Storm Events Database

Event Details:

Event Tornado
-- Scale EF1
-- Length 0.25 Miles
-- Width 50 Yards
State MASSACHUSETTS
County/Area BARNSTABLE
WFO BOX
Report Source NWS Storm Survey
NCEI Data Source CSV
Begin Date 2019-07-23 11:00 EST-5
Begin Location 0SE WEST YARMOUTH
Begin Lat/Lon 41.6464/-70.2435
End Date 2019-07-23 11:01 EST-5
End Location 1ESE WEST YARMOUTH
End Lat/Lon 41.6455/-70.2397
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 100.00K
Crop Damage 0.00K
Episode Narrative A deep southerly flow of tropical moisture was in place over southeast MA with precipitable water values in excess of 2 inches on the south coast. A frontal wave along the coast provided strong low level convergence and that combined with upper divergence from the right entrance region of a 110 knot upper level jet to produce very severe weather for Cape Cod. Three tornadoes occurred! Prior to these, there had only been three recorded tornadoes since 1950. Outside of the tornado area, damage surveys showed that strong microburst winds caused straight-line damage.
Event Narrative A brief and narrow tornado occurred in West Yarmouth and was on the ground at the very same time as another tornado was moving toward South Yarmouth!
The tornado touched down on Yacht Avenue and Schooner Street in West Yarmouth and traveled east approximately one-quarter mile before lifting on Egg Harbor Road, just after Pine Cone Drive. The path width was approximately 50 yards. Numerous pine trees were snapped near their bases. Tree tops appeared twisted. Residents reported seeing swirling motion. NWS Doppler Radar showed a tornado debris signature with this storm, indicating that some trees and branches were lofted into the air. This tornado was only on the ground for one minute, between noon and 1201 PM EDT (1100 and 1101 AM EST). It lifted as it approached the south end of the Bass River.
Although a brief and very shallow waterspout was observed over the southern part of the Bass River, the damage in West Dennis just to the east of Wrinkle Point was considered to be from strong straight line downburst winds.


    

Event Map:

Note: The tornado track is approximate based on the beginning (B) and ending (E) locations. The actual tornado path may differ from a straight line.
Measure
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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 8.534M 0.00K
TISBURY DUKES CO. MA 07/23/2019 10:25 EST-5 Thunderstorm Wind 60 kts. EG 0 0 1.50K 0.00K
OAK BLUFFS DUKES CO. MA 07/23/2019 10:30 EST-5 Thunderstorm Wind 50 kts. EG 0 0 0.50K 0.00K
POPPONESSET BEACH BARNSTABLE CO. MA 07/23/2019 10:38 EST-5 Thunderstorm Wind 50 kts. MG 0 0 0.00K 0.00K
MASHPEE BARNSTABLE CO. MA 07/23/2019 10:40 EST-5 Thunderstorm Wind 50 kts. EG 0 0 1.50K 0.00K
HYANNIS PORT BARNSTABLE CO. MA 07/23/2019 10:48 EST-5 Thunderstorm Wind 50 kts. EG 0 0 2.00K 0.00K
HYANNIS PORT BARNSTABLE CO. MA 07/23/2019 10:57 EST-5 Tornado EF1 0 0 1.200M 0.00K
WEST YARMOUTH BARNSTABLE CO. MA 07/23/2019 11:00 EST-5 Tornado EF1 0 0 100.00K 0.00K
HYANNIS BARNSTABLE CO. MA 07/23/2019 11:01 EST-5 Thunderstorm Wind 50 kts. EG 0 0 0.50K 0.00K
WEST DENNIS BARNSTABLE CO. MA 07/23/2019 11:02 EST-5 Thunderstorm Wind 78 kts. EG 0 0 2.600M 0.00K
WIANNO BARNSTABLE CO. MA 07/23/2019 11:05 EST-5 Thunderstorm Wind 65 kts. EG 0 0 5.00K 0.00K
HARWICH BARNSTABLE CO. MA 07/23/2019 11:10 EST-5 Tornado EF1 0 0 3.600M 0.00K
WEST BREWSTER BARNSTABLE CO. MA 07/23/2019 11:14 EST-5 Thunderstorm Wind 65 kts. EG 0 0 20.00K 0.00K
CHATHAM BARNSTABLE CO. MA 07/23/2019 11:15 EST-5 Thunderstorm Wind 78 kts. EG 0 0 1.000M 0.00K
SOUTH ORLEANS BARNSTABLE CO. MA 07/23/2019 11:30 EST-5 Thunderstorm Wind 61 kts. EG 0 0 3.00K 0.00K
Totals: 0 0 8.534M 0.00K