Alert archive / New York / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 102, NWS Albany, NY

July 7, 20215 counties in New York

NWS Albany, NY issued this severe thunderstorm warning at Jul 7, 2021, 11:20 PM EDT for 5 counties in New York. It was in force for 55 min. 1 report 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 7, 2021, 11:20 PM EDT (03:20 UTC)
Expired
Jul 8, 2021, 12:15 AM EDT
In force
55 min
Issued by
NWS Albany, NY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Fulton County, NY, Herkimer County, NY, Montgomery County, NY, Schenectady County, NY, Schoharie County, NY

The radar

The Albany radar (KENX), 51 km from the middle of the area, began a volume at 03:19 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 8, 12:00 AM EDTTSTM WND DMG4 Ne Cobleskill, NYTREES DOWN ON GROVERS CORNERS ROAD IN THE TOWN OF CARLISLE.

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 7, 2:41 PM EDTSevere Thunderstorm WatchSPC10 hr

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 3.3 hours before the alert went out and 68 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 00:00Z on 2021-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 821 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 00:00Z on 2021-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
821 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
930 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.0

Open this sounding in Storm Lab

The text

As transmitted.

382 
WUUS51 KALY 080320
SVRALY
NYC035-043-057-093-095-080415-
/O.NEW.KALY.SV.W.0102.210708T0320Z-210708T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Albany NY
1120 PM EDT Wed Jul 7 2021

The National Weather Service in Albany has issued a

* Severe Thunderstorm Warning for...
  Southwestern Schenectady County in east central New York...
  Southwestern Fulton County in eastern New York...
  Schoharie County in east central New York...
  Southern Herkimer County in eastern New York...
  Montgomery County in eastern New York...

* Until 1215 AM EDT.

* At 1119 PM EDT, severe thunderstorms were located along a line
  extending from near Exeter Center to Davenport to near Andes,
  moving northeast at 45 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Johnstown, Ilion, Herkimer, Little Falls, Cobleskill, Canajoharie,
  Fonda, Jefferson, Mohawk, Frankfort, Fort Plain, Dolgeville, St.
  Johnsville, Ephratah, Middleburgh, Gilboa, Summit, Schoharie,
  Richmondville and West Winfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

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 4318 7478 4312 7449 4288 7422 4270 7417
      4255 7424 4238 7425 4236 7428 4237 7438
      4236 7444 4242 7462 4251 7471 4262 7463
      4274 7467 4283 7465 4290 7488 4282 7491
      4291 7510 4286 7514 4286 7521 4300 7521
TIME...MOT...LOC 0319Z 229DEG 37KT 4272 7512 4247 7486 4213 7484 

HAIL...0.75IN
WIND...60MPH
 
$$

JPV
2 follow-up statements
371 
WWUS51 KALY 080342
SVSALY

Severe Weather Statement
National Weather Service Albany NY
1142 PM EDT Wed Jul 7 2021

NYC035-043-057-093-095-080415-
/O.CON.KALY.SV.W.0102.000000T0000Z-210708T0415Z/
Schenectady NY-Fulton NY-Schoharie NY-Herkimer NY-Montgomery NY-
1142 PM EDT Wed Jul 7 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR SOUTHWESTERN SCHENECTADY...SOUTHWESTERN FULTON...SCHOHARIE...
SOUTHERN HERKIMER AND MONTGOMERY COUNTIES...

At 1142 PM EDT, severe thunderstorms were located along a line
extending from near Jordanville to near Richmondville to Roxbury,
moving northeast at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Johnstown, Ilion, Herkimer, Little Falls, Cobleskill, Canajoharie,
Fonda, Jefferson, Mohawk, Frankfort, Fort Plain, Dolgeville, St.
Johnsville, Ephratah, Middleburgh, Gilboa, Summit, Schoharie,
Richmondville and West Winfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4312 7480 4308 7454 4288 7422 4270 7417
      4255 7424 4238 7425 4236 7428 4237 7438
      4236 7444 4242 7462 4251 7471 4262 7463
      4274 7467 4283 7465 4290 7488 4282 7491
      4291 7510 4286 7514 4286 7521 4300 7521
TIME...MOT...LOC 0342Z 228DEG 37KT 4289 7493 4263 7462 4229 7455 

