Alert archive / New York / Flash Flood Warnings in 2011
Flash Flood Warning 20, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Sep 1, 2011, 6:56 AM EDT for Cattaraugus County, New York. It was in force for 102 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
- Sep 1, 2011, 6:56 AM EDT (10:56 UTC)
- Expired
- Sep 1, 2011, 8:38 AM EDT
- In force
- 102 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
County Cattaraugus County, NY
The radar
The Buffalo radar (KBUF), 102 km from the middle of the area, began a volume at 10:57 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 00:00Z, 10.9 hours before the alert went out and 99 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
- 1 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 1700 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
518
WGUS51 KBUF 011056
FFWBUF
NYC009-011400-
/O.NEW.KBUF.FF.W.0020.110901T1056Z-110901T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
656 AM EDT THU SEP 1 2011
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN CATTARAUGUS COUNTY IN WESTERN NEW YORK...
THIS INCLUDES THE CITY OF OLEAN...
* UNTIL 1000 AM EDT
* AT 652 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4207 7869 4219 7857 4207 7830 4200 7831
4199 7831 4199 7848
$$
APFFEL2 follow-up statements
058
WGUS71 KBUF 011116
FFSBUF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
716 AM EDT THU SEP 1 2011
NYC009-011400-
/O.CON.KBUF.FF.W.0020.000000T0000Z-110901T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATTARAUGUS NY-
716 AM EDT THU SEP 1 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 AM EDT FOR
SOUTHEASTERN CATTARAUGUS COUNTY...
AT 710 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT UP TO TWO AND A HALF INCHES OF RAIN HAS FALLEN ACROSS
CATTARAUGUS COUNTY IN THE VICINITY OF OLEAN...ALLEGANY...AND
PORTVILLE. ALTHOUGH THE HEAVIEST RAIN HAS ENDED...CREEKS AND STREAMS
MAY RISE RAPIDLY...CAUSING WASHOUTS IN SOME ROADWAYS. RURAL ROADWAYS
IN AREAS OF TERRAIN TEND TO BE ESPECIALLY VULNERABLE TO FLASH
FLOODING. AREA CREEKS IN AND AROUND OLEAN MAY ALSO RISE RAPIDLY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
&&
LAT...LON 4207 7869 4219 7857 4207 7830 4200 7831
4199 7831 4199 7848
$$
APFFEL406
WGUS71 KBUF 011238
FFSBUF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
838 AM EDT THU SEP 1 2011
NYC009-011247-
/O.CAN.KBUF.FF.W.0020.000000T0000Z-110901T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATTARAUGUS NY-
838 AM EDT THU SEP 1 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHEASTERN
CATTARAUGUS COUNTY...
AT 837 AM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE
THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED THE AREA. LOCAL
LAW ENFORCEMENT REPORTS NO FLOODING IN SOUTHEAST CATTARAUGUS
COUNTY...THUS THE FLOOD WARNING HAS BEEN CANCELLED.
LAT...LON 4207 7869 4219 7857 4207 7830 4200 7831
4199 7831 4199 7848
$$
HITCHCOCKThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 4:33 AM EDT | Special Weather Statement | BUF | Erie | 57 min |
| Sep 1, 4:35 AM EDT | Special Marine Warning | BUF | 40 min | |
| Sep 1, 5:30 AM EDT | Areal Flood Advisory | BUF | Cattaraugus, Chautauqua | 3 hr |
Nearby
Flash Flood Warnings in New York, 2011Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.