Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

April 1, 2021Niagara County, Orleans County, New York

NWS Buffalo, NY issued this special weather statement at Apr 1, 2021, 12:17 PM EDT for Niagara County, Orleans County, New York. It was in force for 88 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
Apr 1, 2021, 12:17 PM EDT (16:17 UTC)
Expired
Apr 1, 2021, 1:45 PM EDT
In force
88 min
Issued by
NWS Buffalo, NY

Counties Niagara County, NY, Orleans County, NY

The radar

The Buffalo radar (KBUF), 29 km from the middle of the area, began a volume at 16:20 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, 4.3 hours before the alert went out and 31 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 2021-04-01Temperature 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 2021-04-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -163 square meters per square second.1939587897117Sfc1 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
1201 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
-163 m²/s²
0-3 km storm-relative helicity
-79 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

073 
WWUS81 KBUF 011617
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
1217 PM EDT Thu Apr 1 2021

NYZ001>003-010-011-011745-
Orleans-Genesee-Monroe-Niagara-Northern Erie-
1217 PM EDT Thu Apr 1 2021

...A SNOW SQUALL WILL AFFECT NORTHEASTERN ERIE...NIAGARA...ORLEANS...
NORTHWESTERN GENESEE AND NORTHWESTERN MONROE COUNTIES...

At 1214 PM EDT, a snow squall was located along a line extending from
near Fort Niagara State Park to near Lakeside Beach State Park.
Movement was southeast at 20 mph.

Locations impacted include...
Niagara Falls, North Tonawanda, Lockport, Amherst, Tonawanda,
Brockport, Medina, Albion, Hamlin Beach State Park, Grand Island,
Newfane, Pendleton, Spencerport, Lewiston, Youngstown, Middleport,
Holley, Waterport, Lakeside Beach State Park and Fort Niagara State
Park.

Visibilities will drop quickly to a quarter of a mile in this squall.

Conditions can deteriorate rapidly in winter weather situations. Be
prepared for snow or ice covered roads. Slow down and allow extra
time when traveling.

LAT...LON 4342 7839 4342 7808 4340 7795 4319 7780
      4298 7899 4300 7902 4306 7900 4308 7908
      4311 7906 4312 7907 4315 7904 4325 7906
      4330 7909

$$

JLA

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 1, 1:45 PM EDTSpecial Weather StatementBUFErie, Genesee, Livingston, Ontario, Orleans, Wyoming60 min
Apr 1, 2:47 PM EDTSpecial Weather StatementBUFErie, Genesee, Livingston, Ontario, Wyoming58 min
Apr 1, 3:47 PM EDTSpecial Weather StatementBUFCattaraugus, Chautauqua, Erie, Genesee, Livingston, Ontario and 1 more58 min
Apr 1, 4:43 PM EDTSpecial Weather StatementBUFAllegany, Cattaraugus, Chautauqua, Erie, Livingston, Ontario and 1 more62 min

Nearby

Special Weather Statements in New York, 2021Every special weather statement in 2021

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.