Alert archive / New York / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 48, NWS Buffalo, NY

July 13, 2020Wyoming County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 13, 2020, 5:16 PM EDT for Wyoming County, New York. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 13, 2020, 5:16 PM EDT (21:16 UTC)
Expired: Jul 13, 2020, 5:49 PM EDT
In force: 33 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Wyoming County, NY

The radar

The Buffalo radar (KBUF), 47 km from the middle of the area, began a volume at 21:20 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.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.3 hours before the alert went out and 43 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1035 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

771 
WUUS51 KBUF 132116
SVRBUF
NYC121-132215-
/O.NEW.KBUF.SV.W.0048.200713T2116Z-200713T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
516 PM EDT Mon Jul 13 2020

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Northeastern Wyoming County in western New York...

* Until 615 PM EDT..

* At 516 PM EDT, a severe thunderstorm was located near Attica, or 9
  miles southeast of Darien Lakes State Park, moving southeast at 15
  mph.

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

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Perry, Warsaw, Attica, Varysburg, Silver Springs, Wyoming,
  Gainesville, Orangeville Center, Dale and Perry Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4281 7839 4287 7833 4287 7828 4281 7795
      4279 7796 4259 7812
TIME...MOT...LOC 2116Z 302DEG 15KT 4281 7828 

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

JLA

1 follow-up statement

896 
WWUS51 KBUF 132149
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
549 PM EDT Mon Jul 13 2020

NYC121-132156-
/O.CAN.KBUF.SV.W.0048.000000T0000Z-200713T2215Z/
Wyoming NY-
549 PM EDT Mon Jul 13 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WYOMING COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

LAT...LON 4281 7839 4287 7833 4287 7828 4281 7795
      4279 7796 4259 7812
TIME...MOT...LOC 2146Z 302DEG 15KT 4274 7813 

$$

Apffel

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 3:31 AM EDT	Special Weather Statement	BUF	Jefferson	29 min
Jul 13, 3:54 AM EDT	Areal Flood Warning	BUF	Jefferson	3 hr
Jul 13, 4:07 AM EDT	Special Marine Warning	BUF		38 min
Jul 13, 4:09 AM EDT	Special Weather Statement	BUF	Jefferson	66 min
Jul 13, 2:22 PM EDT	Special Weather Statement	BUF	Lewis	53 min
Jul 13, 3:19 PM EDT	Special Weather Statement	BUF	Monroe	56 min
Jul 13, 3:46 PM EDT	Special Weather Statement	BUF	Lewis	59 min
Jul 13, 4:12 PM EDT	Severe Thunderstorm Warning	BUF	Ontario, Wayne	52 min
Jul 13, 4:42 PM EDT	Special Weather Statement	BUF	Genesee	33 min
Jul 13, 5:02 PM EDT	Special Weather Statement	BUF	Ontario	58 min
Jul 13, 5:05 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	55 min
Jul 13, 5:38 PM EDT	Tornado Warning	BUF	Jefferson, Lewis	22 min
Jul 13, 5:51 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Wyoming	39 min
Jul 13, 6:00 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	35 min
Jul 13, 6:19 PM EDT	Special Weather Statement	BUF	Erie	56 min
Jul 13, 6:20 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	37 min
Jul 13, 6:33 PM EDT	Special Weather Statement	BUF	Jefferson	27 min
Jul 13, 6:35 PM EDT	Special Weather Statement	BUF	Ontario	40 min
Jul 13, 6:40 PM EDT	Special Weather Statement	BUF	Wyoming	50 min
Jul 13, 7:29 PM EDT	Special Weather Statement	BUF	Erie	31 min

Nearby

Severe Thunderstorm Warnings in New York, 2020 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.