Alert archive / New York / Flash Flood Warnings in 2005

Flash Flood Warning 15, NWS Buffalo, NY

July 17, 2005Lewis County, Oswego County, New York

NWS Buffalo, NY issued this flash flood warning at Jul 17, 2005, 10:09 PM EDT for Lewis County, Oswego County, New York. It was in force for 3 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: Jul 17, 2005, 10:09 PM EDT (02:09 UTC)
Expired: Jul 18, 2005, 1:00 AM EDT
In force: 3 hr
Issued by: NWS Buffalo, NY
Area: Counties, with a storm outline in the text

Counties Lewis County, NY, Oswego County, NY

The radar

The Ft Drum radar (KTYX), 29 km from the middle of the area, began a volume at 02:09 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
Jul 17, 11:25 PM EDT	FLASH FLOOD	Constableville, NY	LOCAL ROADS CLOSED DUE TO FLOODING.

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 00:00Z, 2.2 hours before the alert went out and 186 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: 1373 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 678 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 79 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.

000 
WGUS51 KBUF 180212
FFWBUF
NYC049-075-180500-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1009 PM EDT SUN JUL 17 2005

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 100 AM EDT

* AT 1005 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A CLUSTER OF THUNDERSTORMS WITH VERY HEAVY RAIN OVER CENTRAL       
  OSWEGO COUNTY. ONE TO TWO INCHES OF RAIN HAS ALREADY FALLEN IN AN  
  HOUR...AND ADDITIONAL RAINFALL OF UP TO TWO INCHES IS POSSIBLE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE 
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS 
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 4328 7640 4354 7530 4372 7541 4378 7561

$$

MCLAUGHLIN

2 follow-up statements

000 
WGUS71 KBUF 180325
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1120 PM EDT SUN JUL 17 2005

NYC049-075-180500-
LEWIS NY-OSWEGO NY-
1120 PM EDT SUN JUL 17 2005

...A FLASH FLOOD WARNING CONTINUES UNTIL 100 AM EDT FOR OSWEGO AND
LEWIS COUNTIES...

AT 1119 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
HEAVY THUNDERSTORMS OVER EASTERN OSWEGO COUNTY MOVING INTO WESTERN 
LEWIS COUNTY. THEY WILL CONTINUE TO MOVE EAST AT 25 MPH.

RADAR RAINFALL ESTIMATES HAVE BEEN TWO TO THREE INCHES IN LESS THAN 
2 HOURS ACROSS MUCH OF OSWEGO COUNTY...ENOUGH TO CAUSE FLOODING WITH 
ADDITIONAL RAINFALL THROUGH MIDNIGHT.

ACROSS LEWIS COUNTY...THE SOUTHERN SECTIONS RECEIVED UP TO TWO 
INCHES OF RAIN EARLIER THIS EVENING...AND ANOTHER ONE TO TWO INCHES 
IS LIKELY AS THE THUNDERSTORMS CROSS THROUGH 1 AM. THIS ALSO MAY BE 
ENOUGH TO CAUSE FLASH FLOODING...ESPECIALLY IN HILLY AREAS SOUTH OF 
THE TUG HILL AND UPPER BLACK RIVER VALLEY.

REMEMBER...EXCESSIVE RUNOFF FROM HEAVY RAINFALL CAN CAUSE FLOODING 
OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND 
ALONG THE BANKS OF CREEKS AND STREAMS. BE ESPECIALLY VIGILANT IN 
DARKNESS.

LAT...LON 4328 7640 4354 7530 4372 7541 4378 7561

$$

MCLAUGHLIN

000 
WGUS71 KBUF 180502
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
101 AM EDT MON JUL 18 2005

NYC049-075-180511-
LEWIS NY-OSWEGO NY-
101 AM EDT MON JUL 18 2005

...THE FLASH FLOOD WARNING FOR OSWEGO AND LEWIS COUNTIES EXPIRED AT
100 AM EDT...

AT 100 AM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT WHILE SOME 
RAIN REMAINED OVER EASTERN LEWIS COUNTY...THE HEAVY THUNDERSTORMS 
THAT PROMPTED THE WARNING HAD MOVED EAST OF THE AREA...THUS THE 
FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE.

PONDING OF LOW LYING AND POOR DRAINAGE AREAS WILL BE POSSIBLE FOR
AWHILE UNTIL THE WATER HAS TIME TO RUN OFF.

LAT...LON 4328 7640 4354 7530 4372 7541 4378 7561

$$

LEVAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 2:14 PM EDT	Flash Flood Warning	BUF	Erie	3 hr

Nearby

Flash Flood Warnings in New York, 2005 Every flash flood warning in 2005

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.