Alert archive / New York / Flash Flood Watches in 2011
Flash Flood Watch 1, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood watch at Apr 27, 2011, 1:58 PM EDT for 16 counties in New York. It took effect at Apr 27, 2011, 10:00 PM EDT. It was in force for 14 hr.
The area
The counties it named.
The facts
- Issued
- Apr 27, 2011, 1:58 PM EDT (17:58 UTC)
- In effect from
- Apr 27, 2011, 10:00 PM EDT
- Expired
- Apr 28, 2011, 12:00 PM EDT
- In force
- 14 hr
- Issued by
- NWS Buffalo, NY
- Flood severity
- None
Counties Allegany County, NY, Cattaraugus County, NY, Cayuga County, NY, Chautauqua County, NY, Erie County, NY, Genesee County, NY, Jefferson County, NY, Lewis County, NY, Livingston County, NY, Monroe County, NY, Niagara County, NY, Ontario County, NY, Orleans County, NY, Oswego County, NY, Wayne County, NY, Wyoming County, NY
The radar
The Buffalo radar (KBUF), 90 km from the middle of the area, began a volume at 18:00 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, 6.0 hours before the alert went out and 87 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
- 27 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 987 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
229 WGUS61 KBUF 271758 FFABUF URGENT - IMMEDIATE BROADCAST REQUESTED FLOOD WATCH NATIONAL WEATHER SERVICE BUFFALO NY 158 PM EDT WED APR 27 2011 NYZ001-002-010-011-280200- /O.NEW.KBUF.FF.A.0001.110428T0200Z-110428T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NIAGARA-ORLEANS-NORTHERN ERIE-GENESEE- INCLUDING THE CITIES OF...NIAGARA FALLS...MEDINA...BUFFALO... BATAVIA 158 PM EDT WED APR 27 2011 ...FLASH FLOOD WATCH IN EFFECT FROM 10 PM EDT THIS EVENING THROUGH THURSDAY MORNING... THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A * FLASH FLOOD WATCH FOR A PORTION OF WESTERN NEW YORK... INCLUDING THE FOLLOWING COUNTIES...GENESEE...NIAGARA... NORTHERN ERIE AND ORLEANS. * FROM 10 PM EDT THIS EVENING THROUGH THURSDAY MORNING * SATURATED GROUND COMBINED WITH EXPECTED MODERATE TO HEAVY PRECIPITATION THIS EVENING AND OVERNIGHT MAY PRODUCE FLOODING. RAINFALL MAY EXCEED AN INCH TONIGHT. * LOCALIZED FLOODING IS POSSIBLE IN POOR DRAINAGE AREAS AS WELL AS ALONG SMALL STREAMS AND CREEKS. LARGER CREEKS AND RIVERS WILL ALSO RISE SIGNIFICANTLY AND MAY REACH BANKFULL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THE THREAT OF FLASH FLOODING EXISTS ALONG RIVERS AND CREEKS. IF YOU ARE IN THE WATCH AREA YOU SHOULD MONITOR WEATHER CONDITIONS CLOSELY. BE READY TO MOVE TO HIGHER GROUND IF FLOODING IS OBSERVED OR A WARNING IS ISSUED. STAY TUNED TO WEATHER RADIO OR OTHER RADIO AND TV STATIONS FOR FURTHER UPDATES. && $$ NYZ012-019>021-085-280200- /O.NEW.KBUF.FF.A.0001.110428T0200Z-110428T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WYOMING-CHAUTAUQUA-CATTARAUGUS-ALLEGANY-SOUTHERN ERIE- INCLUDING THE