Alert archive / Rhode Island / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 9, NWS Boston/Norton, MA

May 26, 2021Bristol County, Kent County, Providence County, Rhode Island; Bristol County, Norfolk County, Massachusetts; Northeastern Connecticut Planning Region, Connecticut

NWS Boston/Norton, MA issued this severe thunderstorm warning at May 26, 2021, 9:37 PM EDT for Bristol County, Kent County, Providence County, Rhode Island; Bristol County, Norfolk County, Massachusetts; Northeastern Connecticut Planning Region, Connecticut. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 26, 2021, 9:37 PM EDT (01:37 UTC)
Expired: May 26, 2021, 10:15 PM EDT
In force: 38 min
Issued by: NWS Boston/Norton, MA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

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

The radar

The Boston radar (KBOX), 40 km from the middle of the area, began a volume at 01:37 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 nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 1.6 hours before the alert went out and 148 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: 357 J/kg
Mixed-layer CIN: -174 J/kg
Mixed-layer LCL: 956 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 194 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

912 
WUUS51 KBOX 270137
SVRBOX
CTC015-MAC005-021-RIC001-003-007-270215-
/O.NEW.KBOX.SV.W.0009.210527T0137Z-210527T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Boston/Norton MA
937 PM EDT Wed May 26 2021

The National Weather Service in Boston/Norton has issued a

* Severe Thunderstorm Warning for...
  Southeastern Windham County in northern Connecticut...
  Southwestern Norfolk County in eastern Massachusetts...
  West central Bristol County in southeastern Massachusetts...
  Kent County in Rhode Island...
  Providence County in Rhode Island...
  Western Bristol County in Rhode Island...

* Until 1015 PM EDT.

* At 937 PM EDT, a severe thunderstorm was located over Brooklyn, or
  7 miles northwest of Plainfield, moving east at 40 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect wind damage to trees and power lines. Minor hail 
           damage to vehicles is possible.

* Locations impacted include...
  Providence, Warwick, Cranston, Pawtucket, East Providence,
  Coventry, Cumberland, North Providence, West Warwick, Johnston,
  North Attleborough, Bristol, Plainfield, Attleboro, Smithfield,
  Lincoln, Central Falls, Killingly, Barrington and Burrillville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4166 7210 4190 7209 4200 7133 4168 7127
      4167 7127 4168 7128 4167 7131 4171 7129
      4172 7134 4179 7137 4176 7139 4173 7138
      4172 7136 4167 7137 4169 7145 4167 7144
      4166 7141 4163 7195
TIME...MOT...LOC 0137Z 264DEG 33KT 4179 7195 

HAIL...1.00IN
WIND...60MPH
 
$$

BL

3 follow-up statements

266 
WWUS51 KBOX 270147
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
947 PM EDT Wed May 26 2021

CTC015-MAC005-021-RIC001-003-007-270215-
/O.CON.KBOX.SV.W.0009.000000T0000Z-210527T0215Z/
Windham CT-Norfolk MA-Bristol MA-Kent RI-Providence RI-Bristol RI-
947 PM EDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR SOUTHEASTERN WINDHAM...SOUTHWESTERN NORFOLK...WEST CENTRAL
BRISTOL...KENT...PROVIDENCE AND WESTERN BRISTOL COUNTIES...

At 947 PM EDT, a severe thunderstorm was located over Killingly, or 7
miles northeast of Plainfield, moving east at 40 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Providence, Warwick, Cranston, Pawtucket, East Providence, Coventry,
Cumberland, North Providence, West Warwick, Johnston, North
Attleborough, Bristol, Plainfield, Attleboro, Smithfield, Lincoln,
Central Falls, Killingly, Barrington and Burrillville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4170 7196 4192 7197 4200 7133 4168 7127
      4167 7127 4168 7128 4167 7131 4171 7129
      4172 7134 4179 7137 4176 7139 4173 7138
      4172 7136 4167 7137 4169 7145 4167 7144
      4166 7141 4165 7193
TIME...MOT...LOC 0147Z 264DEG 33KT 4180 7183 

