Alert archive / New York / Special Weather Statements in 2017

Special Weather Statement, NWS Buffalo, NY

July 20, 2017Erie County, New York

NWS Buffalo, NY issued this special weather statement at Jul 20, 2017, 1:44 PM EDT for Erie County, New York. It was in force for 31 min. 3 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
Jul 20, 2017, 1:44 PM EDT (17:44 UTC)
Expired
Jul 20, 2017, 2:15 PM EDT
In force
31 min
Issued by
NWS Buffalo, NY

County Erie County, NY

The radar

The Buffalo radar (KBUF), 40 km from the middle of the area, began a volume at 17:46 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

TimeReportWhereRemark
Jul 20, 2:02 PM EDTTSTM WND DMG2 Se Springville, NYTREE DOWN AT BEECH TREE RD AND HWY 240.
Jul 20, 2:04 PM EDTTSTM WND DMG1 Sse Sardinia, NYTREES DOWN ON CREEK RD. IN TOWN OF YORKSHIRE.
Jul 20, 2:21 PM EDTFUNNEL CLOUD2 E Hamburg, NYSPOTTER ERPORTED FUNNEL CLOUD NEAR SOUTH ABBOTT AND THE ORCHARD PARK/HAMBURG TOWN LINE.

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, 5.7 hours before the alert went out and 37 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2017-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2017-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2004 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

960 
WWUS81 KBUF 201744
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
144 PM EDT THU JUL 20 2017

NYZ012-020-085-201815-
Cattaraugus-Southern Erie-Wyoming-
144 PM EDT THU JUL 20 2017

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN WYOMING...
NORTHEASTERN CATTARAUGUS AND SOUTHEASTERN ERIE COUNTIES...

At 143 PM EDT, a strong thunderstorm was located over Boston, or near
Hamburg, moving east at 35 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Hamburg, Boston, Eden, Springville, Colden, Arcade, East Concord,
Chaffee, North Boston and Concord.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4259 7893 4276 7880 4265 7823 4238 7842
TIME...MOT...LOC 1743Z 290DEG 32KT 4265 7875 

$$

Mitchell

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 11:44 AM EDTSpecial Marine WarningBUF31 min
Jul 20, 11:47 AM EDTSpecial Weather StatementBUFGenesee, Monroe, Niagara, Orleans, Wyoming58 min
Jul 20, 12:11 PM EDTSpecial Marine WarningBUF34 min
Jul 20, 12:21 PM EDTSevere Thunderstorm WarningBUFErie, Genesee, Livingston, Monroe, Niagara, Ontario and 2 more54 min
Jul 20, 12:31 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Erie, Genesee, Livingston, Niagara and 1 more59 min
Jul 20, 12:36 PM EDTTornado WarningBUFCattaraugus, Erie, Wyoming24 min
Jul 20, 12:55 PM EDTTornado WarningBUFAllegany, Cattaraugus, Erie, Wyoming35 min
Jul 20, 1:23 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Wyoming52 min
Jul 20, 1:35 PM EDTTornado WarningBUFAllegany40 min
Jul 20, 2:07 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Erie, Wyoming38 min
Jul 20, 2:46 PM EDTSevere Thunderstorm WarningBUFAllegany59 min

Nearby

Special Weather Statements in New York, 2017Every special weather statement in 2017

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.