A slow moving upper level low pressure area moved from the Great Lakes towards the Northeast between Wednesday, August 20th and Friday August 22nd. Several rounds of showers and thunderstorms occurred across the entire region during this time period.
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 ALY wrote it up.
A slow moving upper level low pressure area moved from the Great Lakes towards the Northeast between Wednesday, August 20th and Friday August 22nd. Several rounds of showers and thunderstorms occurred across the entire region during this time period.
During the evening on Wednesday, August 20th, slow moving thunderstorms produced two to four inches of rain across parts of the Mohawk Valley and Sacandaga Region. Despite this rainfall, no flooding was reported, but this rainfall led to ponding of water on roadways and helped to moisten up the ground conditions.
Another batch of heavy rainfall due to slow moving thunderstorms occurred the next day on Thursday, August 21st during the evening hours. Once again, several inches of rainfall occurred across the central Mohawk Valley. With the ground saturated due to the recent rainfall, small streams and creek quickly overspread their banks. This led to flash flooding across parts of west-central Montgomery and northern Schoharie Counties, with many roads washed out and closed. At least 15 roads were closed in Montgomery County, including an onramp for the New York State Thruway, and a State of Emergency was issued for the county due to the flooding. The flooding caused sewage treatments plans to be inundated with water and a boil water advisory was issued for several days due to the local water supply being compromised.
Some lighter rain showers occurred on Friday, August 22nd. Most of the damage was already done, although another minor mudslide occurred due to the already weakened ground conditions. Once showers ended by the afternoon of Friday, August 22nd, the water was able to recede and the ground conditions started to finally dry out. All road were reopened by Monday, August 25th at 9 am and the State of Emergency was lifted on the 25th as well.
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 Albany, NY wrote its last area forecast discussion before the first event at Aug 21, 5:52 PM EST, 1 hour 53 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ALBANY NY 652 PM EDT THU AUG 21 2014 .SYNOPSIS... A SLOW MOVING UPPER LEVEL LOW OVER THE EASTERN GREAT LAKES REGION WILL CONTINUE TO BRING SHOWERS AND THUNDERSTORMS...SOME WITH LOCALLY HEAVY RAIN...AS IT DRIFTS EASTWARD THROUGH TONIGHT. THE UPPER LEVEL LOW WILL TRACK OFF THE COAST TOMORROW WITH A FEW LINGERING SHOWERS AND COOL TEMPERATURES OVER THE AREA. IMPROVING CONDITIONS ARE EXPECTED OVER THE WEEKEND AS HIGH PRESSURE BUILDS AT ALL LEVELS OF THE ATMOSPHERE FROM QUEBEC INTO THE NORTHEAST. IT WILL BRING INCREASING AMOUNTS OF SUNSHINE AND WARMER TEMPERATURES INTO NEXT WEEK. && .NEAR TERM /UNTIL 6 AM FRIDAY MORNING/... AS OF 652 PM EDT...AN