Alert archive / New York / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 78, NWS Buffalo, NY

August 10, 2009Cayuga County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 10, 2009, 4:13 PM EDT for Cayuga County, New York. It was in force for 20 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: Aug 10, 2009, 4:13 PM EDT (20:13 UTC)
Expired: Aug 10, 2009, 4:33 PM EDT
In force: 20 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Cayuga County, NY

The radar

The Ft Drum radar (KTYX), 104 km from the middle of the area, began a volume at 20:14 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
Aug 10, 3:13 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 8.2 hours before the alert went out and 171 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: 326 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 980 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 102013
SVRBUF
NYC011-102115-
/O.NEW.KBUF.SV.W.0078.090810T2013Z-090810T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
413 PM EDT MON AUG 10 2009

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL CAYUGA COUNTY IN CENTRAL NEW YORK

* UNTIL 515 PM EDT

* AT 410 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED 5 MILES WEST OF
  CATO...OR 9 MILES NORTH OF MONTEZUMA...AND MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CATO BY 425 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INDOORS AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
MONDAY EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4306 7649 4304 7672 4307 7672 4309 7670
      4315 7671 4322 7671 4326 7650 4311 7648
TIME...MOT...LOC 2013Z 250DEG 19KT 4314 7666

$$

HITCHCOCK

1 follow-up statement

000 
WWUS51 KBUF 102033
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
433 PM EDT MON AUG 10 2009

NYC011-102042-
/O.CAN.KBUF.SV.W.0078.000000T0000Z-090810T2115Z/
CAYUGA NY-
433 PM EDT MON AUG 10 2009

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CAYUGA COUNTY IS
CANCELLED...

AT 432 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE 
THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND MOVED EAST 
OF THE AREA...THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM EDT
MONDAY EVENING FOR WESTERN NEW YORK.

LAT...LON 4306 7649 4304 7672 4307 7672 4309 7670
      4315 7671 4322 7671 4326 7650 4311 7648
TIME...MOT...LOC 2032Z 250DEG 19KT 4317 7653

$$

HITCHCOCK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 8:04 PM EDT	Flash Flood Warning	BUF	Wayne	3 hr
Aug 9, 8:41 PM EDT	Special Marine Warning	BUF		94 min
Aug 9, 8:58 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Monroe, Niagara, Orleans	92 min
Aug 9, 9:17 PM EDT	Flash Flood Warning	BUF	Cayuga, Wayne	3 hr
Aug 9, 9:28 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans, Wyoming	77 min
Aug 9, 9:44 PM EDT	Special Marine Warning	BUF		91 min
Aug 9, 10:08 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Ontario, Wyoming	67 min
Aug 9, 10:19 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Wyoming	71 min
Aug 9, 10:28 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Ontario, Wayne	65 min
Aug 9, 10:50 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Ontario and 1 more	70 min
Aug 9, 10:59 PM EDT	Flash Flood Warning	BUF	Wayne	64 min
Aug 9, 11:18 PM EDT	Special Marine Warning	BUF		57 min
Aug 9, 11:26 PM EDT	Flash Flood Warning	BUF	Allegany, Cattaraugus, Chautauqua, Erie	3 hr
Aug 10, 12:01 AM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Chautauqua	59 min
Aug 10, 12:56 AM EDT	River Flood Warning	BUF	Cattaraugus, Chautauqua, Erie, Wyoming	13 hr
Aug 10, 3:18 AM EDT	River Flood Warning	BUF	Erie	10 hr
Aug 10, 4:25 AM EDT	Flash Flood Watch	BUF	Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 7 more	17 hr
Aug 10, 4:40 AM EDT	Small Craft Advisory	BUF		10 hr
Aug 10, 5:15 AM EDT	Flash Flood Warning	BUF	Genesee, Niagara, Orleans	109 min
Aug 10, 6:02 AM EDT	Flash Flood Warning	BUF	Genesee, Livingston, Monroe, Ontario, Orleans, Wayne	109 min
Aug 10, 6:38 AM EDT	Special Marine Warning	BUF		52 min
Aug 10, 6:43 AM EDT	Flash Flood Warning	BUF	Chautauqua	3 hr
Aug 10, 9:33 AM EDT	River Flood Warning	BUF	Erie, Wyoming	4 hr
Aug 10, 2:40 PM EDT	Severe Thunderstorm Warning	BUF	Ontario, Wayne	55 min
Aug 10, 2:52 PM EDT	Flash Flood Warning	BUF	Chautauqua	76 min
Aug 10, 3:17 PM EDT	Severe Thunderstorm Warning	BUF	Wayne	58 min
Aug 10, 3:46 PM EDT	Areal Flood Advisory	BUF	Wayne	6 hr
Aug 10, 4:50 PM EDT	Severe Thunderstorm Warning	BUF	Niagara	30 min
Aug 10, 5:08 PM EDT	Flash Flood Warning	BUF	Niagara	45 min
Aug 10, 5:12 PM EDT	Special Marine Warning	BUF		40 min
Aug 10, 5:45 PM EDT	Special Marine Warning	BUF		99 min
Aug 10, 6:21 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Wayne	54 min
Aug 10, 6:50 PM EDT	Severe Thunderstorm Warning	BUF	Wayne	55 min
Aug 10, 7:00 PM EDT	Special Marine Warning	BUF		43 min
Aug 10, 7:08 PM EDT	Flash Flood Warning	BUF	Wayne	3 hr
Aug 10, 7:41 PM EDT	Flash Flood Warning	BUF	Cayuga	3 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.