Alert archive / New York / Severe Thunderstorm Watches in 2016

Severe Thunderstorm Watch 395

July 18, 20167 states

The Storm Prediction Center issued this severe thunderstorm watch at Jul 18, 2016, 12:05 PM EDT for 7 states. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Jul 18, 2016, 12:05 PM EDT (16:05 UTC)
Expired
Jul 18, 2016, 8:00 PM EDT
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 92 counties

Capitol Planning Region, CT, Greater Bridgeport Planning Region, CT, Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT, Northeastern Connecticut Planning Region, CT, Northwest Hills Planning Region, CT, Southeastern Connecticut Planning Region, CT, Berkshire County, MA, Bristol County, MA, Essex County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Norfolk County, MA, Plymouth County, MA, Suffolk County, MA, Worcester County, MA, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Albany County, NY, Bronx County, NY, Broome County, NY, Cayuga County, NY, Chemung County, NY, Chenango County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Dutchess County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Herkimer County, NY, Kings County, NY, Madison County, NY, Montgomery County, NY, Nassau County, NY, New York County, NY, Oneida County, NY, Onondaga County, NY, Orange County, NY, Otsego County, NY, Putnam County, NY, Queens County, NY, Rensselaer County, NY, Richmond County, NY, Rockland County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Suffolk County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Westchester County, NY, Yates County, NY, Bradford County, PA, Carbon County, PA, Lackawanna County, PA, Lehigh County, PA, Luzerne County, PA, Monroe County, PA, Northampton County, PA, Pike County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI, Bennington County, VT, Windham County, VT

The radar

The Albany radar (KENX), 40 km from the middle of the area, began a volume at 16:06 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
10%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
60%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

36 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jul 18, 12:12 PM EDTSevere Thunderstorm WarningBUFCayuga, Oswego, Wayne63 min
Jul 18, 12:22 PM EDTSevere Thunderstorm WarningBGMMadison, Onondaga53 min
Jul 18, 12:28 PM EDTSevere Thunderstorm WarningALYAlbany, Schoharie47 min
Jul 18, 12:35 PM EDTSevere Thunderstorm WarningBGMLuzerne55 min
Jul 18, 1:04 PM EDTSevere Thunderstorm WarningALYSaratoga, Warren, Washington56 min
Jul 18, 1:07 PM EDTSevere Thunderstorm WarningALYAlbany, Columbia, Rensselaer38 min
Jul 18, 1:20 PM EDTSevere Thunderstorm WarningBGMLackawanna, Luzerne40 min
Jul 18, 1:25 PM EDTSevere Thunderstorm WarningALYBerkshire43 min
Jul 18, 1:30 PM EDTSevere Thunderstorm WarningALYWashington45 min
Jul 18, 1:42 PM EDTSevere Thunderstorm WarningBOXFranklin, Hampshire48 min
Jul 18, 1:43 PM EDTSevere Thunderstorm WarningALYBennington, Windham62 min
Jul 18, 1:48 PM EDTSevere Thunderstorm WarningPHICarbon, Monroe57 min
Jul 18, 2:05 PM EDTSevere Thunderstorm WarningBGMCayuga, Onondaga25 min
Jul 18, 2:13 PM EDTSevere Thunderstorm WarningALYNorthwest Hills Planning Region62 min
Jul 18, 2:18 PM EDTSevere Thunderstorm WarningBOXFranklin, Worcester27 min
Jul 18, 2:28 PM EDTSevere Thunderstorm WarningPHICarbon, Lehigh, Northampton47 min
Jul 18, 2:30 PM EDTSevere Thunderstorm WarningBOXFranklin, Worcester45 min
Jul 18, 2:35 PM EDTSevere Thunderstorm WarningALYDutchess, Ulster40 min
Jul 18, 2:51 PM EDTSevere Thunderstorm WarningPHIHunterdon39 min
Jul 18, 2:56 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Worcester34 min
Jul 18, 3:09 PM EDTSevere Thunderstorm WarningOKXOrange36 min
Jul 18, 3:14 PM EDTSevere Thunderstorm WarningALYNorthwest Hills Planning Region31 min
Jul 18, 3:17 PM EDTSevere Thunderstorm WarningBOXEssex28 min
Jul 18, 3:22 PM EDTSevere Thunderstorm WarningBOXCapitol Planning Region38 min
Jul 18, 3:25 PM EDTSevere Thunderstorm WarningPHIHunterdon50 min
Jul 18, 3:38 PM EDTSevere Thunderstorm WarningOKXPutnam, Westchester37 min
Jul 18, 3:53 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Norfolk, Suffolk52 min
Jul 18, 3:56 PM EDTSevere Thunderstorm WarningBOXCapitol Planning Region, Northeastern Connecticut Planning Region64 min
Jul 18, 4:07 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Morris, Somerset38 min
Jul 18, 4:14 PM EDTSevere Thunderstorm WarningBOXMiddlesex, Norfolk, Suffolk46 min
Jul 18, 4:21 PM EDTSevere Thunderstorm WarningBGMCayuga, Cortland, Seneca, Tompkins54 min
Jul 18, 4:34 PM EDTSevere Thunderstorm WarningBOXNorfolk, Plymouth, Suffolk41 min
Jul 18, 4:40 PM EDTSevere Thunderstorm WarningOKXHudson, Union35 min
Jul 18, 4:42 PM EDTSevere Thunderstorm WarningBOXNortheastern Connecticut Planning Region18 min
Jul 18, 4:55 PM EDTSevere Thunderstorm WarningOKXKings, Queens20 min
Jul 18, 5:11 PM EDTSevere Thunderstorm WarningBGMChenango, Cortland41 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 4.1 hours before the alert went out and 211 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, Brookhaven, NY at 12:00Z on 2016-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Brookhaven, NY at 12:00Z on 2016-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 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
1 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
1554 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 18, 11:40 AM EDTMesoscale DiscussionSPC95 min
Jul 18, 3:21 PM EDTMesoscale DiscussionSPC84 min
Jul 18, 6:49 PM EDTMesoscale DiscussionSPC86 min
Jul 18, 10:32 AM EDTMesoscale DiscussionSPCAndroscoggin, Cumberland, Franklin, Kennebec, Lincoln, Oxford and 4 more118 min
Jul 18, 11:12 AM EDTSevere Thunderstorm WatchSPCAndroscoggin, Aroostook, Cumberland, Franklin, Hancock, Kennebec and 10 more9 hr
Jul 18, 1:42 PM EDTSevere Thunderstorm WatchSPCAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more6 hr
Jul 18, 3:09 PM EDTMesoscale DiscussionSPCAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more66 min
Jul 18, 6:22 PM EDTMesoscale DiscussionSPCAtlantic, Cape May, Cumberland113 min

Nearby

Severe Thunderstorm Watches in New York, 2016Severe Thunderstorm Watches in New Jersey, 2016Severe Thunderstorm Watches in Massachusetts, 2016Every severe thunderstorm watch in 2016

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.