UPPER LEVEL LOW IS CURRENTLY SITUATED OVER THE EASTERN PORTION OF LAKE ONTARIO. THIS UPPER LEVEL ENERGY HAS PROVIDED THE LIFT FOR THE SHOWERS AND THUNDERSTORMS THAT HAVE BEEN ONGOING FROM THE AFTERNOON AND INTO THE EVENING HOURS SO FAR. WITH PLENTY OF CLOUD COVER IN PLACE...SFC BASED INSTABILITY IS LIMITED...WHICH IS HELPING KEEP THE THREAT FOR SEVERE WEATHER LOW. THE LATEST LAPS ANALYSIS SHOWS ONLY UP TO 1000 J/KG OF SFC BASED CAPE CURRENTLY PRESENT...WITH THE HIGHEST VALUES IN THE WESTERN AND SOUTHERN PARTS OF THE CWA. THERE IS MORE SFC BASED CAPE ACROSS CENTRAL NY AND INTO NE PA...AND THESE ARE THE LOCATIONS WHERE A HANDFUL OF SEVERE REPORTS HAVE OCCURRED TODAY. WITH THE LOSS OF DAYTIME HEATING...WE SEE NO REASON WHY CAPE SHOULD CONTINUE TO WANE...AND KEEP THE THREAT FOR SEVERE STORMS FROM OUR AREA. THUNDER WILL CONTINUE TO OCCUR...AS ELEVATED INSTABILITY WILL BE PRESENT. ALSO...WITH PWATS ABOVE NORMAL /AROUND 1.63 INCHES FROM THIS MORNINGS KALY SOUNDING/...DEW POINTS INTO THE 60S...AND HIGH FZL LEVELS /FZL LEVELS AROUND 12000 FT/....THE THREAT FOR HEAVY RAINFALL WILL CONTINUE TO BE POSSIBLE WITH ANY SHOWER OR THUNDERSTORM...AS WARM RAIN PROCESSES WILL DOMINATE. SEVERAL CLUSTERS OF SHOWERS/THUNDERSTORMS HAVE PRODUCED ONE TO TWO INCHES OF RAIN IN A SHORT PERIOD OF TIME...AND A FEW FLOOD ADVISORIES HAVE BEEN ISSUED TO ADDRESS THESE SHOWERS/THUNDERSTORMS. WITH SHOWERS/THUNDERSTORMS STILL ONGOING...ESPECIALLY ACROSS THE ADIRONDACKS AND MOHAWK VALLEY...THE THREAT FOR ADDITIONAL MINOR FLOOD CONCERNS WILL CONTINUE...AS THIS ACTIVITY MOVES EASTWARD. LUCKILY...THERE IS ENOUGH FLOW TO KEEP THE SHOWERS/THUNDERSTORMS MOVING ALONG...AND PREVENT TOO MUCH FROM FALLING OVER ANY ONE PARTICULAR LOCATION. STILL...WE WILL CONTINUE TO MONITOR FOR THE POTENTIAL FOR LOCALIZED FLOODING OVER THE NEXT FEW HOURS. SEE OUR HYDRO DISCUSSION FOR MORE DETAILS. POPS TAPER DOWN TO CHANCE FOR LATE TONIGHT /BY ABOUT MIDNIGHT OR SO/ AS THE CORE OF THE UPPER LEVEL LOW MOVES OVERHEAD...AND THE BEST FORCING STARTS TO SHIFT EAST OF THE AREA. HOWEVER...IT STILL LOOKS TO REMAIN CLOUDY THROUGH THE OVERNIGHT HOURS...WITH MIN TEMPS MAINLY IN THE UPPER 50S TO MID 60S. && .SHORT TERM /6 AM FRIDAY MORNING THROUGH SATURDAY NIGHT/... TOMORROW...THE UPPER LEVEL LOW WILL START TO SHIFT OFFSHORE. HOWEVER...CYCLONIC FLOW AROUND THIS SYSTEM WILL CONTINUE TO ALLOW FOR THE THREAT FOR SOME SCATTERED SHOWERS...ESP DURING DAYTIME HEATING. ANY RAINFALL WILL BE MUCH LIGHTER ON FRIDAY...AS THE BEST MOISTURE WILL BE STARTING TO SHIFT SOUTH AND EAST TOWARDS SOUTHERN NEW ENGLAND. IT STILL LOOKS TO STAY FAIRLY CLOUDY WITH THE UPPER LOW NEARBY...SO TEMPS WILL BE HELD DOWN. MAX TEMPS WILL ONLY BE IN THE UPPER 60S TO MID 70S. THE UPPER LEVEL LOW WILL CONTINUE TO MOVE AWAY FROM THE REGION BETWEEN FRIDAY NIGHT AND SATURDAY. A LINGERING SPRINKLE OR SHOWER CANNOT TOTALLY BE RULED OUT OVER THE HIGH TERRAIN...OTHERWISE IT LOOKS TO BE DRY. FINALLY...SOME BREAKS IN THE CLOUDS WILL START TO OCCUR...ESP BY SAT MORNING FROM NORTH