Alert archive / New York / Flash Flood Warnings in 2004
Flash Flood Warning 21, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Jul 20, 2004, 4:52 PM EDT for Niagara County, New York. It was in force for 113 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
- Jul 20, 2004, 4:52 PM EDT (20:52 UTC)
- Expired
- Jul 20, 2004, 6:45 PM EDT
- In force
- 113 min
- Issued by
- NWS Buffalo, NY
- Area
- Counties, with a storm outline in the text
County Niagara County, NY
The radar
The Buffalo radar (KBUF), 30 km from the middle of the area, began a volume at 20:52 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, 8.9 hours before the alert went out and 33 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.
- Mixed-layer CAPE
- 145 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 1084 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KBUF 202052 FFWBUF NYC063-202245- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BUFFALO NY 452 PM EDT TUE JUL 20 2004 THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A * FLASH FLOOD WARNING FOR... NIAGARA COUNTY IN WESTERN NEW YORK * UNTIL 645 PM EDT * AT 444 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A THUNDERSTORM NEAR SANBORN...OR ABOUT 9 MILES NORTH OF NORTH TONAWANDA...MOVING EAST AT 10 MPH. * THE THUNDERSTORM PRODUCING FLASH FLOODING WILL BE NEAR... NEWFANE AT 515 PM EDT... LOCKPORT AT 525 PM EDT... GASPORT AT 550 PM EDT... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. 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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. LAT...LON 4327 7899 4310 7897 4312 7857 4332 7852 $$ TJP
2 follow-up statements
000 WGUS71 KBUF 202140 FFSBUF NYC063-202245- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 540 PM EDT TUE JUL 20 2004 ...A FLASH FLOOD WARNING CONTINUES UNTIL 645 PM EDT FOR NIAGARA COUNTY... AT 530 PM EDT...FLOODING FROM EARLIER STORMS WAS SUBSIDING...BUT WILL STILL BE A PROBLEM FOR AWHILE. THE THUNDERSTORM THAT PRODUCED THE FLASH FLOODING HAS WEAKENED AND MOVED SOUTH OUT OF THE COUNTY. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING. LAT...LON 4327 7899 4310 7897 4312 7857 4332 7852 $$ APB
000 WGUS71 KBUF 202240 FFSBUF NYC063-202255- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE BUFFALO NY 640 PM EDT TUE JUL 20 2004 ...THE FLASH FLOOD WARNING FOR NIAGARA COUNTY IS EXPIRING AT 645 PM... AT 630 PM EDT RADAR SHOWED THE RAIN HAD EXITED NIAGARA COUNTY. FLOODING FROM EARLIER STORMS WAS SUBSIDING...BUT MAY STILL BE A PROBLEM FOR AWHILE. LAT...LON 4327 7899 4310 7897 4312 7857 4332 7852 $$ APB
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 12:42 PM EDT | Severe Thunderstorm Warning | BUF | Orleans | 63 min |
| Jul 20, 1:30 PM EDT | Special Marine Warning | BUF | 2 hr | |
| Jul 20, 2:37 PM EDT | Severe Thunderstorm Warning | BUF | Monroe | 68 min |
| Jul 20, 2:49 PM EDT | Severe Thunderstorm Warning | BUF | Niagara | 56 min |
| Jul 20, 4:30 PM EDT | Severe Thunderstorm Warning | BUF | Niagara | 60 min |
Nearby
Flash Flood Warnings in New York, 2004Every flash flood warning in 2004
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.