Alert archive / Rhode Island / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 19, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Jun 19, 2021, 4:35 PM EDT for 5 counties in Rhode Island; Bristol County, Massachusetts. It was in force for 55 min. 3 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
- Jun 19, 2021, 4:35 PM EDT (20:35 UTC)
- Expired
- Jun 19, 2021, 5:30 PM EDT
- In force
- 55 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bristol County, MA, Bristol County, RI, Kent County, RI, Newport County, RI, Providence County, RI, Washington County, RI
The radar
The Boston radar (KBOX), 40 km from the middle of the area, began a volume at 20:34 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 |
|---|---|---|---|
| Jun 19, 4:38 PM EDT | TSTM WND DMG | West Greenwich, RI | TREE BRANCH DOWN ON WIRES ON WEAVER HILL ROAD. |
| Jun 19, 4:50 PM EDT | TSTM WND DMG | Warwick, RI | TREE AND WIRES DOWN ON EVERGLADE AVE |
| Jun 19, 4:56 PM EDT | TSTM WND DMG | West Greenwich, RI | TREE BRANCH DOWN ON WIRES ON WEAVER HILL ROAD. |
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, 8.6 hours before the alert went out and 160 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.
- Mixed-layer CAPE
- 10 J/kg
- Mixed-layer CIN
- -293 J/kg
- Mixed-layer LCL
- 877 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 254 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
131
WUUS51 KBOX 192035
SVRBOX
MAC005-RIC001-003-005-007-009-192130-
/O.NEW.KBOX.SV.W.0019.210619T2035Z-210619T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Boston/Norton MA
435 PM EDT Sat Jun 19 2021
The National Weather Service in Boston/Norton has issued a
* Severe Thunderstorm Warning for...
Southwestern Bristol County in southeastern Massachusetts...
Northeastern Washington County in Rhode Island...
Newport County in Rhode Island...
Kent County in Rhode Island...
Southeastern Providence County in Rhode Island...
Bristol County in Rhode Island...
* Until 530 PM EDT.
* At 435 PM EDT, a severe thunderstorm was located near West Warwick,
moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
New Bedford, Fall River, Warwick, Cranston, Coventry, Dartmouth,
West Warwick, North Kingstown, Bristol, Somerset, Portsmouth,
Barrington, Middletown, Swansea, Tiverton, Westport, East
Greenwich, Warren, Scituate and Freetown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4150 7121 4164 7122 4151 7124 4154 7143
4154 7139 4156 7142 4159 7170 4175 7167
4175 7138 4177 7112 4174 7114 4177 7111
4178 7097 4152 7095 4152 7096 4153 7096
4149 7104 4151 7107
TIME...MOT...LOC 2035Z 276DEG 29KT 4167 7158
HAIL...<.75IN
WIND...60MPH
$$
NoceraThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 4:40 PM EDT | Special Marine Warning | BOX | 50 min | |
| Jun 19, 7:42 PM EDT | Special Marine Warning | BOX | 63 min |
Nearby
Severe Thunderstorm Warnings in Rhode Island, 2021Severe Thunderstorm Warnings in Massachusetts, 2021Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.