TO SOUTH...AS DRIER AIR STARTS TO WORK IN FROM SOUTHERN CANADA. MIN TEMPS FRI NIGHT WILL BE IN THE 50S...WITH HIGHS ON SATURDAY IN THE 70S. UPPER LEVEL RIDGING WILL START TO BUILD INTO THE AREA FOR SATURDAY NIGHT FROM THE GREAT LAKES AND OHIO VALLEY. WITH CLEARING SKIES AND LIGHT WINDS...GOOD RADIATIONAL COOLING CAN BE EXPECTED...ALLOWING FOR TEMPS TO FALL EASILY. OVERNIGHT LOWS WILL RANGE FROM THE UPPER 40S OVER THE ADIRONDACKS TO THE MID 50S IN THE CAPITAL REGION AND MID HUDSON VALLEY. && .LONG TERM /SUNDAY THROUGH THURSDAY/... HIGH PRESSURE DOMINATES THE WEATHER OVER THE REGION SUNDAY THROUGH WEDNESDAY WITH GRADUAL WARMING EACH DAY AS THE HIGH PRESSURE BUILDS OFFSHORE. HIGHS SUNDAY AND MONDAY IN THE MID 70S TO LOWER 80S. HIGHS TUESDAY AND WEDNESDAY IN THE LOWER TO MID 80S...WITH UPPER 70S TO LOWER 80S IN HIGHER TERRAIN. A WEAK COLD FRONT JUST BEGINS TO APPROACH WEDNESDAY NIGHT AND THURSDAY BUT THE LOW LEVEL THERMAL RIDGING SHOULD STILL BE IN PLACE. SO...JUST SOME ISOLATED SHOWERS AND THUNDERSTORMS WEDNESDAY NIGHT AND THURSDAY WITH HIGHS THURSDAY IN THE 80S. && .AVIATION /00Z FRIDAY THROUGH TUESDAY/... PRIMARY 500HPA SHORT WV IS MOVING INTO FCA W/ITS ASSOC WK SFC TROF...AND SCT -SHRA/TSTMS ARE EVOLVING INTO MORE WIDESPREAD -SHRA...AND EMBEDDED TSTMS AS THEY ARE MVNG INTO AREAS OF ELEVATED CAPE. CIGS AND OR VSBYS WILL BE MVFR DURING THIS EVENING...WITH AREAS IFR IN TSTMS THIS EVENING...BCMG IFR OVERNIGHT WITH LOWERING CIGS AND AREAS OF FOG FORMING. WINDS WILL BE LIGHT NORTHEAST TO SOUTHEAST THIS EVENING BCMG NEAR CALM OVERNIGHT. FRI THE SFC TROF WILL LINGER NR WESTERN PERIPHERY OF FCA...AS SVRL 500HPA SHORT WVS DROP SE IN WAKE OF THE DEPARTING 500HPA CUTOFF. SCT-BKN -SHRA WILL DIM THROUGH THE DAY AS DRIER AIR FILTERS IN LLVLS FROM HIGH PRESSURE BUILDING SOUTH UNDER 500HPA RIDGE OVER QB. WINDS WILL BCMG LIGHT NE. CIGS/VSBY WILL BE MVFR MUCH OF THE DAY...IMPVG TO VFR TWRDS EVNG. OUTLOOK... FRIDAY NIGHT: LOW OPERATIONAL IMPACT. NO SIG WX. SATURDAY: NO OPERATIONAL IMPACT. NO SIG WX. SATURDAY NIGHT: NO OPERATIONAL IMPACT. NO SIG WX. SUNDAY: NO OPERATIONAL IMPACT. NO SIG WX. SUNDAY NIGHT: NO OPERATIONAL IMPACT. NO SIG WX. MONDAY: NO OPERATIONAL IMPACT. NO SIG WX. MONDAY NIGHT: NO OPERATIONAL IMPACT. NO SIG WX. TUESDAY: NO OPERATIONAL IMPACT. NO SIG WX. && .FIRE WEATHER... SHOWERS AND THUNDERSTORMS LATE THIS AFTERNOON INTO TONIGHT WILL KEEP FIRE WEATHER CONCERNS AT A MINIMUM. RH VALUES WILL BE NEAR 100 PERCENT IN MOST LOCATIONS TONIGHT. WITH CLOUDS AND SCATTERED SHOWERS AROUND TOMORROW...RH VALUES WILL REMAIN ABOVE 70 PERCENT THROUGH THE ENTIRE DAY...WITH LIGHT AND VARIABLE WINDS. && .HYDROLOGY... SHOWERS AND THUNDERSTORMS ARE CURRENTLY MOVING ACROSS THE REGION THANKS TO A SLOW MOVING UPPER LEVEL LOW. THESE HEAVIEST OF THESE SHOWERS AND THUNDERSTORMS ARE PRODUCING HEAVY RAINFALL OF UP TO TWO INCHES PER HOUR. SOME AREAS...GENERALLY FROM AROUND AMSTERDAM NORTHEAST ACROSS THE SACANDAGA LAKE AND INTO WESTERN SARATOGA COUNTY...SAW TWO TO FOUR INCHES OF RAIN LAST