Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 129, NWS Albany, NY

July 27, 20214 counties in New York

NWS Albany, NY issued this severe thunderstorm warning at Jul 27, 2021, 2:51 PM EDT for 4 counties in New York. It was in force for 54 min. 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
Jul 27, 2021, 2:51 PM EDT (18:51 UTC)
Expired
Jul 27, 2021, 3:45 PM EDT
In force
54 min
Issued by
NWS Albany, NY
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Fulton County, NY, Montgomery County, NY, Saratoga County, NY, Schenectady County, NY

The radar

The Albany radar (KENX), 38 km from the middle of the area, began a volume at 18:51 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 27, 2:51 PM EDTTSTM WND DMG1 Nw Fonda, NYTREES AND WIRES DOWNED ON ROUTE 30A BETWEEN ROUTE 5 IN FONDA AND CHESTNUT STREET IN JOHNSTOWN
Jul 27, 2:53 PM EDTTSTM WND DMG1 Sse Fultonville, NYTREE DOWN ON WIRES AT 2972 ROUTE 30A
Jul 27, 3:00 PM EDTTSTM WND DMG1 Ese Tribes Hill, NYTWO TREES DOWN IN FT. HUNTER NEAR THE INTERSECTION OF MAIN ST. AND SCHOHARIE ST.
Jul 27, 3:00 PM EDTTSTM WND DMGTribes Hill, NYLARGE BRANCHES DOWN ON MANY PROPERTIES ALONG MOHAWK DRIVE.

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.

IssuedProductOfficeLasted
Jul 27, 2:47 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 6.9 hours before the alert went out and 37 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 2021-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2021-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1464 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

526 
WUUS51 KALY 271851
SVRALY
NYC035-057-091-093-271945-
/O.NEW.KALY.SV.W.0129.210727T1851Z-210727T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Albany NY
251 PM EDT Tue Jul 27 2021

The National Weather Service in Albany has issued a

* Severe Thunderstorm Warning for...
  Schenectady County in east central New York...
  Southeastern Fulton County in eastern New York...
  Southwestern Saratoga County in east central New York...
  Southeastern Montgomery County in eastern New York...

* Until 345 PM EDT.

* At 250 PM EDT, a severe thunderstorm was located over Tribes Hill,
  or over Fonda, moving east at 30 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Schenectady, Rotterdam, Amsterdam, Gloversville, Johnstown, Scotia,
  Fonda, Glenville, Niskayuna, Ballston Spa, Hagaman, Fort Johnson,
  Galway, Rotterdam Junction, East Glenville, Burnt Hills, Tribes
  Hill, North Ballston Spa, Alplaus and Pattersonville-Rotterdam
  Junction.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

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 4307 7442 4302 7380 4276 7390 4276 7391
      4287 7448
TIME...MOT...LOC 1850Z 281DEG 26KT 4297 7432 

HAIL...1.00IN
WIND...60MPH
 
$$

BGM
3 follow-up statements
359 
WWUS51 KALY 271916
SVSALY

Severe Weather Statement
National Weather Service Albany NY
316 PM EDT Tue Jul 27 2021

NYC035-271926-
/O.CAN.KALY.SV.W.0129.000000T0000Z-210727T1945Z/
Fulton NY-
316 PM EDT Tue Jul 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN FULTON 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 1000 PM EDT for
eastern and east central New York.

LAT...LON 4298 7445 4298 7410 4304 7410 4302 7380
      4276 7390 4276 7391 4287 7448
TIME...MOT...LOC 1916Z 281DEG 26KT 4293 7407 

$$

NYC057-091-093-271945-
/O.CON.KALY.SV.W.0129.000000T0000Z-210727T1945Z/
Schenectady NY-Saratoga NY-Montgomery NY-
316 PM EDT Tue Jul 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR SCHENECTADY...SOUTHWESTERN SARATOGA AND SOUTHEASTERN MONTGOMERY
COUNTIES...

