Alert archive / New York / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 56, NWS Binghamton, NY

July 21, 20154 counties in New York

NWS Binghamton, NY issued this severe thunderstorm warning at Jul 21, 2015, 12:35 PM EDT for 4 counties in New York. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 21, 2015, 12:35 PM EDT (16:35 UTC)
Expired
Jul 21, 2015, 1:15 PM EDT
In force
40 min
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Broome County, NY, Cortland County, NY, Tioga County, NY, Tompkins County, NY

The radar

The Binghamton radar (KBGM), 22 km from the middle of the area, began a volume at 16:35 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 195 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 2015-07-21Temperature 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 2015-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.1939587897Sfc1 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
1499 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Binghamton, NY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 21, 10:11 AM EDT, 2 hours 24 minutes earlier.

Area forecast discussion, Jul 21, 10:11 AM EDT, 2 hours 24 minutes before
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Hazardous weather outlook, Jul 21, 3:52 AM EDT, 8 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BINGHAMTON NY
352 AM EDT TUE JUL 21 2015

NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043-
044-047-048-072-220800-
NORTHERN ONEIDA-YATES-SENECA-SOUTHERN CAYUGA-ONONDAGA-STEUBEN-
SCHUYLER-CHEMUNG-TOMPKINS-MADISON-SOUTHERN ONEIDA-CORTLAND-CHENANGO-
OTSEGO-TIOGA-BROOME-DELAWARE-SULLIVAN-BRADFORD-SUSQUEHANNA-
NORTHERN WAYNE-WYOMING-LACKAWANNA-LUZERNE-PIKE-SOUTHERN WAYNE-
352 AM EDT TUE JUL 21 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW YORK AND
NORTHEAST PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

A COLD FRONT IS EXPECTED TO MOVE THROUGH THE REGION TODAY AND WILL
BRING THE CHANCE FOR SHOWERS AND THUNDERSTORMS. SOME OF THESE
STORMS MAY BECOME SEVERE. WINDS WILL BE THE MAIN THREAT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 21, 11:34 AM EDT, 1 hour 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1134 AM EDT TUE JUL 21 2015

NYZ015-016-022-023-211615-
SENECA NY-YATES NY-SCHUYLER NY-STEUBEN NY-
1134 AM EDT TUE JUL 21 2015

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT STEUBEN...SCHUYLER...
SOUTHWESTERN SENECA AND YATES COUNTIES  ...

* AT 1132 AM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
  THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR BENTON TO NEAR
  ALFRED...AND MOVING SOUTHEAST AT 25 MPH.

* STRONG WIND GUSTS UP TO 35 MPH WILL BE POSSIBLE WITH THESE STORMS.

* STRONG THUNDERSTORMS WILL BE NEAR...
  PENN YAN...BENTON AND DRESDEN AROUND 1140 AM EDT.
  WILLARD AROUND 1150 AM EDT.
  HIMROD AROUND 1155 AM EDT.
  STARKEY...LODI AND LODI STATION AROUND 1200 PM EDT.
  GREENWOOD...CAYWOOD AND LAKEMONT AROUND 1205 PM EDT.
  HECTOR AND TOWNSENDVILLE AROUND 1210 PM EDT.
  JASPER...TROUPSBURG AND SEARSBURG AROUND 1215 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO POOR DRAINAGE AND URBAN FLOODING. DO NOT DRIVE YOUR VEHICLE
THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4239 7773 4276 7705 4276 7698 4279 7697
      4251 7669 4243 7669 4230 7691 4229 7696
      4226 7697 4200 7740 4200 7770 4205 7775
TIME...MOT...LOC 1532Z 314DEG 22KT 4272 7700 4227 7783

RRM
Special weather statement, Jul 21, 12:15 PM EDT, 20 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1215 PM EDT TUE JUL 21 2015

NYZ015-016-023-025-044-055-211700-
SENECA NY-YATES NY-SCHUYLER NY-TIOGA NY-CORTLAND NY-TOMPKINS NY-
1215 PM EDT TUE JUL 21 2015

...STRONG THUNDERSTORMS WILL AFFECT NORTH CENTRAL TIOGA...TOMPKINS...
NORTHEASTERN SCHUYLER...SOUTHWESTERN CORTLAND...SOUTHEASTERN SENECA
AND SOUTHEASTERN YATES COUNTIES  ...

* AT 1214 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
  OVER HECTOR...OR 7 MILES EAST OF DUNDEE...MOVING EAST AT 35 MPH.

* STRONG WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THIS STORM.

* THIS STRONG THUNDERSTORM WILL BE NEAR...
  REYNOLDSVILLE AND SEARSBURG AROUND 1220 PM EDT.
  TRUMANSBURG...PERRY CITY AND MECKLENBURG AROUND 1225 PM EDT.
  TAUGHANNOCK FALLS AROUND 1230 PM EDT.
  ENFIELD AROUND 1235 PM EDT.
  NEWFIELD AROUND 1240 PM EDT.
  ITHACA AROUND 1245 PM EDT.
  DANBY AROUND 1250 PM EDT.
  BESEMER...BROOKTONDALE AND SOUTH DANBY AROUND 1255 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

VERY HEAVY RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO POOR DRAINAGE AND URBAN FLOODING. DO NOT DRIVE YOUR VEHICLE
THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4242 7697 4262 7688 4249 7617 4223 7629
TIME...MOT...LOC 1614Z 289DEG 30KT 4252 7682

RRM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 11:34 AM EDTSpecial Weather StatementBGMSchuyler, Steuben, Yates41 min
Jul 21, 12:15 PM EDTSpecial Weather StatementBGMSchuyler, Tompkins45 min
Jul 21, 1:08 PM EDTSpecial Weather StatementBGMChemung, Tioga67 min
Jul 21, 1:16 PM EDTSpecial Weather StatementBGMCortland29 min
Jul 21, 1:50 PM EDTSpecial Weather StatementBGMBroome25 min

Nearby

Severe Thunderstorm Warnings in New York, 2015Every severe thunderstorm warning in 2015

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.