NIGHT. SOME PARTS OF THE ADIRONDACKS AND MOHAWK VALLEY SAW AN ADDITIONAL ONE TO TWO INCHES OF RAIN WITH THE LATEST ACTIVITY LATE THIS AFTERNOON INTO THIS EVENING. ELSEWHERE...GROUND CONDITIONS HAVE BEEN RATHER DRY...DUE TO A LACK OF RECENT RAINFALL. AS A RESULT...MOST AREAS WILL BE ABLE TO HANDLE SOME RAINFALL. HOWEVER...IF HEAVY RAIN OCCURS OVER THOSE AREAS THAT SAW RAINFALL LAST NIGHT OR IF RAINFALL REPEATEDLY MOVES OVER THE SAME LOCATION THROUGH INTO EVENING...THEN SOME MINOR FLOODING OF URBAN...POOR DRAINAGE AND LOW LYING AREAS MAY OCCUR. AN ISOLATED FLASH FLOOD CANNOT TOTALLY BE RULED OUT...ALTHOUGH ANY POSSIBLE FLOOD ISSUES WOULD LIKELY BE MORE OF THE POOR DRAINAGE/URBAN TYPE CONCERNS. THE THREAT FOR HEAVY RAINFALL WILL END TONIGHT...AS THE BEST FORCING STARTS TO SHIFT AWAY FROM THE AREA. EVEN THOUGH THERE MAY SOME LINGERING RAIN SHOWERS INTO TOMORROW...NO ADDITIONAL HEAVY RAINFALL IS EXPECTED. WHILE THERE MAY BE SOME RISES ON MAIN STREAM RIVERS DUE TO THE RAINFALL...NO FLOODING OF LARGER RIVERS IS EXPECTED. WITH DRY WEATHER RETURNING FOR SUNDAY INTO NEXT WEEK...RIVER LEVELS WILL RECEDE AND/OR HOLD STEADY INTO NEXT WEEK. FOR DETAILS ON SPECIFIC AREA RIVERS AND LAKES...INCLUDING OBSERVED AND FORECAST RIVER STAGES AND LAKE ELEVATIONS...PLEASE VISIT THE ADVANCED HYDROLOGIC PREDICTION SERVICE /AHPS/ GRAPHS ON OUR WEBSITE. && .ALY WATCHES/WARNINGS/ADVISORIES... CT...NONE. NY...NONE. MA...NONE. VT...NONE. && SYNOPSIS...FRUGIS/SNYDER NEAR TERM...FRUGIS SHORT TERM...FRUGIS LONG TERM...NAS AVIATION...IRL/SNYDER FIRE WEATHER...FRUGIS HYDROLOGY...FRUGIS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ALBANY NY 409 PM EDT THU AUG 21 2014 CTZ001-013-MAZ001-025-NYZ032-033-038>043-047>054-058>061-063>066- 082>084-VTZ013>015-221100- NORTHERN LITCHFIELD-SOUTHERN LITCHFIELD-NORTHERN BERKSHIRE- SOUTHERN BERKSHIRE-NORTHERN HERKIMER-HAMILTON-SOUTHERN HERKIMER- SOUTHERN FULTON-MONTGOMERY-NORTHERN SARATOGA-NORTHERN WARREN- NORTHERN WASHINGTON-SCHOHARIE-WESTERN SCHENECTADY- EASTERN SCHENECTADY-SOUTHERN SARATOGA-WESTERN ALBANY-EASTERN ALBANY- WESTERN RENSSELAER-EASTERN RENSSELAER-WESTERN GREENE-EASTERN GREENE- WESTERN COLUMBIA-EASTERN COLUMBIA-WESTERN ULSTER-EASTERN ULSTER- WESTERN DUTCHESS-EASTERN DUTCHESS-NORTHERN FULTON-SOUTHEAST WARREN- SOUTHERN WASHINGTON-BENNINGTON-WESTERN WINDHAM-EASTERN WINDHAM- 409 PM EDT THU AUG 21 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWESTERN CONNECTICUT...WESTERN MASSACHUSETTS...EAST CENTRAL NEW YORK AND SOUTHERN VERMONT. .DAY ONE...TONIGHT. SHOWERS AND THUNDERSTORMS WILL AFFECT THE REGION THROUGH TONIGHT. SOME OF THE THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL...WHICH MAY LEAD TO MINOR FLOODING OF URBAN...LOW LYING AND POOR DRAINAGE AREAS. AN ISOLATED FLASH FLOOD CANNOT TOTALLY BE RULED OUT. WHILE THUNDERSTORMS ARE NOT EXPECTED TO BE SEVERE...AN ISOLATED STRONG WIND GUST CANNOT BE RULED OUT WITHIN ANY THUNDERSTORM THROUGH THIS EVENING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WHILE SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME...SPOTTERS ARE ENCOURAGED TO PASS ALONG ANY MEASURED RAINFALL TOTALS OR REPORTS OF FLOODED ROADWAYS TO THE NATIONAL WEATHER SERVICE.
