Alert archive / New York / Flash Flood Warnings in 2021

Flash Flood Warning 10, NWS Albany, NY

July 14, 2021Rensselaer County, New York

NWS Albany, NY issued this flash flood warning at Jul 14, 2021, 4:14 PM EDT for Rensselaer County, New York. It was in force for 3 hr. 7 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
Jul 14, 2021, 4:14 PM EDT (20:14 UTC)
Expired
Jul 14, 2021, 6:47 PM EDT
In force
3 hr
Issued by
NWS Albany, NY
Area
Storm-based polygon
Flood severity
None

County Rensselaer County, NY

The radar

The Albany radar (KENX), 35 km from the middle of the area, began a volume at 20:16 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

TimeReportWhereRemark
Jul 14, 4:30 PM EDTFLASH FLOODPoestenkill, NYSEVERAL REPORTS OF ROADS FLOODED IN THE POESTENKILL AREA.
Jul 14, 4:34 PM EDTFLASH FLOODEast Greenbush, NYONE LANE OF COLUMBIA TURNPIKE CLOSED. ROCKS AND DEBRIS WASHED ONTO SOME ROADS.
Jul 14, 5:15 PM EDTFLASH FLOOD1 Ene West Sand Lake, NYSEVERAL INCHES OF MOVING WATER FLOWING OVER ROUTE 43 IN SEVERAL LOCATIONS BETWEEN WEST SAND LAKE AND AVERILL PARK.
Jul 14, 5:15 PM EDTFLASH FLOOD1 Nnw Averill Park, NYROUTE 66 WASHED OUT FROM FLASH FLOODING.
Jul 14, 5:30 PM EDTFLASH FLOODEast Greenbush, NYWATER REACHING HOMES AND FLOODING BASEMENTS ALONG BERKSHIRE DRIVE AD EVERGREEN WAY.
Jul 14, 5:30 PM EDTFLASH FLOODEast Greenbush, NYWATER REACHING HOMES AND FLOODING BASEMENTS ALONG BERKSHIRE DRIVE AND EVERGREEN WAY.
Jul 14, 6:28 PM EDTHEAVY RAIN 1.17Rensselaer, NYWEATHERNET6

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, 8.2 hours before the alert went out and 16 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.

Skew-T log-pSkew-T log-p diagram, Albany, NY at 12:00Z on 2021-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 12:00Z on 2021-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 129 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
20 J/kg
Mixed-layer CIN
-211 J/kg
Mixed-layer LCL
871 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
129 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

499 
WGUS51 KALY 142014
FFWALY
NYC083-142315-
/O.NEW.KALY.FF.W.0010.210714T2014Z-210714T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Albany NY
414 PM EDT Wed Jul 14 2021

The National Weather Service in Albany has issued a

* Flash Flood Warning for...
  West Central Rensselaer County in east central New York...

* Until 715 PM EDT.

* At 414 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. The expected rainfall rate is 1 to 2 inches in 1 
  hour. Additional rainfall amounts of 1 to 2 inches are possible in 
  the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  East Greenbush, Rensselaer, West Sand Lake, Wynantskill, 
  Wyantskill, Averill Park, North Greenbush, Poestenkill, Snyders 
  Corner, Best, Eastmor, Luther, Defreestville, Couse, Barberville, 
  Hampton Manor and Ives Corner.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4269 7366 4271 7351 4263 7356 4258 7373
      4265 7373

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR

$$

KSL
1 follow-up statement
229 
WGUS71 KALY 142247
FFSALY

Flash Flood Statement
National Weather Service Albany NY
647 PM EDT Wed Jul 14 2021

NYC083-142257-
/O.CAN.KALY.FF.W.0010.000000T0000Z-210714T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Rensselaer NY-
647 PM EDT Wed Jul 14 2021

...FLASH FLOOD WARNING FOR WEST CENTRAL RENSSELAER COUNTY HAS BEEN 
REPLACED WITH A FLOOD WARNING...

Heavy rain has ended across the warning area. However, law 
enforcement reports many roads remain closed due to flooding.

LAT...LON 4269 7366 4271 7351 4263 7356 4258 7373
      4265 7373

$$

KSL

The office that day

Everything else NWS Albany, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 13, 10:59 PM EDTSpecial Weather StatementALYHamilton, Herkimer46 min
Jul 13, 11:21 PM EDTSpecial Weather StatementALYOtsego39 min
Jul 13, 11:47 PM EDTSpecial Weather StatementALYFulton, Hamilton, Herkimer, Montgomery43 min
Jul 14, 12:42 AM EDTSpecial Weather StatementALYUlster48 min
Jul 14, 1:08 PM EDTSpecial Weather StatementALYSaratoga37 min
Jul 14, 1:53 PM EDTSpecial Weather StatementALYWashington52 min
Jul 14, 2:32 PM EDTSpecial Weather StatementALYRensselaer43 min
Jul 14, 2:47 PM EDTSpecial Weather StatementALYRensselaer43 min
Jul 14, 2:58 PM EDTSevere Thunderstorm WarningALYRensselaer, Saratoga, Washington62 min
Jul 14, 3:09 PM EDTSevere Thunderstorm WarningALYAlbany, Rensselaer66 min
Jul 14, 3:18 PM EDTSevere Thunderstorm WarningALYWashington57 min
Jul 14, 3:22 PM EDTAreal Flood AdvisoryALYAlbany, Rensselaer3 hr
Jul 14, 3:44 PM EDTFlash Flood WarningALYRensselaer2 hr
Jul 14, 3:53 PM EDTSevere Thunderstorm WarningALYRensselaer52 min
Jul 14, 4:15 PM EDTSevere Thunderstorm WarningALYRensselaer28 min
Jul 14, 4:49 PM EDTFlash Flood WarningALYRensselaer3 hr
Jul 14, 4:51 PM EDTSpecial Weather StatementALYRensselaer24 min
Jul 14, 5:39 PM EDTAreal Flood AdvisoryALYColumbia3 hr
Jul 14, 5:54 PM EDTAreal Flood AdvisoryALYRensselaer3 hr
Jul 14, 6:12 PM EDTAreal Flood WarningALYRensselaer3 hr
Jul 14, 6:47 PM EDTAreal Flood WarningALYRensselaer3 hr
Jul 14, 6:49 PM EDTSpecial Weather StatementALYColumbia41 min
Jul 14, 6:56 PM EDTSpecial Weather StatementALYGreene64 min
Jul 14, 7:06 PM EDTFlash Flood WarningALYColumbia3 hr
Jul 14, 7:14 PM EDTAreal Flood AdvisoryALYColumbia2 hr
Jul 14, 7:57 PM EDTAreal Flood WarningALYRensselaer3 hr

Nearby

Flash Flood Warnings in New York, 2021Every flash flood warning in 2021

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.