CITIES OF...WARSAW...JAMESTOWN...OLEAN... WELLSVILLE...ORCHARD PARK...SPRINGVILLE 158 PM EDT WED APR 27 2011 ...FLASH FLOOD WATCH IN EFFECT FROM 10 PM EDT THIS EVENING THROUGH THURSDAY MORNING... THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A * FLASH FLOOD WATCH FOR A PORTION OF WESTERN NEW YORK... INCLUDING THE FOLLOWING COUNTIES...ALLEGANY...CATTARAUGUS... CHAUTAUQUA...SOUTHERN ERIE AND WYOMING. * FROM 10 PM EDT THIS EVENING THROUGH THURSDAY MORNING * SATURATED GROUND COMBINED WITH EXPECTED MODERATE TO HEAVY PRECIPITATION THIS EVENING AND OVERNIGHT MAY PRODUCE FLOODING. RAINFALL MAY EXCEED AN INCH TONIGHT. * LOCALIZED FLOODING IS POSSIBLE IN POOR DRAINAGE AREAS AS WELL AS ALONG SMALL STREAMS AND CREEKS. LARGER CREEKS AND RIVERS WILL ALSO RISE SIGNIFICANTLY AND MAY REACH BANKFULL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THE THREAT OF FLASH FLOODING EXISTS ALONG RIVERS AND CREEKS. IF YOU ARE IN THE WATCH AREA YOU SHOULD MONITOR WEATHER CONDITIONS CLOSELY. BE READY TO MOVE TO HIGHER GROUND IF FLOODING IS OBSERVED OR A WARNING IS ISSUED. STAY TUNED TO WEATHER RADIO OR OTHER RADIO AND TV STATIONS FOR FURTHER UPDATES. && $$ NYZ003>008-013-014-280200- /O.NEW.KBUF.FF.A.0001.110428T0400Z-110428T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MONROE-WAYNE-NORTHERN CAYUGA-OSWEGO-JEFFERSON-LEWIS-LIVINGSTON- ONTARIO- INCLUDING THE CITIES OF...ROCHESTER...NEWARK...FAIR HAVEN... OSWEGO...WATERTOWN...LOWVILLE...GENESEO...CANANDAIGUA 158 PM EDT WED APR 27 2011 ...FLASH FLOOD WATCH IN EFFECT FROM MIDNIGHT EDT TONIGHT THROUGH THURSDAY MORNING... THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A * FLASH FLOOD WATCH FOR PORTIONS OF CENTRAL AND WESTERN NEW YORK...INCLUDING THE FOLLOWING COUNTIES...IN CENTRAL NEW YORK...JEFFERSON...LEWIS...NORTHERN CAYUGA AND OSWEGO. IN WESTERN NEW YORK...LIVINGSTON...MONROE...ONTARIO AND WAYNE. * FROM MIDNIGHT EDT TONIGHT THROUGH THURSDAY MORNING * SATURATED GROUND COMBINED WITH EXPECTED MODERATE TO HEAVY PRECIPITATION THIS EVENING AND OVERNIGHT MAY PRODUCE FLOODING. RAINFALL MAY EXCEED AN INCH TONIGHT. * LOCALIZED FLOODING IS POSSIBLE IN POOR DRAINAGE AREAS AS WELL AS ALONG SMALL STREAMS AND CREEKS. LARGER CREEKS AND RIVERS WILL ALSO RISE SIGNIFICANTLY AND MAY REACH BANKFULL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THE THREAT OF FLASH FLOODING EXISTS ALONG RIVERS AND CREEKS. IF YOU ARE IN THE WATCH AREA YOU SHOULD MONITOR WEATHER CONDITIONS CLOSELY. BE READY TO MOVE TO HIGHER GROUND IF FLOODING IS OBSERVED OR A WARNING IS ISSUED. STAY TUNED TO WEATHER RADIO OR OTHER RADIO AND TV STATIONS FOR FURTHER UPDATES. && $$ ZAFF
3 follow-up statements
