Alert archive / New York / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 67, NWS Buffalo, NY

September 2, 2014Allegany County, Cattaraugus County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 2, 2014, 4:24 PM EDT for Allegany County, Cattaraugus County, New York. It was in force for 66 min. 5 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
Sep 2, 2014, 4:24 PM EDT (20:24 UTC)
Expired
Sep 2, 2014, 5:30 PM EDT
In force
66 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Allegany County, NY, Cattaraugus County, NY

The radar

The Buffalo radar (KBUF), 97 km from the middle of the area, began a volume at 20:27 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

TimeReportWhereRemark
Sep 2, 4:38 PM EDTTSTM WND DMGAllegany, NYNOLAN DR. TREES AND WIRES DOWN.
Sep 2, 4:44 PM EDTTSTM WND DMGOlean, NYTREE DOWN ON MAIN STREET.
Sep 2, 4:46 PM EDTTSTM WND DMGOlean, NYWEST RIVER SIDE DRIVE TREE DOWN.
Sep 2, 4:49 PM EDTTSTM WND DMGOlean, NYGARDEN AVE TREE AND WIRES DOWN.
Sep 2, 4:51 PM EDTTSTM WND DMGOlean, NYSOUTH BARRY ST. TREE AND WIRES DOWN ON A HOUSE.

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

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.4 hours before the alert went out and 94 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2014-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 459 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2014-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
459 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
678 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

144 
WUUS51 KBUF 022024
SVRBUF
NYC003-009-022130-
/O.NEW.KBUF.SV.W.0067.140902T2024Z-140902T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
424 PM EDT TUE SEP 2 2014

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ALLEGANY COUNTY IN WESTERN NEW YORK
  SOUTHEASTERN CATTARAUGUS COUNTY IN WESTERN NEW YORK

THIS ALSO INCLUDES INTERSTATE 86 BETWEEN EXITS 23 AND 33.

* UNTIL 530 PM EDT

* AT 422 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 10 MILES WEST OF ALLEGANY...OR 7
  MILES SOUTH OF SALAMANCA...AND MOVING EAST AT 30 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  ST. BONAVENTURE...
  OLEAN...
  WESTON MILLS...
  WELLSVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4199 7874 4228 7868 4241 7773 4199 7775
TIME...MOT...LOC 2024Z 264DEG 28KT 4207 7867

$$

THOMAS
2 follow-up statements
337 
WWUS51 KBUF 022107
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
507 PM EDT TUE SEP 2 2014

NYC003-009-022130-
/O.CON.KBUF.SV.W.0067.000000T0000Z-140902T2130Z/
ALLEGANY NY-CATTARAUGUS NY-
507 PM EDT TUE SEP 2 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR SOUTHEASTERN CATTARAUGUS AND ALLEGANY COUNTIES...

AT 503 PM EDT...LOCAL LAW ENFORCEMENT REPORTED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM
WAS LOCATED NEAR RICHBURG...OR 11 MILES EAST OF OLEAN...MOVING EAST
AT 30 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  RICHBURG...
  SCIO...
  WELLSVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS STORM HAS A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE ACROSS 
CATTARAUGUS COUNTY WITH SEVERAL REPORTS OF TREES DOWN. THIS IS AN 
EXTREMELY DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY 
STRUCTURE AND STAY AWAY FROM WINDOWS!

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR CENTRAL NEW YORK.

&&

LAT...LON 4199 7874 4228 7868 4241 7773 4199 7775
TIME...MOT...LOC 2105Z 264DEG 28KT 4211 7819

$$

THOMAS
576 
WWUS51 KBUF 022130
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
530 PM EDT TUE SEP 2 2014

NYC003-009-022140-
/O.EXP.KBUF.SV.W.0067.000000T0000Z-140902T2130Z/
ALLEGANY NY-CATTARAUGUS NY-
530 PM EDT TUE SEP 2 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CATTARAUGUS AND
ALLEGANY COUNTIES HAS EXPIRED...

AT 530 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO LONGER
SEVERE...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

LAT...LON 4199 7874 4228 7868 4241 7773 4199 7775
TIME...MOT...LOC 2130Z 264DEG 30KT 4212 7784

$$

THOMAS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 1, 9:45 PM EDTSmall Craft AdvisoryBUF18 hr
Sep 1, 11:25 PM EDTSpecial Marine WarningBUF65 min
Sep 1, 11:34 PM EDTSpecial Weather StatementBUFErie71 min
Sep 2, 2:28 PM EDTSpecial Weather StatementBUFLewis62 min
Sep 2, 2:59 PM EDTSpecial Weather StatementBUFWayne46 min
Sep 2, 3:34 PM EDTSpecial Weather StatementBUFOswego56 min
Sep 2, 5:15 PM EDTSpecial Weather StatementBUFOntario60 min

Nearby

Severe Thunderstorm Warnings in New York, 2014Every severe thunderstorm warning in 2014

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.