Alert archive / New York / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 23, NWS Burlington, VT

July 11, 2019Franklin County, St. Lawrence County, New York

NWS Burlington, VT issued this severe thunderstorm warning at Jul 11, 2019, 6:08 PM EDT for Franklin County, St. Lawrence County, New York. It was in force for 52 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, 2019, 6:08 PM EDT (22:08 UTC)
Expired
Jul 11, 2019, 7:00 PM EDT
In force
52 min
Issued by
NWS Burlington, VT
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Franklin County, NY, St. Lawrence County, NY

The radar

The Ft Drum radar (KTYX), 117 km from the middle of the area, began a volume at 22:09 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
Jul 11, 5:37 PM EDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Albany, NY (KALY), launched 12:00Z, 10.1 hours before the alert went out and 218 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, Albany, NY at 12:00Z on 2019-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 138 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, Albany, NY at 12:00Z on 2019-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
138 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
1097 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The office that day

Everything else NWS Burlington, VT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 11, 2:29 PM EDTSpecial Weather StatementBTVWashington46 min
Jul 11, 10:39 AM EDTSpecial Weather StatementBTVSt. Lawrence51 min
Jul 11, 4:53 PM EDTSpecial Weather StatementBTVClinton37 min
Jul 11, 5:06 PM EDTSpecial Weather StatementBTVSt. Lawrence39 min
Jul 11, 5:21 PM EDTSevere Thunderstorm WarningBTVFranklin, St. Lawrence54 min
Jul 11, 5:33 PM EDTSpecial Weather StatementBTVClinton57 min
Jul 11, 5:37 PM EDTSpecial Weather StatementBTVSt. Lawrence53 min
Jul 11, 6:17 PM EDTSpecial Weather StatementBTVSt. Lawrence28 min
Jul 11, 6:44 PM EDTSpecial Weather StatementBTVSt. Lawrence46 min
Jul 11, 6:52 PM EDTAreal Flood WarningBTVFranklin, St. Lawrence3 hr
Jul 11, 7:30 PM EDTSpecial Weather StatementBTVClinton45 min
Jul 11, 7:33 PM EDTSpecial Weather StatementBTVFranklin, St. Lawrence42 min
Jul 11, 7:39 PM EDTSevere Thunderstorm WarningBTVSt. Lawrence66 min

Nearby

Severe Thunderstorm Warnings in New York, 2019Every severe thunderstorm warning in 2019

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.