An approaching pre-frontal trough along with a passing upper level disturbance caused a squall line to form and move across the Lower Hudson Valley. The line caused wind damage across portions of the region.
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 OKX wrote it up.
An approaching pre-frontal trough along with a passing upper level disturbance caused a squall line to form and move across the Lower Hudson Valley. The line caused wind damage across portions of the region.
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 New York, NY wrote its last area forecast discussion before the first event at Aug 21, 11:44 AM EST, 2 hours 1 minute earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW YORK NY
1244 PM EDT FRI AUG 21 2009
.SYNOPSIS...
SOUTHERLY FLOW INCREASES TODAY AHEAD OF A STRONG COLD FRONT. THIS
COLD FRONT APPROACHES THE REGION TONIGHT AND REMAINS NEARLY
STATIONARY THROUGH SATURDAY...BEFORE SLOWLY MOVING ACROSS THE AREA
ON SUNDAY. HURRICANE BILL WILL PASS WELL EAST OF THE AREA SATURDAY
NIGHT THROUGH SUNDAY. AN UPPER TROUGH MOVES THROUGH ON SUNDAY...THEN
HIGH PRESSURE BUILDS IN EARLY IN THE WEEK.
FOR THE LATEST AND MOST UP TO DATE INFORMATION ON BILL...REFER TO
FORECASTS AND ADVISORIES ISSUED BY THE TROPICAL PREDICTION CENTER.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
SEVERE THUNDERSTORM WATCH #726/727 IN EFFECT FOR MUCH OF THE TRI-
STATE AREA. ALSO ISSUED COASTAL FLOOD ADVISORY FOR HIGH TIDE
CYCLES TONIGHT THROUGH SAT NIGHT AND HIGH SURF ADVISORY STARTING
SAT MORNING AND LASTING THROUGH SUN.
AREA REMAINS IN THE WARM SECTOR AS A COLD FRONT EVER SO SLOWLY
APPROACHES FROM THE WEST AHEAD OF TROUGH.
ANOTHER HOT AND HUMID DAY ON TAP...WITH SFC DEW POINTS QUITE HIGH
ONCE AGAIN. LAV/MAV/MET NUMBERS ALL PROG AT LEAST LOWER 70S
TDS...AND HEAT ADVISORY CONTINUES FOR NYC. PLENTY OF CLOUD COVER
COULD PREVENT TEMPS FROM ECLIPSING 90...BUT SHOULD COME CLOSE.
WITH PRECIP WATER CONTENTS ABOVE 2 INCHES...FLASH FLOODING A
CONCERN...PARTICULARLY NW OF NYC CLOSER TO FRONT.
SEAS AND RIP CURRENTS WILL BE A PROBLEM TODAY. FOR MORE INFORMATION
AND DETAILS...PLEASE SEE MARINE AND COASTAL FLOODING/TIDE SECTIONS.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY/...
SLOW MOVING COLD FRONT SLOWLY MOVES EAST...BUT WILL HAVE A
DIFFICULT TIME TRAVERSING ACROSS THE AREA AS NEXT EMBEDDED
SHORTWAVE DIVES ON BACK SIDE OF TROUGH AND REINFORCES IT. IN
ADDITION...BILL WILL ACT AS A BLOCK TEMPORARILY FOR ANY FURTHER
EASTWARD MOVEMENT OF THIS FRONT. AS SUCH...THE FRONT WILL CONTINUE
TO BE A FOCUSING MECHANISM FOR ANY SHOWER OR TSTM DEVELOPMENT
THROUGH SAT NIGHT AT THE LEAST. WITH AIRMASS SATURATED AND PRECIP
WATER CONTENT REMAINING 2 INCHES OR MORE...HEAVY DOWNPOURS AND
POTENTIAL FLASH FLOODING CONTINUES TO BE A CONCERN. LEANED TOWARD
NAM/EC AS THEIR SOLUTIONS REMAIN CLOSE TO ENSEMBLE SOLUTIONS WITH
MID LATITUDE TROUGH AND BILL.
REGARDING TROPICS...HURRICANE BILL CONTINUES ON A TRACK WELL EAST OF
THE FCST AREA...BUT DANGEROUS SEAS AND RIP CURRENTS WILL HAVE A
SIGNIFICANT IMPACT ON THE LOCAL AREA. PLEASE SEE MARINE AND COASTAL
FLOODING/TIDE SECTIONS FOR MORE DETAIL.
