Alert archive / New York / Special Weather Statements in 2018

Special Weather Statement, NWS Buffalo, NY

September 2, 2018Chautauqua County, Erie County, New York

NWS Buffalo, NY issued this special weather statement at Sep 2, 2018, 9:19 AM EDT for Chautauqua County, Erie County, New York. It was in force for 56 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: Sep 2, 2018, 9:19 AM EDT (13:19 UTC)
Expired: Sep 2, 2018, 10:15 AM EDT
In force: 56 min
Issued by: NWS Buffalo, NY

Counties Chautauqua County, NY, Erie County, NY

The radar

The Buffalo radar (KBUF), 71 km from the middle of the area, began a volume at 13:20 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 nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 1.3 hours before the alert went out and 72 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: 87 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 884 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Buffalo, NY wrote its last area forecast discussion before this special weather statement went out at Sep 2, 6:27 AM EDT, 2 hours 52 minutes earlier.

Area forecast discussion, Sep 2, 6:27 AM EDT, 2 hours 52 minutes before

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Hazardous weather outlook, Sep 2, 5:23 AM EDT, 3 hours 56 minutes before

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In the hours before

Special weather statement, Sep 2, 9:19 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Buffalo NY
919 AM EDT SUN SEP 2 2018

NYZ010-019-020-085-021415-
Chautauqua-Cattaraugus-Southern Erie-Northern Erie-
919 AM EDT SUN SEP 2 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WESTERN CATTARAUGUS...
SOUTHERN ERIE AND CHAUTAUQUA COUNTIES...

At 919 AM EDT, radar indicated strong thunderstorms were located
along a line extending from 8 miles northwest of Angola on the Lake
to near Findley Lake. Movement was east at 35 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
West Seneca, Jamestown, Lackawanna, Dunkirk, Fredonia, Hamburg, East
Aurora, Salamanca, Allegany State Park and Evans.

This includes the following highways...
 Interstate 90 between exits 61 and 56.
 Interstate 86 between exits 4 and 20.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms 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 4227 7976 4228 7973 4230 7976 4234 7972
      4244 7950 4253 7939 4260 7919 4272 7909
      4276 7898 4280 7892 4281 7893 4285 7851
      4208 7876 4206 7976
TIME...MOT...LOC 1319Z 263DEG 29KT 4276 7917 4210 7978

Reynolds

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 2, 8:53 AM EDT	Special Marine Warning	BUF		65 min
Sep 2, 11:17 AM EDT	Special Weather Statement	BUF	Chautauqua	43 min
Sep 2, 2:30 PM EDT	Heat Advisory	BUF	Cayuga, Genesee, Livingston, Monroe, Niagara, Ontario and 3 more	27 hr

Nearby

Special Weather Statements in New York, 2018 Every special weather statement in 2018

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.