Alert archive / New York / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 99, NWS Buffalo, NY

September 28, 2009Monroe County, Ontario County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 28, 2009, 1:08 PM EDT for Monroe County, Ontario County, Wayne County, New York. It was in force for 52 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 28, 2009, 1:08 PM EDT (17:08 UTC)
Expired: Sep 28, 2009, 2:00 PM EDT
In force: 52 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Monroe County, NY, Ontario County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 132 km from the middle of the area, began a volume at 17:10 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 28, 11:35 AM EDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 5.1 hours before the alert went out and 136 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: 765 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 234 m²/s²
0-3 km storm-relative helicity: 269 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.

000 
WUUS51 KBUF 281708
SVRBUF
NYC055-069-117-281800-
/O.NEW.KBUF.SV.W.0099.090928T1708Z-090928T1800Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
108 PM EDT MON SEP 28 2009

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL MONROE COUNTY IN WESTERN NEW YORK
  ONTARIO COUNTY IN WESTERN NEW YORK
  WAYNE COUNTY IN WESTERN NEW YORK

* UNTIL 200 PM EDT

* AT 106 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 ONTARIO TO 7 MILES NORTH OF VICTOR TO 11 MILES WEST OF
  BRISTOL...AND MOVING EAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  VICTOR BY 115 PM EDT...
  WILLIAMSON BY 120 PM EDT...
  MARION...BRISTOL AND SODUS BY 125 PM EDT...
  NEWARK AND CANANDAIGUA BY 135 PM EDT...
  CLIFTON SPRINGS BY 140 PM EDT...
  PHELPS AND LYONS BY 145 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4279 7752 4327 7736 4330 7715 4328 7704
      4329 7698 4328 7697 4331 7691 4332 7679
      4335 7672 4301 7683 4300 7696 4287 7695
      4286 7696 4278 7697
TIME...MOT...LOC 1707Z 260DEG 35KT 4326 7729 4309 7738
          4283 7764

$$

TMA

2 follow-up statements

000 
WWUS51 KBUF 281739
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
139 PM EDT MON SEP 28 2009

NYC055-281749-
/O.CAN.KBUF.SV.W.0099.000000T0000Z-090928T1800Z/
MONROE NY-
139 PM EDT MON SEP 28 2009

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM EDT MONDAY
AFTERNOON FOR WESTERN NEW YORK.

LAT...LON 4279 7752 4328 7719 4330 7715 4328 7704
      4329 7698 4328 7697 4331 7689 4332 7679
      4335 7672 4301 7683 4300 7696 4287 7695
      4286 7696 4278 7697
TIME...MOT...LOC 1739Z 257DEG 32KT 4332 7696 4313 7708
          4276 7743

$$

NYC069-117-281800-
/O.CON.KBUF.SV.W.0099.000000T0000Z-090928T1800Z/
ONTARIO NY-WAYNE NY-
139 PM EDT MON SEP 28 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM EDT
FOR WAYNE AND NORTHERN ONTARIO COUNTIES...

AT 139 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 SODUS POINT TO MARION TO 6 MILES SOUTH OF 
BRISTOL...MOVING EAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  NEWARK BY 145 PM EDT...
  COTTAGE CITY AND CLIFTON SPRINGS BY 150 PM EDT...
  PORT BAY AND NORTH ROSE AND PHELPS BY 155 PM EDT...
  GORHAM AND CLYDE AND GENEVA BY 200 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM EDT MONDAY
AFTERNOON FOR WESTERN NEW YORK.

&&

LAT...LON 4279 7752 4328 7719 4330 7715 4328 7704
      4329 7698 4328 7697 4331 7689 4332 7679
      4335 7672 4301 7683 4300 7696 4287 7695
      4286 7696 4278 7697
TIME...MOT...LOC 1739Z 257DEG 32KT 4332 7696 4313 7708
          4276 7743

$$

ZAFF

000 
WWUS51 KBUF 281800
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
200 PM EDT MON SEP 28 2009

NYC069-117-281810-
/O.EXP.KBUF.SV.W.0099.000000T0000Z-090928T1800Z/
ONTARIO NY-WAYNE NY-
200 PM EDT MON SEP 28 2009

...THE SEVERE THUNDERSTORM WARNING FOR WAYNE AND NORTHERN ONTARIO
COUNTIES HAS EXPIRED...

AT 200 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED THE WARNED AREA...
THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 PM EDT MONDAY
AFTERNOON FOR WESTERN NEW YORK.

LAT...LON 4279 7752 4328 7719 4330 7715 4328 7704
      4329 7698 4328 7697 4331 7689 4332 7679
      4335 7672 4301 7683 4300 7696 4287 7695
      4286 7696 4278 7697
TIME...MOT...LOC 1739Z 257DEG 32KT 4332 7696 4313 7708
          4276 7743

$$

ZAFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 28, 10:07 AM EDT	Special Marine Warning	BUF		83 min
Sep 28, 10:37 AM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	68 min
Sep 28, 10:59 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	61 min
Sep 28, 11:09 AM EDT	Lakeshore Flood Warning	BUF	Erie	5 hr
Sep 28, 11:26 AM EDT	Special Marine Warning	BUF		64 min
Sep 28, 12:10 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Ontario, Orleans, Wayne and 1 more	65 min
Sep 28, 12:25 PM EDT	Special Marine Warning	BUF		65 min
Sep 28, 1:18 PM EDT	Special Marine Warning	BUF		57 min
Sep 28, 1:23 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee	37 min
Sep 28, 1:47 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Jefferson, Oswego, Wayne	58 min
Sep 28, 1:58 PM EDT	Special Marine Warning	BUF		2 hr
Sep 28, 2:01 PM EDT	Special Marine Warning	BUF		59 min
Sep 28, 2:08 PM EDT	Special Marine Warning	BUF		37 min
Sep 28, 2:19 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans	41 min
Sep 28, 4:06 PM EDT	Lakeshore Flood Statement	BUF	Erie	10 hr
Sep 28, 5:06 PM EDT	Areal Flood Advisory	BUF	Erie, Niagara	3 hr
Sep 28, 5:24 PM EDT	Severe Thunderstorm Warning	BUF	Erie	51 min
Sep 28, 5:57 PM EDT	Severe Thunderstorm Warning	BUF	Erie	33 min
Sep 28, 6:26 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Orleans	49 min
Sep 28, 7:43 PM EDT	Areal Flood Warning	BUF	Cattaraugus, Chautauqua, Erie, Genesee, Wyoming	6 hr

Nearby

Severe Thunderstorm Warnings in New York, 2009 Every severe thunderstorm warning in 2009

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.