Alert archive / Rhode Island / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 107, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this severe thunderstorm warning at Aug 27, 2021, 1:58 PM EDT for Kent County, Newport County, Washington County, Rhode Island. It was in force for 62 min. 1 report 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 27, 2021, 1:58 PM EDT (17:58 UTC)
- Expired
- Aug 27, 2021, 3:00 PM EDT
- In force
- 62 min
- Issued by
- NWS Boston/Norton, MA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, RI, Newport County, RI, Washington County, RI
The radar
The Boston radar (KBOX), 60 km from the middle of the area, began a volume at 18:01 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 27, 2:05 PM EDT | HAIL 0.75 | Richmond, RI | HAIL FELL FOR 5 MINUTES. |
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, 6.0 hours before the alert went out and 136 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
- 1159 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 1043 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
605
WUUS51 KBOX 271758
SVRBOX
RIC003-005-009-271900-
/O.NEW.KBOX.SV.W.0107.210827T1758Z-210827T1900Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Boston/Norton MA
158 PM EDT Fri Aug 27 2021
The National Weather Service in Boston/Norton has issued a
* Severe Thunderstorm Warning for...
Northeastern Washington County in Rhode Island...
Southwestern Newport County in Rhode Island...
South central Kent County in Rhode Island...
* Until 300 PM EDT.
* At 158 PM EDT, a severe thunderstorm was located near Exeter, or 8
miles west of North Kingstown, moving southeast at 10 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
South Kingstown, North Kingstown, Newport, Narragansett, East
Greenwich, Hopkinton, Charlestown, Richmond, Exeter, West Greenwich
and Jamestown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4153 7175 4164 7156 4153 7142 4150 7142
4151 7140 4148 7142 4150 7137 4148 7136
4149 7139 4147 7138 4148 7134 4145 7131
4145 7135 4146 7139 4145 7140 4147 7142
4136 7149 4138 7153 4137 7153 4136 7163
TIME...MOT...LOC 1758Z 322DEG 8KT 4153 7160
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Loconto2 follow-up statements
234
WWUS51 KBOX 271824
SVSBOX
Severe Weather Statement
National Weather Service Boston/Norton MA
224 PM EDT Fri Aug 27 2021
RIC003-005-271833-
/O.CAN.KBOX.SV.W.0107.000000T0000Z-210827T1900Z/
Newport RI-Kent RI-
224 PM EDT Fri Aug 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NEWPORT AND SOUTH
CENTRAL KENT COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4151 7174 4159 7155 4146 7143 4136 7149
4138 7153 4137 7153 4136 7163
TIME...MOT...LOC 1823Z 331DEG 11KT 4142 7155
$$
RIC009-271900-
/O.CON.KBOX.SV.W.0107.000000T0000Z-210827T1900Z/
Washington RI-
224 PM EDT Fri Aug 27 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR NORTHEASTERN WASHINGTON COUNTY...
At 223 PM EDT, a severe thunderstorm was located over South
Kingstown, moving southeast at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
South Kingstown, North Kingstown, Narragansett, Hopkinton,
Charlestown, Richmond and Exeter.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4151 7174 4159 7155 4146 7143 4136 7149
4138 7153 4137 7153 4136 7163
TIME...MOT...LOC 1823Z 331DEG 11KT 4142 7155
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Loconto207
WWUS51 KBOX 271850
SVSBOX
Severe Weather Statement
National Weather Service Boston/Norton MA
250 PM EDT Fri Aug 27 2021
RIC009-271900-
/O.EXP.KBOX.SV.W.0107.000000T0000Z-210827T1900Z/
Washington RI-
250 PM EDT Fri Aug 27 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WASHINGTON COUNTY
WILL EXPIRE AT 300 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.
LAT...LON 4151 7174 4159 7155 4146 7143 4136 7149
4138 7153 4137 7153 4136 7163
TIME...MOT...LOC 1850Z 322DEG 8KT 4139 7152
$$
LocontoThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 1:39 PM EDT | Special Weather Statement | BOX | Washington | 51 min |
| Aug 27, 5:02 PM EDT | Special Weather Statement | BOX | Kent | 58 min |
Nearby
Severe Thunderstorm Warnings in Rhode Island, 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.