The Albany radar (KENX), 55 km away, was scanning. The volume nearest the first event began at 00:46 UTC.
12 flash flood, 1 flood. Local standard time, as filed.
Heavy rainfall from several rounds of slow moving thunderstorms led to flash flooding in the Palatine Bridge Area. State Route 5 was closed at State Route 10 in Palatine Bridge due to high water.
State Route 10 at Groff Road in Stone Arabia was closed due to flash flooding from thunderstorm heavy rainfall.
Flash flooding occurred along West Ames Road in Ames between White Road and Bueld Road. The Canajoharie Creek overspread its banks due to heavy rainfall from repeated rounds of slow moving thunderstorms. A large hole was formed in the roadway as a result of the flooding.
Heavy rainfall from repeated rounds of slow moving thunderstorms led to flash flooding in Montgomery County. A mudslide along Route 5S closed the roadway between Canajoharie and Route 162 in Sprakers. Sprakers Road was also closed between Jump Road and the village of Canajoharie. The New York State Thruway was also closed at Exit 29 (Canajoharie) due to high water on the roadway between Exit 28 (Fultonville) and Exit 29 (Canajoharie).
Monk Road was washed out and closed in Sprakers due to flash flooding from heavy rainfall due to slow moving thunderstorms.
Route 162 at Flat Creek Road in Sprakers was closed due to flash flooding from thunderstorm heavy rainfall.
Flash flooding occurred in Ames due to repeated rounds of heavy rainfall from slow moving thunderstorms. State Route 10 was closed at Old Sharon Road in Ames due to high water.
U.S. Route 20 was closed in the village of Sharon Springs due to flash flooding from heavy rainfall due to slow moving thunderstorms.
Heavy rainfall from thunderstorms led to flash flooding Fonda. Excessive flooding occurred on both Main Street and Broadway in Fonda. Flooding was also reported at the intersection of Route 5 (Main Street) and Route 334 (Cayadutta Street). A State of Emergency was issued for the town due to extent of the flooding.
Numerous basements were inundated with water due to flash flooding from thunderstorm heavy rainfall in Sharon Springs.
Flash flooding occurred along the Canajoharie Creek in Canajoharie due to thunderstorm heavy rainfall. Old Sharon Road was closed between Carlisle Road and Maple Hill Road due to high water.
Route 67 was closed between Fort Johnson and Johnstown due to flooding and a mudslide from thunderstorm heavy rainfall.
A mudslide occurred near the intersection of Happy Hollow Road and Old Fort Plain Road due to recent heavy rainfall from slow moving thunderstorms.
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, August 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: 535318, 535394, 535399, 535322, 535339, 535392, 535397, 535324, 535328, 535330, 535402, 535406, 535341.