Alert archive / New York / Flash Flood Warnings in 2011
Flash Flood Warning 7, NWS Albany, NY
NWS Albany, NY issued this flash flood warning at May 20, 2011, 3:46 PM EDT for 6 counties in New York. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 20, 2011, 3:46 PM EDT (19:46 UTC)
- Expired
- May 20, 2011, 8:46 PM EDT
- In force
- 5 hr
- Issued by
- NWS Albany, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Albany County, NY, Columbia County, NY, Greene County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY
The radar
The Albany radar (KENX), 33 km from the middle of the area, began a volume at 19:47 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
Albany, NY (KALY), launched 12:00Z, 7.8 hours before the alert went out and 23 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.
847
WGUS51 KALY 201946
FFWALY
NYC001-021-039-083-091-093-210145-
/O.NEW.KALY.FF.W.0007.110520T1946Z-110521T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ALBANY NY
346 PM EDT FRI MAY 20 2011
THE NATIONAL WEATHER SERVICE IN ALBANY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN ALBANY COUNTY IN EAST CENTRAL NEW YORK...
THIS INCLUDES THE CITIES OF...WATERVLIET...LATHAM...DELMAR...
COLONIE...COHOES...ALBANY...
NORTHERN COLUMBIA COUNTY IN EAST CENTRAL NEW YORK...
THIS INCLUDES THE CITY OF CHATHAM...
NORTHEASTERN GREENE COUNTY IN EAST CENTRAL NEW YORK...
RENSSELAER COUNTY IN EAST CENTRAL NEW YORK...
THIS INCLUDES THE CITIES OF...TROY...RENSSELAER...NASSAU...EAST
GREENBUSH...
EXTREME SOUTH CENTRAL SARATOGA COUNTY IN EAST CENTRAL NEW YORK...
EXTREME EAST CENTRAL SCHENECTADY COUNTY IN EAST CENTRAL NEW YORK...
* UNTIL 945 PM EDT
* AT 342 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAIN EXPECTED TO PRODUCE FLASH
FLOODING OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CENTER
BRUNSWICK...WYANTSKILL...WYNANTSKILL...WEST SAND LAKE...
WATERFORD...VOORHEESVILLE...STEPHENTOWN...SELKIRK...MENANDS...
LOUDONVILLE...GUILDERLAND...GREEN ISLAND...GRAFTON...FEURA BUSH...
CASTLETON-ON-HUDSON...BERLIN AND AVERILL PARK
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 4282 7385 4284 7329 4269 7329 4252 7336
4229 7344 4236 7365 4238 7385 4220 7399
4225 7420
$$1 follow-up statement
851
WGUS71 KALY 210046
FFSALY
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ALBANY NY
846 PM EDT FRI MAY 20 2011
NYC001-021-039-083-091-093-210056-
/O.CAN.KALY.FF.W.0007.000000T0000Z-110521T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SCHENECTADY NY-ALBANY NY-GREENE NY-COLUMBIA NY-RENSSELAER NY-
SARATOGA NY-
846 PM EDT FRI MAY 20 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME SOUTH
CENTRAL SARATOGA...RENSSELAER...NORTHERN COLUMBIA...NORTHEASTERN
GREENE...EASTERN ALBANY AND EXTREME EAST CENTRAL SCHENECTADY
COUNTIES...
THE THUNDERSTORMS WHICH PRODUCED VERY HEAVY RAIN ACROSS PARTS OF THE
WARNED AREA HAVE MOVED OUT OF THE REGION. THEREFORE THE FLASH FLOOD
WARNING HAS BEEN CANCELLED.
PLEASE REPORT FLOODING TO THE NATIONAL WEATHER SERVICE BY EMAIL AT
ALB.STORMREPORT@NOAA.GOV.
LAT...LON 4282 7385 4284 7329 4269 7329 4252 7336
4229 7344 4236 7365 4238 7385 4220 7399
4225 7420
$$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, 2:18 PM EDT | Flash Flood Warning | ALY | Columbia, Dutchess, Greene, Ulster | 6 hr |
| 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, 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, 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.