Alert archive / New York / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 50, NWS Buffalo, NY

July 13, 2020Jefferson County, Lewis County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 13, 2020, 6:00 PM EDT for Jefferson County, Lewis County, New York. It was in force for 35 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, 6:00 PM EDT (22:00 UTC)
Expired: Jul 13, 2020, 6:35 PM EDT
In force: 35 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Jefferson County, NY, Lewis County, NY

The radar

The Ft Drum radar (KTYX), 28 km from the middle of the area, began a volume at 22:00 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

Albany, NY (KALY), launched 12:00Z, 10.0 hours before the alert went out and 194 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: 66 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1081 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -24 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.

792 
WUUS51 KBUF 132200
SVRBUF
NYC045-049-132300-
/O.NEW.KBUF.SV.W.0050.200713T2200Z-200713T2300Z/

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

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  East central Jefferson County in central New York...
  Northern Lewis County in central New York...

* Until 700 PM EDT..

* At 559 PM EDT, severe thunderstorms were located along a line
  extending from 6 miles south of Fowler to near West Carthage,
  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...
  Carthage, Lowville, West Carthage, Herrings, Denmark, New Bremen,
  Copenhagen, Harrisville, Croghan and Castorland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4377 7549 4393 7575 4423 7546 4411 7519
TIME...MOT...LOC 2159Z 295DEG 12KT 4420 7543 4394 7566 

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

JLA

1 follow-up statement

022 
WWUS51 KBUF 132235
SVSBUF

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

NYC045-049-132245-
/O.CAN.KBUF.SV.W.0050.000000T0000Z-200713T2300Z/
Jefferson NY-Lewis NY-
635 PM EDT Mon Jul 13 2020

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL JEFFERSON AND
NORTHERN LEWIS COUNTIES IS CANCELLED...
            
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 has been cancelled.  However gusty winds and
heavy rain are still possible with these thunderstorms.

LAT...LON 4377 7549 4393 7575 4423 7546 4411 7519
TIME...MOT...LOC 2232Z 295DEG 12KT 4415 7529 4389 7552 

$$

JLA

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, 5:16 PM EDT	Severe Thunderstorm Warning	BUF	Wyoming	33 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, 6:19 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.