Alert archive / New York / Special Weather Statements in 2018

Special Weather Statement, NWS Buffalo, NY

August 3, 2018Chautauqua County, New York

NWS Buffalo, NY issued this special weather statement at Aug 3, 2018, 3:06 PM EDT for Chautauqua County, New York. It was in force for 54 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
Aug 3, 2018, 3:06 PM EDT (19:06 UTC)
Expired
Aug 3, 2018, 4:00 PM EDT
In force
54 min
Issued by
NWS Buffalo, NY

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 76 km from the middle of the area, began a volume at 19:05 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, 7.1 hours before the alert went out and 76 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 2018-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 404 joules per kilogram.LCLLFCEL10008507005003002001001 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 2018-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 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
404 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
930 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

076 
WWUS81 KBUF 031906
SPSBUF

Special Weather Statement
National Weather Service Buffalo NY
306 PM EDT FRI AUG 3 2018

NYZ019-032000-
Chautauqua-
306 PM EDT FRI AUG 3 2018

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL CHAUTAUQUA
COUNTY...

At 303 PM EDT, strong thunderstorms were clustered near Mayville, 
moving northeast at 15 mph. These storms are capable of producing 
torrential rainfall which may cause localized flooding. Do not drive 
your vehicle through any flooded roadways. 

Locations impacted include...
Dunkirk, Fredonia, Westfield, Silver Creek, Mayville, Lake Erie State
Park, Findley Lake, Chautauqua Institute, SUNY Fredonia and
Chautauqua.

This includes the following highways...
 Interstate 90 between exits 61 and 58.
 Interstate 86 between exits 4 and 6.

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 4227 7975 4241 7945 4245 7942 4245 7941
      4249 7935 4249 7933 4250 7932 4251 7928
      4253 7925 4255 7915 4257 7913 4257 7911
      4254 7906 4232 7906 4207 7975
TIME...MOT...LOC 1903Z 236DEG 13KT 4222 7958 

$$

Reynolds

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 10:21 AM EDTSpecial Weather StatementBUFAllegany24 min
Aug 3, 4:08 PM EDTSpecial Weather StatementBUFNiagara, Orleans67 min

Nearby

Special Weather Statements in New York, 2018Every special weather statement in 2018

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.