Alert archive / New York / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 86, NWS Buffalo, NY

August 3, 2017Lewis County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Aug 3, 2017, 12:35 PM EDT for Lewis County, New York. It was in force for 32 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, 2017, 12:35 PM EDT (16:35 UTC)
Expired
Aug 3, 2017, 1:07 PM EDT
In force
32 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Lewis County, NY

The radar

The Ft Drum radar (KTYX), 21 km from the middle of the area, began a volume at 16:39 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

Albany, NY (KALY), launched 12:00Z, 4.6 hours before the alert went out and 175 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, Albany, NY at 12:00Z on 2017-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 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, Albany, NY at 12:00Z on 2017-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.1939Sfc1 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
12 J/kg
Mixed-layer CIN
-273 J/kg
Mixed-layer LCL
855 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

904 
WUUS51 KBUF 031635
SVRBUF
NYC049-031730-
/O.NEW.KBUF.SV.W.0086.170803T1635Z-170803T1730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Buffalo NY
1235 PM EDT THU AUG 3 2017

The National Weather Service in Buffalo has issued a

* Severe Thunderstorm Warning for...
  East central Lewis County in central New York...

* Until 130 PM EDT.

* At 1234 PM EDT, a severe thunderstorm was located over Lowville, or
  21 miles north of Boonville, moving east at 10 mph.

  HAZARD...Quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Minor damage to vehicles is possible. 

* Locations impacted include...
  Lowville, New Bremen, Watson, Martinsburg, Brantingham and
  Sperryville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4374 7557 4385 7553 4383 7519 4365 7523
TIME...MOT...LOC 1634Z 279DEG 7KT 4377 7545 

HAIL...1.00IN
WIND...<50MPH
 
$$

TMA
1 follow-up statement
616 
WWUS51 KBUF 031707
SVSBUF

Severe Weather Statement
National Weather Service Buffalo NY
107 PM EDT THU AUG 3 2017

NYC049-031717-
/O.CAN.KBUF.SV.W.0086.000000T0000Z-170803T1730Z/
Lewis NY-
107 PM EDT THU AUG 3 2017

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LEWIS COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been cancelled.

LAT...LON 4374 7557 4385 7553 4383 7519 4365 7523
TIME...MOT...LOC 1706Z 279DEG 7KT 4376 7536 

$$

TMA

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 12:22 PM EDTSpecial Weather StatementBUFLewis38 min
Aug 3, 1:56 PM EDTSpecial Weather StatementBUFLewis34 min
Aug 3, 2:42 PM EDTLakeshore Flood WarningBUFCayuga, Jefferson, Monroe, Niagara, Orleans, Oswego and 1 more61 hr
Aug 3, 3:32 PM EDTSpecial Weather StatementBUFOrleans28 min
Aug 3, 4:40 PM EDTSpecial Weather StatementBUFErie35 min
Aug 3, 5:08 PM EDTSpecial Weather StatementBUFLivingston37 min
Aug 3, 5:11 PM EDTSpecial Weather StatementBUFGenesee34 min
Aug 3, 5:29 PM EDTSevere Thunderstorm WarningBUFErie, Genesee, Niagara, Orleans46 min
Aug 3, 5:52 PM EDTSpecial Weather StatementBUFMonroe53 min
Aug 3, 6:00 PM EDTSpecial Marine WarningBUF60 min

Nearby

Severe Thunderstorm Warnings in New York, 2017Every severe thunderstorm warning in 2017

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.