EF1 tornado, East Douglas to West Upton, Massachusetts, July 26, 2018

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 mphthis tornado

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

3. EF2111 to 135 mph

   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.

Rating

EF1

Date

July 26, 2018

Touchdown

2:32 AM EDT (06:32 UTC)

Lifted

2:40 AM EDT (06:40 UTC)

On the ground

8 minutes

Path length

4.4 miles (7.1 km)

Path width

200 yards (183 m)

Deaths

0

Injuries

0

Property damage

$25,000

County

Worcester County

Touchdown point

42.053, -71.698

Lift-off point

42.109, -71.656

Record number

1807260032-01

A cold front approached New England on the early morning of July 26th, with warm and very humid air in place over Southern New England. A pre-frontal trough moved through the region generating showers and a few thunderstorms. The thunderstorms brought down trees and wires in several locations, and generated tornadoes that touched down in Douglas and Upton during the early morning.

At 132 AM EST, a tornado touched down near Maple Street in East Douglas and moved northeast through extreme northwest Uxbridge to southern Northbridge, where it lifted near Northbridge Middle School. The tornado was on the ground for 4.4 miles. The path width reached a maximum of 200 yards in East Douglas. Wind speeds were estimated at 100 mph. The tornado was an EF-1 in East Douglas, and then an EF-0 in Uxbridge and Northbridge.

At 1:41 AM EST, the parent thunderstorm of the Douglas tornado generated a second tornado that touched down in western Upton. The tornado touched down on Hartford Avenue South, crossed state route 140, and and produced most of its damage in the neighborhood of Ephram's Way. The tornado then moved northeast, lifting in Upton State Forest. Winds were estimated at 100 mph on Ephram's Way. The path length was about 1 mile, with a maximum width of 100 yards. The tornado was rated an EF-1.

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

No tornado warning for this county appears in the archive as in force at the moment the tornado touched down.

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 Storm Prediction Center had this point in a General Thunderstorms Risk. The outlook in force was issued at 05:57 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 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.

The Boston radar (KBOX), 47 km away, was scanning. The volume nearest the touchdown began at 06:33 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.

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

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

The live radar over the trackEvery 2018 tornado in MassachusettsEvery tornado in Massachusetts since 1950Warnings in force in Massachusetts nowThe forecast where you are

2 more were confirmed in the United States that day.

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.

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