Alert archive / New York / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 22, NWS Buffalo, NY

June 26, 2009Monroe County, Orleans County, Wayne County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 26, 2009, 12:41 PM EDT for Monroe County, Orleans County, Wayne County, New York. It was in force for 64 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: Jun 26, 2009, 12:41 PM EDT (16:41 UTC)
Expired: Jun 26, 2009, 1:45 PM EDT
In force: 64 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Monroe County, NY, Orleans County, NY, Wayne County, NY

The radar

The Buffalo radar (KBUF), 99 km from the middle of the area, began a volume at 16:44 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
Jun 26, 12:45 PM EDT	HAIL 0.75	N Brockport, NY
Jun 26, 12:45 PM EDT	HAIL 1.5	5 W Brockport, NY
Jun 26, 12:53 PM EDT	HAIL 0.75	Brockport, NY
Jun 26, 1:00 PM EDT	MARINE TSTM WIND 41	3 Nnw Irondequoit, NY
Jun 26, 1:08 PM EDT	HAIL 1	Greece, NY

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
Jun 26, 12:32 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 4.7 hours before the alert went out and 97 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: 974 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 717 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 96 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 261641
SVRBUF
NYC055-073-117-261745-
/O.NEW.KBUF.SV.W.0022.090626T1641Z-090626T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1241 PM EDT FRI JUN 26 2009

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MONROE COUNTY IN WESTERN NEW YORK
  EAST CENTRAL ORLEANS COUNTY IN WESTERN NEW YORK
  NORTHWESTERN WAYNE COUNTY IN WESTERN NEW YORK

* UNTIL 145 PM EDT

* AT 1240 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  HOLLEY...OR 6 MILES NORTHWEST OF BROCKPORT...AND MOVING EAST AT 35
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BROCKPORT BY 1250 PM EDT...
  HILTON BY 105 PM EDT...
  GREECE BY 110 PM EDT...
  IRONDEQUOIT BY 120 PM EDT...
  WEBSTER BY 135 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT FRIDAY
EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4330 7767 4328 7762 4325 7758 4326 7747
      4328 7740 4329 7731 4328 7729 4319 7737
      4321 7806 4329 7808 4334 7772
TIME...MOT...LOC 1641Z 269DEG 29KT 4326 7804

$$

ZAFF

2 follow-up statements

000 
WWUS51 KBUF 261718
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
118 PM EDT FRI JUN 26 2009

NYC073-261728-
/O.CAN.KBUF.SV.W.0022.000000T0000Z-090626T1745Z/
ORLEANS NY-
118 PM EDT FRI JUN 26 2009

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

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT FRIDAY
EVENING FOR WESTERN NEW YORK.

LAT...LON 4328 7762 4325 7758 4326 7747 4328 7740
      4329 7731 4328 7729 4319 7737 4320 7766
TIME...MOT...LOC 1718Z 269DEG 29KT 4326 7763

$$

NYC055-117-261745-
/O.CON.KBUF.SV.W.0022.000000T0000Z-090626T1745Z/
WAYNE NY-MONROE NY-
118 PM EDT FRI JUN 26 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM EDT
FOR EAST CENTRAL MONROE AND NORTHWESTERN WAYNE COUNTIES...

AT 117 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR IRONDEQUOIT...OR NEAR GREECE...MOVING EAST AT 35 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  IRONDEQUOIT BAY BY 125 PM EDT...
  WEBSTER BY 135 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING LARGE DAMAGING HAIL. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT FRIDAY
EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4328 7762 4325 7758 4326 7747 4328 7740
      4329 7731 4328 7729 4319 7737 4320 7766
TIME...MOT...LOC 1718Z 269DEG 29KT 4326 7763

$$

ZAFF

000 
WWUS51 KBUF 261739
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
139 PM EDT FRI JUN 26 2009

NYC055-117-261749-
/O.EXP.KBUF.SV.W.0022.000000T0000Z-090626T1745Z/
WAYNE NY-MONROE NY-
139 PM EDT FRI JUN 26 2009

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MONROE AND
NORTHWESTERN WAYNE COUNTIES WILL EXPIRE AT 145 PM EDT...

AT 139 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 700 PM EDT FRIDAY
EVENING FOR WESTERN NEW YORK.

LAT...LON 4328 7762 4325 7758 4326 7747 4328 7740
      4329 7731 4328 7729 4319 7737 4320 7766
TIME...MOT...LOC 1739Z 269DEG 29KT 4326 7740

$$

ZAFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 8:01 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Erie, Wyoming	31 min
Jun 25, 8:10 PM EDT	Special Marine Warning	BUF		37 min
Jun 25, 8:14 PM EDT	Special Marine Warning	BUF		31 min
Jun 26, 5:43 AM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Wayne	62 min
Jun 26, 12:10 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Monroe	65 min
Jun 26, 12:17 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston	37 min
Jun 26, 12:28 PM EDT	Special Marine Warning	BUF		44 min
Jun 26, 12:50 PM EDT	Special Marine Warning	BUF		55 min
Jun 26, 1:06 PM EDT	Special Marine Warning	BUF		84 min
Jun 26, 1:09 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	66 min
Jun 26, 1:32 PM EDT	Flash Flood Warning	BUF	Monroe, Ontario, Wayne	3 hr
Jun 26, 1:34 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Monroe, Ontario, Wayne	56 min
Jun 26, 1:34 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	29 min
Jun 26, 1:47 PM EDT	Flash Flood Warning	BUF	Allegany	3 hr
Jun 26, 2:23 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario	67 min
Jun 26, 2:47 PM EDT	Special Marine Warning	BUF		88 min
Jun 26, 3:11 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	49 min
Jun 26, 3:46 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Oswego	31 min
Jun 26, 4:13 PM EDT	Special Marine Warning	BUF		30 min
Jun 26, 4:39 PM EDT	Flash Flood Warning	BUF	Wyoming	87 min
Jun 26, 5:27 PM EDT	Special Marine Warning	BUF		32 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.