Alert archive / New York / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 52, NWS Buffalo, NY

August 4, 2012Niagara County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 4, 2012, 6:59 PM EDT for Niagara County, New York. It was in force for 31 min. 2 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: Aug 4, 2012, 6:59 PM EDT (22:59 UTC)
Expired: Aug 4, 2012, 7:30 PM EDT
In force: 31 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon

County Niagara County, NY

The radar

The Buffalo radar (KBUF), 42 km from the middle of the area, began a volume at 22:59 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 4, 7:00 PM EDT	TSTM WND DMG	5 N Lockport, NY	TREE LIMBS AND WIRES DOWN IN NEWFANE
Aug 4, 7:40 PM EDT	TSTM WND DMG	5 N Lockport, NY	TREES DOWN ON IDE ROAD NEAR COOMER IN NEWFANE

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, 11.0 hours before the alert went out and 44 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: 1202 J/kg
Mixed-layer CIN: -101 J/kg
Mixed-layer LCL: 1236 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 32 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

485 
WUUS51 KBUF 042259
SVRBUF
NYC063-042330-
/O.NEW.KBUF.SV.W.0052.120804T2259Z-120804T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
659 PM EDT SAT AUG 4 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

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

* UNTIL 730 PM EDT

* AT 655 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED NEAR NEWFANE...OR 7 MILES NORTH
  OF LOCKPORT...AND MOVING NORTH AT 25 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  OLCOTT...

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 4335 7873 4337 7863 4337 7860 4336 7860
      4323 7869 4324 7878 4333 7879
TIME...MOT...LOC 2259Z 191DEG 22KT 4330 7871

$$

RSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 3:54 AM EDT	Heat Advisory	BUF	Cayuga, Erie, Genesee, Jefferson, Livingston, Monroe and 5 more	16 hr
Aug 4, 3:59 AM EDT	Small Craft Advisory	BUF		54 hr
Aug 4, 6:07 PM EDT	Special Weather Statement	BUF	Allegany, Cattaraugus	68 min
Aug 4, 6:41 PM EDT	Special Weather Statement	BUF	Niagara	49 min
Aug 4, 6:45 PM EDT	Special Marine Warning	BUF		60 min
Aug 4, 7:29 PM EDT	Severe Thunderstorm Warning	BUF	Niagara	31 min
Aug 4, 7:34 PM EDT	Areal Flood Advisory	BUF	Niagara	3 hr
Aug 4, 7:40 PM EDT	Special Marine Warning	BUF		65 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.