Alert archive / New York / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 63, NWS Buffalo, NY

September 9, 2015Allegany County, Livingston County, Ontario County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 9, 2015, 1:03 PM EDT for Allegany County, Livingston County, Ontario County, New York. It was in force for 42 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
Sep 9, 2015, 1:03 PM EDT (17:03 UTC)
Expired
Sep 9, 2015, 1:45 PM EDT
In force
42 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

Counties Allegany County, NY, Livingston County, NY, Ontario County, NY

The radar

The Buffalo radar (KBUF), 95 km from the middle of the area, began a volume at 17:06 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 5.1 hours before the alert went out and 92 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 2015-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 252 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 2015-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 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
252 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
1035 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
70 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.

585 
WUUS51 KBUF 091703
SVRBUF
NYC003-051-069-091745-
/O.NEW.KBUF.SV.W.0063.150909T1703Z-150909T1745Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
103 PM EDT WED SEP 9 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN ONTARIO COUNTY IN WESTERN NEW YORK...
  SOUTHEASTERN LIVINGSTON COUNTY IN WESTERN NEW YORK...
  NORTHEASTERN ALLEGANY COUNTY IN WESTERN NEW YORK...

* UNTIL 145 PM EDT

* AT 101 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED NEAR DANSVILLE...AND MOVING EAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DANSVILLE...NAPLES...GROVELAND...SPRINGWATER...OSSIAN...
  CANASERAGA...HUNT HOLLOW AND OSSIAN CENTER.

THIS INCLUDES INTERSTATE 390 BETWEEN EXITS 4 AND 5.
 
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.

&&

LAT...LON 4267 7788 4267 7737 4258 7737 4258 7766
      4253 7766 4253 7772 4247 7772 4247 7791
TIME...MOT...LOC 1701Z 275DEG 37KT 4256 7779 

$$

MITCHELL
2 follow-up statements
359 
WWUS51 KBUF 091723
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
123 PM EDT WED SEP 9 2015

NYC003-051-069-091745-
/O.CON.KBUF.SV.W.0063.000000T0000Z-150909T1745Z/
ONTARIO NY-LIVINGSTON NY-ALLEGANY NY-
123 PM EDT WED SEP 9 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM EDT
FOR SOUTHWESTERN ONTARIO...SOUTHEASTERN LIVINGSTON AND NORTHEASTERN
ALLEGANY COUNTIES...

AT 122 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR WAYLAND...OR 10 MILES EAST OF DANSVILLE...MOVING EAST AT
40 MPH.

LOCATIONS IMPACTED INCLUDE...
DANSVILLE...NAPLES...GROVELAND...SPRINGWATER...OSSIAN...CANASERAGA...
HUNT HOLLOW AND OSSIAN CENTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL... 
DEADLY LIGHTNING AND VERY HEAVY RAIN. THIS STORM HAS A HISTORY OF 
PRODUCING WIND DAMAGE. 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.

&&

LAT...LON 4267 7788 4267 7737 4258 7737 4258 7766
      4253 7766 4253 7772 4247 7772 4247 7791
TIME...MOT...LOC 1722Z 272DEG 33KT 4260 7750 

$$

MITCHELL
269 
WWUS51 KBUF 091744
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
144 PM EDT WED SEP 9 2015

NYC003-051-069-091754-
/O.EXP.KBUF.SV.W.0063.000000T0000Z-150909T1745Z/
ONTARIO NY-LIVINGSTON NY-ALLEGANY NY-
144 PM EDT WED SEP 9 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN ONTARIO...
SOUTHEASTERN LIVINGSTON AND NORTHEASTERN ALLEGANY COUNTIES WILL
EXPIRE AT 145 PM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4267 7788 4267 7737 4258 7737 4258 7766
      4253 7766 4253 7772 4247 7772 4247 7791
TIME...MOT...LOC 1741Z 275DEG 37KT 4260 7750 

$$

WOOD

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 9, 10:26 AM EDTSpecial Weather StatementBUFMonroe49 min
Sep 9, 10:36 AM EDTSpecial Marine WarningBUF54 min
Sep 9, 11:19 AM EDTSpecial Marine WarningBUF56 min
Sep 9, 11:43 AM EDTSevere Thunderstorm WarningBUFCayuga, Oswego62 min
Sep 9, 12:14 PM EDTSevere Thunderstorm WarningBUFAllegany, Livingston, Wyoming46 min
Sep 9, 12:39 PM EDTSevere Thunderstorm WarningBUFLivingston, Ontario51 min
Sep 9, 12:43 PM EDTSevere Thunderstorm WarningBUFLewis, Oswego62 min
Sep 9, 1:45 PM EDTSevere Thunderstorm WarningBUFLewis14 min
Sep 9, 1:47 PM EDTSpecial Weather StatementBUFCattaraugus43 min
Sep 9, 6:24 PM EDTSmall Craft AdvisoryBUF9 hr

Nearby

Severe Thunderstorm Warnings in New York, 2015Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.