Alert archive / New York / Flash Flood Watches in 2009

Flash Flood Watch 9, NWS New York, NY

August 28, 20096 counties in New York; 4 counties in Connecticut; Hudson County, Passaic County, New Jersey

NWS New York, NY issued this flash flood watch at Aug 28, 2009, 4:03 PM EDT for 6 counties in New York; 4 counties in Connecticut; Hudson County, Passaic County, New Jersey. It was in force for 23 hr.

The area

The counties it named.

The facts

Issued: Aug 28, 2009, 4:03 PM EDT (20:03 UTC)
Expired: Aug 29, 2009, 2:33 PM EDT
In force: 23 hr
Issued by: NWS New York, NY
Flood severity: None

Counties Greater Bridgeport Planning Region, CT, Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT, Southeastern Connecticut Planning Region, CT, Hudson County, NJ, Passaic County, NJ, Bronx County, NY, Kings County, NY, New York County, NY, Richmond County, NY, Suffolk County, NY, Westchester County, NY

The radar

The Brookhaven radar (KOKX), 55 km from the middle of the area, began a volume at 20:03 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.1 hours before the alert went out and 55 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1046 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch went out, 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 this flash flood watch went out at Aug 28, 2:25 PM EDT, 1 hour 38 minutes earlier.

Area forecast discussion, Aug 28, 2:25 PM EDT, 1 hour 38 minutes before

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Hazardous weather outlook, Aug 28, 5:29 AM EDT, 10 hours 34 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NEW YORK NY
529 AM EDT FRI AUG 28 2009

ANZ338-CTZ005>012-NJZ002>006-011-NYZ067>081-290930-
NEW YORK HARBOR-NORTHERN FAIRFIELD-NORTHERN NEW HAVEN-
NORTHERN MIDDLESEX-NORTHERN NEW LONDON-SOUTHERN FAIRFIELD-
SOUTHERN NEW HAVEN-SOUTHERN MIDDLESEX-SOUTHERN NEW LONDON-
WESTERN PASSAIC-BERGEN-EASTERN PASSAIC-ESSEX-HUDSON-UNION-ORANGE-
PUTNAM-ROCKLAND-NORTHERN WESTCHESTER-SOUTHERN WESTCHESTER-
NEW YORK (MANHATTAN)-BRONX-RICHMOND (STATEN ISLAND)-KINGS (BROOKLYN)-
QUEENS-NASSAU-NORTHWESTERN SUFFOLK-NORTHEASTERN SUFFOLK-
SOUTHWESTERN SUFFOLK-SOUTHEASTERN SUFFOLK-
529 AM EDT FRI AUG 28 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL
WATERS...SOUTHERN CONNECTICUT...NORTHEAST NEW JERSEY AND SOUTHEAST
NEW YORK.

.DAY ONE...TODAY AND TONIGHT.

LOCALLY HEAVY RAINFALL IS POSSIBLE TONIGHT...POSSIBLY CAUSING
URBAN AND SMALL STREAM FLOODING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

LOCALLY HEAVY RAINFALL IS POSSIBLE SATURDAY IN ASSOCIATION WITH
TROPICAL STORM DANNY...POSSIBLY CAUSING FLASH FLOODING. IN
ADDITION ATLANTIC COASTAL AREAS COULD EXPERIENCE MINOR BEACH
EROSION...HIGH SURF...AND POSSIBLY OVERWASH AS WELL. A WESTWARD
SHIFT IN THE TRACK OF DANNY WOULD RESULT IN A MORE SIGNIFICANT
IMPACT...ESPECIALLY OVER EASTERN PORTIONS OF THE TRI-STATE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

&&

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.

ANZ330-335-340-345-350-353-355-290930-
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-
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-
529 AM EDT FRI AUG 28 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ON ITS CURRENT FORECAST TRACK...TROPICAL STORM DANNY IS NOT
EXPECTED TO CAUSE NO MORE THAN SMALL CRAFT ADVISORY CONDITIONS.
HOWEVER...IF THE TRACK SHIFTS WESTWARD A MORE WIDESPREAD IMPACT
MAYBE FELT...ESPECIALLY OVER THE WATERS AROUND EASTERN LONG ISLAND
AND SOUTHEAST CONNECTICUT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

&&

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.

MALOIT

The office that day

Everything else NWS New York, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 28, 9:08 AM EDT	Areal Flood Advisory	OKX	Bronx, Kings, New York, Queens, Richmond	112 min
Aug 28, 11:37 AM EDT	Areal Flood Advisory	OKX	Kings, Queens, Richmond	113 min
Aug 28, 1:14 PM EDT	Flash Flood Warning	OKX	Kings, Queens	76 min
Aug 28, 1:21 PM EDT	Areal Flood Advisory	OKX	Nassau	114 min
Aug 28, 4:30 PM EDT	High Surf Advisory	OKX	Kings, Suffolk	53 hr
Aug 28, 5:32 PM EDT	Gale Watch	OKX		11 hr
Aug 28, 9:13 AM EDT	Areal Flood Advisory	OKX	Bergen, Essex, Hudson, Passaic, Union	2 hr
Aug 28, 11:39 AM EDT	Areal Flood Advisory	OKX	Essex, Hudson, Union	2 hr

Nearby

Flash Flood Watches in New York, 2009 Flash Flood Watches in Connecticut, 2009 Flash Flood Watches in New Jersey, 2009 Every flash flood watch in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.