HAIL...<.75IN
WIND...60MPH
 
$$

JPV
551 
WWUS51 KALY 080413
SVSALY

Severe Weather Statement
National Weather Service Albany NY
1213 AM EDT Thu Jul 8 2021

NYC035-043-057-093-095-080423-
/O.EXP.KALY.SV.W.0102.000000T0000Z-210708T0415Z/
Schenectady NY-Fulton NY-Schoharie NY-Herkimer NY-Montgomery NY-
1213 AM EDT Thu Jul 8 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN SCHENECTADY...
SOUTHWESTERN FULTON...SCHOHARIE...SOUTHERN HERKIMER AND MONTGOMERY
COUNTIES WILL EXPIRE AT 1215 AM EDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
east central New York.

LAT...LON 4312 7480 4308 7454 4288 7422 4270 7417
      4255 7424 4238 7425 4236 7428 4237 7438
      4236 7444 4242 7462 4251 7471 4262 7463
      4274 7467 4283 7465 4290 7488 4282 7491
      4291 7510 4286 7514 4286 7521 4300 7521
TIME...MOT...LOC 0413Z 229DEG 37KT 4310 7461 4284 7430 4250 7423 

$$

JPV

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 8:01 PM EDTSpecial Weather StatementALYDutchess44 min
Jul 7, 8:21 PM EDTAreal Flood AdvisoryALYColumbia3 hr
Jul 7, 8:23 PM EDTSevere Thunderstorm WarningALYDutchess67 min
Jul 7, 8:35 PM EDTSpecial Weather StatementALYUlster40 min
Jul 7, 8:37 PM EDTSpecial Weather StatementALYColumbia38 min
Jul 7, 8:47 PM EDTAreal Flood AdvisoryALYDutchess3 hr
Jul 7, 9:07 PM EDTAreal Flood AdvisoryALYColumbia, Dutchess, Ulster3 hr
Jul 7, 9:27 PM EDTSpecial Weather StatementALYColumbia33 min
Jul 7, 9:49 PM EDTSpecial Weather StatementALYGreene26 min
Jul 7, 10:31 PM EDTSpecial Weather StatementALYDutchess29 min
Jul 7, 10:46 PM EDTSpecial Weather StatementALYUlster29 min
Jul 7, 10:47 PM EDTSpecial Weather StatementALYDutchess28 min
Jul 7, 11:02 PM EDTSevere Thunderstorm WarningALYColumbia, Dutchess, Greene, Ulster58 min
Jul 7, 11:22 PM EDTSpecial Weather StatementALYDutchess38 min
Jul 8, 12:00 AM EDTSevere Thunderstorm WarningALYAlbany, Columbia, Dutchess, Greene, Rensselaer, Schoharie and 1 more60 min
Jul 8, 12:01 AM EDTSevere Thunderstorm WarningALYDutchess59 min
Jul 8, 12:13 AM EDTSpecial Weather StatementALYDutchess32 min
Jul 8, 12:15 AM EDTSpecial Weather StatementALYFulton, Montgomery, Saratoga, Schenectady45 min
Jul 8, 12:29 AM EDTAreal Flood AdvisoryALYColumbia, Dutchess, Greene, Ulster2 hr
Jul 8, 12:34 AM EDTSpecial Weather StatementALYAlbany, Rensselaer, Schenectady41 min
Jul 8, 12:54 AM EDTSpecial Weather StatementALYDutchess36 min
Jul 8, 12:58 AM EDTSpecial Weather StatementALYColumbia47 min
Jul 8, 3:57 AM EDTFlash Flood WatchALYColumbia, Dutchess, Greene, Ulster32 hr
Jul 8, 9:57 AM EDTAreal Flood AdvisoryALYColumbia, Dutchess, Ulster3 hr
Jul 8, 10:54 AM EDTFlash Flood WarningALYColumbia, Dutchess, Greene, Ulster3 hr
Jul 8, 11:28 AM EDTSpecial Weather StatementALYColumbia32 min
Jul 8, 2:14 PM EDTSpecial Weather StatementALYDutchess31 min
Jul 8, 3:10 PM EDTAreal Flood AdvisoryALYDutchess3 hr
Jul 8, 7:39 PM EDTSpecial Weather StatementALYHerkimer51 min
Jul 8, 7:46 PM EDTSpecial Weather StatementALYHerkimer44 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.