&&
.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
DEEP TROUGH OVER THE EASTERN US WILL SLOWLY FILL AND FLATTEN EARLY
IN THE WEEK AS DEEP RIDGING BUILDS INTO THE PLAINS AND THE WESTERN
ATLANTIC RIDGE RE-ESTABLISHES ITSELF. A SHORTWAVE TROUGH APPROACHING
FROM CENTRAL CANADA WILL REINFORCE THE TROUGHING OVER THE NORTHEAST
BY MIDWEEK.
EFFECTS FROM BILL SHOULD BE WINDING DOWN WITH PERHAPS JUST STRONG
RIPS CONTINUING AT THE OCEAN BEACHES ON MON. A WEAK WAVE OF LOW
PRES FORECAST TO BE JUST SOUTH OF LI MON MORNING WILL SLOWLY SLIDE
EAST. POSSIBLY A FEW SHOWERS AROUND SUN NIGHT AND MON. HIGH PRES
BUILDS IN MON NIGHT THROUGH TUE NIGHT...HOWEVER COULD HAVE A FEW
AIRMASS SHOWERS/TSTMS TUE AFTN AS WE REMAIN WARM SECTORED. A COLD
FRONT APPROACHES WED WITH SCT SHOWERS AND TSTMS DURING THE
AFTN/EVE HOURS. THE FRONT IS EXPECTED TO STALL OUT SOUTH OF LONG
ISLAND FOR THE BALANCE OF THE WEEK.
&&
.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
LOW STRATUS/FOG WILL BE PREVALENT ACROSS EASTERN CT AND LI
FOR THE NEXT FEW HOURS. WHERE FOG DOES OCCUR...PERIODS OF LIFR ARE
POSSIBLE.
WINDS GENERALLY LIGHT THIS MORNING...BECOMING SOUTHERLY FRIDAY.
LOCALLY HEAVY RAIN MAY PRODUCE IFR CAT CIGS AND VIS THIS
AFTERNOON. MOVED UP THE MENTION OF SHRA/TSRA IN TAFS BASED ON
COLLABORATION WITH AWC/ZNY. GIVEN VERY HIGH DEWPOINTS...CONVECTION
SHOULD NOT HAVE A DIFFICULT TIME DEVELOPING.
IFR/LIFR POSSIBLE IN PERIODS OF HEAVY RAIN OVERNIGHT INTO SAT AM.
VLIFR IN FOG POSSIBLE EASTERN LI AND CT AS WELL.
OUTLOOK 12Z SATURDAY THROUGH TUESDAY...
SATURDAY THROUGH SUNDAY EVENING: SUB VFR POSSIBLE IN SHOWERS AND
THUNDERSTORMS.
SUNDAY EVENING THROUGH TUESDAY: VFR.
&&
.MARINE...
/TODAY THROUGH EARLY SUNDAY/
OCEAN SWELLS RUNNING AROUND 3 FT....AT 8 TO 10 SEC. NOTED 15 SEC
PERIOD ON BUOY 44066 FOR AWHILE THIS MORNING...INDICATING THE
APPROACH OF SWELLS FROM HURRICANE BILL. WHILE THE LATEST FORECAST
TAKES BILL WELL EAST OF THE AREA WATERS...LARGE SWELLS WILL CREATE A
NUMBER OF ISSUES FOR THE NEXT FEW DAYS.
FOR TODAY...SEAS GRADUALLY BUILD TO AROUND 5FT. SCA GOES INTO EFFECT
AT 15Z TODAY AND WILL PROBABLY BE UP THROUGH AT LEAST MONDAY FOR ALL
ATLANTIC WATERS. GIVEN THE DIRECTION OF THE SWELL...WOULD EXPECT AT
LEAST 5FT SWELLS TO WORK INTO EASTERN LI SOUND. THIS WILL NOT LIKELY
TAKE PLACE UNTIL SAT...SO WILL WAIT ON ANY SCA THERE.
CURRENT HURRICANE WNA GUIDANCE KEEPS MAX SEAS IN THE 14 TO 17 FT
RANGE ON OPEN OCEAN WATERS BY SUNDAY MORNING. HAVE BEEN HIGHLIGHTING
VERY DANGEROUS CONDITIONS NEAR JETTYS AND INLETS.
