Alert archive / Rhode Island / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 78, NWS Boston/Norton, MA

July 26, 2011Kent County, Providence County, Washington County, Rhode Island; Norfolk County, Worcester County, Massachusetts; Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at Jul 26, 2011, 5:30 PM EDT for Kent County, Providence County, Washington County, Rhode Island; Norfolk County, Worcester County, Massachusetts; Northeastern Connecticut Planning Region, Connecticut. It was in force for 45 min. 2 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: Jul 26, 2011, 5:30 PM EDT (21:30 UTC)
Expired: Jul 26, 2011, 6:15 PM EDT
In force: 45 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon

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

The radar

The Boston radar (KBOX), 80 km from the middle of the area, began a volume at 21:32 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
Jul 26, 5:30 PM EDT	TSTM WND DMG	Windham, CT	TREES DOWN ESPECIALLY IN SOUTH WINDHAM PER WILLIMANTIC FIRE. LARGE BRANCH DOWN ON STEPS OF TOWN HALL PER AMATEUR RADIO..
Jul 26, 5:32 PM EDT	TSTM WND DMG	Willimantic, CT	NUMEROUS TREES AND WIRES DOWN...A FEW ON HOUSES. RUBBER MEMBRANE ROOF BLOWN OFF APARTMENT HOUSE LANDING ON BRIDGE STREET. WORST HIT AREA WAS PLEASANT STREET PER FIRE DEPT. AMATEUR RADIO ALSO REPORTS TREES DOWN ON ROUTE 6 AND MACKEY ROAD. LARGE BRANCHES DOWN ON

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
Jul 26, 2:30 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 9.5 hours before the alert went out and 111 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: 76 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 509 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

496 
WUUS51 KBOX 262130
SVRBOX
CTC013-015-MAC021-027-RIC003-007-009-262215-
/O.NEW.KBOX.SV.W.0078.110726T2130Z-110726T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAUNTON MA
530 PM EDT TUE JUL 26 2011

THE NATIONAL WEATHER SERVICE IN TAUNTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN KENT COUNTY IN RHODE ISLAND...
  PROVIDENCE COUNTY IN RHODE ISLAND...
  THIS INCLUDES THE CITY OF WOONSOCKET...
  WESTERN WASHINGTON COUNTY IN RHODE ISLAND...
  SOUTHEASTERN WORCESTER COUNTY IN CENTRAL MASSACHUSETTS...
  EXTREME SOUTHWESTERN NORFOLK COUNTY IN EASTERN MASSACHUSETTS...
  SOUTHEASTERN TOLLAND COUNTY IN NORTHERN CONNECTICUT...
  WINDHAM COUNTY IN NORTHERN CONNECTICUT...
  THIS INCLUDES THE CITIES OF...WILLIMANTIC...PUTNAM...PLAINFIELD...

* UNTIL 615 PM EDT

* AT 530 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM SOUTHBRIDGE TO COLUMBIA...OR
  ALONG A LINE EXTENDING FROM 12 MILES NORTHWEST OF PUTNAM TO
  WILLIMANTIC...AND WAS MOVING EAST AT 40 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...WEBSTER...POMFRET...
  HAMPTON...SCOTLAND...THOMPSON...BROOKLYN...DOUGLAS...CANTERBURY...
  KILLINGLY...DANIELSON...BURRILLVILLE...FOSTER...STERLING...
  GLOCESTER...MILLVILLE...NORTH SMITHFIELD...BLACKSTONE...SCITUATE...
  SMITHFIELD...CUMBERLAND...COVENTRY...LINCOLN...HOPKINTON...WEST
  GREENWICH AND EXETER.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND LARGE HAIL...AS WELL
AS DEADLY LIGHTNING AND TORRENTIAL RAIN. GET TO SAFE SHELTER NOW...
INSIDE A STURDY BUILDING OR IN A VEHICLE. DO NOT SEEK SHELTER UNDER
TREES. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING. DRIVERS SHOULD BE ALERT FOR PONDING OF WATER AND AVOID
FLOODED ROADS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.