892 WGUS61 KBUF 280159 FFABUF FLOOD WATCH NATIONAL WEATHER SERVICE BUFFALO NY 959 PM EDT WED APR 27 2011 NYZ001-002-010-011-281000- /O.CON.KBUF.FF.A.0001.110428T0200Z-110428T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NIAGARA-ORLEANS-NORTHERN ERIE-GENESEE- INCLUDING THE CITIES OF...NIAGARA FALLS...MEDINA...BUFFALO... BATAVIA 959 PM EDT WED APR 27 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF WESTERN NEW YORK...INCLUDING THE FOLLOWING COUNTIES...GENESEE...NIAGARA...NORTHERN ERIE AND ORLEANS. * THROUGH THURSDAY MORNING * SATURATED GROUND COMBINED WITH EXPECTED MODERATE TO HEAVY RAINFALL OVERNIGHT MAY PRODUCE FLOODING. RAINFALL MAY EXCEED AN INCH. * LOCALIZED FLOODING IS POSSIBLE IN POOR DRAINAGE AREAS AS WELL AS ALONG SMALL STREAMS AND CREEKS. LARGER CREEKS AND RIVERS WILL ALSO RISE SIGNIFICANTLY AND MAY REACH BANKFULL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THE THREAT OF FLASH FLOODING EXISTS ALONG RIVERS AND CREEKS. IF YOU ARE IN THE WATCH AREA YOU SHOULD MONITOR WEATHER CONDITIONS CLOSELY. BE READY TO MOVE TO HIGHER GROUND IF FLOODING IS OBSERVED OR A WARNING IS ISSUED. STAY TUNED TO WEATHER RADIO OR OTHER RADIO AND TV STATIONS FOR FURTHER UPDATES. && $$ NYZ012-019>021-085-281000- /O.CON.KBUF.FF.A.0001.110428T0200Z-110428T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ WYOMING-CHAUTAUQUA-CATTARAUGUS-ALLEGANY-SOUTHERN ERIE- INCLUDING THE CITIES OF...WARSAW...JAMESTOWN...OLEAN... WELLSVILLE...ORCHARD PARK...SPRINGVILLE 959 PM EDT WED APR 27 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF WESTERN NEW YORK...INCLUDING THE FOLLOWING COUNTIES...ALLEGANY...CATTARAUGUS...CHAUTAUQUA...SOUTHERN ERIE AND WYOMING. * THROUGH THURSDAY MORNING * SATURATED GROUND COMBINED WITH EXPECTED MODERATE TO HEAVY RAINFALL OVERNIGHT MAY PRODUCE FLOODING. RAINFALL MAY EXCEED AN INCH. * LOCALIZED FLOODING IS POSSIBLE IN POOR DRAINAGE AREAS AS WELL AS ALONG SMALL STREAMS AND CREEKS. LARGER CREEKS AND RIVERS WILL ALSO RISE SIGNIFICANTLY AND MAY REACH BANKFULL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THE THREAT OF FLASH FLOODING EXISTS ALONG RIVERS AND CREEKS. IF YOU ARE IN THE WATCH AREA YOU SHOULD MONITOR WEATHER CONDITIONS CLOSELY. BE READY TO MOVE TO HIGHER GROUND IF FLOODING IS OBSERVED OR A WARNING IS ISSUED. STAY TUNED TO WEATHER RADIO OR OTHER RADIO AND TV STATIONS FOR FURTHER UPDATES. && $$ NYZ003>008-013-014-281000- /O.CON.KBUF.FF.A.0001.110428T0400Z-110428T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MONROE-WAYNE-NORTHERN CAYUGA-OSWEGO-JEFFERSON-LEWIS-LIVINGSTON- ONTARIO- INCLUDING THE CITIES OF...ROCHESTER...NEWARK...FAIR HAVEN... OSWEGO...WATERTOWN...LOWVILLE...GENESEO...CANANDAIGUA 959 PM EDT WED APR 27 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY MORNING... THE FLASH FLOOD WATCH CONTINUES FOR * PORTIONS OF CENTRAL AND WESTERN NEW YORK...INCLUDING THE FOLLOWING COUNTIES...IN CENTRAL NEW YORK...JEFFERSON...LEWIS... NORTHERN CAYUGA AND OSWEGO. IN WESTERN NEW YORK...LIVINGSTON... MONROE...ONTARIO AND WAYNE. * THROUGH THURSDAY MORNING * SATURATED GROUND COMBINED WITH EXPECTED MODERATE TO HEAVY RAINFALL MAY PRODUCE FLOODING. RAINFALL MAY EXCEED AN INCH TONIGHT. * LOCALIZED FLOODING IS POSSIBLE IN POOR DRAINAGE AREAS AS WELL AS ALONG SMALL STREAMS AND CREEKS. LARGER CREEKS AND RIVERS WILL ALSO RISE SIGNIFICANTLY AND MAY REACH BANKFULL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THE THREAT OF FLASH FLOODING EXISTS ALONG RIVERS AND CREEKS. IF YOU ARE IN THE WATCH AREA YOU SHOULD MONITOR WEATHER CONDITIONS CLOSELY. BE READY TO MOVE TO HIGHER GROUND IF FLOODING IS OBSERVED OR A WARNING IS ISSUED. STAY TUNED TO WEATHER RADIO OR OTHER RADIO AND TV STATIONS FOR FURTHER UPDATES. && $$ JJR
218 WGUS61 KBUF 280845 FFABUF FLOOD WATCH NATIONAL WEATHER SERVICE BUFFALO NY 445 AM EDT THU APR 28 2011 NYZ003-004-013-014-280945- /O.CAN.KBUF.FF.A.0001.000000T0000Z-110428T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MONROE-WAYNE-LIVINGSTON-ONTARIO- INCLUDING THE CITIES OF...ROCHESTER...NEWARK...GENESEO... CANANDAIGUA 445 AM EDT THU APR 28 2011 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR A PORTION OF WESTERN NEW YORK HAS BEEN CANCELLED. $$ NYZ001-002-010>012-019>021-085-280945- /O.CAN.KBUF.FF.A.0001.000000T0000Z-110428T1400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NIAGARA-ORLEANS-NORTHERN ERIE-GENESEE-WYOMING-CHAUTAUQUA- CATTARAUGUS-ALLEGANY-SOUTHERN ERIE- INCLUDING THE CITIES OF...NIAGARA FALLS...MEDINA...BUFFALO... BATAVIA...WARSAW...JAMESTOWN...OLEAN...WELLSVILLE... ORCHARD PARK...SPRINGVILLE 445 AM EDT THU APR 28 2011 ...FLASH FLOOD WATCH IS CANCELLED... THE FLASH FLOOD WATCH FOR A PORTION OF WESTERN NEW YORK HAS BEEN CANCELLED. $$ NYZ005>008-281600- /O.CON.KBUF.FF.A.0001.000000T0000Z-110428T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NORTHERN CAYUGA-OSWEGO-JEFFERSON-LEWIS- INCLUDING THE CITIES OF...FAIR HAVEN...OSWEGO...WATERTOWN... LOWVILLE 445 AM EDT THU APR 28 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL NOON EDT TODAY... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF CENTRAL NEW YORK...INCLUDING THE FOLLOWING COUNTIES...JEFFERSON...LEWIS...NORTHERN CAYUGA AND OSWEGO. * UNTIL NOON EDT TODAY * SATURATED GROUND COMBINED WITH PERIODS OF MODERATE TO HEAVY RAINFALL MAY PRODUCE FLOODING. * LOCALIZED FLOODING IS POSSIBLE IN POOR DRAINAGE AREAS AS WELL AS ALONG SMALL STREAMS AND CREEKS. LARGER CREEKS AND RIVERS WILL ALSO RISE SIGNIFICANTLY AND MAY REACH BANKFULL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THE THREAT OF FLASH FLOODING EXISTS ALONG RIVERS AND CREEKS. IF YOU ARE IN THE WATCH AREA YOU SHOULD MONITOR WEATHER CONDITIONS CLOSELY. BE READY TO MOVE TO HIGHER GROUND IF FLOODING IS OBSERVED OR A WARNING IS ISSUED. STAY TUNED TO WEATHER RADIO OR OTHER RADIO AND TV STATIONS FOR FURTHER UPDATES. && $$ TMA
