Alert archive / New York / Tornado Warnings in 2020

Tornado Warning 2, NWS Buffalo, NY

July 16, 2020Cattaraugus County, Chautauqua County, Erie County, New York

NWS Buffalo, NY issued this tornado warning at Jul 16, 2020, 4:07 PM EDT for Cattaraugus County, Chautauqua County, Erie County, New York. It was in force for 38 min. 2 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 16, 2020, 4:07 PM EDT (20:07 UTC)
Expired
Jul 16, 2020, 4:45 PM EDT
In force
38 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY

The radar

The Buffalo radar (KBUF), 48 km from the middle of the area, began a volume at 20:08 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 16, 4:16 PM EDTTSTM WND DMGIrving, NYMULTIPLE TREES DOWN.
Jul 16, 4:16 PM EDTTSTM WND DMGIrving, NYMULTIPLE TREES DOWN.

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 16, 1:20 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.1 hours before the alert went out and 49 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, Buffalo Intl Airport, NY at 12:00Z on 2020-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 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, Buffalo Intl Airport, NY at 12:00Z on 2020-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 171 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
12 J/kg
Mixed-layer CIN
-260 J/kg
Mixed-layer LCL
1469 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
171 m²/s²
0-3 km storm-relative helicity
161 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

375 
WFUS51 KBUF 162007
TORBUF
NYC009-013-029-162045-
/O.NEW.KBUF.TO.W.0002.200716T2007Z-200716T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Buffalo NY
407 PM EDT Thu Jul 16 2020

The National Weather Service in Buffalo has issued a

* Tornado Warning for...
  Northwestern Cattaraugus County in western New York...
  Southern Erie County in western New York...
  Northeastern Chautauqua County in western New York...

* Until 445 PM EDT..

* At 406 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Silver Creek, or 8 miles east of Dunkirk, moving
  northeast at 20 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Evangola State Park around 425 PM EDT.
  Evans, Angola and Angola on the Lake around 435 PM EDT.
  North Collins around 440 PM EDT.
  Eden and Derby around 445 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Sheridan, Silver Creek Reservoir, West Falls, Forestville,
Versailles, Farnham, Langford, Collins and Perrysburg.

This includes Interstate 90 between exits 58 and 55.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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

&&

LAT...LON 4258 7926 4260 7919 4263 7917 4285 7878
      4262 7859 4240 7918 4255 7931
TIME...MOT...LOC 2006Z 237DEG 19KT 4252 7917 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

RSH
2 follow-up statements
865 
WWUS51 KBUF 162019
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
419 PM EDT Thu Jul 16 2020

NYC009-013-029-162045-
/O.CON.KBUF.TO.W.0002.000000T0000Z-200716T2045Z/
Cattaraugus NY-Erie NY-Chautauqua NY-
419 PM EDT Thu Jul 16 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR
NORTHWESTERN CATTARAUGUS...SOUTHERN ERIE AND NORTHEASTERN CHAUTAUQUA
COUNTIES...
    
At 419 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Evangola State Park, or 13 miles east of Dunkirk,
moving northeast at 20 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Evans, Angola and Angola on the Lake around 435 PM EDT.
  North Collins around 440 PM EDT.
  Derby around 445 PM EDT.
  Eden around 455 PM EDT.
  Hamburg, Boston and North Boston around 500 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Versailles, Farnham, West Falls and Langford.

 This includes Interstate 90 between exits 58 and 55.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

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

&&

LAT...LON 4285 7878 4262 7859 4245 7906 4258 7920
TIME...MOT...LOC 2019Z 237DEG 19KT 4256 7909 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Reynolds
935 
WWUS51 KBUF 162043
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
443 PM EDT Thu Jul 16 2020

NYC009-013-029-162052-
/O.EXP.KBUF.TO.W.0002.000000T0000Z-200716T2045Z/
Cattaraugus NY-Erie NY-Chautauqua NY-
443 PM EDT Thu Jul 16 2020

...THE TORNADO WARNING FOR NORTHWESTERN CATTARAUGUS...SOUTHERN ERIE
AND NORTHEASTERN CHAUTAUQUA COUNTIES WILL EXPIRE AT 445 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
western New York.

LAT...LON 4285 7878 4262 7859 4245 7906 4258 7920
TIME...MOT...LOC 2042Z 237DEG 19KT 4262 7897 

$$

Reynolds

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 4:11 AM EDTSmall Craft AdvisoryBUF28 hr
Jul 16, 11:28 AM EDTSpecial Weather StatementBUFGenesee32 min
Jul 16, 11:57 AM EDTSpecial Weather StatementBUFGenesee33 min
Jul 16, 12:09 PM EDTSpecial Marine WarningBUF66 min
Jul 16, 12:33 PM EDTSpecial Weather StatementBUFMonroe27 min
Jul 16, 12:37 PM EDTSevere Thunderstorm WarningBUFMonroe38 min
Jul 16, 1:42 PM EDTSpecial Marine WarningBUF93 min
Jul 16, 2:12 PM EDTSpecial Marine WarningBUF22 min
Jul 16, 2:39 PM EDTSpecial Weather StatementBUFOswego36 min
Jul 16, 3:04 PM EDTSpecial Marine WarningBUF41 min
Jul 16, 3:48 PM EDTSpecial Marine WarningBUF57 min
Jul 16, 3:52 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua, Erie53 min
Jul 16, 3:53 PM EDTSpecial Marine WarningBUF67 min
Jul 16, 4:08 PM EDTSpecial Marine WarningBUF53 min
Jul 16, 4:13 PM EDTSevere Thunderstorm WarningBUFChautauqua62 min
Jul 16, 4:23 PM EDTSpecial Weather StatementBUFMonroe67 min
Jul 16, 4:44 PM EDTSpecial Weather StatementBUFErie46 min
Jul 16, 5:02 PM EDTSpecial Weather StatementBUFGenesee43 min
Jul 16, 5:12 PM EDTSpecial Weather StatementBUFCattaraugus, Erie63 min
Jul 16, 5:14 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua, Erie46 min
Jul 16, 5:36 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua24 min
Jul 16, 5:49 PM EDTAreal Flood WarningBUFChautauqua, Erie, Genesee, Wyoming3 hr
Jul 16, 5:50 PM EDTSpecial Weather StatementBUFGenesee, Livingston, Ontario, Wayne55 min
Jul 16, 5:50 PM EDTTornado WarningBUFCattaraugus, Chautauqua40 min
Jul 16, 5:58 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Erie, Wyoming47 min
Jul 16, 6:32 PM EDTTornado WarningBUFCattaraugus28 min
Jul 16, 6:42 PM EDTFlash Flood WarningBUFCattaraugus, Chautauqua3 hr
Jul 16, 6:50 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus40 min
Jul 16, 6:59 PM EDTTornado WarningBUFCattaraugus31 min
Jul 16, 7:15 PM EDTFlash Flood WarningBUFAllegany, Cattaraugus4 hr
Jul 16, 7:17 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua43 min
Jul 16, 7:42 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus48 min

Nearby

Tornado Warnings in New York, 2020Every tornado warning in 2020Tornadoes in 2020

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.