Alert archive / New York / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 74, NWS Burlington, VT
NWS Burlington, VT issued this severe thunderstorm warning at Sep 11, 2013, 8:51 PM EDT for St. Lawrence County, New York. It was in force for 54 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
- Sep 11, 2013, 8:51 PM EDT (00:51 UTC)
- Expired
- Sep 11, 2013, 9:45 PM EDT
- In force
- 54 min
- Issued by
- NWS Burlington, VT
- Area
- Storm-based polygon
County St. Lawrence County, NY
The radar
The Ft Drum radar (KTYX), 94 km from the middle of the area, began a volume at 00:54 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 11, 2:33 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Albany, NY (KALY), launched 00:00Z, 0.9 hours before the alert went out and 226 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.
- Mixed-layer CAPE
- 50 J/kg
- Mixed-layer CIN
- -252 J/kg
- Mixed-layer LCL
- 1919 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -114 m²/s²
- 0-3 km storm-relative helicity
- -96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Burlington, VT wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 11, 8:22 PM EDT, 29 minutes earlier.
Area forecast discussion, Sep 11, 8:22 PM EDT, 29 minutes before
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</html>Hazardous weather outlook, Sep 11, 2:41 PM EDT, 6 hours 10 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BURLINGTON VT 241 PM EDT WED SEP 11 2013 NYZ026>031-034-035-087-VTZ001>012-016>019-121845- NORTHERN ST. LAWRENCE-NORTHERN FRANKLIN-EASTERN CLINTON- SOUTHEASTERN ST. LAWRENCE-SOUTHERN FRANKLIN-WESTERN CLINTON- WESTERN ESSEX-EASTERN ESSEX-SOUTHWESTERN ST. LAWRENCE-GRAND ISLE- WESTERN FRANKLIN-ORLEANS-ESSEX-WESTERN CHITTENDEN-LAMOILLE-CALEDONIA- WASHINGTON-WESTERN ADDISON-ORANGE-WESTERN RUTLAND-WINDSOR- EASTERN FRANKLIN-EASTERN CHITTENDEN-EASTERN ADDISON-EASTERN RUTLAND- 241 PM EDT WED SEP 11 2013 ...SEVERE THUNDERSTORM WATCH 521 IN EFFECT UNTIL 10 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN NEW YORK...CENTRAL VERMONT...NORTHEAST VERMONT...NORTHWEST VERMONT AND SOUTHERN VERMONT. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. CONDITIONS WILL CONTINUE TO BECOME FAVORABLE FOR THE DEVELOPMENT OF STRONG TO POSSIBLY SEVERE THUNDERSTORMS ACROSS THE NORTH COUNTRY THIS AFTERNOON AND THE FIRST HALF OF THE NIGHT. FOR THIS EVENT THERE WILL BE TWO DIFFERENT THREATS FOR STORMS. THE FIRST WILL BE OUT ACROSS THE SAINT LAWRENCE VALLEY OF NEW YORK WHERE A LINE OF STORMS IS EXPECTED TO FOR OVER SOUTHEAST ONTARIO PROVINCE AND MOVE INTO THE SAINT LAWRENCE VALLEY LATE THIS AFTERNOON OR EVENING. THE MAIN THREAT WITH THIS LINE WOULD BE STRONG WINDS...HEAVY DOWNPOURS...AND FREQUENT LIGHTNING. THE OTHER THREAT WILL BE STORMS FORMING OVER THE CENTRAL AND EASTERN PORTIONS OF NEW YORK STATE AND MOVING EAST AND NORTHEAST INTO THE NORTHERN ADIRONDACKS...THE CHAMPLAIN VALLEY...AND THE REMAINDER OF VERMONT. THESE STORMS WILL BE OF SHORTER DURATION AND MORE ISOLATED TO SCATTERED IN NATURE...BUT WILL STILL HAVE THE POTENTIAL TO PRODUCE STRONG GUSTY WINDS...SMALL HAIL...FREQUENT LIGHTNING...AND BRIEF HEAVY DOWNPOURS. THE MOST FAVORABLE TIMING FOR THESE STORMS WILL BE BETWEEN 500 PM AND MIDNIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. SHOWERS AND EMBEDDED THUNDERSTORMS WILL BE WIDESPREAD ACROSS THE NORTH COUNTRY ON THURSDAY WITH HEAVY RAINFALL POSSIBLE. COOLER AND DRIER WEATHER EXPECTED FOR THE REST OF THE PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED.
In the hours before
Local storm report, Sep 11, 8:20 PM EDT, 31 minutes before
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</html>Local storm report, Sep 11, 8:22 PM EDT, 29 minutes before
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</html>Local storm report, Sep 11, 8:29 PM EDT, 22 minutes before
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</html>Local storm report, Sep 11, 8:39 PM EDT, 12 minutes before
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</html>Local storm report, Sep 11, 8:45 PM EDT, 6 minutes before
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</html>Local storm report, Sep 11, 8:49 PM EDT, 2 minutes before
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</html>The office that day
Everything else NWS Burlington, VT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 8:14 PM EDT | Severe Thunderstorm Warning | BTV | Addison, Orange, Rutland, Washington, Windsor | 46 min |
| Sep 11, 9:29 PM EDT | Special Weather Statement | BTV | Chittenden, Grand Isle, Lamoille | 61 min |
| Sep 11, 10:17 PM EDT | Special Weather Statement | BTV | Essex, Franklin, Lamoille, Orleans | 88 min |
| Sep 11, 11:50 PM EDT | Special Weather Statement | BTV | Essex, Franklin, Grand Isle, Lamoille, Orleans | 3 hr |
| Sep 12, 2:17 PM EDT | Special Weather Statement | BTV | Addison, Orange, Rutland, Windsor | 58 min |
| Sep 12, 3:12 PM EDT | Special Weather Statement | BTV | Washington | 63 min |
| Sep 12, 3:49 PM EDT | Special Weather Statement | BTV | Rutland, Windsor | 56 min |
| Sep 12, 4:15 PM EDT | Special Weather Statement | BTV | Caledonia, Essex, Orange | 60 min |
| Sep 12, 4:47 PM EDT | Special Weather Statement | BTV | Windsor | 58 min |
| Sep 11, 9:39 PM EDT | Special Weather Statement | BTV | Franklin, St. Lawrence | 66 min |
| Sep 11, 10:44 PM EDT | Special Weather Statement | BTV | Franklin, St. Lawrence | 91 min |
| Sep 11, 10:51 PM EDT | Flash Flood Warning | BTV | St. Lawrence | 4 hr |
| Sep 12, 12:14 AM EDT | Special Weather Statement | BTV | Clinton, Franklin, St. Lawrence | 2 hr |
| Sep 12, 2:38 AM EDT | Flash Flood Warning | BTV | St. Lawrence | 4 hr |
Nearby
Severe Thunderstorm Warnings in New York, 2013Every severe thunderstorm warning in 2013
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.