Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 54, NWS Buffalo, NY

August 5, 2012Cattaraugus County, Chautauqua County, Erie County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 5, 2012, 12:55 PM EDT for Cattaraugus County, Chautauqua County, Erie County, New York. It was in force for 50 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: Aug 5, 2012, 12:55 PM EDT (16:55 UTC)
Expired: Aug 5, 2012, 1:45 PM EDT
In force: 50 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY

The radar

The Buffalo radar (KBUF), 60 km from the middle of the area, began a volume at 16:57 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
Aug 5, 1:04 PM EDT	TSTM WND GST 59	Dunkirk, NY	WIND GUST 59 MPH

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
Aug 5, 12:42 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 4.9 hours before the alert went out and 61 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: 128 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1179 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 177 m²/s²
0-3 km storm-relative helicity: 142 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

943 
WUUS51 KBUF 051655
SVRBUF
NYC009-013-029-051745-
/O.NEW.KBUF.SV.W.0054.120805T1655Z-120805T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1255 PM EDT SUN AUG 5 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CATTARAUGUS COUNTY IN WESTERN NEW YORK
  NORTHERN CHAUTAUQUA COUNTY IN WESTERN NEW YORK
  SOUTHWESTERN ERIE COUNTY IN WESTERN NEW YORK

* UNTIL 145 PM EDT

* AT 1252 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 14 MILES NORTHWEST OF DUNKIRK TO 11 MILES SOUTHWEST OF
  FREDONIA...AND MOVING EAST AT 45 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  DUNKIRK...
  SILVER CREEK...
  LAKE ERIE BEACH...
  DERBY...
  COLLINS...
  PERRYSBURG...
  GOWANDA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4242 7946 4250 7935 4256 7916 4271 7904
      4271 7899 4274 7895 4275 7890 4233 7886
      4234 7957 4236 7957
TIME...MOT...LOC 1655Z 250DEG 39KT 4266 7948 4235 7945

$$

ZAFF

2 follow-up statements

676 
WWUS51 KBUF 051720
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
120 PM EDT SUN AUG 5 2012

NYC009-013-029-051745-
/O.CON.KBUF.SV.W.0054.000000T0000Z-120805T1745Z/
CATTARAUGUS NY-CHAUTAUQUA NY-ERIE NY-
120 PM EDT SUN AUG 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM EDT
FOR SOUTHWESTERN ERIE...NORTHEASTERN CHAUTAUQUA AND EXTREME
NORTHWESTERN CATTARAUGUS COUNTIES...

AT 115 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 9 MILES NORTHWEST OF STURGEON POINT TO SILVER 
CREEK...MOVING EAST AT 55 MPH.

SOME LOCATIONS IN THE WARNING INCLUDE...
  STURGEON POINT...
  COLLINS...
  EDEN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4249 7927 4253 7927 4256 7916 4258 7915
      4258 7914 4271 7904 4271 7899 4274 7895
      4275 7890 4247 7887
TIME...MOT...LOC 1720Z 248DEG 46KT 4281 7909 4250 7906

$$

ZAFF

332 
WWUS51 KBUF 051739
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
139 PM EDT SUN AUG 5 2012

NYC009-013-029-051748-
/O.EXP.KBUF.SV.W.0054.000000T0000Z-120805T1745Z/
CATTARAUGUS NY-CHAUTAUQUA NY-ERIE NY-
139 PM EDT SUN AUG 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHWESTERN 
ERIE...NORTHEASTERN CHAUTAUQUA AND EXTREME NORTHWESTERN CATTARAUGUS 
COUNTIES WILL EXPIRE AT 145 PM EDT...

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE
STILL POSSIBLE FROM THE THUNDERSTORM.

SEVERE THUNDERSTORM WARNINGS ARE STILL IN EFFECT FOR OTHER PORTIONS 
OF ERIE COUNTY.  

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

LAT...LON 4249 7927 4253 7927 4256 7916 4258 7915
      4258 7914 4271 7904 4271 7899 4274 7895
      4275 7890 4247 7887
TIME...MOT...LOC 1738Z 248DEG 46KT 4289 7880 4258 7877

$$

ZAFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 11:53 AM EDT	Special Marine Warning	BUF		2 hr
Aug 5, 1:24 PM EDT	Severe Thunderstorm Warning	BUF	Erie	51 min
Aug 5, 1:36 PM EDT	Severe Thunderstorm Warning	BUF	Erie	39 min
Aug 5, 1:56 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	49 min
Aug 5, 2:12 PM EDT	Severe Thunderstorm Warning	BUF	Genesee	28 min
Aug 5, 2:27 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Wyoming	33 min
Aug 5, 2:34 PM EDT	Special Marine Warning	BUF		56 min
Aug 5, 2:40 PM EDT	Severe Thunderstorm Warning	BUF	Wayne	50 min
Aug 5, 2:44 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	21 min
Aug 5, 2:54 PM EDT	Special Marine Warning	BUF		96 min
Aug 5, 2:57 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Ontario	33 min
Aug 5, 3:11 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego	64 min
Aug 5, 3:42 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis, Oswego	63 min
Aug 5, 3:49 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	26 min
Aug 5, 3:57 PM EDT	Flash Flood Warning	BUF	Jefferson	111 min
Aug 5, 4:11 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	49 min
Aug 5, 4:13 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	32 min
Aug 5, 4:32 PM EDT	Areal Flood Advisory	BUF	Jefferson	77 min
Aug 5, 7:04 PM EDT	Special Weather Statement	BUF	Monroe	56 min

Nearby

Severe Thunderstorm Warnings in New York, 2012 Every severe thunderstorm warning in 2012

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.