Alert archive / New York / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 145, NWS Binghamton, NY

August 10, 2009Cayuga County, Seneca County, Yates County, New York

NWS Binghamton, NY issued this severe thunderstorm warning at Aug 10, 2009, 2:56 PM EDT for Cayuga County, Seneca 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
Aug 10, 2009, 2:56 PM EDT (18:56 UTC)
Expired
Aug 10, 2009, 3:45 PM EDT
In force
49 min
Issued by
NWS Binghamton, NY
Area
Storm-based polygon

Counties Cayuga County, NY, Seneca County, NY, Yates County, NY

The radar

The Binghamton radar (KBGM), 97 km from the middle of the area, began a volume at 18:59 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, 6.9 hours before the alert went out and 153 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 2009-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 326 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 2009-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 square meters per square second.193958Sfc1 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
326 J/kg
Mixed-layer CIN
-97 J/kg
Mixed-layer LCL
980 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
65 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

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 Aug 10, 2:00 PM EDT, 56 minutes earlier.

Area forecast discussion, Aug 10, 2:00 PM EDT, 56 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Hazardous weather outlook, Aug 10, 2:41 PM EDT, 15 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

In the hours before

Special weather statement, Aug 10, 2:23 PM EDT, 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
223 PM EDT MON AUG 10 2009

NYZ015-022-101915-
STEUBEN NY-YATES NY-
223 PM EDT MON AUG 10 2009

...STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL STEUBEN AND WESTERN
YATES COUNTIES...

* AT 223 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  STRONG THUNDERSTORM.  THIS STORM WAS LOCATED 6 MILES WEST OF VINE
  VALLEY...AND MOVING EAST AT 15 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  VINE VALLEY AT 245 PM EDT...
  MIDDLESEX AND ITALY AT 255 PM EDT...
  ITALY HILL AT 300 PM EDT...
  POTTER AT 305 PM EDT...
  FRIEND AT 310 PM EDT...
  YATESVILLE AND GUYANOGA AT 315 PM EDT...

THIS STORM HAS THE POTENTIAL TO BECOME SEVERE AND PRODUCE LARGE HAIL
AND/OR DAMAGING WINDS.
Special weather statement, Aug 10, 2:48 PM EDT, 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
248 PM EDT MON AUG 10 2009

NYZ015-022>025-101945-
CHEMUNG NY-SCHUYLER NY-STEUBEN NY-TOMPKINS NY-YATES NY-
248 PM EDT MON AUG 10 2009

...STRONG THUNDERSTORM WILL AFFECT CENTRAL STEUBEN...NORTHERN
CHEMUNG...SCHUYLER...SOUTHEASTERN YATES AND SOUTHWESTERN TOMPKINS
COUNTIES...

* AT 247 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  STRONG THUNDERSTORM.  THIS STORM WAS LOCATED NEAR HAMMONDSPORT...
  AND MOVING EAST AT 20 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  SONORA AT 255 PM EDT...
  KEUKA AT 300 PM EDT...
  BRADFORD AND WAYNE AT 305 PM EDT...
  TYRONE AND WESTON AT 310 PM EDT...
  ALTAY AND MONTEREY AT 315 PM EDT...
  READING CENTER AND TOWNSEND AT 330 PM EDT...
  ROCK STREAM AND GLENORA AT 335 PM EDT...
  WATKINS GLEN AND WEDGEWOOD AT 340 PM EDT...

THIS STORM HAS THE POTENTIAL TO BECOME SEVERE AND PRODUCE LARGE HAIL
AND/OR DAMAGING WINDS.

DJN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 8:51 PM EDTAreal Flood AdvisoryBGMBroome, Chenango3 hr
Aug 9, 9:29 PM EDTAreal Flood AdvisoryBGMCayuga, Onondaga3 hr
Aug 9, 10:00 PM EDTSevere Thunderstorm WarningBGMCayuga, Chenango, Cortland, Onondaga28 min
Aug 9, 11:15 PM EDTFlash Flood WarningBGMCayuga, Cortland, Onondaga6 hr
Aug 9, 11:17 PM EDTSevere Thunderstorm WarningBGMSteuben43 min
Aug 9, 11:30 PM EDTFlash Flood WarningBGMDelaware, Sullivan5 hr
Aug 10, 12:00 AM EDTAreal Flood AdvisoryBGMChenango, Cortland3 hr
Aug 10, 12:49 AM EDTFlash Flood WarningBGMBroome, Chenango, Cortland, Delaware, Otsego6 hr
Aug 10, 2:06 AM EDTRiver Flood WarningBGMDelaware, Sullivan5 hr
Aug 10, 7:50 AM EDTFlash Flood WatchBGMBroome, Cayuga, Chemung, Chenango, Cortland, Delaware and 11 more14 hr
Aug 10, 3:24 PM EDTAreal Flood AdvisoryBGMCayuga, Onondaga, Seneca4 hr
Aug 10, 3:43 PM EDTSevere Thunderstorm WarningBGMCayuga, Cortland, Onondaga, Seneca62 min
Aug 10, 3:46 PM EDTSevere Thunderstorm WarningBGMCayuga, Seneca, Tompkins44 min
Aug 10, 4:13 PM EDTSevere Thunderstorm WarningBGMChenango, Cortland, Madison, Onondaga, Tompkins62 min
Aug 10, 4:24 PM EDTTornado WarningBGMCortland, Tompkins30 min
Aug 10, 4:29 PM EDTSevere Thunderstorm WarningBGMMadison, Onondaga46 min
Aug 10, 4:38 PM EDTSevere Thunderstorm WarningBGMCayuga, Schuyler, Seneca, Tompkins, Yates52 min
Aug 10, 4:50 PM EDTSevere Thunderstorm WarningBGMBroome, Chenango, Cortland55 min
Aug 10, 4:56 PM EDTSevere Thunderstorm WarningBGMBroome, Cortland, Tompkins49 min
Aug 10, 5:00 PM EDTSevere Thunderstorm WarningBGMTioga60 min
Aug 10, 5:01 PM EDTFlash Flood WarningBGMCortland3 hr
Aug 10, 5:03 PM EDTSevere Thunderstorm WarningBGMMadison, Oneida57 min
Aug 10, 5:18 PM EDTFlash Flood WarningBGMTompkins3 hr
Aug 10, 5:23 PM EDTSevere Thunderstorm WarningBGMBroome, Chenango, Tioga52 min
Aug 10, 5:34 PM EDTSevere Thunderstorm WarningBGMBroome, Chenango, Delaware, Otsego56 min
Aug 10, 5:41 PM EDTFlash Flood WarningBGMBroome, Chenango3 hr
Aug 10, 5:55 PM EDTAreal Flood AdvisoryBGMBroome, Tioga117 min
Aug 10, 6:06 PM EDTSevere Thunderstorm WarningBGMDelaware54 min
Aug 10, 6:12 PM EDTSevere Thunderstorm WarningBGMBroome, Chenango, Delaware, Sullivan63 min
Aug 10, 6:15 PM EDTSevere Thunderstorm WarningBGMOneida30 min
Aug 10, 6:24 PM EDTSevere Thunderstorm WarningBGMSullivan66 min
Aug 10, 6:54 PM EDTSevere Thunderstorm WarningBGMDelaware, Sullivan66 min
Aug 10, 6:57 PM EDTAreal Flood AdvisoryBGMBroome, Delaware, Sullivan100 min
Aug 10, 5:31 PM EDTSevere Thunderstorm WarningBGMLackawanna44 min
Aug 10, 6:02 PM EDTAreal Flood AdvisoryBGMLackawanna3 hr

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.