Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 142, NWS Albany, NY

August 12, 2021Albany County, Columbia County, Rensselaer County, New York

NWS Albany, NY issued this severe thunderstorm warning at Aug 12, 2021, 3:12 PM EDT for Albany County, Columbia County, Rensselaer County, New York. It was in force for 18 min. 3 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 12, 2021, 3:12 PM EDT (19:12 UTC)
Expired: Aug 12, 2021, 3:30 PM EDT
In force: 18 min
Issued by: NWS Albany, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Albany County, NY, Columbia County, NY, Rensselaer County, NY

The radar

The Albany radar (KENX), 34 km from the middle of the area, began a volume at 19:12 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
Aug 12, 3:19 PM EDT	TSTM WND DMG	1 W East Greenbush, NY	NUMEROUS TREES AND WIRES DOWN FROM RIDGE ROAD TO PHILLIPS ROAD NORTH OF HAYS ROAD
Aug 12, 3:35 PM EDT	TSTM WND DMG	1 Wnw Schodack, NY	TREE DOWN ACROSS THE ROAD ON SOUTH OLD POST ROAD
Aug 12, 3:35 PM EDT	TSTM WND DMG	Schodack, NY	LARGE TREE DOWN ALONG ROUTE 9

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 12, 1:42 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 7.2 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 58 J/kg
Mixed-layer CIN: -212 J/kg
Mixed-layer LCL: 1178 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 56 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

574 
WUUS51 KALY 121912
SVRALY
NYC001-021-083-121930-
/O.NEW.KALY.SV.W.0142.210812T1912Z-210812T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Albany NY
312 PM EDT Thu Aug 12 2021

The National Weather Service in Albany has issued a

* Severe Thunderstorm Warning for...
  Northeastern Columbia County in east central New York...
  Southeastern Albany County in east central New York...
  Southern Rensselaer County in east central New York...

* Until 330 PM EDT.

* At 312 PM EDT, a severe thunderstorm was located over East
  Greenbush, moving east at 55 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  East Greenbush, Nassau, Delmar, Ravena, Stephentown,
  Castleton-On-Hudson, Selkirk, Averill Park, West Sand Lake,
  Coeymans, East Nassau, Brookview, Van Hoesen Station, West
  Stephentown, Jacks Corners, Beckers Corners, Millers Corners,
  Riders Mills, South Schodack and Denault Corners.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

Please report hail size...damaging winds and reports of trees down to
the National Weather Service by email at Alb.Stormreport@noaa.gov...
On Facebook at www.facebook.com/nwsalbany or twitter @nwsalbany

LAT...LON 4247 7386 4261 7385 4265 7331 4247 7338
TIME...MOT...LOC 1912Z 260DEG 49KT 4259 7373 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

NAS

1 follow-up statement

194 
WWUS51 KALY 121922 RRA
SVSALY

Severe Weather Statement
National Weather Service Albany NY
322 PM EDT Thu Aug 12 2021

NYC001-121932-
/O.CAN.KALY.SV.W.0142.000000T0000Z-210812T1930Z/
Albany NY-
322 PM EDT Thu Aug 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ALBANY COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
east central New York.

LAT...LON 4248 7376 4262 7373 4265 7331 4247 7338
TIME...MOT...LOC 1922Z 260DEG 49KT 4261 7354 

$$

NYC021-083-121930-
/O.CON.KALY.SV.W.0142.000000T0000Z-210812T1930Z/
Columbia NY-Rensselaer NY-
322 PM EDT Thu Aug 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR NORTHEASTERN COLUMBIA AND SOUTHERN RENSSELAER COUNTIES...

At 322 PM EDT, a severe thunderstorm was located over Averill Park,
or 7 miles northeast of Nassau, moving east at 55 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
East Greenbush, Nassau, Stephentown, Castleton-On-Hudson, Averill
Park, West Sand Lake, East Nassau, Totem Lodge, East Schodack,
Brookview, Garfield, North Stephentown, Van Hoesen Station, West
Stephentown, Jacks Corners, Hoag Corners, Millers Corners, Riders
Mills, Glass Lake and East Greenbush Station.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4248 7376 4262 7373 4265 7331 4247 7338
TIME...MOT...LOC 1922Z 260DEG 49KT 4261 7354 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

NAS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 9:02 PM EDT	Special Weather Statement	ALY	Herkimer	43 min
Aug 12, 1:44 PM EDT	Special Weather Statement	ALY	Schenectady	46 min
Aug 12, 1:51 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Montgomery, Saratoga, Schenectady, Schoharie	54 min
Aug 12, 2:42 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Rensselaer, Saratoga, Schenectady	48 min
Aug 12, 2:48 PM EDT	Special Weather Statement	ALY	Albany	42 min
Aug 12, 3:29 PM EDT	Severe Thunderstorm Warning	ALY	Columbia, Rensselaer	61 min
Aug 12, 3:44 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Columbia, Greene	46 min
Aug 12, 4:00 PM EDT	Heat Advisory	ALY	Albany, Columbia, Dutchess, Fulton, Greene, Herkimer and 8 more	28 hr
Aug 12, 4:03 PM EDT	Special Weather Statement	ALY	Albany	42 min
Aug 12, 4:05 PM EDT	Areal Flood Advisory	ALY	Rensselaer	2 hr
Aug 12, 4:19 PM EDT	Special Weather Statement	ALY	Dutchess	41 min
Aug 12, 4:29 PM EDT	Severe Thunderstorm Warning	ALY	Columbia	61 min

Nearby

Severe Thunderstorm Warnings in New York, 2021 Every severe thunderstorm 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.