Alert archive / New York / Special Weather Statements in 2020

Special Weather Statement, NWS Buffalo, NY

May 15, 2020Allegany County, New York

NWS Buffalo, NY issued this special weather statement at May 15, 2020, 3:38 PM EDT for Allegany County, New York. It was in force for 37 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: May 15, 2020, 3:38 PM EDT (19:38 UTC)
Expired: May 15, 2020, 4:15 PM EDT
In force: 37 min
Issued by: NWS Buffalo, NY

County Allegany County, NY

The radar

The Buffalo radar (KBUF), 83 km from the middle of the area, began a volume at 19:39 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, 7.6 hours before the alert went out and 79 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 789 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 194 m²/s²
0-3 km storm-relative helicity: 198 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 May 15, 1:55 PM EDT, 1 hour 43 minutes earlier.

Area forecast discussion, May 15, 1:55 PM EDT, 1 hour 43 minutes before

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Hazardous weather outlook, May 15, 3:38 PM EDT, 0 minutes before

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In the hours before

Special weather statement, May 15, 2:05 PM EDT, 1 hour 33 minutes before

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Special weather statement, May 15, 3:17 PM EDT, 21 minutes before

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Local storm report, May 15, 3:20 PM EDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
320 PM EDT FRI MAY 15 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0245 PM     HAIL             8 NNE ARCADE            42.64N 78.39W
05/15/2020  E0.75 INCH       WYOMING            NY   PUBLIC

0257 PM     TSTM WND DMG     3 WSW WOLCOTT           43.21N 76.88W
05/15/2020                   WAYNE              NY   PUBLIC

            ROOF BLOWN OFF OF BARN.

&&

Special weather statement, May 15, 3:38 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Buffalo NY
338 PM EDT Fri May 15 2020

NYZ021-152015-
Allegany-
338 PM EDT Fri May 15 2020

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN ALLEGANY COUNTY...

At 338 PM EDT, a strong thunderstorm was located over Belfast, or 20
miles northwest of Wellsville, moving east at 40 mph.

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

Locations impacted include...
Belfast, Rushford Lake, Houghton, Caneadea, Birdsall, Short Tract
and Swain.

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.

LAT...LON 4230 7827 4244 7826 4250 7784 4233 7784
TIME...MOT...LOC 1938Z 258DEG 34KT 4237 7815

Hitchcock

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 2:05 PM EDT	Special Weather Statement	BUF	Chautauqua, Livingston, Wyoming	70 min
May 15, 2:26 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Wyoming	49 min
May 15, 3:02 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario, Wyoming	58 min
May 15, 3:17 PM EDT	Special Weather Statement	BUF	Oswego	58 min
May 15, 3:35 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	40 min
May 15, 3:53 PM EDT	Special Weather Statement	BUF	Lewis	37 min
May 15, 4:38 PM EDT	Special Weather Statement	BUF	Cattaraugus	37 min
May 15, 5:28 PM EDT	Areal Flood Warning	BUF	Chautauqua	3 hr

Nearby

Special Weather Statements in New York, 2020 Every special weather statement in 2020

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.