Alert archive / New York / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 90, NWS Buffalo, NY

September 2, 2013Cayuga County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Sep 2, 2013, 2:01 PM EDT for Cayuga County, New York. It was in force for 29 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 2, 2013, 2:01 PM EDT (18:01 UTC)
Expired
Sep 2, 2013, 2:30 PM EDT
In force
29 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

County Cayuga County, NY

The radar

The Ft Drum radar (KTYX), 101 km from the middle of the area, began a volume at 18:04 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, 6.0 hours before the alert went out and 176 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 2013-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1277 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 2013-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 67 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
1277 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
650 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
67 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

937 
WUUS51 KBUF 021801
SVRBUF
NYC011-021830-
/O.NEW.KBUF.SV.W.0090.130902T1801Z-130902T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
201 PM EDT MON SEP 2 2013

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL CAYUGA COUNTY IN CENTRAL NEW YORK

* UNTIL 230 PM EDT

* AT 159 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
  NORTHWEST OF WEEDSPORT...OR NEAR MONTEZUMA...AND MOVING NORTHEAST
  AT 20 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
  WEEDSPORT...
  CATO...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

&&

LAT...LON 4310 7649 4303 7648 4302 7655 4303 7671
      4315 7670 4324 7648 4311 7647
TIME...MOT...LOC 1801Z 247DEG 16KT 4308 7664

$$

SMITH
1 follow-up statement
810 
WWUS51 KBUF 021831
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
231 PM EDT MON SEP 2 2013

NYC011-021841-
/O.EXP.KBUF.SV.W.0090.000000T0000Z-130902T1830Z/
CAYUGA NY-
231 PM EDT MON SEP 2 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CAYUGA COUNTY
HAS EXPIRED...

AT 231 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO LONGER
SEVERE...THUS THE WARNING HAS BEEN ALLOWED TO EXPIRE.

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE
STILL POSSIBLE FROM THE THUNDERSTORM.

LAT...LON 4310 7649 4303 7648 4302 7655 4303 7671
      4315 7670 4324 7648 4311 7647
TIME...MOT...LOC 1801Z 247DEG 16KT 4308 7664

$$

SMITH

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 1, 8:03 PM EDTSpecial Weather StatementBUFAllegany57 min
Sep 1, 10:40 PM EDTSpecial Weather StatementBUFWayne65 min
Sep 1, 11:43 PM EDTSpecial Weather StatementBUFOswego77 min
Sep 2, 12:20 AM EDTSevere Thunderstorm WarningBUFLewis, Oswego55 min
Sep 2, 11:06 AM EDTSpecial Marine WarningBUF54 min
Sep 2, 11:31 AM EDTSpecial Marine WarningBUF44 min
Sep 2, 11:52 AM EDTSevere Thunderstorm WarningBUFChautauqua23 min
Sep 2, 12:13 PM EDTSevere Thunderstorm WarningBUFChautauqua32 min
Sep 2, 12:39 PM EDTSevere Thunderstorm WarningBUFChautauqua36 min
Sep 2, 12:51 PM EDTSpecial Weather StatementBUFCayuga39 min
Sep 2, 1:11 PM EDTSevere Thunderstorm WarningBUFCattaraugus, Chautauqua34 min
Sep 2, 1:28 PM EDTSpecial Weather StatementBUFGenesee62 min
Sep 2, 1:35 PM EDTSevere Thunderstorm WarningBUFGenesee, Livingston, Monroe, Ontario, Wyoming55 min
Sep 2, 2:14 PM EDTSpecial Weather StatementBUFCattaraugus61 min
Sep 2, 2:37 PM EDTSpecial Marine WarningBUF38 min
Sep 2, 2:46 PM EDTSpecial Weather StatementBUFCayuga29 min
Sep 2, 3:20 PM EDTSpecial Marine WarningBUF85 min
Sep 2, 3:31 PM EDTSevere Thunderstorm WarningBUFOswego59 min
Sep 2, 3:45 PM EDTSpecial Marine WarningBUF2 hr
Sep 2, 3:59 PM EDTSevere Thunderstorm WarningBUFCayuga, Oswego, Wayne61 min
Sep 2, 4:15 PM EDTSevere Thunderstorm WarningBUFCayuga, Oswego, Wayne60 min
Sep 2, 4:25 PM EDTSevere Thunderstorm WarningBUFJefferson, Lewis65 min
Sep 2, 4:31 PM EDTSevere Thunderstorm WarningBUFWayne59 min
Sep 2, 4:32 PM EDTSevere Thunderstorm WarningBUFCayuga, Oswego43 min
Sep 2, 4:36 PM EDTFlash Flood WarningBUFCayuga, Oswego3 hr
Sep 2, 4:39 PM EDTSevere Thunderstorm WarningBUFJefferson, Lewis51 min
Sep 2, 4:57 PM EDTSevere Thunderstorm WarningBUFLewis, Oswego33 min
Sep 2, 4:59 PM EDTSpecial Marine WarningBUF61 min
Sep 2, 5:24 PM EDTSevere Thunderstorm WarningBUFLewis36 min
Sep 2, 5:35 PM EDTSevere Thunderstorm WarningBUFLewis25 min
Sep 2, 5:36 PM EDTAreal Flood AdvisoryBUFLewis3 hr
Sep 2, 6:24 PM EDTSmall Craft AdvisoryBUF61 hr

Nearby

Severe Thunderstorm Warnings in New York, 2013Every severe thunderstorm warning in 2013

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.