/SUNDAY THROUGH WEDNESDAY/
SCA WINDS POSSIBLE SUNDAY AS BILL PULLS AWAY...ESPECIALLY EASTERN LI
SOUND AND AND350. SEAS REMAIN ABOVE 5FT PROBABLY INTO MONDAY.
THEREAFTER...HIGH PRESSURE BUILDS IN AND CONDITIONS IMPROVE THROUGH
THE MIDDLE PART OF NEXT WEEK.
&&
.HYDROLOGY...
URBAN AND SMALL STREAM FLASH FLOODING QUITE POSSIBLE TODAY NORTH AND
WEST OF NYC...CLOSER TO COLD FRONT AND AXIS OF HIGHER MOISTURE. FOR
TONIGHT THROUGH SATURDAY...TRAINING OF THUNDERSTORMS IN THIS MOIST
AND TROPICAL AIRMASS CAN BE EXPECTED WITH HIGHER LIKELIHOOD OF FLASH
FLOODING AND URBAN FLOODING...ESPECIALLY FROM NEW YORK CITY WEST.
&&
.TIDES/COASTAL FLOODING...
IT IS MUCH MORE LIKELY FOR THIS EVENINGS CYCLE...WITH TIDES 2 TO
4 TENTHS OF A FOOT HIGHER ASTRONOMICALLY...AND TIDAL PILING MORE
LIKELY. NEW YORK HARBOR...SOUTH SHORE BAYS OF
QUEENS/NASSAU/SUFFOLK WILL MOSTLY REACH MINOR BENCHMARKS. WITH
WAVE ACTION INCREASING THROUGH SUNDAY MORNING...COASTAL FLOOD
THREAT REMAINS DURING HIGH TIDE CYCLES.
EXPECT SURF HEIGHTS TO BE 2 TO 3 FT TODAY...AND BEGIN BUILDING
TONIGHT. BASED ON SWELL HEIGHT...4 TO 7 FT EXPECTED SATURDAY...AND 7
TO 10 FT WITH HIGHER SETS SATURDAY NIGHT AND SUNDAY. A HIGH SURF
ADVISORY MAY BE NEEDED AS EARLY AS LATE TONIGHT.
THE APPROACH OF LONGER PERIOD SWELLS ALSO EXPECTED TO PRODUCE
DANGEROUS RIP CURRENTS BEGINNING THIS AFTERNOON. A COASTAL FLOOD
STATEMENT HIGHLIGHTING THIS HAS BEEN ISSUED...AND WILL LIKELY
REMAIN IN EFFECT THROUGH THE WEEKEND.
IN ADDITION...THOSE WITH INTERESTS ALONG THE IMMEDIATE ATLANTIC
COAST SHOULD BE PREPARED FOR LOCAL WASH OVERS AND BEACH EROSION.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...NONE.
NY...HEAT ADVISORY UNTIL 8 PM EDT THIS EVENING FOR NYZ072>076.
COASTAL FLOOD ADVISORY FROM 8 PM THIS EVENING TO MIDNIGHT EDT
SATURDAY NIGHT FOR NYZ072-074>077-080-081.
HIGH SURF ADVISORY FROM 6 AM SATURDAY TO 6 PM EDT SUNDAY FOR
NYZ075>077-080-081.
NJ...COASTAL FLOOD ADVISORY FROM 8 PM THIS EVENING TO MIDNIGHT EDT
SATURDAY NIGHT FOR NJZ006.
MARINE...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL 6 AM EDT SUNDAY
FOR ANZ350-353-355.
&&
SYNOPSIS...PW
NEAR TERM...MPS
SHORT TERM...PW
LONG TERM...
