Low pressure tracked from the Ohio Valley through southern New England and into the Gulf of Maine between March 21 and March 24, 2010. Heavy rainfall associated with this system caused isolated small stream flooding in Rockland county.
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.
Low pressure tracked from the Ohio Valley through southern New England and into the Gulf of Maine between March 21 and March 24, 2010. Heavy rainfall associated with this system caused isolated small stream flooding in Rockland county.
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 Mar 22, 10:29 PM EST, 2 hours 31 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NEW YORK NY
1129 PM EDT MON MAR 22 2010
.SYNOPSIS...
LOW PRESSURE ACROSS THE MID ATLANTIC STATES WILL MOVE TOWARD THE
REGION...THEN PASS OVER THE LOCAL AREA TUESDAY. THE LOW MOVES
NORTHEAST ACROSS SOUTHERN NEW ENGLAND THROUGH MID WEEK. A COLD
FRONT WILL CROSS THE REGION THURSDAY NIGHT...FOLLOWED BY HIGH
PRESSURE FRIDAY AND INTO THE WEEKEND.
&&
.NEAR TERM /THROUGH TUESDAY/...
LIGHT TO MODERATE RAIN...WITH EMBEDDED THUNDERSTORMS CONTINUES
THROUGH LATE TONIGHT...AFTER MIDNIGHT. LOCALLY HEAVY RAIN IS
POSSIBLE. BASED ON THE LATEST 12Z GFS/NAM12 WILL KEEP THE HEAVIER
RAINFALL AXIS ACROSS NORTHEAST NEW JERSEY AND THE LOWER HUDSON
RIVER VALLEY TONIGHT...WHICH IS IN LINE WITH THE PREVIOUS
FORECAST. RAIN TAPERS OFF WELL AFTER MIDNIGHT...TOWARD DAYBREAK
TUESDAY...AS LOW LEVEL JET MOVES EAST OF THE AREA.
FFG GENERALLY LESS THAN 1.5 INCHES FOR 6 HOURS ACROSS NE NEW
JERSEY AND THE LOWER HUDSON RIVER VALLEY...WILL KEEP THE FFA WHERE
IT IS. FLOODING ACROSS THE FAA AREA IS MAINLY DUE TO SMALL AND
MAIN STREAM RIVER FLOODING...ELSEWHERE MAINLY MINOR URBAN FLOODING
EXPECTED.
AS THE STORM DEPARTS A NORTHWEST FLOW WILL DEVELOP ON THE
BACKSIDE.
&&
.SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/...
SOME LIGHT RAIN POSSIBLE INTO EARLY TUESDAY NIGHT AS UPPER LOW
MOVES JUST SOUTH OF THE AREA...THEN TO THE EAST LATE TUESDAY
NIGHT. HEIGHTS RISING TUESDAY NIGHT INTO WEDNESDAY WITH RATHER
WEAK AND FLAT RIDGE ACROSS THE AREA. WEDNESDAY AND THURSDAY WILL
BE DRY.
TEMPERATURES...MAINLY ABOVE NORMAL VALUES EXPECTED. WEDNESDAY AND
THURSDAY HIGHS GENERALLY IN THE MID 50S TO NEAR 60.
&&
.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
WEAK LOW PRES ALONG A STRONG COLD FRONT APPROACHES LATE THU
NIGHT...TOUCHING OFF SOME SHOWERS THROUGH FRI MORNING AS IT PASSES
THROUGH THE REGION. BEHIND THIS FRONT IS AN ARCTIC AIRMASS WITH
UNSEASONABLY COLD TEMPERATURES. ALTHOUGH PRECIP IN MOST AREAS WILL
BE IN THE FORM OF RAIN SHOWERS...A RAIN/SNOW MIX IS POSSIBLE ACROSS
THE INTERIOR. THINK TEMPS WILL BE TOO WARM FOR ACCUMULATING SNOW.
FRONT CLEARS THE REGION LATE FRI...AND SKIES CLEAR OUT AS NORTHERLY
WINDS USHER THE COLD DRY AIRMASS INTO THE REGION. CLEAR AND DRY
THROUGH THE WEEKEND AS COLD HIGH PRES BUILDS THROUGH THE REGION.
