Alert archive / New York / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 15, NWS Buffalo, NY

May 30, 2015Jefferson County, Lewis County, Oswego County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at May 30, 2015, 5:39 PM EDT for Jefferson County, Lewis County, Oswego County, New York. It was in force for 66 min. 6 reports 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: May 30, 2015, 5:39 PM EDT (21:39 UTC)
Expired: May 30, 2015, 6:45 PM EDT
In force: 66 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Jefferson County, NY, Lewis County, NY, Oswego County, NY

The radar

The Ft Drum radar (KTYX), 48 km from the middle of the area, began a volume at 21:40 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
May 30, 5:41 PM EDT	TSTM WND DMG	Palermo, NY	TREE FELL THROUGH A TRAILER HOME AT 36 SUNDOWN ROAD.
May 30, 5:41 PM EDT	TSTM WND DMG	Palermo, NY	TREE ON WIRES ON SUNDOWN ROAD.
May 30, 5:45 PM EDT	TSTM WND DMG	New Haven, NY	TREE BLOCKING ROADWAY NEAR THE INTERSECTION OF HANSON AND JOHNSON ROADS.
May 30, 5:45 PM EDT	TSTM WND DMG	New Haven, NY	TREE DOWN ON SOPER MILLS ROAD.
May 30, 5:47 PM EDT	TSTM WND DMG	Mexico, NY	TREES AND WIRES DOWN.
May 30, 5:50 PM EDT	TSTM WND DMG	Mexico, NY	TREE BLOCKING ROADWAY ON COUNTY ROUTE 41.

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 12:00Z, 9.7 hours before the alert went out and 211 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: 1150 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 203 m²/s²
0-3 km storm-relative helicity: 210 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

940 
WUUS51 KBUF 302139
SVRBUF
NYC045-049-075-302245-
/O.NEW.KBUF.SV.W.0015.150530T2139Z-150530T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
539 PM EDT SAT MAY 30 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL LEWIS COUNTY IN CENTRAL NEW YORK...
  CENTRAL OSWEGO COUNTY IN CENTRAL NEW YORK...
  SOUTH CENTRAL JEFFERSON COUNTY IN CENTRAL NEW YORK...

* UNTIL 645 PM EDT

* AT 537 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED NEAR BATTLE ISLAND STATE PARK...
  OR NEAR FULTON...AND MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  FULTON...PULASKI...BARNES CORNERS... SELKIRK SHORES STATE PARK...
  MEXICO POINT STATE PARK...HASTINGS AND VOLNEY.

THIS INCLUDES INTERSTATE 81 BETWEEN EXITS 33 AND 38.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

&&

LAT...LON 4325 7633 4338 7650 4352 7631 4351 7629
      4354 7622 4360 7620 4388 7581 4368 7557
TIME...MOT...LOC 2137Z 227DEG 34KT 4338 7633 

$$

MITCHELL

2 follow-up statements

633 
WWUS51 KBUF 302220
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
620 PM EDT SAT MAY 30 2015

NYC045-049-075-302245-
/O.CON.KBUF.SV.W.0015.000000T0000Z-150530T2245Z/
LEWIS NY-OSWEGO NY-JEFFERSON NY-
620 PM EDT SAT MAY 30 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR WEST CENTRAL LEWIS...NORTHEASTERN OSWEGO AND SOUTH CENTRAL
JEFFERSON COUNTIES...

AT 619 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 
MPH. THIS STORM WAS LOCATED 9 MILES SOUTH OF BARNES CORNERS...MOVING 
NORTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
PULASKI...BARNES CORNERS...RICHLAND...ORWELL...LORRAINE...SANDY
CREEK...LACONA AND ALTMAR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 4345 7598 4360 7620 4388 7581 4368 7557
TIME...MOT...LOC 2219Z 230DEG 41KT 4369 7580 

$$

RSH

507 
WWUS51 KBUF 302243
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
643 PM EDT SAT MAY 30 2015

NYC045-049-075-302250-
/O.EXP.KBUF.SV.W.0015.000000T0000Z-150530T2245Z/
LEWIS NY-OSWEGO NY-JEFFERSON NY-
643 PM EDT SAT MAY 30 2015

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL LEWIS...
NORTHEASTERN OSWEGO AND SOUTH CENTRAL JEFFERSON COUNTIES WILL EXPIRE
AT 645 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 GUSTY WINDS
AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
BUFFALO.

LAT...LON 4345 7598 4360 7620 4388 7581 4368 7557
TIME...MOT...LOC 2231Z 227DEG 34KT 4369 7580 

$$

RSH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 29, 10:20 PM EDT	Small Craft Advisory	BUF		22 hr
May 30, 4:42 AM EDT	Small Craft Advisory	BUF		54 hr
May 30, 4:15 PM EDT	Special Weather Statement	BUF	Lewis	45 min
May 30, 4:16 PM EDT	Special Weather Statement	BUF	Allegany, Cattaraugus, Livingston, Ontario	89 min
May 30, 4:27 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	63 min
May 30, 5:04 PM EDT	Special Weather Statement	BUF	Wayne, Wyoming	56 min
May 30, 5:14 PM EDT	Special Marine Warning	BUF		61 min
May 30, 5:16 PM EDT	Special Weather Statement	BUF	Lewis	29 min
May 30, 5:47 PM EDT	Flash Flood Warning	BUF	Genesee, Livingston, Wyoming	3 hr
May 30, 7:50 PM EDT	Special Weather Statement	BUF	Allegany, Cattaraugus, Chautauqua	85 min

Nearby

Severe Thunderstorm Warnings in New York, 2015 Every severe thunderstorm warning in 2015

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.