&&

LAT...LON 4135 7174 4140 7185 4142 7184 4142 7180
      4163 7180 4163 7196 4166 7217 4171 7224
      4167 7227 4164 7233 4160 7233 4163 7239
      4214 7202 4200 7139
TIME...MOT...LOC 2130Z 292DEG 34KT 4202 7195 4167 7221

$$

NOCERA

1 follow-up statement

064 
WWUS51 KBOX 262158
SVSBOX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TAUNTON MA
558 PM EDT TUE JUL 26 2011

CTC013-262207-
/O.CAN.KBOX.SV.W.0078.000000T0000Z-110726T2215Z/
TOLLAND CT-
558 PM EDT TUE JUL 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TOLLAND COUNTY IS
CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.

LAT...LON 4135 7174 4140 7185 4142 7184 4142 7180
      4163 7180 4163 7196 4166 7212 4211 7190
      4200 7139
TIME...MOT...LOC 2157Z 292DEG 34KT 4192 7163 4157 7190

$$

CTC015-MAC021-027-RIC003-007-009-262215-
/O.CON.KBOX.SV.W.0078.000000T0000Z-110726T2215Z/
WINDHAM CT-WORCESTER MA-NORFOLK MA-PROVIDENCE RI-WASHINGTON RI-
KENT RI-
558 PM EDT TUE JUL 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR WESTERN KENT...WESTERN WASHINGTON...PROVIDENCE...EXTREME
SOUTHWESTERN NORFOLK...SOUTHEASTERN WORCESTER AND EASTERN WINDHAM
COUNTIES...

AT 549 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM BURRILLVILLE TO 6 MILES 
SOUTHWEST OF PLAINFIELD...MOVING EAST AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO NORTH
SMITHFIELD...BLACKSTONE...WOONSOCKET...SCITUATE...SMITHFIELD...
CUMBERLAND...COVENTRY...HOPKINTON...LINCOLN...WEST GREENWICH AND
EXETER

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
TUESDAY EVENING FOR NORTHERN CONNECTICUT AND MASSACHUSETTS AND
SOUTHERN NEW HAMPSHIRE AND CENTRAL RHODE ISLAND.

&&

LAT...LON 4135 7174 4140 7185 4142 7184 4142 7180
      4163 7180 4163 7196 4166 7212 4211 7190
      4200 7139
TIME...MOT...LOC 2157Z 292DEG 34KT 4192 7163 4157 7190

$$

NOCERA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 5:26 PM EDT	Areal Flood Advisory	BOX	Kent, Providence	106 min
Jul 26, 6:22 PM EDT	Areal Flood Advisory	BOX	Providence	53 min
Jul 26, 6:43 PM EDT	Special Weather Statement	BOX	Washington	62 min
Jul 26, 7:03 PM EDT	Special Weather Statement	BOX	Washington	27 min
Jul 26, 3:13 PM EDT	Severe Thunderstorm Warning	BOX	Franklin, Hampden, Hampshire	62 min
Jul 26, 4:09 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	66 min
Jul 26, 4:10 PM EDT	Special Weather Statement	BOX	Franklin	65 min
Jul 26, 4:14 PM EDT	Areal Flood Advisory	BOX	Franklin, Hampden, Hampshire, Worcester	99 min
Jul 26, 4:15 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	60 min
Jul 26, 4:28 PM EDT	Tornado Warning	BOX	Hampden, Hampshire	47 min
Jul 26, 4:51 PM EDT	Tornado Warning	BOX	Hampden, Worcester	39 min
Jul 26, 4:52 PM EDT	Severe Thunderstorm Warning	BOX	Hampden	53 min
Jul 26, 4:59 PM EDT	Areal Flood Advisory	BOX	Hampden, Worcester	98 min
Jul 26, 5:06 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	39 min

Nearby

Severe Thunderstorm Warnings in Rhode Island, 2011 Severe Thunderstorm Warnings in Massachusetts, 2011 Severe Thunderstorm Warnings in Connecticut, 2011 Every severe thunderstorm warning in 2011

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.