HAIL...0.75IN
WIND...60MPH
 
$$

BL

790 
WWUS51 KBOX 270157
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
957 PM EDT Wed May 26 2021

CTC015-MAC005-021-RIC001-003-007-270215-
/O.CON.KBOX.SV.W.0009.000000T0000Z-210527T0215Z/
Windham CT-Norfolk MA-Bristol MA-Kent RI-Providence RI-Bristol RI-
957 PM EDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR EAST CENTRAL WINDHAM...SOUTHWESTERN NORFOLK...WEST CENTRAL
BRISTOL...NORTHERN KENT...PROVIDENCE AND NORTHWESTERN BRISTOL
COUNTIES...

At 957 PM EDT, a severe thunderstorm was located near Scituate, or
near Johnston, moving east at 50 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Providence, Warwick, Cranston, Pawtucket, East Providence, Coventry,
Cumberland, North Providence, West Warwick, Johnston, North
Attleborough, Bristol, Plainfield, Attleboro, Smithfield, Lincoln,
Central Falls, Killingly, Barrington and Burrillville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4176 7187 4194 7182 4200 7133 4170 7127
      4171 7129 4172 7134 4179 7137 4176 7139
      4173 7138 4169 7145 4169 7178
TIME...MOT...LOC 0157Z 255DEG 44KT 4185 7161 

HAIL...0.75IN
WIND...60MPH
 
$$

BL

600 
WWUS51 KBOX 270206
SVSBOX

Severe Weather Statement
National Weather Service Boston/Norton MA
1006 PM EDT Wed May 26 2021

CTC015-RIC001-270215-
/O.CAN.KBOX.SV.W.0009.000000T0000Z-210527T0215Z/
Windham CT-Bristol RI-
1006 PM EDT Wed May 26 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WINDHAM AND
NORTHWESTERN BRISTOL COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4179 7170 4195 7174 4200 7133 4180 7129
      4177 7133 4177 7136 4179 7137 4178 7139
      4176 7139 4172 7162
TIME...MOT...LOC 0205Z 247DEG 33KT 4187 7150 

$$

MAC005-021-RIC003-007-270215-
/O.CON.KBOX.SV.W.0009.000000T0000Z-210527T0215Z/
Norfolk MA-Bristol MA-Kent RI-Providence RI-
1006 PM EDT Wed May 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR SOUTHWESTERN NORFOLK...WEST CENTRAL BRISTOL...NORTH CENTRAL KENT
AND PROVIDENCE COUNTIES...

At 1006 PM EDT, a severe thunderstorm was located over North 
Providence, moving east at 40 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Providence, Warwick, Cranston, Pawtucket, East Providence, Coventry,
Cumberland, North Providence, Johnston, North Attleborough,
Attleboro, Smithfield, Lincoln, Central Falls, Burrillville, Seekonk,
North Smithfield, Scituate, Glocester and Plainville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4179 7170 4195 7174 4200 7133 4180 7129
      4177 7133 4177 7136 4179 7137 4178 7139
      4176 7139 4172 7162
TIME...MOT...LOC 0205Z 247DEG 33KT 4187 7150 

HAIL...0.75IN
WIND...60MPH
 
$$

BL

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 10:15 PM EDT	Special Weather Statement	BOX	Providence	45 min
May 26, 8:03 PM EDT	Special Marine Warning	BOX		37 min
May 27, 2:52 PM EDT	Gale Watch	BOX		13 hr
May 26, 8:22 PM EDT	Severe Thunderstorm Warning	BOX	Northeastern Connecticut Planning Region	38 min
May 26, 8:40 PM EDT	Special Weather Statement	BOX		35 min
May 26, 8:58 PM EDT	Special Weather Statement	BOX		32 min
May 26, 9:06 PM EDT	Special Weather Statement	BOX		39 min

Nearby

Severe Thunderstorm Warnings in Rhode Island, 2021 Severe Thunderstorm Warnings in Massachusetts, 2021 Severe Thunderstorm Warnings in Connecticut, 2021 Every severe thunderstorm warning in 2021

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.