Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 86, NWS Buffalo, NY

September 2, 2013Chautauqua County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 2, 2013, 12:13 PM EDT for Chautauqua County, New York. It was in force for 32 min. 1 report 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, 2013, 12:13 PM EDT (16:13 UTC)
Expired: Sep 2, 2013, 12:45 PM EDT
In force: 32 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 95 km from the middle of the area, began a volume at 16:17 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	Remark
Sep 2, 12:25 PM EDT	HAIL 1	Chautauqua, NY	ESTIMATED QUARTER SIZED HAIL AT THE CHAUTAUQUA INSTITUTION

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, 4.2 hours before the alert went out and 96 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: 1277 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

161 
WUUS51 KBUF 021613
SVRBUF
NYC013-021645-
/O.NEW.KBUF.SV.W.0086.130902T1613Z-130902T1645Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1213 PM EDT MON SEP 2 2013

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CHAUTAUQUA COUNTY IN WESTERN NEW YORK

* UNTIL 1245 PM EDT

* AT 1210 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
  WEST OF MAYVILLE...OR 19 MILES SOUTHWEST OF FREDONIA...AND MOVING
  EAST AT 30 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  MAYVILLE...
  CHAUTAUQUA INSTITUTE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4232 7966 4244 7919 4223 7911 4218 7965
      4230 7970
TIME...MOT...LOC 1612Z 254DEG 24KT 4225 7956

$$

WOOD

1 follow-up statement

563 
WWUS51 KBUF 021648
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1248 PM EDT MON SEP 2 2013

NYC013-021658-
/O.EXP.KBUF.SV.W.0086.000000T0000Z-130902T1645Z/
CHAUTAUQUA NY-
1248 PM EDT MON SEP 2 2013

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHAUTAUQUA COUNTY HAS
EXPIRED...

AT 1248 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.

LAT...LON 4232 7966 4244 7919 4223 7911 4218 7965
      4230 7970
TIME...MOT...LOC 1613Z 254DEG 24KT 4225 7955

$$

WOOD

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 1, 8:03 PM EDT	Special Weather Statement	BUF	Allegany	57 min
Sep 1, 10:40 PM EDT	Special Weather Statement	BUF	Wayne	65 min
Sep 1, 11:43 PM EDT	Special Weather Statement	BUF	Oswego	77 min
Sep 2, 12:20 AM EDT	Severe Thunderstorm Warning	BUF	Lewis, Oswego	55 min
Sep 2, 11:06 AM EDT	Special Marine Warning	BUF		54 min
Sep 2, 11:31 AM EDT	Special Marine Warning	BUF		44 min
Sep 2, 11:52 AM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	23 min
Sep 2, 12:39 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	36 min
Sep 2, 12:51 PM EDT	Special Weather Statement	BUF	Cayuga	39 min
Sep 2, 1:11 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	34 min
Sep 2, 1:28 PM EDT	Special Weather Statement	BUF	Genesee	62 min
Sep 2, 1:35 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe, Ontario, Wyoming	55 min
Sep 2, 2:01 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga	29 min
Sep 2, 2:14 PM EDT	Special Weather Statement	BUF	Cattaraugus	61 min
Sep 2, 2:37 PM EDT	Special Marine Warning	BUF		38 min
Sep 2, 2:46 PM EDT	Special Weather Statement	BUF	Cayuga	29 min
Sep 2, 3:20 PM EDT	Special Marine Warning	BUF		85 min
Sep 2, 3:31 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	59 min
Sep 2, 3:45 PM EDT	Special Marine Warning	BUF		2 hr
Sep 2, 3:59 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	61 min
Sep 2, 4:15 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego, Wayne	60 min
Sep 2, 4:25 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	65 min
Sep 2, 4:31 PM EDT	Severe Thunderstorm Warning	BUF	Wayne	59 min
Sep 2, 4:32 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego	43 min
Sep 2, 4:36 PM EDT	Flash Flood Warning	BUF	Cayuga, Oswego	3 hr
Sep 2, 4:39 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	51 min
Sep 2, 4:57 PM EDT	Severe Thunderstorm Warning	BUF	Lewis, Oswego	33 min
Sep 2, 4:59 PM EDT	Special Marine Warning	BUF		61 min
Sep 2, 5:24 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	36 min
Sep 2, 5:35 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	25 min
Sep 2, 5:36 PM EDT	Areal Flood Advisory	BUF	Lewis	3 hr
Sep 2, 6:24 PM EDT	Small Craft Advisory	BUF		61 hr

Nearby

Severe Thunderstorm Warnings in New York, 2013 Every severe thunderstorm warning in 2013

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.