Alert archive / New York / Special Weather Statements in 2016

Special Weather Statement, NWS Buffalo, NY

July 31, 2016Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Jul 31, 2016, 2:21 PM EDT for Chautauqua County, New York. It was in force for 54 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: Jul 31, 2016, 2:21 PM EDT (18:21 UTC)
Expired: Jul 31, 2016, 3:15 PM EDT
In force: 54 min
Issued by: NWS Buffalo, NY

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 99 km from the middle of the area, began a volume at 18:24 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, 6.4 hours before the alert went out and 99 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: 67 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 868 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

219 
WWUS81 KBUF 311821
SPSBUF

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
221 PM EDT SUN JUL 31 2016

NYZ019-020-311915-
CATTARAUGUS-CHAUTAUQUA-
221 PM EDT SUN JUL 31 2016

...A STRONG THUNDERSTORM WILL BRING HEAVY RAIN TO SOUTHWESTERN
CATTARAUGUS AND CHAUTAUQUA COUNTIES...

AT 218 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS MOVING INTO THE
WESTERN SOUTHERN TIER. THESE THUNDERSTORMS ARE VERY SLOW MOVING AND
HAVE THE POTENTIAL TO PRODUCE LOCALLY HEAVY RAINFALL. THUNDERSTORMS
WILL CONTINUE THROUGH LATE AFTERNOON, AND THEN TAPER OFF THIS
EVENING.

THIS INCLUDES JAMESTOWN AND SURROUNDING AREAS, AS WELL AS INTERSTATE
86 BETWEEN EXITS 4 AND 21.
 
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 4225 7976 4240 7876 4200 7867 4200 7976
TIME...MOT...LOC 1818Z 271DEG 7KT 4216 7931 

$$

APFFEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 8:14 PM EDT	Special Weather Statement	BUF	Chautauqua	61 min
Jul 31, 2:51 PM EDT	Flash Flood Warning	BUF	Cattaraugus, Chautauqua	4 hr
Jul 31, 3:15 PM EDT	Special Weather Statement	BUF	Livingston, Ontario	60 min
Jul 31, 4:06 PM EDT	Special Weather Statement	BUF	Chautauqua	54 min
Jul 31, 4:15 PM EDT	Special Weather Statement	BUF	Ontario	45 min
Jul 31, 4:55 PM EDT	Flash Flood Warning	BUF	Chautauqua	3 hr
Jul 31, 5:52 PM EDT	Special Weather Statement	BUF	Erie	23 min

Nearby

Special Weather Statements in New York, 2016 Every special weather statement in 2016

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.