Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 70, NWS Buffalo, NY

July 8, 2017Lewis County, Oswego County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 8, 2017, 4:42 AM EDT for Lewis County, Oswego County, New York. It was in force for 49 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 8, 2017, 4:42 AM EDT (08:42 UTC)
Expired: Jul 8, 2017, 5:31 AM EDT
In force: 49 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Lewis County, NY, Oswego County, NY

The radar

The Ft Drum radar (KTYX), 30 km from the middle of the area, began a volume at 08:43 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

Time	Report	Where	Remark
Jul 8, 4:43 AM EDT	TSTM WND DMG	1 W Williamstown, NY	DOWNED TREES ON ROUTE 183. ALL LANES CLOSED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 8.7 hours before the alert went out and 174 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: 11 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 1300 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

408 
WUUS51 KBUF 080842
SVRBUF
NYC049-075-080945-
/O.NEW.KBUF.SV.W.0070.170708T0842Z-170708T0945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
442 AM EDT SAT JUL 8 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  Southern Lewis County in central New York...
  East central Oswego County in central New York...

* Until 545 AM EDT.

* At 442 AM EDT, a severe thunderstorm was located near Redfield, or
  11 miles northwest of Camden, moving northeast at 30 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect wind damage to trees and power lines. 

* Locations impacted include...
  Lowville, Redfield, Highmarket, Whetstone Gulf State Park, Watson,
  Martinsburg, Williamstown and Lyonsdale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4342 7553 4348 7581 4337 7586 4333 7596
      4349 7610 4382 7541 4358 7519
TIME...MOT...LOC 0842Z 241DEG 24KT 4346 7590 

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

Apffel

3 follow-up statements

786 
WWUS51 KBUF 080900
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
500 AM EDT SAT JUL 8 2017

NYC075-080907-
/O.CAN.KBUF.SV.W.0070.000000T0000Z-170708T0945Z/
Oswego NY-
500 AM EDT SAT JUL 8 2017

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL OSWEGO COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
Oswego county. Therefore, the warning has been cancelled.

LAT...LON 4347 7575 4361 7576 4382 7541 4358 7519
      4342 7553
TIME...MOT...LOC 0857Z 240DEG 31KT 4350 7576 

$$

NYC049-080945-
/O.CON.KBUF.SV.W.0070.000000T0000Z-170708T0945Z/
Lewis NY-
500 AM EDT SAT JUL 8 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM EDT
FOR SOUTHERN LEWIS COUNTY...

At 457 AM EDT, a severe thunderstorm was located near Redfield, or 11
miles north of Camden, moving northeast at 35 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect wind damage to trees and power lines. 

Locations impacted include...
Lowville, Whetstone Gulf State Park, Highmarket, Watson, Martinsburg,
Lyonsdale, Greig and Port Leyden.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4347 7575 4361 7576 4382 7541 4358 7519
      4342 7553
TIME...MOT...LOC 0857Z 240DEG 31KT 4350 7576 

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

Apffel

213 
WWUS51 KBUF 080919
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
519 AM EDT SAT JUL 8 2017

NYC049-080945-
/O.CON.KBUF.SV.W.0070.000000T0000Z-170708T0945Z/
Lewis NY-
519 AM EDT SAT JUL 8 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM EDT
FOR SOUTHEASTERN LEWIS COUNTY...

At 519 AM EDT, a severe thunderstorm was located near Highmarket, or
8 miles west of Boonville, moving east at 40 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect wind damage to trees and power lines. 

Locations impacted include...
Highmarket, Lyonsdale, Greig, Port Leyden, Lyons Falls,
Constableville, Turin and Mohawk Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4356 7564 4372 7532 4358 7519 4342 7553
TIME...MOT...LOC 0919Z 250DEG 34KT 4351 7549 

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

Apffel

518 
WWUS51 KBUF 080931
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
531 AM EDT SAT JUL 8 2017

NYC049-080941-
/O.CAN.KBUF.SV.W.0070.000000T0000Z-170708T0945Z/
Lewis NY-
531 AM EDT SAT JUL 8 2017

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LEWIS COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been cancelled.

LAT...LON 4356 7564 4372 7532 4358 7519 4342 7553
TIME...MOT...LOC 0929Z 241DEG 24KT 4355 7539 

$$

Apffel

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 9:51 PM EDT	Special Marine Warning	BUF		54 min
Jul 8, 1:49 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Wyoming	41 min
Jul 8, 2:28 AM EDT	Special Weather Statement	BUF	Monroe	47 min
Jul 8, 3:33 AM EDT	Special Weather Statement	BUF	Jefferson	27 min
Jul 8, 3:42 AM EDT	Special Marine Warning	BUF		63 min
Jul 8, 4:11 AM EDT	Special Weather Statement	BUF	Oswego	49 min
Jul 8, 4:51 AM EDT	Beach Hazards Statement	BUF	Cayuga, Oswego, Wayne	18 hr
Jul 8, 4:51 AM EDT	Lakeshore Flood Warning	BUF	Cayuga, Jefferson, Oswego, Wayne	36 hr
Jul 8, 4:53 AM EDT	Small Craft Advisory	BUF		39 hr
Jul 8, 5:37 AM EDT	Special Weather Statement	BUF	St. Lawrence	23 min
Jul 8, 7:47 AM EDT	Special Weather Statement	BUF	Allegany	58 min
Jul 8, 7:58 AM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	47 min
Jul 8, 8:41 AM EDT	Special Weather Statement	BUF	Livingston	49 min
Jul 8, 2:51 PM EDT	Special Marine Warning	BUF		84 min
Jul 8, 3:12 PM EDT	Special Weather Statement	BUF	Jefferson	48 min
Jul 8, 3:59 PM EDT	Special Weather Statement	BUF	Jefferson	46 min
Jul 8, 4:43 PM EDT	Special Weather Statement	BUF	Lewis	32 min

Nearby

Severe Thunderstorm Warnings in New York, 2017 Every severe thunderstorm warning in 2017

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.