Alert archive / New York / Special Weather Statements in 2021

Special Weather Statement, NWS Buffalo, NY

September 7, 2021Niagara County, New York

NWS Buffalo, NY issued this special weather statement at Sep 7, 2021, 11:02 PM EDT for Niagara County, New York. It was in force for 28 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
Sep 7, 2021, 11:02 PM EDT (03:02 UTC)
Expired
Sep 7, 2021, 11:30 PM EDT
In force
28 min
Issued by
NWS Buffalo, NY
Hail
0.00 in
Wind
30

County Niagara County, NY

The radar

The Buffalo radar (KBUF), 34 km from the middle of the area, began a volume at 03:06 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 00:00Z, 3.0 hours before the alert went out and 37 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 00:00Z on 2021-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 146 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2021-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 square meters per square second.19395878Sfc1 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
146 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1665 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
201 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted.

988 
WWUS81 KBUF 080302
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
1102 PM EDT Tue Sep 7 2021
 
NYZ001-080330-
Niagara NY-
1102 PM EDT Tue Sep 7 2021

...Strong thunderstorms will impact portions of Niagara County
through 1130 PM EDT...

At 1101 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from 15 miles north of Newfane to 19 miles west of
Niagara Falls. Movement was east at 45 mph.

HAZARD...Winds in excess of 30 mph and heavy rain.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. 

Locations impacted include...
Niagara Falls, Lockport, Newfane, Lewiston, Youngstown, Middleport,
Fort Niagara State Park, Sanborn, Wilson, Barker, Cambria Center,
Olcott, Pendleton Center, Ransomville, Gasport, Model City and
Appleton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Very heavy rainfall is also occurring with these storms and may lead 
to localized flooding. Do not drive your vehicle through flooded 
roadways.

&&

LAT...LON 4340 7864 4341 7847 4313 7846 4308 7907
      4311 7906 4312 7907 4314 7904 4317 7905
      4325 7906 4326 7907 4330 7909
TIME...MOT...LOC 0301Z 274DEG 39KT 4351 7870 4300 7942 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

$$

TMA

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 10:44 PM EDTSpecial Marine WarningBUF61 min
Sep 8, 12:41 AM EDTSpecial Weather StatementBUFNiagara49 min
Sep 8, 4:10 AM EDTBeach Hazards StatementBUFChautauqua, Erie19 hr
Sep 8, 5:11 AM EDTSpecial Weather StatementBUFNiagara64 min
Sep 8, 5:27 AM EDTSpecial Marine WarningBUF33 min
Sep 8, 5:58 AM EDTSpecial Weather StatementBUFOrleans32 min
Sep 8, 7:12 AM EDTSpecial Weather StatementBUFErie63 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.