EF0 tornado, Manati, Puerto Rico, November 18, 2016

1. EF065 to 85 mphthis tornado

   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 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

EF0

Date

November 18, 2016

Touchdown

1:10 PM CST (19:10 UTC)

Lifted

1:20 PM CST (19:20 UTC)

On the ground

10 minutes

Path length

0.6 miles (1.0 km)

Path width

1,091 yards (998 m)

Deaths

0

Injuries

0

Property damage

$10,000

County

Not recorded

Touchdown point

18.430, -66.483

Lift-off point

18.432, -66.492

Record number

1611181310-01

Copious amount of tropical moisture trailing a tropical wave, moving across the Mona Passage along with a pre-frontal trough and a frontal boundary just to the Northwest of the region, allowed for deep pooling of moisture across the region. A polar trough moving across the Western Atlantic continued to erode ridge aloft as it moved eastward across the region today. This scenario allowed for favorable upper level dynamics and strong divergent aloft. The combination of a humid environment, a Southeast steering flow and surface convergence were more than enough to provide support for enhanced and near severe convection across portions of the islands. |The prevailing S-SE steering flow with a S-SW shear aloft provided the forcing and lift needed to create the convective eddies (rotation) over the Mountain Range and into the low to mid levels of the atmosphere. This led to the horizontal rotating column of air to combine with the increasing updraft from the Squall line activity, which eventually led to the funnel cloud formation and finally to a Touchdown funnel rotation Tornado in the Manat�� urban area. ||Preliminary information from the NWS indicates that the tornado that tore through the municipality of Manat�� was an EF-0 tornado. This tornado hit the ground at some point in the urbanization of Flamboy��n around 3:10 p.m. and moved northwest through Road #2 with flying debris and strong winds reported over the urbanization of Atenas. The tornado dissipated about 10 minutes later, leaving minor damages through its path. ||After the survey was done, the area most affected by the strong winds associated to this tornado was over the urbanization of Flamboy��n, where several downed trees were reported. Large trees were reported fallen on Calle 2, and another at Calle Marginal. Also, on road 669, a cyclone fence was torn down by the strong winds and a building lost the roof. On Calle 22, two houses lost their tin roof porches. There was several damage reports over vehicles due to the flying debris associated to the tornado, affecting mainly the urbanization of Atenas. ||Based on damages and actual reports, the NWS survey team believes winds associated to this tornado could have reached 50 to 75 miles per hour.

A Tornado was reported at the urban area of Manati. Among the structural damages identified were weak structures in a highly populated area, structural damages due to flying debris, galvanized roofs and medium to large size trees were ripped off.

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

NWS San Juan, PR wrote its last area forecast discussion before the tornado touched down at Nov 18, 12:17 PM CST, 53 minutes earlier.

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In the hours before

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San Juan (TJIG), 41 km from the path, in the two hours either side.

From the Iowa Environmental Mesonet's archive of airport observations.

The San Juan radar (TJUA), 56 km away, was scanning. The volume nearest the touchdown began at 19:08 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.

The live radar over the trackEvery 2016 tornado in Puerto RicoEvery tornado in Puerto Rico since 1950Warnings in force in Puerto Rico nowThe forecast where you are

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.