Alert archive / New York / Flash Flood Warnings in 2012

Flash Flood Warning 7, NWS Buffalo, NY

August 14, 2012Oswego County, New York

NWS Buffalo, NY issued this flash flood warning at Aug 14, 2012, 6:04 PM EDT for Oswego County, New York. It was in force for 70 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 14, 2012, 6:04 PM EDT (22:04 UTC)
Expired: Aug 14, 2012, 7:14 PM EDT
In force: 70 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Flood severity: None

County Oswego County, NY

The radar

The Ft Drum radar (KTYX), 79 km from the middle of the area, began a volume at 22:05 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 10.1 hours before the alert went out and 185 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: 9 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1174 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 60 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

112 
WGUS51 KBUF 142204
FFWBUF
NYC075-150100-
/O.NEW.KBUF.FF.W.0007.120814T2204Z-120815T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
604 PM EDT TUE AUG 14 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WEST CENTRAL OSWEGO COUNTY IN CENTRAL NEW YORK...

* UNTIL 900 PM EDT

* AT 556 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A NEARLY STATIONARY THUNDERSTORM PRODUCING TORRENTIAL RAINFALL     
  OVER A SMALL PORTION OF WESTERN OSWEGO COUNTY BETWEEN HANNIBAL AND 
  MINETTO. RADAR ESTIMATES THAT 2 TO 3 INCHES OF RAIN HAS FALLEN.    
  ADDITIONAL RAINFALL AMOUNTS OF AROUND AN INCH ARE LIKELY AS        
  ANOTHER AREA OF THUNDERSTORMS CROSS WESTERN OSWEGO COUNTY.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL RESULT IN FLASH FLOODING 
ALONG SMALL CREEKS...INCLUDING NINE MILE CREEK AND ITS TRIBUTARIES. 
ROAD FLOODING IS ALSO POSSIBLE...INCLUDING ROUTE 104 FROM HANNIBAL 
TO SOUTHWEST OSWEGO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

&&

LAT...LON 4337 7635 4329 7660 4329 7661 4340 7661
      4346 7645

$$

HITCHCOCK

1 follow-up statement

529 
WGUS71 KBUF 142314
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
714 PM EDT TUE AUG 14 2012

NYC075-142324-
/O.CAN.KBUF.FF.W.0007.000000T0000Z-120815T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
OSWEGO NY-
714 PM EDT TUE AUG 14 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR WEST CENTRAL OSWEGO
COUNTY...

AT 714 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE 
THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED THE AREA. LOCAL 
LAW ENFORCEMENT REPORTS NO SIGNIFICANT FLOODING FROM THE HEAVY 
RAINFALL...THEREFORE THE FLOOD WARNING HAS BEEN CANCELLED.

LAT...LON 4337 7635 4329 7660 4329 7661 4340 7661
      4346 7645

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 2:12 PM EDT	Special Weather Statement	BUF	Chautauqua	33 min
Aug 14, 3:29 PM EDT	Special Weather Statement	BUF	Monroe	46 min
Aug 14, 3:30 PM EDT	Special Weather Statement	BUF	Monroe	45 min
Aug 14, 3:51 PM EDT	Special Weather Statement	BUF	Allegany	39 min
Aug 14, 4:27 PM EDT	Areal Flood Advisory	BUF	Monroe, Wayne	2 hr
Aug 14, 4:37 PM EDT	Special Weather Statement	BUF	Allegany	38 min
Aug 14, 7:22 PM EDT	Special Weather Statement	BUF	Oswego	53 min
Aug 14, 7:53 PM EDT	Special Weather Statement	BUF	Oswego	22 min

Nearby

Flash Flood Warnings in New York, 2012 Every flash flood warning in 2012

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.