Alert archive / New York / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 27, NWS Buffalo, NY

June 26, 2009Jefferson County, New York

NWS Buffalo, NY issued this severe thunderstorm warning at Jun 26, 2009, 3:11 PM EDT for Jefferson 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 outline as issued.

The facts

Issued
Jun 26, 2009, 3:11 PM EDT (19:11 UTC)
Expired
Jun 26, 2009, 4:00 PM EDT
In force
49 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon

County Jefferson County, NY

The radar

The Ft Drum radar (KTYX), 47 km from the middle of the area, began a volume at 19:12 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 26, 12:32 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.2 hours before the alert went out and 236 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 2009-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 974 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 2009-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 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
974 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
717 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KBUF 261911
SVRBUF
NYC045-262015-
/O.NEW.KBUF.SV.W.0027.090626T1911Z-090626T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
311 PM EDT FRI JUN 26 2009

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL JEFFERSON COUNTY IN CENTRAL NEW YORK

* UNTIL 415 PM EDT

* AT 310 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND  
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 22 
  MILES WEST OF WATERTOWN...AND MOVING SOUTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WATERTOWN BY 350 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT FRIDAY
EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4405 7568 4379 7594 4389 7617 4391 7614
      4394 7615 4399 7608 4395 7616 4396 7621
      4399 7622 4395 7629 4402 7632 4405 7631
      4403 7636 4404 7640 4406 7636 4410 7636
TIME...MOT...LOC 1911Z 293DEG 27KT 4404 7633

$$

RSH
2 follow-up statements
000 
WWUS51 KBUF 261949
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
349 PM EDT FRI JUN 26 2009

NYC045-262015-
/O.CON.KBUF.SV.W.0027.000000T0000Z-090626T2015Z/
JEFFERSON NY-
349 PM EDT FRI JUN 26 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SOUTHERN JEFFERSON COUNTY...

AT 345 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM BROWNVILLE TO 7 MILES WEST 
OF ADAMS CENTER...MOVING SOUTHEAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  CALCIUM AND WATERTOWN BY 355 PM EDT...
  FORT DRUM AND ADAMS CENTER BY 400 PM EDT...
  BLACK RIVER BY 405 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT FRIDAY
EVENING FOR WESTERN NEW YORK.

&&

LAT...LON 4407 7601 4405 7568 4379 7594 4389 7617
      4391 7614
TIME...MOT...LOC 1949Z 293DEG 27KT 4400 7596 4393 7601
          4388 7610

$$

RSH
000 
WWUS51 KBUF 262000
SVSBUF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
400 PM EDT FRI JUN 26 2009

NYC045-262010-
/O.CAN.KBUF.SV.W.0027.000000T0000Z-090626T2015Z/
JEFFERSON NY-
400 PM EDT FRI JUN 26 2009

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN JEFFERSON COUNTY IS
CANCELLED...

AT 400 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE SEVERE
THUNDERSTORM THAT PROMPTED THE WARNING HAD WEAKENED AND WAS NO LONGER
SEVERE...THUS THE WARNING HAS BEEN CANCELLED.

RADAR INDICATED THAT HEAVY RAIN...AND GUSTY WINDS WERE STILL 
POSSIBLE FROM THE REMAINING LINE OF THUNDERSTORMS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT FRIDAY
EVENING FOR WESTERN NEW YORK.

LAT...LON 4407 7601 4405 7568 4379 7594 4389 7617
      4391 7614
TIME...MOT...LOC 2000Z 293DEG 27KT 4397 7585 4390 7590
          4385 7599

$$

RSH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 8:01 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus, Erie, Wyoming31 min
Jun 25, 8:10 PM EDTSpecial Marine WarningBUF37 min
Jun 25, 8:14 PM EDTSpecial Marine WarningBUF31 min
Jun 26, 5:43 AM EDTSevere Thunderstorm WarningBUFCayuga, Wayne62 min
Jun 26, 12:10 PM EDTSevere Thunderstorm WarningBUFGenesee, Monroe65 min
Jun 26, 12:17 PM EDTSevere Thunderstorm WarningBUFAllegany, Livingston37 min
Jun 26, 12:28 PM EDTSpecial Marine WarningBUF44 min
Jun 26, 12:41 PM EDTSevere Thunderstorm WarningBUFMonroe, Orleans, Wayne64 min
Jun 26, 12:50 PM EDTSpecial Marine WarningBUF55 min
Jun 26, 1:06 PM EDTSpecial Marine WarningBUF84 min
Jun 26, 1:09 PM EDTSevere Thunderstorm WarningBUFMonroe66 min
Jun 26, 1:32 PM EDTFlash Flood WarningBUFMonroe, Ontario, Wayne3 hr
Jun 26, 1:34 PM EDTSevere Thunderstorm WarningBUFCayuga, Monroe, Ontario, Wayne56 min
Jun 26, 1:34 PM EDTSevere Thunderstorm WarningBUFAllegany29 min
Jun 26, 1:47 PM EDTFlash Flood WarningBUFAllegany3 hr
Jun 26, 2:23 PM EDTSevere Thunderstorm WarningBUFLivingston, Monroe, Ontario67 min
Jun 26, 2:47 PM EDTSpecial Marine WarningBUF88 min
Jun 26, 3:46 PM EDTSevere Thunderstorm WarningBUFJefferson, Oswego31 min
Jun 26, 4:13 PM EDTSpecial Marine WarningBUF30 min
Jun 26, 4:39 PM EDTFlash Flood WarningBUFWyoming87 min
Jun 26, 5:27 PM EDTSpecial Marine WarningBUF32 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.