Alert archive / Connecticut / Tornado Warnings in 2018

Tornado Warning 3, NWS New York, NY

May 15, 2018Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Connecticut

NWS New York, NY issued this tornado warning at May 15, 2018, 5:07 PM EDT for Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Connecticut. It was in force for 23 min. 8 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 15, 2018, 5:07 PM EDT (21:07 UTC)
Expired: May 15, 2018, 5:30 PM EDT
In force: 23 min
Issued by: NWS New York, NY
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT

The radar

The Brookhaven radar (KOKX), 70 km from the middle of the area, began a volume at 21:06 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 was reported inside it

Time	Report	Where	Remark
May 15, 5:12 PM EDT	TSTM WND DMG	1 Ssw Deaconwood, CT	MULTIPLE LARGE TREES DOWN IN THE DEACONWOOD NEIGHBORHOOD ALONG SORGHUM MILL DRIVE.
May 15, 5:14 PM EDT	TSTM WND DMG	1 Ese Mount Carmel, CT	NUMEROUS TREES AND BRANCHES DOWN ON THE QUINNIPIAC UNIVERSITY CAMPUS. TWO CARS ALSO DAMAGED.
May 15, 5:14 PM EDT	TSTM WND DMG	Bethany, CT	TWO BARNS DESTROYED
May 15, 5:15 PM EDT	TSTM WND DMG	Cheshire, CT	* 1 INJ * LARGE TREE FELL ON HOUSE, INJURING ONE PERSON.
May 15, 5:16 PM EDT	TSTM WND DMG	Hamden, CT	NUMEROUS TREES AND WIRES DOWN AROUND TOWN. ROADS IMPASSABLE.
May 15, 5:33 PM EDT	TSTM WND DMG	Durham, CT	NUMEROUS TREES DOWN
May 15, 5:39 PM EDT	TSTM WND DMG	Moodus, CT	NUMEROUS TREES DOWN
May 15, 5:39 PM EDT	TSTM WND DMG	North Guilford, CT	NUMEROUS TREES DOWN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 15, 1:46 PM EDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.1 hours before the alert went out and 70 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 909 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

946 
WFUS51 KOKX 152107
TOROKX
CTC007-009-152130-
/O.NEW.KOKX.TO.W.0003.180515T2107Z-180515T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service New York NY
507 PM EDT TUE MAY 15 2018

The National Weather Service in Upton NY has issued a

* Tornado Warning for...
  Central New Haven County in southern Connecticut...
  Middlesex County in southern Connecticut...

* Until 530 PM EDT.
    
* At 507 PM EDT, a severe thunderstorm capable of producing a tornado
  was located over Bethany, or near Naugatuck, moving east at 65 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Wallingford around 510 PM EDT.
  Branford and North Haven around 515 PM EDT.
  Guilford and Durham around 520 PM EDT.
  North Madison around 525 PM EDT.
  Chester and East Haddam around 530 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 4153 7243 4153 7236 4143 7236 4142 7243
      4141 7242 4139 7241 4139 7238 4138 7237
      4137 7238 4136 7237 4135 7237 4135 7238
      4130 7237 4133 7306 4151 7308 4154 7244
TIME...MOT...LOC 2107Z 269DEG 55KT 4143 7295 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

Goodman

1 follow-up statement

430 
WWUS51 KOKX 152124
SVSOKX

Severe Weather Statement
National Weather Service New York NY
524 PM EDT TUE MAY 15 2018

CTC007-009-152130-
/O.CON.KOKX.TO.W.0003.000000T0000Z-180515T2130Z/
New Haven CT-Middlesex CT-
524 PM EDT TUE MAY 15 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR EAST
CENTRAL NEW HAVEN AND MIDDLESEX COUNTIES...
    
At 524 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Durham, moving east at 60 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
east central New Haven and Middlesex Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Motorists should not take shelter under highway overpasses. If you
cannot safely drive away from the tornado, as a last resort, either
park your vehicle and stay put, or abandon your vehicle and lie down
in a low lying area and protect yourself from flying debris.

&&

LAT...LON 4153 7243 4153 7236 4143 7236 4142 7243
      4140 7242 4139 7241 4139 7238 4138 7237
      4137 7238 4135 7237 4135 7238 4134 7238
      4130 7237 4130 7248 4138 7284 4152 7280
      4154 7245
TIME...MOT...LOC 2124Z 272DEG 50KT 4143 7265 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Goodman

The office that day

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

Issued	Product	Office	Counties	Lasted
May 15, 3:34 PM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region, Naugatuck Valley Planning Region	86 min
May 15, 4:40 PM EDT	Areal Flood Advisory	OKX	Greater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region	2 hr
May 15, 4:43 PM EDT	Tornado Warning	OKX	Greater Bridgeport Planning Region, Naugatuck Valley Planning Region	32 min
May 15, 4:51 PM EDT	Severe Thunderstorm Warning	OKX	Greater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region	54 min
May 15, 5:28 PM EDT	Severe Thunderstorm Warning	OKX	Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region	47 min

Nearby

Tornado Warnings in Connecticut, 2018 Every tornado warning in 2018 Tornadoes in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.