At 316 PM EDT, a severe thunderstorm was located over Glenville, or
near Amsterdam, moving east at 30 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Schenectady, Rotterdam, Amsterdam, Scotia, Fonda, Glenville,
Niskayuna, Ballston Spa, Hagaman, Fort Johnson, Galway, Tribes Hill,
North Ballston Spa, Rotterdam Junction, Alplaus, East Glenville,
Burnt Hills, Pattersonville-Rotterdam Junction, Charlton and Glen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

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

&&

LAT...LON 4298 7445 4298 7410 4304 7410 4302 7380
      4276 7390 4276 7391 4287 7448
TIME...MOT...LOC 1916Z 281DEG 26KT 4293 7407 

HAIL...1.00IN
WIND...60MPH
 
$$

BGM
810 
WWUS51 KALY 271929
SVSALY

Severe Weather Statement
National Weather Service Albany NY
329 PM EDT Tue Jul 27 2021

NYC057-271938-
/O.CAN.KALY.SV.W.0129.000000T0000Z-210727T1945Z/
Montgomery NY-
329 PM EDT Tue Jul 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONTGOMERY 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 1000 PM EDT for
eastern and east central New York.

LAT...LON 4289 7409 4290 7408 4292 7409 4302 7407
      4300 7382 4276 7390 4276 7391 4280 7411
TIME...MOT...LOC 1928Z 291DEG 28KT 4285 7396 

$$

NYC091-093-271945-
/O.CON.KALY.SV.W.0129.000000T0000Z-210727T1945Z/
Schenectady NY-Saratoga NY-
329 PM EDT Tue Jul 27 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR CENTRAL SCHENECTADY AND SOUTHWESTERN SARATOGA COUNTIES...

At 328 PM EDT, a severe thunderstorm was located over Scotia, moving
east at 30 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Schenectady, Rotterdam, Scotia, Glenville, Niskayuna, Ballston Spa,
Galway, Rotterdam Junction, Alplaus, East Glenville, Burnt Hills,
Pattersonville-Rotterdam Junction, Charlton, Glenridge, Hoffmans,
Harding Crossing, Garrison Manor, Aqueduct, Woodruff Heights and
Schonowe.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

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

&&

LAT...LON 4289 7409 4290 7408 4292 7409 4302 7407
      4300 7382 4276 7390 4276 7391 4280 7411
TIME...MOT...LOC 1928Z 291DEG 28KT 4285 7396 

HAIL...1.00IN
WIND...60MPH
 
$$

BGM
350 
WWUS51 KALY 271942
SVSALY

Severe Weather Statement
National Weather Service Albany NY
342 PM EDT Tue Jul 27 2021

NYC091-093-271951-
/O.EXP.KALY.SV.W.0129.000000T0000Z-210727T1945Z/
Schenectady NY-Saratoga NY-
342 PM EDT Tue Jul 27 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SCHENECTADY AND
SOUTHWESTERN SARATOGA COUNTIES WILL EXPIRE AT 345 PM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However heavy rain is still possible with this
thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
eastern and east central New York.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Albany.

LAT...LON 4289 7409 4290 7408 4292 7409 4302 7407
      4300 7382 4276 7390 4276 7391 4280 7411
TIME...MOT...LOC 1941Z 281DEG 26KT 4283 7384 

$$

BGM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 2:48 PM EDTSpecial Weather StatementALYMontgomery, Schenectady27 min
Jul 27, 2:52 PM EDTAreal Flood AdvisoryALYMontgomery2 hr
Jul 27, 3:09 PM EDTSpecial Weather StatementALYWarren36 min
Jul 27, 3:15 PM EDTSpecial Weather StatementALYOtsego30 min
Jul 27, 3:20 PM EDTSevere Thunderstorm WarningALYHerkimer23 min
Jul 27, 3:30 PM EDTSpecial Weather StatementALYAlbany30 min
Jul 27, 3:40 PM EDTSpecial Weather StatementALYRensselaer35 min
Jul 27, 3:43 PM EDTSpecial Weather StatementALYWashington32 min
Jul 27, 3:59 PM EDTSevere Thunderstorm WarningALYAlbany, Rensselaer, Saratoga46 min
Jul 27, 4:20 PM EDTSpecial Weather StatementALYSchoharie25 min
Jul 27, 4:30 PM EDTSevere Thunderstorm WarningALYRensselaer43 min
Jul 27, 4:34 PM EDTSevere Thunderstorm WarningALYAlbany, Greene, Schoharie21 min
Jul 27, 4:54 PM EDTSpecial Weather StatementALYRensselaer36 min
Jul 27, 5:16 PM EDTSpecial Weather StatementALYColumbia44 min

Nearby

Severe Thunderstorm Warnings in New York, 2021Every 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.