Alert archive / New York / Tornado Watches in 2012

Tornado Watch 525

July 26, 20125 states

The Storm Prediction Center issued this tornado watch at Jul 26, 2012, 2:10 PM EDT for 5 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 26, 2012, 2:10 PM EDT (18:10 UTC)
Expired
Jul 26, 2012, 8:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
70 kt
All 43 counties

Northwest Hills Planning Region, CT, Berkshire County, MA, Albany County, NY, Broome County, NY, Cayuga County, NY, Chemung County, NY, Chenango County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Dutchess County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Herkimer County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Yates County, NY, Bradford County, PA, Lackawanna County, PA, Luzerne County, PA, Pike County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA, Bennington County, VT, Windham County, VT

The radar

The Binghamton radar (KBGM), 53 km from the middle of the area, began a volume at 18:13 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
80%
One or more gusts of 65 knots or more
50%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 26, 2:25 PM EDTSevere Thunderstorm WarningBGMSteuben80 min
Jul 26, 3:24 PM EDTSevere Thunderstorm WarningBGMChemung, Steuben66 min
Jul 26, 3:35 PM EDTTornado WarningBGMChemung, Steuben40 min
Jul 26, 3:55 PM EDTSevere Thunderstorm WarningBGMBradford65 min
Jul 26, 4:00 PM EDTTornado WarningBGMChemung, Tioga45 min
Jul 26, 4:17 PM EDTTornado WarningBGMBradford43 min
Jul 26, 4:20 PM EDTSevere Thunderstorm WarningBGMBroome, Tioga55 min
Jul 26, 4:24 PM EDTTornado WarningBGMBroome, Chenango, Tioga36 min
Jul 26, 4:30 PM EDTSevere Thunderstorm WarningBGMBradford, Susquehanna, Wayne60 min
Jul 26, 4:49 PM EDTTornado WarningBGMSusquehanna, Wayne56 min
Jul 26, 4:53 PM EDTSevere Thunderstorm WarningBGMLackawanna, Luzerne, Pike, Susquehanna, Wayne, Wyoming67 min
Jul 26, 5:04 PM EDTTornado WarningBGMBroome, Delaware56 min
Jul 26, 5:06 PM EDTTornado WarningBGMLuzerne54 min
Jul 26, 5:19 PM EDTSevere Thunderstorm WarningBGMSullivan56 min
Jul 26, 5:36 PM EDTSevere Thunderstorm WarningALYDutchess, Ulster54 min
Jul 26, 5:40 PM EDTTornado WarningBGMSullivan50 min
Jul 26, 6:01 PM EDTSevere Thunderstorm WarningBGMPike, Wayne29 min
Jul 26, 6:29 PM EDTSevere Thunderstorm WarningALYNorthwest Hills Planning Region61 min
Jul 26, 7:12 PM EDTSevere Thunderstorm WarningALYNorthwest Hills Planning Region46 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

Albany, NY (KALY), launched 12:00Z, 6.2 hours before the alert went out and 133 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 2012-07-26Temperature 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, Albany, NY at 12:00Z on 2012-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 141 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
991 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
141 m²/s²
0-3 km storm-relative helicity
180 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

562 
WWUS20 KWNS 261809
SEL5
SPC WW 261809
CTZ000-MAZ000-NYZ000-PAZ000-VTZ000-270100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 525
NWS STORM PREDICTION CENTER NORMAN OK
210 PM EDT THU JUL 26 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

       WESTERN CONNECTICUT
       WESTERN MASSACHUSETTS
       CENTRAL AND EASTERN NEW YORK
       NORTHEAST PENNSYLVANIA
       SOUTHERN VERMONT

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 210 PM UNTIL
900 PM EDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 15 MILES SOUTH SOUTHWEST OF
ELMIRA NEW YORK TO 20 MILES NORTHEAST OF PITTSFIELD
MASSACHUSETTS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 524...

DISCUSSION...INTENSE THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS
THE WATCH AREA THIS AFTERNOON.  ONE CLUSTER OF ONGOING STORMS OVER
WESTERN NY/PA WILL MOVE RAPIDLY EASTWARD WITH A THREAT OF DAMAGING
WINDS AND HAIL.  OTHER MORE DISCRETE STORMS MAY FORM ON/NORTH OF
RETREATING WARM FRONT.  THESE STORMS WILL POTENTIALLY BECOME
SUPERCELLULAR WITH A RISK OF LARGE HAIL...DAMAGING WINDS...AND
ISOLATED TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24035.


...HART

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 1:50 PM EDTMesoscale DiscussionSPC115 min
Jul 26, 3:37 PM EDTMesoscale DiscussionSPC113 min
Jul 26, 3:57 PM EDTSevere Thunderstorm WatchSPCGreater Bridgeport Planning Region, Capitol Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region, Northeastern Connecticut Planning Region6 hr
Jul 26, 6:04 PM EDTMesoscale DiscussionSPC86 min
Jul 26, 7:28 PM EDTMesoscale DiscussionSPC92 min
Jul 26, 1:15 AM EDTMesoscale DiscussionSPCAllegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 4 more2 hr
Jul 26, 4:31 AM EDTMesoscale DiscussionSPCAllegany, Cattaraugus, Chautauqua, Chemung, Livingston, Ontario and 5 more89 min
Jul 26, 12:26 PM EDTMesoscale DiscussionSPCAllegany, Cattaraugus, Chautauqua, Chemung, Schuyler, Steuben2 hr
Jul 26, 1:16 PM EDTSevere Thunderstorm WatchSPCAllegany, Cattaraugus, Chautauqua9 hr
Jul 26, 6:06 PM EDTMesoscale DiscussionSPCAllegheny, Fayette, Greene, Somerset, Washington, Westmoreland84 min

Nearby

Tornado Watches in New York, 2012Tornado Watches in Pennsylvania, 2012Tornado Watches in Vermont, 2012Every tornado watch in 2012

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.