Alert archive / New York / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 337

May 27, 200513 counties in New York; 11 counties in Pennsylvania

The Storm Prediction Center issued this severe thunderstorm watch at May 27, 2005, 2:25 PM EDT for 13 counties in New York; 11 counties in Pennsylvania. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 27, 2005, 2:25 PM EDT (18:25 UTC)
Expired
May 27, 2005, 9:00 PM EDT
In force
7 hr
Issued by
the Storm Prediction Center
All 24 counties

Broome County, NY, Chemung County, NY, Chenango County, NY, Cortland County, NY, Delaware County, NY, Madison County, NY, Otsego County, NY, Schuyler County, NY, Steuben County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Yates County, NY, Bradford County, PA, Columbia County, PA, Lackawanna County, PA, Luzerne County, PA, Lycoming County, PA, Montour County, PA, Sullivan County, PA, Susquehanna County, PA, Tioga County, PA, Wayne County, PA, Wyoming County, PA

The radar

The Binghamton radar (KBGM), 40 km from the middle of the area, began a volume at 18:25 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.

Warnings issued inside it

4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 27, 3:14 PM EDTSevere Thunderstorm WarningBGMSteuben31 min
May 27, 3:56 PM EDTSevere Thunderstorm WarningBGMSchuyler, Steuben34 min
May 27, 4:33 PM EDTSevere Thunderstorm WarningBGMSchuyler42 min
May 27, 5:16 PM EDTSevere Thunderstorm WarningBGMSeneca, Tompkins44 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.4 hours before the alert went out and 205 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 2005-05-27Temperature 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 2005-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -41 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
1648 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
-41 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 27, 12:05 PM EDTMesoscale DiscussionSPCAllegany, Broome, Chemung, Schuyler, Steuben, Sullivan and 1 more115 min
May 27, 4:21 PM EDTMesoscale DiscussionSPCBroome, Cayuga, Chemung, Chenango, Cortland, Delaware and 13 more84 min

Nearby

Severe Thunderstorm Watches in New York, 2005Severe Thunderstorm Watches in Pennsylvania, 2005Every severe thunderstorm watch in 2005

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.