Alert archive / New York / Special Weather Statements in 2019

Special Weather Statement, NWS Buffalo, NY

July 30, 2019Oswego County, New York

NWS Buffalo, NY issued this special weather statement at Jul 30, 2019, 12:49 PM EDT for Oswego County, New York. It was in force for 41 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 30, 2019, 12:49 PM EDT (16:49 UTC)
Expired: Jul 30, 2019, 1:30 PM EDT
In force: 41 min
Issued by: NWS Buffalo, NY

County Oswego County, NY

The radar

The Ft Drum radar (KTYX), 80 km from the middle of the area, began a volume at 16:49 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, 4.8 hours before the alert went out and 194 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: 197 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 870 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 141 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.5

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 Jul 30, 10:47 AM EDT, 2 hours 2 minutes earlier.

Area forecast discussion, Jul 30, 10:47 AM EDT, 2 hours 2 minutes before

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Hazardous weather outlook, Jul 30, 4:39 AM EDT, 8 hours 10 minutes before

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In the hours before

Special weather statement, Jul 30, 12:49 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Buffalo NY
1249 PM EDT Tue Jul 30 2019

NYZ004>006-301730-
Oswego-Wayne-Northern Cayuga-
1249 PM EDT Tue Jul 30 2019

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN WAYNE...
CAYUGA AND CENTRAL OSWEGO COUNTIES...

At 1247 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Mexico Point State Park to near
Weedsport. Movement was northeast at 30 mph.

Winds in excess of 40 mph are possible with these storms along with
very heavy downpours.

Locations impacted include...
Fulton, Pulaski, Central Square, Weedsport, Cato, Fulton, Volney,
Richland, Palermo, New Haven, Phoenix, Ira, Conquest, Savannah,
Mexico, Port Byron and Orwell.

This includes the following highways...
 Interstate 90 near exit 40.
 Interstate 81 between exits 32 and 36.

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.

LAT...LON 4324 7614 4327 7620 4324 7621 4322 7619
      4320 7621 4324 7627 4322 7626 4320 7627
      4323 7631 4323 7648 4315 7647 4314 7649
      4311 7647 4310 7650 4303 7650 4302 7680
      4320 7670 4350 7636 4368 7592
TIME...MOT...LOC 1647Z 228DEG 27KT 4349 7627 4307 7664

Hitchcock

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 10:57 PM EDT	Special Marine Warning	BUF		33 min
Jul 29, 10:59 PM EDT	Special Weather Statement	BUF	Niagara	46 min
Jul 29, 11:36 PM EDT	Special Weather Statement	BUF	Orleans	39 min
Jul 30, 3:25 AM EDT	Special Marine Warning	BUF		65 min
Jul 30, 4:22 AM EDT	Special Weather Statement	BUF	Chautauqua	38 min
Jul 30, 4:29 AM EDT	Special Marine Warning	BUF		61 min
Jul 30, 4:53 AM EDT	Special Weather Statement	BUF	Chautauqua	37 min
Jul 30, 5:03 AM EDT	Special Weather Statement	BUF	Chautauqua	42 min
Jul 30, 11:49 AM EDT	Special Marine Warning	BUF		41 min
Jul 30, 1:32 PM EDT	Special Weather Statement	BUF	Lewis, Oswego	43 min
Jul 30, 1:50 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	55 min
Jul 30, 4:07 PM EDT	Special Weather Statement	BUF	Livingston	23 min
Jul 30, 4:29 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario	46 min
Jul 30, 5:13 PM EDT	Special Weather Statement	BUF	Ontario	32 min
Jul 30, 7:42 PM EDT	Special Weather Statement	BUF	Oswego	33 min

Nearby

Special Weather Statements in New York, 2019 Every special weather statement in 2019

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.