808 WGUS61 KBUF 281352 FFABUF FLOOD WATCH NATIONAL WEATHER SERVICE BUFFALO NY 952 AM EDT THU APR 28 2011 NYZ005>008-281600- /O.CON.KBUF.FF.A.0001.000000T0000Z-110428T1600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ NORTHERN CAYUGA-OSWEGO-JEFFERSON-LEWIS- INCLUDING THE CITIES OF...FAIR HAVEN...OSWEGO...WATERTOWN... LOWVILLE 952 AM EDT THU APR 28 2011 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL NOON EDT TODAY... THE FLASH FLOOD WATCH CONTINUES FOR * A PORTION OF CENTRAL NEW YORK...INCLUDING THE FOLLOWING COUNTIES...JEFFERSON...LEWIS...NORTHERN CAYUGA AND OSWEGO. * UNTIL NOON EDT TODAY * SATURATED GROUND COMBINED WITH ADDITIONAL LIGHT RAIN THROUGH THE MORNING MAY PRODUCE FLOODING. * LOCALIZED FLOODING IS POSSIBLE IN POOR DRAINAGE AREAS AS WELL AS ALONG SMALL STREAMS AND CREEKS. LARGER CREEKS AND RIVERS WILL ALSO RISE SIGNIFICANTLY AND MAY REACH BANKFULL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WATCH MEANS THE THREAT OF FLASH FLOODING EXISTS ALONG RIVERS AND CREEKS. IF YOU ARE IN THE WATCH AREA YOU SHOULD MONITOR WEATHER CONDITIONS CLOSELY. BE READY TO MOVE TO HIGHER GROUND IF FLOODING IS OBSERVED OR A WARNING IS ISSUED. STAY TUNED TO WEATHER RADIO OR OTHER RADIO AND TV STATIONS FOR FURTHER UPDATES. && $$ THOMAS
The office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 10:21 PM EDT | Areal Flood Advisory | BUF | Ontario, Wayne | 3 hr |
| Apr 27, 1:57 PM EDT | Gale Warning | BUF | 30 hr | |
| Apr 27, 1:57 PM EDT | Small Craft Advisory | BUF | 20 hr | |
| Apr 27, 1:58 PM EDT | Wind Advisory | BUF | Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more | 26 hr |
| Apr 27, 4:25 PM EDT | Special Marine Warning | BUF | 50 min | |
| Apr 27, 4:49 PM EDT | Special Weather Statement | BUF | Chautauqua | 41 min |
| Apr 27, 5:05 PM EDT | Special Marine Warning | BUF | 25 min | |
| Apr 27, 5:06 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 54 min |
| Apr 27, 5:43 PM EDT | Tornado Warning | BUF | Allegany, Cattaraugus | 32 min |
| Apr 27, 5:51 PM EDT | Special Marine Warning | BUF | 84 min | |
| Apr 27, 6:11 PM EDT | Special Weather Statement | BUF | Genesee, Livingston, Monroe, Wyoming | 64 min |
| Apr 27, 6:17 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Livingston | 43 min |
| Apr 27, 6:52 PM EDT | Special Weather Statement | BUF | Ontario, Wayne | 53 min |
| Apr 27, 6:56 PM EDT | Special Marine Warning | BUF | 94 min | |
| Apr 27, 6:56 PM EDT | Severe Thunderstorm Warning | BUF | Livingston, Ontario, Wayne | 49 min |
| Apr 27, 7:32 PM EDT | Severe Thunderstorm Warning | BUF | Ontario | 13 min |
| Apr 27, 7:39 PM EDT | Areal Flood Advisory | BUF | Allegany, Livingston, Monroe, Ontario, Wayne | 3 hr |
| Apr 27, 7:42 PM EDT | Severe Thunderstorm Warning | BUF | Cayuga, Ontario, Wayne | 48 min |
Nearby
Flash Flood Watches in New York, 2011Every flash flood watch 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.