Alert archive / New York / Flash Flood Warnings in 2011
Flash Flood Warning 5, NWS Albany, NY
NWS Albany, NY issued this flash flood warning at May 20, 2011, 2:18 PM EDT for 4 counties in New York; Northwest Hills Planning Region, Connecticut; Berkshire County, Massachusetts. It was in force for 6 hr. 4 reports 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
- May 20, 2011, 2:18 PM EDT (18:18 UTC)
- Expired
- May 20, 2011, 8:05 PM EDT
- In force
- 6 hr
- Issued by
- NWS Albany, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Northwest Hills Planning Region, CT, Berkshire County, MA, Columbia County, NY, Dutchess County, NY, Greene County, NY, Ulster County, NY
The radar
The Albany radar (KENX), 65 km from the middle of the area, began a volume at 18:19 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 |
|---|---|---|---|
| May 20, 3:17 PM EDT | FLASH FLOOD | Millbrook, NY | ROUTE 44 FLOODED IN SEVERAL PLACES BETWEEN MILLBROOK AND AMENIA. |
| May 20, 3:50 PM EDT | FLASH FLOOD | Coxsackie, NY | MANSION ST. CLOSED BETWEEN BAILEY ST. AND LAWRENCE AVE DUE TO FLOODING |
| May 20, 3:58 PM EDT | FLASH FLOOD | Claverack, NY | FLOODING OF RT. 217 NORTH OF ROUTE 23 |
| May 20, 4:13 PM EDT | FLASH FLOOD | Hillsdale, NY | SR 23 FLOODED IN HILLSDALE. |
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 12:00Z, 6.3 hours before the alert went out and 70 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
- 135 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 654 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
210
WGUS51 KALY 201818
FFWALY
CTC005-MAC003-NYC021-027-039-111-210015-
/O.NEW.KALY.FF.W.0005.110520T1818Z-110521T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ALBANY NY
218 PM EDT FRI MAY 20 2011
THE NATIONAL WEATHER SERVICE IN ALBANY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
COLUMBIA COUNTY IN EAST CENTRAL NEW YORK...
THIS INCLUDES THE CITY OF HUDSON...
NORTHERN DUTCHESS COUNTY IN EAST CENTRAL NEW YORK...
THIS INCLUDES THE CITY OF RHINEBECK...
SOUTHEASTERN GREENE COUNTY IN EAST CENTRAL NEW YORK...
THIS INCLUDES THE CITY OF CATSKILL...
NORTHEASTERN ULSTER COUNTY IN EAST CENTRAL NEW YORK...
THIS INCLUDES THE CITIES OF...SAUGERTIES...KINGSTON...
NORTHWESTERN LITCHFIELD COUNTY IN NORTHERN CONNECTICUT...
SOUTHWESTERN BERKSHIRE COUNTY IN WESTERN MASSACHUSETTS...
THIS INCLUDES THE CITY OF GREAT BARRINGTON...
* UNTIL 815 PM EDT
* AT 214 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM THUNDERSTORMS WHICH IS EXPECTED TO PRODUCE
FLASH FLOODING OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HIGH
FALLS...SHARON...SHEFFIELD...HOUSATONIC...STANFORDVILLE...RED
HOOK...PORT EWEN...PINE PLAINS...PHILMONT...MILLERTON...
LIVINGSTON...LAKE KATRINE...COXSACKIE...COPAKE...CLERMONT...
CLAVERACK...ATHENS AND ANCRAM
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 4 INCHES ARE POSSIBLE IN THE
WARNED AREA.
PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY EMAIL AT
ALB.STORMREPORT@NOAA.GOV.
&&
LAT...LON 4203 7336 4172 7342 4173 7404 4200 7404
4219 7400 4238 7386 4236 7365 4224 7330
$$2 follow-up statements
571
WGUS71 KALY 202020
FFSALY
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
420 PM EDT FRI MAY 20 2011
CTC005-MAC003-NYC021-027-039-111-210015-
/O.CON.KALY.FF.W.0005.000000T0000Z-110521T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LITCHFIELD CT-BERKSHIRE MA-GREENE NY-ULSTER NY-DUTCHESS NY-
COLUMBIA NY-
420 PM EDT FRI MAY 20 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM EDT FOR
COLUMBIA...NORTHERN DUTCHESS...NORTHEASTERN ULSTER...SOUTHEASTERN
GREENE...SOUTHWESTERN BERKSHIRE AND NORTHWESTERN LITCHFIELD
COUNTIES...
