Alert archive / New York / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 97, NWS Buffalo, NY

August 18, 2019Jefferson County, Lewis County, Oswego County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 18, 2019, 4:43 PM EDT for Jefferson County, Lewis County, Oswego County, New York. It was in force for 62 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: Aug 18, 2019, 4:43 PM EDT (20:43 UTC)
Expired: Aug 18, 2019, 5:45 PM EDT
In force: 62 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, Oswego County, NY

The radar

The Ft Drum radar (KTYX), 6 km from the middle of the area, began a volume at 20:45 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, 8.7 hours before the alert went out and 196 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: 635 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

822 
WUUS51 KBUF 182043
SVRBUF
NYC045-049-075-182145-
/O.NEW.KBUF.SV.W.0097.190818T2043Z-190818T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
443 PM EDT Sun Aug 18 2019

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Southeastern Jefferson County in central New York...
  Central Lewis County in central New York...
  Northeastern Oswego County in central New York...

* Until 545 PM EDT..

* At 443 PM EDT, a severe thunderstorm was located 7 miles southwest
  of Barnes Corners, or 16 miles east of Sandy Island Beach State
  Park, moving northeast at 30 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, Adams, Herrings, Barnes Corners,
  Adams Center, Denmark, New Bremen and Rodman.

 This includes Interstate 81 near exit 41.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4359 7590 4380 7611 4414 7546 4388 7521
TIME...MOT...LOC 2043Z 235DEG 24KT 4371 7589 

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

JJR

2 follow-up statements

303 
WWUS51 KBUF 182113
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
513 PM EDT Sun Aug 18 2019

NYC045-049-075-182145-
/O.CON.KBUF.SV.W.0097.000000T0000Z-190818T2145Z/
Jefferson NY-Lewis NY-Oswego NY-
513 PM EDT Sun Aug 18 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR SOUTHEASTERN JEFFERSON...WEST CENTRAL LEWIS AND NORTHEASTERN
OSWEGO COUNTIES...

At 511 PM EDT, a severe thunderstorm was located near Worth, or 16 
miles southeast of Watertown, moving northeast 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, Adams, Barnes Corners, Denmark,
New Bremen, Rodman, Lorraine and Copenhagen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4359 7590 4378 7609 4405 7555 4384 7532
TIME...MOT...LOC 2111Z 237DEG 15KT 4375 7578 

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

JJR

356 
WWUS51 KBUF 182141
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
541 PM EDT Sun Aug 18 2019

NYC045-049-075-182150-
/O.EXP.KBUF.SV.W.0097.000000T0000Z-190818T2145Z/
Jefferson NY-Lewis NY-Oswego NY-
541 PM EDT Sun Aug 18 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JEFFERSON...WEST
CENTRAL LEWIS AND NORTHEASTERN OSWEGO COUNTIES WILL EXPIRE AT 545 PM
EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However 
brief gusty winds are still possible with this thunderstorm.

LAT...LON 4359 7590 4378 7609 4405 7555 4384 7532
TIME...MOT...LOC 2140Z 235DEG 24KT 4386 7557 

$$

JJR

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 5:49 AM EDT	Special Marine Warning	BUF		86 min
Aug 18, 6:13 AM EDT	Special Weather Statement	BUF	Erie	92 min
Aug 18, 7:15 AM EDT	Special Weather Statement	BUF	Genesee	30 min
Aug 18, 7:35 AM EDT	Special Weather Statement	BUF	Livingston, Wyoming	40 min
Aug 18, 8:04 AM EDT	Special Marine Warning	BUF		56 min
Aug 18, 8:04 AM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	41 min
Aug 18, 8:46 AM EDT	Special Weather Statement	BUF	Chautauqua	44 min
Aug 18, 3:02 PM EDT	Special Weather Statement	BUF	Cayuga	43 min
Aug 18, 3:14 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Wayne	46 min
Aug 18, 3:16 PM EDT	Special Weather Statement	BUF	Livingston, Ontario, Wayne, Wyoming	44 min
Aug 18, 3:36 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	43 min
Aug 18, 4:16 PM EDT	Flash Flood Warning	BUF	Ontario	3 hr
Aug 18, 5:54 PM EDT	Special Weather Statement	BUF	Lewis	51 min
Aug 18, 6:57 PM EDT	Special Weather Statement	BUF	Livingston	48 min
Aug 18, 7:03 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston, Ontario	42 min

Nearby

Severe Thunderstorm Warnings in New York, 2019 Every severe thunderstorm warning in 2019

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.