Tornadoes · United States · Rhode Island · 2023

EF2 tornado, Waterman Four Corner to Woodlawn, Rhode Island, August 18, 2023

From Waterman Four Corner to Woodlawn, this EF2 tornado ran 9.1 miles across Providence County on August 18, 2023, touching down at 8:40 AM EDT and reaching 250 yards wide. It killed nobody and injured 1, and did $250,000 of property damage.

The rating scale

Tracks are drawn in the color of the rating. The Enhanced Fujita scale rates the damage rather than measuring the wind: the speeds are what that damage is taken to imply.

  1. EF065 to 85 mph

    Light damage. Surface peeled off some roofs, gutters and siding damaged, branches broken, shallow-rooted trees pushed over.

  2. EF186 to 110 mph

    Moderate damage. Roofs badly stripped, mobile homes overturned or badly damaged, exterior doors lost, windows broken.

  3. EF2111 to 135 mphthis tornado

    Considerable damage. Roofs torn off well-built houses, frame homes shifted on their foundations, mobile homes destroyed, large trees snapped or uprooted, cars lifted off the ground.

  4. EF3136 to 165 mph

    Severe damage. Whole stories of well-built houses destroyed, large buildings badly damaged, trains overturned, trees debarked, heavy cars lifted and thrown.

  5. EF4166 to 200 mph

    Devastating damage. Well-built houses leveled, structures with weak foundations moved some distance, cars thrown and large missiles generated.

  6. EF5over 200 mph

    Incredible damage. Strong frame houses swept off their foundations, car-sized missiles thrown more than 100 meters, steel-reinforced concrete badly damaged, high-rise buildings deformed.

  7. Unrated

    The survey recorded a tornado but could not put a number on it, most often because it crossed open country and damaged nothing a rating can be read from.

The record

Rating
EF2
Date
August 18, 2023
Touchdown
8:40 AM EDT (12:40 UTC)
Lifted
8:57 AM EDT (12:57 UTC)
On the ground
17 minutes
Path length
9.1 miles (14.6 km)
Path width
250 yards (229 m)
Deaths
0
Injuries
1
Property damage
$250,000
County
Providence County
Touchdown point
41.799, -71.574
Lift-off point
41.873, -71.435
Record number
2308180640-01

What the Weather Service recorded

A high amplitude, negatively tilted trough moving across the Great Lakes and into New England along with cold and warm front provided strong forcing which resulted in flooding, wind damage, and 5 tornadoes. In the warm sector dewpoints surged into the mid 70s with PWATs near 2 inches which led to torrential downpours. Tornadoes occurred in Scotland, Ct, Scituate, RI, North Attleboro, MA, Stoughton, MA, and Weymouth, MA. The tornadoes ranged in intensity from EF-0 to EF-2.

A tornado caused significant damage along a discontinuous path|in Scituate, Johnston, and North Providence, Rhode Island. This |is the strongest tornado to have struck Rhode Island since the F-2|tornado in Cranston and Providence on August 7, 1986.||The tornado first touched down near Byron Randall Road in Scituate|which is where the most severe damage occurred. There were hundreds|of large trees either uprooted or snapped at their bases. One |home sustained damage to its roof, the top of its chimney was |blown off, windows were blown in, and an exterior door was |dislodged from its framing. Damage was consistent with winds of |around 115 mph which is classified as EF-2 on the Enhanced Fujita|Scale.||The tornado then tracked into Johnston where it crossed I-295 at |Exit 10 and lifted a vehicle into the air before dropping it back |onto the highway. The driver was transported to an area hospital |with minor injuries. From there, the tornado moved across Bridle |Way and Carriage Way where a number of trees were snapped or |uprooted, some of which fell onto homes or vehicles. Some homes |also lost some singles from their roofs. A metal Stop sign pole |was bent in half and the sign was blown away. The tornado then |caused damage in Highland Memorial Park Cemetery where a number of|large trees were either snapped or uprooted. The damage observed |in Johnston was consistent with winds of 90 to 100 mph which is |classified as EF-1 on the Enhanced Fujita Scale.||Finally, the tornado crossed into North Providence. Similar to|Johnston, a number of trees were either snapped or uprooted, some|falling onto homes or vehicles. Most of the damage observed was to|the north of Mineral Spring Avenue. One of the harder hit areas |included Lydia Avenue, Armand Drive, and Bennett Street where two|homes were made uninhabitable from fallen trees. The damage |observed in North Providence was consistent with winds of 90 to |100 mph which is classified as EF-1 on the Enhanced Fujita Scale.||The National Weather Service would like to thank the Rhode Island|Emergency Management Agency, the Scituate Police Department, the|Johnston Police Department, the North Providence Fire Department,|and Skywarn Amateur Radio Operators for their assistance with the|damage survey.