AT 417 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER THE WARNED
AREA. ROUTE 9J HAS BEEN FLOODED IN THE TOWN OF STUYVESANT AS WELL AS
ROUTE 217 IN CLAVERACK.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HIGH FALLS...
SHEFFIELD...HOUSATONIC...GREAT BARRINGTON...PHILMONT...LIVINGSTON...
HUDSON...COXSACKIE...COPAKE...CLERMONT...CLAVERACK...CATSKILL AND
ATHENS
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE
WARNED AREA.
PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY EMAIL AT
ALB.STORMREPORT@NOAA.GOV.
&&
LAT...LON 4203 7336 4172 7342 4173 7404 4200 7404
4219 7400 4238 7386 4236 7365 4224 7330
$$483
WGUS71 KALY 210005
FFSALY
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
805 PM EDT FRI MAY 20 2011
CTC005-MAC003-NYC021-027-039-111-210014-
/O.CAN.KALY.FF.W.0005.000000T0000Z-110521T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LITCHFIELD CT-BERKSHIRE MA-GREENE NY-ULSTER NY-DUTCHESS NY-
COLUMBIA NY-
805 PM EDT FRI MAY 20 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR COLUMBIA...NORTHERN
DUTCHESS...NORTHEASTERN ULSTER...SOUTHEASTERN GREENE...SOUTHWESTERN
BERKSHIRE AND NORTHWESTERN LITCHFIELD COUNTIES...
THE THUNDERSTORMS WHICH PRODUCED HEAVY RAIN THIS AFTERNOON HAVE
MOVED WEST OF THE AREA. THUS THE FLASH FLOOD WARNING HAS BEEN
CANCELLED.
PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY EMAIL AT
ALB.STORMREPORT@NOAA.GOV.
LAT...LON 4203 7336 4172 7342 4173 7404 4200 7404
4219 7400 4238 7386 4236 7365 4224 7330
$$The office that day
Everything else NWS Albany, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 8:47 PM EDT | Flash Flood Warning | ALY | Columbia, Greene | 6 hr |
| May 19, 9:52 PM EDT | River Flood Warning | ALY | Oneida | 11 hr |
| May 20, 1:16 PM EDT | Areal Flood Advisory | ALY | Columbia, Dutchess | 60 min |
| May 20, 2:35 PM EDT | Flash Flood Warning | ALY | Rensselaer, Saratoga, Warren, Washington | 2 hr |
| May 20, 2:47 PM EDT | Severe Thunderstorm Warning | ALY | Columbia, Greene | 43 min |
| May 20, 3:16 PM EDT | Severe Thunderstorm Warning | ALY | Saratoga, Warren, Washington | 44 min |
| May 20, 3:46 PM EDT | Flash Flood Warning | ALY | Albany, Columbia, Greene, Rensselaer, Saratoga, Schenectady | 5 hr |
| May 20, 4:03 PM EDT | Flash Flood Warning | ALY | Fulton, Hamilton, Herkimer, Montgomery | 6 hr |
| May 20, 5:02 PM EDT | Special Weather Statement | ALY | Putnam | 28 min |
| May 20, 5:23 PM EDT | Flash Flood Warning | ALY | Dutchess, Ulster | 3 hr |
| May 20, 5:39 PM EDT | Special Weather Statement | ALY | Washington | 66 min |
| May 20, 6:59 PM EDT | Flash Flood Warning | ALY | Rensselaer, Saratoga, Schenectady, Washington | 3 hr |
Nearby
Flash Flood Warnings in New York, 2011Flash Flood Warnings in Connecticut, 2011Flash Flood Warnings in Massachusetts, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.