LOWS FRI NIGHT WILL DROP INTO THE MID AND UPPER 20S...BUT AROUND 30
IN/AROUND NYC AND IN THE LOWER 20S IN FAVORED RADIATIONAL COOLING
AREAS. HIGHS ON SAT WILL ONLY REACH THE MID TO UPPER 40S.WITH HIGH
PRES MOVING OFFSHORE SAT NIGHT...SOUTHERLY WINDS WILL ALLOW TEMPS TO
WARM BACK INTO THE 50S FOR THE START OF THE NEW WEEK.
ANOTHER STRONG COLD FRONT WILL APPROACH THE REGION FOR THE START OF
THE NEW WEEK. BOTH THE GFS AND THE ECMWF ARE INDICATING THE
POTENTIAL FOR A COASTAL LOW TO DEVELOP OFF THE MID-ATLANTIC COAST
AND TO PUSH THROUGH THE LOCAL AREA MON THROUGH TUE. THIS WILL BEAR
FURTHER MONITORING.
&&
.AVIATION /03Z TUESDAY THROUGH SATURDAY/...
IRF CONDITIONS INTO EARLY TUESDAY MORNING AS SOUTHEASTERLY FLOW
REMAINS AHEAD OF A WARM FRONT OFF THE MID ATLANTIC COAST. ELEVATED
CONVECTION HAS BEEN EMBEDDED IN THE RAIN ACROSS NEW JERSEY AND
JUST OF THE NEW JERSEY COAST...SO WILL CONTINUE WITH VCTS AND CB
UNTIL ABOUT 07Z.
EASTERLY TO SOUTHEASTERLY WINDS BECOME LIGHT AND VARIABLE ABOUT
09Z AS SURFACE LOW MOVES OVER THE REGION...THEN WINS SHIFT TO THE
WEST TO SOUTHWEST TUESDAY MORNING..12Z TO 15Z AS LOW MOVES EAST OF
THE TERMINALS. WIND SHIFT WILL BE DEPENDENT ON HOW QUICKLY THE LOW
MOVES EAST OF THE AREA. CONDITIONS IMPROVE TO MVFR WITH THE WIND SHIFT.
OUTLOOK 00Z WEDNESDAY THROUGH SATURDAY...
TUESDAY NIGHT...MVFR CEILINGS.
WEDNESDAY...VFR. GUSTY WEST TO NORTHWEST WIND.
THURSDAY...VFR.
FRIDAY THROUGH SATURDAY...VFR.
&&
.MARINE...
OVERNIGHT...WINDS INCREASE OUT OF SOUTHEAST AS LOW PRESSURE MOVES
INTO THE NORTHEAST WEST OF THE LOCAL REGION. THIS WILL LEAD TO
INCREASED SEAS ESPECIALLY ACROSS THE OCEAN WITH INCREASING FETCH
EVENTUALLY GETTING TO SCA THRESHOLD...5 FEET...BY LATE TONIGHT.
WAVEWATCH GUIDANCE FOLLOWED AS THIS SEEMS TO CAPTURE WHERE THE
HIGHEST SEAS ARE IN ASSOCIATION WITH THE DEVELOPING LOW PRESSURE
THIS AFTERNOON. HOWEVER...GUIDANCE WAS LOWERED A LITTLE IN THE
SHORT TERM THROUGH EARLY EVENING SINCE WAVE FORECAST WAS RUNNING
SLIGHTLY HIGH FOR THAT PERIOD.
THE HIGHER SEAS WILL CONTINUE THROUGH TUESDAY WITH PRIMARY SOUTHERLY
SWELL. WINDS WILL SHIFT TO SOUTHWEST AND INCREASE BUT WILL REMAIN
BELOW 25 KT AS THE LOW PASSES JUST TO OUR NORTH AND EVENTUALLY
EASTERN NEW ENGLAND BY TUESDAY NIGHT. THE LOW WILL DEEPEN OVER THE
GULF OF MAINE LATER TUESDAY NIGHT...INCREASING THE PRESSURE GRADIENT
AND AT THAT POINT...WESTERLY WINDS WILL INCREASE AND GUSTS WILL
REACH 25-30 KT. GUSTS CONTINUE THROUGH WEDNESDAY WITH HIGH SEAS
CONTINUING. HOWEVER...SEAS WILL THEN BE ON A DOWNWARD TREND FROM THE
AFTERNOON THROUGH NIGHT TIME ON WEDNESDAY WITH THE OFFSHORE FLOW
STARTING TO PUSH THE HIGHER SEAS BACK OUT.