From NOAA NCEI's Storm Events Database, the narrative the local forecast office wrote for Storm Data.

The warnings

5 minutes of warning. NWS BOX issued a tornado warning for this county at 12:35 UTC, 5 minutes before the tornado touched down, in force until 13:15 UTC.

Issued (UTC)ExpiredProductOffice
12:05 UTC13:00 UTCSevere Thunderstorm WarningBOX
12:26 UTC14:38 UTCFlash Flood WarningBOX
12:35 UTC13:15 UTCTornado WarningBOX
12:50 UTC13:45 UTCSevere Thunderstorm WarningBOX
13:12 UTC13:33 UTCSevere Thunderstorm WarningBOX
13:18 UTC14:11 UTCFlash Flood WarningBOX

Every warning and watch covering the touchdown point that day, from the Iowa Environmental Mesonet's archive of National Weather Service products. Lead time is measured from the issue of the warning in force to the touchdown time in the database, both of which were recorded to the minute by different people.

The forecast that day

The Storm Prediction Center had this point in a Marginal Risk, with a 0.02 chance of a tornado within 25 miles. The outlook in force was issued at 05:51 UTC.

SPC's Day 1 convective outlook as it stood when the tornado began, read at the touchdown point. The same archive is on the radar archive.

The air that afternoon

The radiosonde launches on either side of the tornado, from the nearest station that was launching then, drawn and analyzed the way Storm Lab does: the same diagram, the same parcel and shear definitions SPC's mesoanalysis uses.

Brookhaven, NY (KOKX), 12:00Z

0.7 hours before the tornado, 157 km from the path. August 18, 2023.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2023-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 1659 joules per kilogram, CIN -4, lifted condensation level 529 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Brookhaven, NY at 12:00Z on 2023-08-18The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity 368 square meters per square second, 0 to 6 km bulk shear 54 knots.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
1659 J/kg
Mixed-layer CIN
-4 J/kg
Surface CAPE
2052 J/kg
Mixed-layer LCL
529 m above ground
0-6 km bulk shear
54 kt
0-1 km bulk shear
35 kt
0-1 km storm-relative helicity
368 m²/s²
0-3 km storm-relative helicity
436 m²/s²
Significant tornado parameter
3.8
Supercell composite
16.0
0-3 km lapse rate
6.0 K/km

Open this sounding in Storm Lab

Brookhaven, NY (KOKX), 00:00Z

11.3 hours after it, 157 km from the path. August 19, 2023.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2023-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel lifted from the surface. Mixed-layer CAPE 38 joules per kilogram, CIN -17, lifted condensation level 1569 meters above ground. Wind barbs in knots down the right edge.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed. The warm shading is its CAPE, the cool shading the inhibition it has to break through.
HodographHodograph, Brookhaven, NY at 00:00Z on 2023-08-19The wind through the lowest 10 kilometers as a curve, rings every 10 meters per second labeled in knots. Zero to 1 km storm-relative helicity -52 square meters per square second, 0 to 6 km bulk shear 72 knots.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km. RM and LM are the right and left moving storms Bunkers' method gives; the shaded area is the 0 to 1 km storm-relative helicity.
Mixed-layer CAPE
38 J/kg
Mixed-layer CIN
-17 J/kg
Surface CAPE
130 J/kg
Mixed-layer LCL
1569 m above ground
0-6 km bulk shear
72 kt
0-1 km bulk shear
25 kt
0-1 km storm-relative helicity
-52 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.0
0-3 km lapse rate
6.9 K/km

Open this sounding in Storm Lab

The radar

The Boston radar (KBOX), 33 km away, was scanning. The volume nearest the touchdown began at 12:41 UTC.

