Alert archive / Connecticut / Tornado Warnings in 2018

Tornado Warning 8, NWS Boston/Norton, MA

August 4, 2018Providence County, Rhode Island; Northeastern Connecticut Planning Region, Connecticut; Worcester County, Massachusetts

NWS Boston/Norton, MA issued this tornado warning at Aug 4, 2018, 9:35 AM EDT for Providence County, Rhode Island; Northeastern Connecticut Planning Region, Connecticut; Worcester County, Massachusetts. It was in force for 25 min. 4 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: Aug 4, 2018, 9:35 AM EDT (13:35 UTC)
Expired: Aug 4, 2018, 10:00 AM EDT
In force: 25 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Northeastern Connecticut Planning Region, CT, Worcester County, MA, Providence County, RI

The radar

The Boston radar (KBOX), 62 km from the middle of the area, began a volume at 13:35 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
Aug 4, 9:45 AM EDT	TSTM WND DMG	Webster, MA	TREES AND WIRES DOWN ON ROUTE 198 BLOCKING ROAD NEAR STURBRIDGE LINE.
Aug 4, 9:48 AM EDT	TORNADO	Dudley, MA	* 1 INJ * A HIGH END EF-1 TORNADO, 110 MPH, STRUCK DUDLEY AND WEBSTER, WITH SIGNIFICANT DAMAGE IN WEBSTER. IT WAS 300 YARDS WIDE, 0.5 MILES IN LENGTH, AND LASTED FROM 948 TO 949 AM. THERE WAS ONE MINOR INJURY. THE TORNADO TOUCHED DOWN IN EASTERN DUDLEY FRO
Aug 4, 10:00 AM EDT	TSTM WND DMG	Webster, MA	DOWNED TREE LIMBS AND UTILITY POLES ON MAIN STREET NEAR RAILROAD CROSSING.
Aug 4, 10:05 AM EDT	TSTM WND DMG	Webster, MA	MAIN STREET...CHASE AVENUE...AND PLEASANT STREET...MANY TREES AND POWER LINES DOWN. PARTIAL BUILDING COLLAPSE TO METRO PCS ON MAIN STREET. SEVERAL OTHER STRUCTURES ON MAIN STREET WITH ROOF DAMAGE.

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 1.6 hours before the alert went out and 162 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: 1326 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 507 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 150 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

As transmitted.

577 
WFUS51 KBOX 041335
TORBOX
CTC013-015-MAC027-RIC007-041400-
/O.NEW.KBOX.TO.W.0008.180804T1335Z-180804T1400Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Boston/Norton MA
935 AM EDT SAT AUG 4 2018

The National Weather Service in Boston/Norton has issued a

* Tornado Warning for...
  Northeastern Windham County in northern Connecticut...
  Northeastern Tolland County in northern Connecticut...
  Southeastern Worcester County in central Massachusetts...
  Northwestern Providence County in Rhode Island...

* Until 1000 AM EDT.
    
* At 935 AM EDT, a severe thunderstorm capable of producing a tornado
  was located over Woodstock, or 16 miles northeast of Mansfield,
  moving east at 20 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 dangerous storm will be near...
  Southbridge around 945 AM EDT.
  Thompson around 950 AM EDT.
  Webster, Charlton, Dudley and Douglas around 1000 AM 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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 4227 7175 4206 7156 4192 7210 4203 7214
TIME...MOT...LOC 1335Z 250DEG 18KT 4200 7205 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JWD

2 follow-up statements

234 
WWUS51 KBOX 041342
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
942 AM EDT SAT AUG 4 2018

CTC013-015-MAC027-RIC007-041400-
/O.CON.KBOX.TO.W.0008.000000T0000Z-180804T1400Z/
Windham CT-Tolland CT-Worcester MA-Providence RI-
942 AM EDT SAT AUG 4 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 AM EDT FOR
NORTHEASTERN WINDHAM...NORTHEASTERN TOLLAND...SOUTHEASTERN WORCESTER
AND NORTHWESTERN PROVIDENCE COUNTIES...
    
At 941 AM EDT, a severe thunderstorm capable of producing a tornado
was located near Woodstock, moving east northeast at 20 mph.

As of 941 AM, there has been no confirmed tornado.

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 dangerous storm will be near...
  Thompson around 950 AM EDT.
  Webster, Charlton, Dudley and Douglas around 1000 AM 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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 4227 7175 4206 7156 4192 7210 4203 7214
TIME...MOT...LOC 1341Z 250DEG 18KT 4201 7201 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JWD

004 
WWUS51 KBOX 041350
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
950 AM EDT SAT AUG 4 2018

CTC013-RIC007-041358-
/O.CAN.KBOX.TO.W.0008.000000T0000Z-180804T1400Z/
Tolland CT-Providence RI-
950 AM EDT SAT AUG 4 2018

...THE TORNADO WARNING FOR NORTHEASTERN TOLLAND AND NORTHWESTERN
PROVIDENCE COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. **! Therefore, the warning has been cancelled.