CONDITIONS EXPECTED TO BE BELOW SCA ON THURSDAY WITH HIGH PRESSURE
BUILDING IN FROM WEST.
THU NIGHT THROUGH MON...
COLD FRONT WITH WEAK LOW PRES WILL PASS THROUGH THE WATERS THU NIGHT
THROUGH FRI WITH THE POTENTIAL FOR 25-30 KT WIND GUSTS. TRANQUIL
CONDITIONS THEN EXPECTED ON THE WATERS FOR THE WEEKEND AS HIGH PRES
BUILDS INTO THE NORTHEAST. WINDS/WAVES MAY APPROACH SCA CRITERIA
EARLY IN THE NEW WEEK AS ANOTHER STORM SYSTEM IMPACTS THE REGION.
&&
.HYDROLOGY...
CURRENTLY EXPECTING 1.0 TO 2.0 INCHES OF RAIN...WITH LOCALLY
HIGHER AMOUNTS ACROSS THE TRI-STATE TONIGHT THROUGH TUESDAY NIGHT.
THE MAIN BULK OF THE RAIN EXPECTED TO FALL TONIGHT. WITH RIVER
LEVELS OVER NORTHEAST NJ ALREADY RUNNING RELATIVELY HIGH AND 6
HOUR FLASH FLOOD GUIDANCE LESS THAN 1.5 INCHES...WILL MAINTAIN THE
FLOOD WATCH FOR NORTHEAST NEW JERSEY AND THE LOWER HUDSON RIVER
VALLEY.
FOR NEW YORK CITY/LONG ISLAND AT THIS TIME...MAINLY MINOR URBAN FLOODING
IS POSSIBLE.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...NONE.
NY...FLOOD WATCH THROUGH TUESDAY AFTERNOON FOR NYZ067-069.
NJ...FLOOD WATCH THROUGH TUESDAY AFTERNOON FOR NJZ002>006-011.
MARINE...SMALL CRAFT ADVISORY UNTIL 6 AM EDT WEDNESDAY FOR ANZ350-353-
355.
&&HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE NEW YORK NY 352 PM EDT MON MAR 22 2010 CTZ005>012-NYZ068-070>081-231100- NORTHERN FAIRFIELD-NORTHERN NEW HAVEN-NORTHERN MIDDLESEX- NORTHERN NEW LONDON-SOUTHERN FAIRFIELD-SOUTHERN NEW HAVEN- SOUTHERN MIDDLESEX-SOUTHERN NEW LONDON-PUTNAM-NORTHERN WESTCHESTER- SOUTHERN WESTCHESTER-NEW YORK (MANHATTAN)-BRONX- RICHMOND (STATEN ISLAND)-KINGS (BROOKLYN)-QUEENS-NASSAU- NORTHWESTERN SUFFOLK-NORTHEASTERN SUFFOLK-SOUTHWESTERN SUFFOLK- SOUTHEASTERN SUFFOLK- 352 PM EDT MON MAR 22 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN CONNECTICUT AND SOUTHEAST NEW YORK. .DAY ONE...THIS AFTERNOON AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME THAT WOULD MEET NATIONAL WEATHER SERVICE WARNING CRITERIA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. && 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>006-011-NYZ067-069-231100- WESTERN PASSAIC-BERGEN-EASTERN PASSAIC-ESSEX-HUDSON-UNION-ORANGE- ROCKLAND- 352 PM EDT MON MAR 22 2010 ...FLOOD WATCH IN EFFECT THROUGH TUESDAY AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST NEW JERSEY 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. FLOOD WATCH. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. FLOOD WATCH. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. && 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. ANZ330-335-338-340-345-350-353-355-231100- LONG ISLAND SOUND EAST OF NEW HAVEN CT/PORT JEFFERSON NY- LONG ISLAND SOUND WEST OF NEW HAVEN CT/PORT JEFFERSON NY- NEW YORK HARBOR-PECONIC AND GARDINERS BAYS- 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- 352 PM EDT MON MAR 22 2010 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...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME THAT WOULD MEET NATIONAL WEATHER SERVICE WARNING CRITERIA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. && 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.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
The Mahwah River at Suffern exceeded bankfull and crested at 4.88 feet.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2010Every state in 2010This day in weather historyWarnings in New York, March 2010
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: 220971.