AVIATION...BS
MARINE...BS
HYDROLOGY...PW
TIDES/COASTAL FLOODING...HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE NEW YORK NY 1240 PM EDT FRI AUG 21 2009 NYZ074-221000- RICHMOND (STATEN ISLAND)- 1240 PM EDT FRI AUG 21 2009 ...SEVERE THUNDERSTORM WATCH 727 IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO MIDNIGHT EDT SATURDAY NIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST NEW YORK. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. HEAT ADVISORY. COASTAL FLOOD ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. COASTAL FLOOD ADVISORY. THUNDERSTORMS MAY RESULT IN FLASH AND URBAN FLOODING SATURDAY. BASED ON THE LATEST FORECAST FROM TPC...HURRICANE BILL WILL TRACK WELL TO THE EAST OF MONTAUK POINT SUNDAY MORNING. LONG PERIOD SWELLS FROM THE SYSTEM MAY RESULT IN LOCAL IMPACTS AS VERY HIGH SURF...BEACH EROSION...AND STRONG RIP CURRENTS. MINOR COASTAL FLOODING WILL BE LIKELY OVER THE WEEKEND...AS HEAVY SURF WILL COMBINE WITH ASTRONOMICALLY HIGH TIDES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. NYZ075-076-221000- KINGS (BROOKLYN)-QUEENS- 1240 PM EDT FRI AUG 21 2009 ...SEVERE THUNDERSTORM WATCH 727 IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO MIDNIGHT EDT SATURDAY NIGHT... ...HIGH SURF ADVISORY IN EFFECT FROM 6 AM SATURDAY TO 6 PM EDT SUNDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST NEW YORK. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. HEAT ADVISORY. COASTAL FLOOD ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. COASTAL FLOOD ADVISORY. HIGH SURF ADVISORY. THUNDERSTORMS MAY RESULT IN FLASH AND URBAN FLOODING SATURDAY. BASED ON THE LATEST FORECAST FROM TPC...HURRICANE BILL WILL TRACK WELL TO THE EAST OF MONTAUK POINT SUNDAY MORNING. LONG PERIOD SWELLS FROM THE SYSTEM MAY RESULT IN LOCAL IMPACTS AS VERY HIGH SURF...BEACH EROSION...AND STRONG RIP CURRENTS. MINOR COASTAL FLOODING WILL BE LIKELY OVER THE WEEKEND...AS HEAVY SURF WILL COMBINE WITH ASTRONOMICALLY HIGH TIDES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. NYZ077-221000- NASSAU- 1240 PM EDT FRI AUG 21 2009 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO MIDNIGHT EDT SATURDAY NIGHT... ...HIGH SURF ADVISORY IN EFFECT FROM 6 AM SATURDAY TO 6 PM EDT SUNDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST NEW YORK. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. COASTAL FLOOD ADVISORY. ANY THUNDERSTORMS TODAY WILL PRODUCE HEAVY RAIN AND POSSIBLE STRONG GUSTY WINDS. STRONG RIP CURRENTS ARE EXPECTED. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. COASTAL FLOOD ADVISORY. HIGH SURF ADVISORY. THUNDERSTORMS MAY RESULT IN FLASH AND URBAN FLOODING SATURDAY. BASED ON THE LATEST FORECAST FROM TPC...HURRICANE BILL WILL TRACK WELL TO THE EAST OF MONTAUK POINT SUNDAY MORNING. LONG PERIOD SWELLS FROM THE SYSTEM MAY RESULT IN LOCAL IMPACTS AS VERY HIGH SURF...BEACH EROSION...AND STRONG RIP CURRENTS. MINOR COASTAL FLOODING WILL BE LIKELY OVER THE WEEKEND...AS HEAVY SURF WILL COMBINE WITH ASTRONOMICALLY HIGH TIDES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. NYZ072-221000- NEW YORK (MANHATTAN)- 1240 PM EDT FRI AUG 21 2009 ...SEVERE THUNDERSTORM WATCH 727 IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO MIDNIGHT EDT SATURDAY NIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST NEW YORK. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. HEAT ADVISORY. COASTAL FLOOD ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. COASTAL FLOOD ADVISORY. THUNDERSTORMS MAY RESULT IN FLASH AND URBAN FLOODING SATURDAY. BASED ON THE LATEST FORECAST FROM TPC...HURRICANE BILL WILL TRACK WELL TO THE EAST OF MONTAUK POINT SUNDAY MORNING. LONG PERIOD SWELLS FROM THE SYSTEM MAY RESULT IN LOCAL IMPACTS AS VERY HIGH SURF...BEACH EROSION...AND STRONG RIP CURRENTS. MINOR COASTAL FLOODING WILL BE LIKELY OVER THE WEEKEND...AS HEAVY SURF WILL COMBINE WITH ASTRONOMICALLY HIGH TIDES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. NYZ073-221000- BRONX- 1240 PM EDT FRI AUG 21 2009 ...SEVERE THUNDERSTORM WATCH 727 IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST NEW YORK. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. HEAT ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS MAY RESULT IN FLASH AND URBAN FLOODING SATURDAY. BASED ON THE LATEST FORECAST FROM TPC...HURRICANE BILL WILL TRACK WELL TO THE EAST OF MONTAUK POINT SUNDAY MORNING. LONG PERIOD SWELLS FROM THE SYSTEM MAY RESULT IN LOCAL IMPACTS AS VERY HIGH SURF...BEACH EROSION...AND STRONG RIP CURRENTS. MINOR COASTAL FLOODING WILL BE LIKELY OVER THE WEEKEND...AS HEAVY SURF WILL COMBINE WITH ASTRONOMICALLY HIGH TIDES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. NYZ080-081-221000- SOUTHWESTERN SUFFOLK-SOUTHEASTERN SUFFOLK- 1240 PM EDT FRI AUG 21 2009 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO MIDNIGHT EDT SATURDAY NIGHT... ...HIGH SURF ADVISORY IN EFFECT FROM 6 AM SATURDAY TO 6 PM EDT SUNDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST NEW YORK. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. COASTAL FLOOD ADVISORY. ANY THUNDERSTORMS TODAY WILL PRODUCE HEAVY RAIN AND POSSIBLE STRONG GUSTY WINDS. STRONG RIP CURRENTS ARE EXPECTED. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. COASTAL FLOOD ADVISORY. HIGH SURF ADVISORY. THUNDERSTORMS MAY RESULT IN FLASH AND URBAN FLOODING SATURDAY. BASED ON THE LATEST FORECAST FROM TPC...HURRICANE BILL WILL TRACK WELL TO THE EAST OF MONTAUK POINT SUNDAY MORNING. LONG PERIOD SWELLS FROM THE SYSTEM MAY RESULT IN LOCAL IMPACTS AS VERY HIGH SURF...BEACH EROSION...AND STRONG RIP CURRENTS. MINOR COASTAL FLOODING WILL BE LIKELY OVER THE WEEKEND...AS HEAVY SURF WILL COMBINE WITH ASTRONOMICALLY HIGH TIDES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. NJZ006-221000- HUDSON- 1240 PM EDT FRI AUG 21 2009 ...SEVERE THUNDERSTORM WATCH 727 IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO MIDNIGHT EDT SATURDAY NIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST NEW JERSEY. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. COASTAL FLOOD ADVISORY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. COASTAL FLOOD ADVISORY. THUNDERSTORMS MAY RESULT IN FLASH AND URBAN FLOODING SATURDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. NYZ078-079-221000- NORTHWESTERN SUFFOLK-NORTHEASTERN SUFFOLK- 1240 PM EDT FRI AUG 21 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST NEW YORK. .DAY ONE...THIS AFTERNOON AND TONIGHT. THUNDERSTORMS TODAY WILL PRODUCE HEAVY RAIN AND POSSIBLE STRONG GUSTY WINDS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS MAY RESULT IN FLASH AND URBAN FLOODING SATURDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. NJZ002>005-011-221000- WESTERN PASSAIC-BERGEN-EASTERN PASSAIC-ESSEX-UNION- 1240 PM EDT FRI AUG 21 2009 ...SEVERE THUNDERSTORM WATCH 727 IN EFFECT UNTIL 8 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST NEW JERSEY. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS MAY RESULT IN FLASH AND URBAN FLOODING SATURDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. CTZ005-009-NYZ067>071-221000- NORTHERN FAIRFIELD-SOUTHERN FAIRFIELD-ORANGE-PUTNAM-ROCKLAND- NORTHERN WESTCHESTER-SOUTHERN WESTCHESTER- 1240 PM EDT FRI AUG 21 2009 ...SEVERE THUNDERSTORM WATCH 726 IN EFFECT UNTIL 7 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN CONNECTICUT AND SOUTHEAST NEW YORK. