Alert archive / New York / Flash Flood Warnings in 2011

Flash Flood Warning 8, NWS Albany, NY

May 20, 20114 counties in New York

NWS Albany, NY issued this flash flood warning at May 20, 2011, 4:03 PM EDT for 4 counties in New York. It was in force for 6 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 20, 2011, 4:03 PM EDT (20:03 UTC)
Expired: May 20, 2011, 9:33 PM EDT
In force: 6 hr
Issued by: NWS Albany, NY
Area: Storm-based polygon
Flood severity: None

Counties Fulton County, NY, Hamilton County, NY, Herkimer County, NY, Montgomery County, NY

The radar

The Ft Drum radar (KTYX), 80 km from the middle of the area, began a volume at 20:04 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.

What was reported inside it

Time	Report	Where	Remark
May 20, 4:15 PM EDT	FLASH FLOOD	2 Nw Cold Brook, NY	DAMAGE TO ROAD FROM FLOODING AT THE INTERSECTION OF RUSSIA RD AND LANNING RD

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 8.1 hours before the alert went out and 111 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: 135 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 654 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

454 
WGUS51 KALY 202003
FFWALY
NYC035-041-043-057-210200-
/O.NEW.KALY.FF.W.0008.110520T2003Z-110521T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ALBANY NY
403 PM EDT FRI MAY 20 2011

THE NATIONAL WEATHER SERVICE IN ALBANY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN FULTON COUNTY IN EASTERN NEW YORK...
  SOUTHWESTERN HAMILTON COUNTY IN EASTERN NEW YORK...
  HERKIMER COUNTY IN EASTERN NEW YORK...
  THIS INCLUDES THE CITIES OF...OLD FORGE...LITTLE FALLS...ILION...
  HERKIMER...
  EXTREME NORTHWESTERN MONTGOMERY COUNTY IN EASTERN NEW YORK...

* UNTIL 1000 PM EDT

* AT 357 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN WHICH WILL LIKELY 
  RESULT IN FLASH FLOODING OVER THE WARNED AREA. IN ADDITION...
  FLOODING HAS BEEN REPORTED ALONG MILL CREEK IN RUSSIA. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NICKS LAKE
  CAMPGROUND...LIMEKILN LAKE CAMPGROUND...INLET...EIGHTH LAKE
  CAMPGROUND...ALGER ISLAND PUBLIC CAMPGROUND...OHIO...NORTHWOOD...
  MCKEEVER AND EAGLE BAY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 4 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY EMAIL AT
ALB.STORMREPORT@NOAA.GOV.

&&

LAT...LON 4322 7508 4326 7516 4330 7515 4334 7509
      4364 7512 4373 7509 4379 7478 4380 7447
      4355 7462 4311 7471 4289 7479 4288 7483
      4289 7487 4285 7490 4292 7520 4306 7522

$$

1 follow-up statement

688 
WGUS71 KALY 210133
FFSALY

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
933 PM EDT FRI MAY 20 2011

NYC035-041-043-057-210143-
/O.CAN.KALY.FF.W.0008.000000T0000Z-110521T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HAMILTON NY-MONTGOMERY NY-FULTON NY-HERKIMER NY-
933 PM EDT FRI MAY 20 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR HERKIMER...
NORTHWESTERN FULTON...EXTREME NORTHWESTERN MONTGOMERY AND
SOUTHWESTERN HAMILTON COUNTIES...

THE THUNDERSTORMS WHICH PRODUCED VERY HEAVY RAIN ACROSS PARTS OF THE 
WARNED AREA HAVE MOVED OUT OF THE REGION. THEREFORE THE FLASH FLOOD 
WARNING HAS BEEN CANCELLED.

PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY EMAIL AT
ALB.STORMREPORT@NOAA.GOV.

LAT...LON 4322 7508 4326 7516 4330 7515 4334 7509
      4364 7512 4373 7509 4379 7478 4380 7447
      4355 7462 4311 7471 4289 7479 4288 7483
      4289 7487 4285 7490 4292 7520 4306 7522

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 8:47 PM EDT	Flash Flood Warning	ALY	Columbia, Greene	6 hr
May 19, 9:52 PM EDT	River Flood Warning	ALY	Oneida	11 hr
May 20, 1:16 PM EDT	Areal Flood Advisory	ALY	Columbia, Dutchess	60 min
May 20, 2:18 PM EDT	Flash Flood Warning	ALY	Columbia, Dutchess, Greene, Ulster	6 hr
May 20, 2:35 PM EDT	Flash Flood Warning	ALY	Rensselaer, Saratoga, Warren, Washington	2 hr
May 20, 2:47 PM EDT	Severe Thunderstorm Warning	ALY	Columbia, Greene	43 min
May 20, 3:16 PM EDT	Severe Thunderstorm Warning	ALY	Saratoga, Warren, Washington	44 min
May 20, 3:46 PM EDT	Flash Flood Warning	ALY	Albany, Columbia, Greene, Rensselaer, Saratoga, Schenectady	5 hr
May 20, 5:02 PM EDT	Special Weather Statement	ALY	Putnam	28 min
May 20, 5:23 PM EDT	Flash Flood Warning	ALY	Dutchess, Ulster	3 hr
May 20, 5:39 PM EDT	Special Weather Statement	ALY	Washington	66 min
May 20, 6:59 PM EDT	Flash Flood Warning	ALY	Rensselaer, Saratoga, Schenectady, Washington	3 hr

Nearby

Flash Flood Warnings in New York, 2011 Every flash flood warning in 2011

Sources

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