Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

April 1, 20217 counties in New York

NWS Buffalo, NY issued this special weather statement at Apr 1, 2021, 3:47 PM EDT for 7 counties in New York. It was in force for 58 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, 3:47 PM EDT (19:47 UTC)
Expired
Apr 1, 2021, 4:45 PM EDT
In force
58 min
Issued by
NWS Buffalo, NY

Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Genesee County, NY, Livingston County, NY, Ontario County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 50 km from the middle of the area, began a volume at 19:46 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, 7.8 hours before the alert went out and 47 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.

927 
WWUS81 KBUF 011947
SPSBUF

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

NYZ003-004-010>014-019>021-085-012045-
Chautauqua-Cattaraugus-Allegany-Ontario-Livingston-Southern
Erie-Wyoming-Wayne-Genesee-Monroe-Northern Erie-
347 PM EDT Thu Apr 1 2021

...A BAND OF HEAVY SNOW SHOWERS WILL AFFECT SOUTHWESTERN WAYNE... 
WYOMING...NORTHERN CATTARAUGUS...ERIE...LIVINGSTON...CHAUTAUQUA... 
NORTHERN ALLEGANY... GENESEE...SOUTHERN MONROE AND ONTARIO 
COUNTIES...

At 343 PM EDT, a band of heavy snow showers was located along a line 
extending from Bristol to Westfield. Movement was south at 20 mph.

Winds in excess of 30 mph are possible with these snow showers and 
visibility will briefly be reduced to a quarter mile. Most roads 
will remain wet, although a few slushy spots may develop across 
higher terrain.


 This includes the following highways...
 Interstate 390 between exits 4 and 12.
 Interstate 90 between exits 60 and 57, and between exits 48 and 44.
 Interstate 86 between exits 6 and 16.

Conditions can deteriorate rapidly in winter weather situations. Be 
prepared for greatly reduced visibility and a few slushy spots on 
roads. Slow down and allow extra time when traveling.

LAT...LON 4236 7968 4253 7939 4259 7919 4269 7910
      4292 7840 4313 7805 4318 7742 4276 7711
      4276 7732 4258 7737 4258 7766 4253 7766
      4253 7772 4244 7773 4200 7957

$$

EAJ

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 1, 12:17 PM EDTSpecial Weather StatementBUFNiagara, Orleans88 min
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, 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.