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS MAY RESULT IN FLASH AND URBAN FLOODING SATURDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. CTZ006>008-010>012-221000- NORTHERN NEW HAVEN-NORTHERN MIDDLESEX-NORTHERN NEW LONDON- SOUTHERN NEW HAVEN-SOUTHERN MIDDLESEX-SOUTHERN NEW LONDON- 1240 PM EDT FRI AUG 21 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN CONNECTICUT. .DAY ONE...THIS AFTERNOON AND TONIGHT. THUNDERSTORMS TODAY WILL PRODUCE HEAVY RAIN AND POSSIBLE STRONG GUSTY WINDS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS MAY RESULT IN FLASH AND URBAN FLOODING SATURDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. ANZ338-221000- NEW YORK HARBOR- 1240 PM EDT FRI AUG 21 2009 ...SEVERE THUNDERSTORM WATCH 727 IN EFFECT UNTIL 8 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. LARGE SWELLS WILL DEVELOP TODAY. EXTREMELY ROUGH CONDITIONS ARE POSSIBLE AROUND JETTYS AND INLETS FACING THE OCEAN. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY HURRICANE BILL IS EXPECTED TO PASS WELL EAST OF THE AREA WATERS ON SUNDAY. LARGE SWELLS OF 12 TO 17 FT ARE EXPECTED ON OPEN OCEAN WATERS. EXTREMELY ROUGH CONDITIONS ARE POSSIBLE AROUND JETTYS AND INLETS FACING THE OCEAN. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. ANZ330-335-340-221000- LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY- LONG ISLAND SOUND WEST OF NEW HAVEN CT/PORT JEFFERSON NY- PECONIC AND GARDINERS BAYS- 1240 PM EDT FRI AUG 21 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY HAZARDOUS WEATHER NOT EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. ANZ345-350-353-355-221000- SOUTH SHORE BAYS FROM JONES INLET THROUGH SHINNECOCK BAY- MORICHES INLET NY TO MONTAUK POINT NY OUT 20 NM- FIRE ISLAND INLET NY TO MORICHES INLET NY OUT 20 NM- SANDY HOOK NJ TO FIRE ISLAND INLET NY OUT 20 NM- 1240 PM EDT FRI AUG 21 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS. .DAY ONE...THIS AFTERNOON AND TONIGHT. LARGE SWELLS WILL DEVELOP TODAY. EXTREMELY ROUGH CONDITIONS ARE POSSIBLE AROUND JETTYS AND INLETS FACING THE OCEAN. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY HURRICANE BILL IS EXPECTED TO PASS WELL EAST OF THE AREA WATERS ON SUNDAY. LARGE SWELLS OF 12 TO 17 FT ARE EXPECTED ON OPEN OCEAN WATERS. EXTREMELY ROUGH CONDITIONS ARE POSSIBLE AROUND JETTYS AND INLETS FACING THE OCEAN. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. && THIS HAZARDOUS WEATHER OUTLOOK PROVIDES A SUMMARY OF POTENTIAL WIDESPREAD HAZARDOUS WEATHER EVENTS THAT MAY REACH NWS WARNING CRITERIA. MOST LONG FUSED NWS WATCHES...WARNINGS AND ADVISORIES IN EFFECT ARE HIGHLIGHTED. PLEASE REFER TO THE LATEST NWS FORECASTS FOR WEATHER NOT MEETING NWS WARNING CRITERIA. MPS
The Albany radar (KENX), 136 km away, was scanning. The volume nearest the first event began at 18:43 UTC.
7 thunderstorm wind, 2 funnel cloud, 1 lightning. Local standard time, as filed.
New York Route 17A near Gibson Road was closed due to tree limbs and branches across the road.
There were numerous reports of trees and wires down throughout Middletown, including some which fell on cars and houses.
Lightning struck a utility pole in Scotchtown near the intersection of Route 211 and Ballard Road.
Trees and large limbs were reported down from Walkill to just west of the Montgomery County Airport.
Tree limbs were reported down at 7 Good Time Court in Goshen.
Dozens of trees were reported down throughout Yorktown Heights.
A funnel cloud was spotted over Yorktown Heights.
Numerous trees were reported down throughout town.
Several large branches were reported down on Sheryl Road in Mahopac.
A funnel cloud was reported near Linden Avenue in Middletown.
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, August 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: 195165, 195166, 195172, 195175, 195173, 195169, 195171, 195168, 195170, 195174.