Alert archive / New York / Special Weather Statements in 2019

Special Weather Statement, NWS Buffalo, NY

March 18, 2019Genesee County, Ontario County, New York

NWS Buffalo, NY issued this special weather statement at Mar 18, 2019, 4:26 PM EDT for Genesee County, Ontario County, New York. It was in force for 49 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
Mar 18, 2019, 4:26 PM EDT (20:26 UTC)
Expired
Mar 18, 2019, 5:15 PM EDT
In force
49 min
Issued by
NWS Buffalo, NY

Counties Genesee County, NY, Ontario County, NY

The radar

The Buffalo radar (KBUF), 74 km from the middle of the area, began a volume at 20:29 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, 8.4 hours before the alert went out and 71 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 2019-03-18Temperature 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°0°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 2019-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1189 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
124 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 Mar 18, 3:56 PM EDT, 30 minutes earlier.

Area forecast discussion, Mar 18, 3:56 PM EDT, 30 minutes before
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Hazardous weather outlook, Mar 18, 5:00 AM EDT, 11 hours 26 minutes before
Hazardous Weather Outlook
National Weather Service Buffalo NY
500 AM EDT Mon Mar 18 2019

NYZ001>008-010>014-019>021-085-190900-
Niagara-Orleans-Monroe-Wayne-Northern Cayuga-Oswego-Jefferson-Lewis-
Northern Erie-Genesee-Wyoming-Livingston-Ontario-Chautauqua-
Cattaraugus-Allegany-Southern Erie-
500 AM EDT Mon Mar 18 2019

This Hazardous Weather Outlook is for western and north central New
York.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

LEZ020-040-041-LOZ030-042>045-062>065-SLZ022-024-190900-
Upper Niagara River and Buffalo Harbor-
Lake Erie nearshore waters from Ripley to Dunkirk-
Lake Erie nearshore waters from Dunkirk to Buffalo-
Lower Niagara River-
Lake Ontario nearshore waters from the Niagara River to Hamlin Beach-
Lake Ontario nearshore waters from Hamlin Beach to Sodus Bay-
Lake Ontario nearshore waters from Sodus Bay to Mexico Bay-
Lake Ontario nearshore waters from Mexico Bay to the Saint Lawrence
River-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence River-
Saint Lawrence River from Cape Vincent to Ogdensburg-
Saint Lawrence River from Ogdensburg to Saint Regis-
500 AM EDT Mon Mar 18 2019

This Hazardous Weather Outlook is for the New York waters of Lake
Erie, Lake Ontario, and the Saint Lawrence River.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

In the hours before

Special weather statement, Mar 18, 3:13 PM EDT, 1 hour 13 minutes before
Special Weather Statement
National Weather Service Buffalo NY
313 PM EDT MON MAR 18 2019

NYZ001>004-010>014-085-182000-
Ontario-Livingston-Southern
Erie-Wyoming-Orleans-Wayne-Genesee-Niagara-Monroe-Northern Erie-
313 PM EDT MON MAR 18 2019

...AN AREA OF MODERATE TO HEAVY SNOW WILL AFFECT PORTIONS OF THE
AREA OVER THE NEXT ONE TO TWO HOURS CAUSING REDUCED VISIBILITIES...

At 312 PM EDT, a band of moderate to heavy snow was located along a
line extending from Kenmore to near Batavia to near Rochester. This
band of snow is moving east-southeast through the Niagara Frontier
and near the Rochester Metro area.

Locations impacted include...
Buffalo, Rochester, Cheektowaga, Niagara Falls, West Seneca, North
Tonawanda, Clarence, Chili, Lockport, Lackawanna, Batavia, Kenmore,
Depew, Amherst, Tonawanda, Lancaster, Hamburg, Brockport, East
Rochester and East Aurora.

This includes the following highways...
 Interstate 390 between exits 10 and 12.
 Interstate 90 between exits 57A and 45.

Visibilities may drop quickly to less than a half mile in this area
of moderate to heavy snow.

Conditions can deteriorate rapidly in winter weather situations.
Slow down and allow extra time when traveling.

LAT...LON 4264 7916 4267 7912 4272 7909 4276 7898
      4280 7892 4284 7893 4292 7890 4296 7893
      4299 7901 4301 7903 4306 7900 4308 7908
      4311 7906 4312 7907 4315 7904 4323 7806
      4310 7702 4252 7899 4259 7919
TIME...MOT...LOC 1904Z 279DEG 18KT 4312 7787 4276 7937

Welch
Special weather statement, Mar 18, 4:26 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 7:07 AM EDTSpecial Weather StatementBUFOntario83 min
Mar 18, 9:17 AM EDTSpecial Weather StatementBUFErie58 min
Mar 18, 10:14 AM EDTSpecial Weather StatementBUFErie61 min
Mar 18, 3:13 PM EDTSpecial Weather StatementBUFErie, Genesee47 min

Nearby

Special Weather Statements in New York, 2019Every 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.