Alert archive / New York / Flash Flood Warnings in 2021

Flash Flood Warning 26, NWS Albany, NY

August 13, 2021Albany County, New York

NWS Albany, NY issued this flash flood warning at Aug 13, 2021, 7:15 PM EDT for Albany County, New York. It was in force for 2 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
Aug 13, 2021, 7:15 PM EDT (23:15 UTC)
Expired
Aug 13, 2021, 9:21 PM EDT
In force
2 hr
Issued by
NWS Albany, NY
Area
Storm-based polygon
Flood severity
None

County Albany County, NY

The radar

The Albany radar (KENX), 25 km from the middle of the area, began a volume at 23:15 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
Aug 13, 7:24 PM EDTFLASH FLOOD2 Sw Voorheesville, NYROAD CLOSED NEAR NEW SCOTLAND RD AND NEW SALEM RD.
Aug 13, 7:31 PM EDTFLASH FLOOD2 Ese Westmere, NYROAD CLOSED ON FULLER RD AND ROUTE 20.
Aug 13, 7:31 PM EDTFLASH FLOOD2 Se Westmere, NYROAD CLOSED NEAR 15520 SCHOOLHOUSE RD.
Aug 13, 7:36 PM EDTFLASH FLOOD2 Ese Westmere, NYROAD CLOSED ON SHADY LANE AND OAK DRIVE.
Aug 13, 8:12 PM EDTHEAVY RAIN 1.982 Ese Westmere, NY1.98 INCHES IN 1.5 HOURS. PEA SIZE HAIL TOO.
Aug 13, 9:25 PM EDTHEAVY RAIN 1.111 W Albany, NYMOST FELL IN AN HOUR
Aug 13, 9:25 PM EDTHEAVY RAIN 1.111 W Albany, NYSTORM TOTAL. MOST FELL WITHIN ONE HOUR.

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, 11.3 hours before the alert went out and 6 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 2021-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 239 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 2021-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.1939Sfc1 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
239 J/kg
Mixed-layer CIN
-124 J/kg
Mixed-layer LCL
879 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

442 
WGUS51 KALY 132315
FFWALY
NYC001-140215-
/O.NEW.KALY.FF.W.0026.210813T2315Z-210814T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Albany NY
715 PM EDT Fri Aug 13 2021

The National Weather Service in Albany has issued a

* Flash Flood Warning for...
  Northeastern Albany County in east central New York...

* Until 1015 PM EDT.

* At 715 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to 1 inch of rain has 
  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...
  Albany, Watervliet, Rensselaer, Colonie, Delmar, Guilderland, 
  Menands, Voorheesville, Loudonville, New Scotland, North 
  Bethlehem, Karlsfeld, McKownville, Slingerlands, Westmere, 
  Elsmere, Roessleville, Normansville, West Albany and Bleecker 
  Stadium.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4261 7376 4258 7395 4268 7398 4273 7383
      4274 7372 4269 7371 4268 7372 4267 7372
      4266 7373 4266 7374 4265 7374 4265 7375
      4264 7375 4263 7375

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

$$

KSL
1 follow-up statement
123 
WGUS71 KALY 140121
FFSALY

Flash Flood Statement
National Weather Service Albany NY
921 PM EDT Fri Aug 13 2021

NYC001-140131-
/O.CAN.KALY.FF.W.0026.000000T0000Z-210814T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Albany NY-
921 PM EDT Fri Aug 13 2021

...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN ALBANY COUNTY...

Flood waters have receded. The heavy rain has ended. Flooding is no 
longer expected to pose a threat. Please continue to heed remaining 
road closures.

LAT...LON 4261 7376 4258 7395 4268 7398 4273 7383
      4274 7372 4269 7371 4268 7372 4267 7372
      4266 7373 4266 7374 4265 7374 4265 7375
      4264 7375 4263 7375

$$

KSL

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 12, 11:29 PM EDTSpecial Weather StatementALYUlster46 min
Aug 13, 12:15 AM EDTSpecial Weather StatementALYDutchess45 min
Aug 13, 2:14 PM EDTSpecial Weather StatementALYOneida46 min
Aug 13, 2:36 PM EDTSevere Thunderstorm WarningALYHerkimer39 min
Aug 13, 2:56 PM EDTSpecial Weather StatementALYFulton49 min
Aug 13, 3:00 PM EDTSpecial Weather StatementALYLewis45 min
Aug 13, 3:10 PM EDTSevere Thunderstorm WarningALYFulton, Herkimer, Montgomery48 min
Aug 13, 3:16 PM EDTSpecial Weather StatementALYOneida44 min
Aug 13, 3:40 PM EDTSpecial Weather StatementALYMontgomery50 min
Aug 13, 3:42 PM EDTSevere Thunderstorm WarningALYFulton, Montgomery44 min
Aug 13, 3:54 PM EDTSpecial Weather StatementALYHamilton51 min
Aug 13, 3:58 PM EDTSpecial Weather StatementALYOneida47 min
Aug 13, 4:12 PM EDTSpecial Weather StatementALYMontgomery48 min
Aug 13, 4:25 PM EDTSpecial Weather StatementALYSaratoga50 min
Aug 13, 4:33 PM EDTSevere Thunderstorm WarningALYSaratoga46 min
Aug 13, 4:52 PM EDTSpecial Weather StatementALYSchenectady, Schoharie38 min
Aug 13, 5:03 PM EDTSpecial Weather StatementALYFulton42 min
Aug 13, 5:10 PM EDTSpecial Weather StatementALYRensselaer50 min
Aug 13, 5:31 PM EDTSevere Thunderstorm WarningALYFulton, Montgomery, Schoharie47 min
Aug 13, 5:42 PM EDTAreal Flood AdvisoryALYHerkimer, Montgomery3 hr
Aug 13, 5:58 PM EDTSpecial Weather StatementALYRensselaer47 min
Aug 13, 6:03 PM EDTSpecial Weather StatementALYMontgomery42 min
Aug 13, 6:07 PM EDTAreal Flood AdvisoryALYMontgomery, Schoharie3 hr
Aug 13, 6:11 PM EDTSpecial Weather StatementALYSchenectady49 min
Aug 13, 6:31 PM EDTSpecial Weather StatementALYAlbany44 min
Aug 13, 6:45 PM EDTSevere Thunderstorm WarningALYAlbany45 min
Aug 13, 6:51 PM EDTAreal Flood AdvisoryALYAlbany2 hr
Aug 13, 6:51 PM EDTSpecial Weather StatementALYSchoharie39 min
Aug 13, 7:28 PM EDTSevere Thunderstorm WarningALYAlbany, Rensselaer35 min
Aug 13, 7:41 PM EDTSpecial Weather StatementALYUlster49 min
Aug 13, 7:48 PM EDTSpecial Weather StatementALYColumbia42 min

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.