Alert archive / New York / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 110, NWS Binghamton, NY

July 11, 2009Cayuga County, Onondaga County, Seneca County, New York

NWS Binghamton, NY issued this severe thunderstorm warning at Jul 11, 2009, 9:56 AM EDT for Cayuga County, Onondaga County, Seneca County, New York. It was in force for 42 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 11, 2009, 9:56 AM EDT (13:56 UTC)
Expired
Jul 11, 2009, 10:38 AM EDT
In force
42 min
Issued by
NWS Binghamton, NY
Area
Storm-based polygon

Counties Cayuga County, NY, Onondaga County, NY, Seneca County, NY

The radar

The Binghamton radar (KBGM), 93 km from the middle of the area, began a volume at 13:56 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, 1.9 hours before the alert went out and 177 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 2009-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1554 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 2009-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 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
1554 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
829 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.0

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 11, 6:50 AM EDT, 3 hours 6 minutes earlier.

Area forecast discussion, Jul 11, 6:50 AM EDT, 3 hours 6 minutes before
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Hazardous weather outlook, Jul 11, 3:37 AM EDT, 6 hours 19 minutes before
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In the hours before

Special weather statement, Jul 11, 9:49 AM EDT, 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
949 AM EDT SAT JUL 11 2009

NYZ016>018-111445-
CAYUGA NY-ONONDAGA NY-SENECA NY-
949 AM EDT SAT JUL 11 2009

...LINE OF STRONG THUNDERSTORMS WILL AFFECT SENECA...SOUTHERN CAYUGA
AND WESTERN ONONDAGA COUNTIES...

* AT 942 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING SMALL HAIL...
  STRONG GUSTY WINDS...AND VERY HEAVY RAIN.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM WATERLOO TO KENDAIA...AND
  MOVING EAST AT 30 MPH.

* STRONG THUNDERSTORMS WILL BE NEAR...
  TYRE AND SENECA FALLS AT 955 AM EDT...
  MONTEZUMA AND LEHIGH VLY JCT AT 1000 AM EDT...
  WILLETS AND UNION SPRINGS AT 1005 AM EDT...
  LEVANNA AT 1010 AM EDT...
  THROOPSVILLE AND MAPLETON AT 1015 AM EDT...
  VENICE CENTER AND SENNETT AT 1020 AM EDT...
  JORDAN AND WYCKOFF AT 1025 AM EDT...
  ELBRIDGE AND JACKS REEF AT 1030 AM EDT...

THESE STORMS HAVE THE POTENTIAL TO BECOME SEVERE AND PRODUCE LARGE
HAIL AND/OR DAMAGING WINDS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE
INDOORS IMMEDIATELY

IF ON OR NEAR THE NORTHERN HALVES OF SENECA AND CAYUGA LAKES...AS
WELL AS OWASCO...OTISCO AND SKANEATELES LAKES...SEEK SHELTER NOW.
GET OUT OF THE WATER AND MOVE INDOORS OR INSIDE A VEHICLE.

TAC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 2:37 PM EDTSevere Thunderstorm WarningBGMChemung, Schuyler, Steuben68 min
Jul 11, 3:08 PM EDTSevere Thunderstorm WarningBGMChemung, Cortland, Schuyler, Steuben, Tioga, Tompkins52 min
Jul 11, 3:25 PM EDTSevere Thunderstorm WarningBGMChemung, Tioga65 min
Jul 11, 7:41 PM EDTSevere Thunderstorm WarningBGMSteuben, Yates49 min

Nearby

Severe Thunderstorm Warnings in New York, 2009Every severe thunderstorm warning in 2009

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.