NOTED H/3 WND MAX ACRS NRN OH VLY BUT EXPECT FAVORED TSTM AREAS TO BE IN SRN CANADA AND FROM SRN NEW ENG SOUTHWARD. THUS HV JUST INDCD SHWRS AT TAF SITES. FOR TDY SCT-BKN CLDS AFT 12Z 040-060 BKN080 WITH VSBY 5SM AT TIMES IN SCT -SHRA. PCPN SHUD BE ENDG IN NRN NY ARND 16-18Z AND VT BY 20Z. TNGT EXPC SCT CLDS 060-080. HV INDCD S OR SW WND GSTS TO 25 KTS AFTR 12Z BASED ON VAD WND PROFILE AND H/8 DATA FM 00Z/19TH. SFC WND SHFTS TO W BY LATE MRNG AND ERLY AFTN. .BTV WATCHES/WARNINGS/ADVISORIES... VT...NONE. NY...NONE. && SYNOPSIS/SHORT TERM/LONG TERM...MURRAY AVIATION...SFH
Hazardous weather outlook, Sep 20, 3:12 AM EST, 2 hours 13 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BURLINGTON VT 412 AM EDT TUE SEP 20 2005 NYZ026>031-034-035-087-210815- NORTHERN ST. LAWRENCE-NORTHERN FRANKLIN-EASTERN CLINTON- SOUTHEASTERN ST. LAWRENCE-SOUTHERN FRANKLIN-WESTERN CLINTON- WESTERN ESSEX-EASTERN ESSEX-SOUTHWESTERN ST. LAWRENCE- 412 AM EDT TUE SEP 20 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN NEW YORK. .DAY ONE...TODAY AND TONIGHT THERE WILL BE SCATTERED SHOWERS AND THUNDERSTORMS THIS MORNING INTO THE EARLY AFTERNOON. A FEW THUNDERSTORMS MAY HAVE GUSTY WINDS. OTHERWISE NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. VTZ001>012-016>019-210815- 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- 412 AM EDT TUE SEP 20 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN VERMONT...CENTRAL VERMONT...NORTHWEST VERMONT AND NORTHEAST VERMONT. .DAY ONE...TODAY AND TONIGHT THERE WILL BE SCATTERED SHOWERS AND THUNDERSTORMS FROM MID MORNING INTO THE MID AFTERNOON. A FEW THUNDERSTORMS MAY HAVE GUSTY WINDS. OTHERWISE NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
In the hours before
Special weather statement, Sep 20, 4:53 AM EST, 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BURLINGTON VT 553 AM EDT TUE SEP 20 2005 NYZ026-027-029-030-087-201045- NORTHERN FRANKLIN-NORTHERN ST. LAWRENCE-SOUTHWESTERN ST. LAWRENCE-SOUTHEASTERN ST. LAWRENCE-SOUTHERN FRANKLIN- AT 543 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS FROM AROUND 5 MILES NORTH OF WEST PIERREPONT TO AROUND 25 MILES SOUTH OF FOWLER IN NEW YORK STATE...MOVING NORTHEAST AT 55 MPH. THESE STRONG THUNDERSTORMS...WITH WIND GUSTS IN EXCESS OF 40 MPH AND SMALL HAIL...WILL BE NEAR DE KALB...EDWARDS BY 610 AM...NEAR PYRITES...HERMON BY 620 AM...NEAR COLTON...WEST PIERREPONT BY 630 AM...NEAR PARISHVILLE...WADDINGTON BY 640 AM...NEAR MOIRA AND BURKE BY 650 AM. THESE THUNDERSTORMS ARE PRODUCING FREQUENT DEADLY LIGHTNING. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE BEFORE THESE STORMS APPROACH. MURRAY
The radar
The Ft Drum radar (KTYX), 76 km away, was scanning. The volume nearest the first event began at 10:22 UTC.
Event by event
1 hail. Local standard time, as filed.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Heat in Alabama, September 20, 2005
- Hurricane and Storm Surge in Florida, September 20, 2005
- Marine Thunderstorm Winds in North Atlantic Coastal Waters, September 20, 2005
- Lightning Strikes and Heavy Rain in California, September 20, 2005
- Dust Storm and Damaging Winds in California, September 20, 2005
- Tropical Storm in Florida, September 20, 2005
- Marine Thunderstorm Winds in Gulf of Mexico, September 20, 2005
- Damaging Winds in Virginia, September 20, 2005
- Hail and Heavy Rain in California, September 20, 2005
- Marine Thunderstorm Winds in Lake Erie, September 20, 2005
- Wildfire and Lightning Strike in California, September 20 to 21, 2005
- Wildfire and Lightning Strike in California, September 20, 2005
More
Every storm in New York in 2005Every state in 2005This day in weather historyWarnings in New York, September 2005
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: 5474996.