Alert archive / New York / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 114, NWS Binghamton, NY

July 11, 2009Steuben County, Yates County, New York

NWS Binghamton, NY issued this severe thunderstorm warning at Jul 11, 2009, 7:41 PM EDT for Steuben County, Yates County, New York. It was in force for 49 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, 7:41 PM EDT (23:41 UTC)
Expired
Jul 11, 2009, 8:30 PM EDT
In force
49 min
Issued by
NWS Binghamton, NY
Area
Storm-based polygon

Counties Steuben County, NY, Yates County, NY

The radar

The Binghamton radar (KBGM), 107 km from the middle of the area, began a volume at 23:43 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, 11.7 hours before the alert went out and 130 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, 3:32 PM EDT, 4 hours 9 minutes earlier.

Area forecast discussion, Jul 11, 3:32 PM EDT, 4 hours 9 minutes before
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Hazardous weather outlook, Jul 11, 5:36 PM EDT, 2 hours 5 minutes before
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In the hours before

Special weather statement, Jul 11, 2:02 PM EDT, 5 hours 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
202 PM EDT SAT JUL 11 2009

NYZ016-017-111845-
CAYUGA NY-SENECA NY-
202 PM EDT SAT JUL 11 2009

...STRONG THUNDERSTORM WILL AFFECT CENTRAL CAYUGA AND NORTHERN SENECA
COUNTIES...

* AT 202 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  STRONG THUNDERSTORM.  THIS STORM WAS LOCATED 8 MILES NORTHWEST OF
  WATERLOO...AND MOVING EAST AT 35 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  MAGEE AND SENECA FALLS AT 210 PM EDT...
  TYRE AND LEHIGH VLY JCT AT 215 PM EDT...
  MONTEZUMA AND CAYUGA AT 220 PM EDT...
  FOSTERVILLE AT 225 PM EDT...
  THROOPSVILLE AND AUBURN AT 230 PM EDT...
  SENNETT AT 235 PM EDT...

THIS STORM MAY PRODUCE SMALL HAIL AND STRONG... GUSTY WINDS.

THIS STORM HAS 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

MSE
Local storm report, Jul 11, 4:14 PM EDT, 3 hours 27 minutes before
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Special weather statement, Jul 11, 6:09 PM EDT, 1 hour 32 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 9:56 AM EDTSevere Thunderstorm WarningBGMCayuga, Onondaga, Seneca42 min
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

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.