Open the radar archive at this moment, over the track

Reflectivity and velocity, decoded from the Level II archive in the browser. Volumes take a few seconds to open the first time.

What was reported nearby

Local storm reports within 60 km of the path, in the three hours either side.

Time (UTC)ReportWhereCountyRemark
12:34 UTCTSTM WND DMGCoventryKent, RITree down on Town Farm Road.
12:39 UTCTSTM WND DMG2 Nw West GreenwichKent, RILarge branches down on roadway.
12:40 UTCTSTM WND DMG2 E ScituateProvidence, RITree down on a house.
12:40 UTCTSTM WND DMG2 E ScituateProvidence, RINumerous trees down on Byron Randall Road. Additionally, a tree down on a home at the 200 block.
12:40 UTCTSTM WND DMG2 E ScituateProvidence, RINumerous trees down on Byron Randall Road. Additionally, a tree down on a home at the 200 block.
12:40 UTCTORNADOScituateProvidence, RI*** 1 INJ *** EF-2. The tornado first touched down near Byron Randall Road in Scituate which is where the most severe damage occurred. There were hundreds of large trees either uprooted or snapped at their bases. One hom
12:45 UTCTSTM WND DMG2 Wnw JohnstonProvidence, RITrees and branches down.
12:45 UTCTORNADO3 Wsw North ProvidenceProvidence, RIBroadcast media relayed a video of a tornado crossing I-295 on the Smithfield and Johnston town line. Time estimated to be 8:45 AM.
12:45 UTCTORNADO3 Wsw North ProvidenceProvidence, RIBroadcast media relayed a video of a tornado crossing I-295 on the Smithfield and Johnston town line. Time estimated to be 8:45 AM.
12:50 UTCTSTM WND DMG1 Sse North SmithfieldProvidence, RITree down on road.
12:51 UTCTSTM WND DMG1 Se JohnstonProvidence, RITree down on road.
13:05 UTCTSTM WND DMG1 Nnw North ProvidenceProvidence, RITree and wires down.
13:08 UTCTSTM WND DMG1 N North ProvidenceProvidence, RITree down on cars.
13:08 UTCTSTM WND DMG2 Se PawtucketProvidence, RIMultiple branches and a few large trees down.
13:10 UTCTSTM WND DMG1 N North ProvidenceProvidence, RILarge tree and power lines down.
13:20 UTCFLOOD2 W East GreenwichKent, RIRoute 2 at Middle Street flooded and impassable. Several other streets also flooded and impassable.
14:06 UTCFLOOD1 W WarwickKent, RISignificant street flooding from portions of Villa Avenue to Lucille Street.
14:09 UTCFLOODBristolBristol, RIPart of Metacom Avenue flooded and impassable.

From the Iowa Environmental Mesonet's archive of National Weather Service local storm reports.

This ground now

The live radar over the trackEvery 2023 tornado in Rhode IslandEvery tornado in Rhode Island since 1950Warnings in force in Rhode Island nowThe forecast where you are

The other tornadoes of August 18, 2023

4 more were confirmed in the United States that day.

DateTimeRatingWherePath (mi)Width (yd)DeathsInjuriesDamage
August 187:53 AM EDTEF1Northeastern Connecticut Planning Region, CT2.7200$30,000
August 189:07 AM EDTEF1Bristol, MA7.680$30,000
August 189:37 AM EDTEF0Norfolk, MA0.135$3,000
August 189:52 AM EDTEF1Norfolk, MA0.3100$10,000

What this means

Ratings are the survey's, read off the damage rather than measured; the rating scale is above. Tornado counts rise through the record as reporting improved, so a year in the 1950s is not comparable with one today except for the strongest tornadoes, which were always noticed.

Sources

NOAA Storm Prediction Center tornado database, 1950-2025, the official record kept by NOAA's Storm Prediction Center.