&&

LAT...LON 4215 7175 4204 7166 4200 7196 4205 7198
TIME...MOT...LOC 1348Z 250DEG 18KT 4202 7196 

$$

CTC015-MAC027-041400-
/O.CON.KBOX.TO.W.0008.000000T0000Z-180804T1400Z/
Windham CT-Worcester MA-
950 AM EDT SAT AUG 4 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 AM EDT FOR NORTH
CENTRAL WINDHAM AND SOUTH CENTRAL WORCESTER COUNTIES...
    
At 948 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Dudley, or 18 miles southwest of Worcester, moving
east at 20 mph.

The media reported downed trees along Route 169 in Woodstock and 
Route 198. It is unknown if this damage is from a tornado.

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 dangerous storm will be near...
  Thompson around 950 AM EDT.
  Webster and Douglas around 955 AM 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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 4215 7175 4204 7166 4200 7196 4205 7198
TIME...MOT...LOC 1348Z 250DEG 18KT 4202 7196 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JWD

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 4, 9:31 AM EDT	Severe Thunderstorm Warning	BOX	Providence	44 min
Aug 4, 10:00 AM EDT	Areal Flood Advisory	BOX	Bristol, Kent, Providence	2 hr
Aug 4, 11:14 AM EDT	Areal Flood Advisory	BOX	Bristol, Kent, Newport, Providence, Washington	3 hr
Aug 4, 11:31 AM EDT	Flash Flood Warning	BOX	Bristol, Kent, Newport, Providence, Washington	3 hr
Aug 4, 12:08 PM EDT	Flash Flood Warning	BOX	Bristol, Newport	3 hr
Aug 4, 1:54 PM EDT	Special Weather Statement	BOX	Newport	66 min
Aug 4, 2:42 PM EDT	Flash Flood Warning	BOX	Newport	45 min
Aug 4, 7:02 AM EDT	Areal Flood Advisory	BOX	Capitol Planning Region	58 min
Aug 4, 7:53 AM EDT	Areal Flood Advisory	BOX	Capitol Planning Region	3 hr
Aug 4, 8:48 AM EDT	Areal Flood Advisory	BOX	Capitol Planning Region, Northeastern Connecticut Planning Region	3 hr
Aug 4, 8:54 AM EDT	Special Weather Statement	BOX		51 min
Aug 4, 5:56 AM EDT	Special Weather Statement	BOX	Franklin, Hampden, Hampshire	49 min
Aug 4, 9:57 AM EDT	Tornado Warning	BOX	Worcester	32 min
Aug 4, 10:07 AM EDT	Tornado Warning	BOX	Middlesex, Worcester	38 min
Aug 4, 10:24 AM EDT	Flash Flood Warning	BOX	Middlesex, Norfolk, Worcester	106 min
Aug 4, 10:54 AM EDT	Areal Flood Advisory	BOX	Bristol, Essex, Middlesex, Norfolk, Suffolk	2 hr
Aug 4, 11:23 AM EDT	Flash Flood Warning	BOX	Essex, Middlesex, Norfolk, Suffolk	93 min
Aug 4, 11:43 AM EDT	Special Weather Statement	BOX	Suffolk	47 min
Aug 4, 11:46 AM EDT	Special Marine Warning	BOX		119 min
Aug 4, 1:46 PM EDT	Special Marine Warning	BOX		44 min
Aug 4, 1:47 PM EDT	Special Marine Warning	BOX		43 min
Aug 4, 2:17 PM EDT	Flash Flood Warning	BOX	Bristol, Plymouth	113 min
Aug 4, 4:10 PM EDT	Special Marine Warning	BOX		35 min
Aug 4, 4:26 PM EDT	Special Weather Statement	BOX	Dukes	34 min
Aug 4, 4:30 PM EDT	Severe Thunderstorm Warning	BOX	Barnstable, Dukes	45 min
Aug 4, 4:40 PM EDT	Special Marine Warning	BOX		35 min
Aug 4, 5:14 PM EDT	Special Marine Warning	BOX		15 min
Aug 4, 5:18 PM EDT	Special Weather Statement	BOX	Barnstable	42 min
Aug 4, 5:23 PM EDT	Areal Flood Advisory	BOX	Barnstable	2 hr
Aug 4, 5:36 PM EDT	Special Weather Statement	BOX	Middlesex	39 min
Aug 4, 6:09 PM EDT	Special Weather Statement	BOX	Worcester	51 min
Aug 4, 6:36 PM EDT	Special Weather Statement	BOX	Hampden	39 min
Aug 4, 6:58 PM EDT	Special Weather Statement	BOX	Worcester	47 min

Nearby

Tornado Warnings in Connecticut, 2018 Tornado Warnings in Rhode Island, 2018 Tornado Warnings in Massachusetts, 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.