Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 72, NWS Buffalo, NY

July 19, 2013Jefferson County, Lewis County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jul 19, 2013, 8:58 PM EDT for Jefferson County, Lewis County, New York. It was in force for 32 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 19, 2013, 8:58 PM EDT (00:58 UTC)
Expired: Jul 19, 2013, 9:30 PM EDT
In force: 32 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Jefferson County, NY, Lewis County, NY

The radar

The Ft Drum radar (KTYX), 23 km from the middle of the area, began a volume at 00:59 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 19, 9:04 PM EDT	TSTM WND DMG	Greig, NY	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.

Issued	Product	Office	Lasted
Jul 19, 7:52 PM EDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 1.0 hours before the alert went out and 171 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: 749 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 1986 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

462 
WUUS51 KBUF 200058
SVRBUF
NYC045-049-200130-
/O.NEW.KBUF.SV.W.0072.130720T0058Z-130720T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
858 PM EDT FRI JUL 19 2013

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL JEFFERSON COUNTY IN CENTRAL NEW YORK
  LEWIS COUNTY IN CENTRAL NEW YORK

* UNTIL 930 PM EDT

* AT 855 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 6 MILES NORTHWEST OF CARTHAGE TO LOWVILLE TO 12 MILES  
  SOUTHWEST OF HIGHMARKET...AND MOVING EAST AT 45 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  INDIAN RIVER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SATURDAY MORNING FOR WESTERN NEW YORK.

&&

LAT...LON 4342 7551 4345 7571 4403 7568 4406 7516
      4405 7515 4362 7510
TIME...MOT...LOC 0058Z 278DEG 39KT 4404 7564 4373 7545
          4344 7565

$$

RSH

2 follow-up statements

369 
WWUS51 KBUF 200118 RRA
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
918 PM EDT FRI JUL 19 2013

NYC045-200127-
/O.CAN.KBUF.SV.W.0072.000000T0000Z-130720T0130Z/
JEFFERSON NY-
918 PM EDT FRI JUL 19 2013

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL JEFFERSON COUNTY
IS CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SATURDAY MORNING FOR WESTERN NEW YORK.

LAT...LON 4343 7550 4402 7548 4406 7516 4405 7515
      4362 7510
TIME...MOT...LOC 0117Z 278DEG 39KT 4401 7536 4370 7517
          4341 7537

$$

NYC049-200130-
/O.CON.KBUF.SV.W.0072.000000T0000Z-130720T0130Z/
LEWIS NY-
918 PM EDT FRI JUL 19 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR EASTERN LEWIS COUNTY...

AT 912 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM INDIAN RIVER TO 9 MILES NORTHEAST OF LYONS FALLS TO 10
MILES SOUTH OF CONSTABLEVILLE...OR ALONG A LINE EXTENDING FROM 17
MILES EAST OF FORT DRUM TO 16 MILES NORTH OF BOONVILLE TO 7 MILES
SOUTHWEST OF BOONVILLE...MOVING EAST AT 45 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  LOWVILLE...LYONS FALLS AND BEAVER FALLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!

WIND DAMAGE WITH THESE STORMS WILL OCCUR WELL AHEAD OF ANY RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SATURDAY MORNING FOR WESTERN NEW YORK.

&&

LAT...LON 4343 7550 4402 7548 4406 7516 4405 7515
      4362 7510
TIME...MOT...LOC 0117Z 278DEG 39KT 4401 7536 4370 7517
          4341 7537

$$

RSH

289 
WWUS51 KBUF 200134
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
934 PM EDT FRI JUL 19 2013

NYC049-200143-
/O.EXP.KBUF.SV.W.0072.000000T0000Z-130720T0130Z/
LEWIS NY-
934 PM EDT FRI JUL 19 2013

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN LEWIS COUNTY HAS
EXPIRED...

RADAR INDICATED THAT GUSTY WINDS TO 45 MPH OVER EASTERN LEWIS COUNTY 
WERE STILL POSSIBLE FROM NEARBY THUNDERSTORMS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SATURDAY MORNING FOR WESTERN NEW YORK.

LAT...LON 4343 7550 4402 7548 4406 7516 4405 7515
      4362 7510
TIME...MOT...LOC 0118Z 278DEG 39KT 4401 7534 4370 7515
          4341 7536

$$

RSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 8:01 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	59 min
Jul 19, 8:03 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	57 min
Jul 19, 8:20 PM EDT	Areal Flood Advisory	BUF	Erie, Genesee, Niagara, Orleans	3 hr
Jul 19, 8:32 PM EDT	Severe Thunderstorm Warning	BUF	Niagara	43 min
Jul 19, 8:49 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Wyoming	56 min
Jul 19, 8:51 PM EDT	Flash Flood Warning	BUF	Erie, Niagara	3 hr
Jul 19, 9:25 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	65 min
Jul 19, 9:49 PM EDT	Special Marine Warning	BUF		56 min
Jul 19, 9:56 PM EDT	Special Marine Warning	BUF		64 min
Jul 19, 10:06 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	54 min
Jul 19, 10:21 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Wyoming	54 min
Jul 19, 10:33 PM EDT	Areal Flood Advisory	BUF	Erie, Genesee, Wyoming	3 hr
Jul 19, 10:49 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Wyoming	56 min
Jul 20, 12:46 AM EDT	Special Marine Warning	BUF		59 min
Jul 20, 1:18 AM EDT	Areal Flood Advisory	BUF	Erie, Genesee, Niagara, Orleans	3 hr
Jul 20, 1:21 AM EDT	Special Marine Warning	BUF		84 min
Jul 20, 2:43 AM EDT	Special Weather Statement	BUF	Ontario	32 min
Jul 20, 3:45 AM EDT	Special Marine Warning	BUF		60 min
Jul 20, 4:02 AM EDT	Severe Thunderstorm Warning	BUF	Erie	43 min
Jul 20, 4:49 AM EDT	Small Craft Advisory	BUF		9 hr

Nearby

Severe Thunderstorm Warnings in New York, 2013 Every severe thunderstorm warning in 2013

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.