000
NOUS41 KPHI 012209
PNSPHI
NJZ009-015-PAZ070-071-102>106-021015-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
609 PM EDT FRI NOV 1 2019

...NWS DAMAGE SURVEY FOR 10/31/19 TORNADO AND
STRAIGHT LINE WIND EVENT...

.GLEN MILLS TORNADO...

START LOCATION...GLEN MILLS IN THORNBURY TOWNSHIP, DELAWARE COUNTY, PA
END LOCATION...GLEN MILLS IN THORNBURY TOWNSHIP, DELAWARE COUNTY, PA
DATE...OCTOBER 31, 2019
ESTIMATED TIME...11:25 PM EDT
MAXIMUM EF-SCALE RATING...EF2
ESTIMATED MAXIMUM WIND SPEED...120 MPH
MAXIMUM PATH WIDTH...250 YARDS
PATH LENGTH...0.5 MILES
BEGINNING LAT/LON...39.9150/-75.5202
ENDING LAT/LON...39.9189/-75.5129
* FATALITIES...0
* INJURIES...2

...SUMMARY...
A TORNADO EMBEDDED IN A LARGER AREA OF STRAIGHT LINE 
WINDS TOUCHED DOWN JUST SOUTHWEST OF THE COBBLESTONE AT 
THORNBURY SUBDIVISION IN THE TOWN OF GLEN MILLS, 
DELAWARE COUNTY AT 11:25 PM EDT, THURSDAY, OCTOBER 31, 
2019. DAMAGE NEAR THE BEGINNING OF THE TORNADO PATH
ALONG CHENEY ROAD CONSISTED OF A FEW SPORADIC UPROOTED 
TREES AND ASSOCIATED COLLATERAL DAMAGE OF ADJACENT HOMES.
HOWEVER, AS THE TORNADO REACHED ITS MAXIMUM EF2 
STRENGTH, THE NUMBER AND SIZE OF UPROOTED TREES INCREASED
WITH SIGNIFICANT ASSOCIATED DAMAGE TO NEARBY HOMES. THREE 
HOUSES SUSTAINED SIGNIFICANT DAMAGE FROM THE WIND ITSELF, 
WHICH, BASED ON THIS SURVEY, PEAKED AROUND 120 MPH. AS
THE EF2 TORNADO CONTINUED TO MOVE NORTHEAST, AT LEAST TWO
GREENHOUSES WERE DESTROYED BEFORE IT LIFTED NEAR THE 
INTERSECTION OF ORCHARD AND BROOMALL LANES. HOWEVER,
SIGNIFICANT STRAIGHT LINE WIND DAMAGE CONTINUED BEYOND THIS
INTERSECTION WITH DOZENS OF SNAPPED AND UPROOTED TREES,
ESPECIALLY WITHIN THE GOLF COURSE AT GLEN MILLS, BEFORE THE 
STRONG WINDS GRADUALLY WEAKENED BELOW SEVERE LIMITS. 

THE NWS SURVEY TEAM WOULD LIKE TO THANK DELAWARE COUNTY EMERGENCY
MANAGEMENT FOR THEIR ASSISTANCE WITH THIS SURVEY.  

.HARTSVILLE STRAIGHT LINE WINDS

LOCATION...HARTSVILLE IN WARMINSTER TOWNSHIP, BUCKS COUNTY, PA
DATE...OCTOBER 31, 2019
ESTIMATED TIME...11:45 PM EDT TO 11:50 PM EDT
ESTIMATED MAXIMUM WIND SPEED...110 MPH
* FATALITIES...0
* INJURIES...2

...SUMMARY...
A NATIONAL WEATHER SERVICE SURVEY TEAM DETERMINED THAT STRAIGHT
LINE WINDS WERE THE CAUSE OF TREE, UTILITY, AND COLLATERAL 
STRUCTURAL DAMAGE IN THE VICINITY OF HARTSVILLE, WARMINSTER 
TOWNSHIP, BUCKS COUNTY, PENNSYLVANIA ON OCTOBER 31, 2019. 
MULTIPLE HOMES SUSTAINED DAMAGE FROM FALLING TREES ON AND NEAR
BARNESS DR, AND SEVERAL UTILITY POLES WERE SNAPPED NEAR THEIR 
BASE ALONG STREET RD. WIND GUSTS UP TO 110 MPH WERE RESPONSIBLE 
FOR THIS DAMAGE ALONG A SPORADIC AND NON-CONTINUOUS PATH, 
ALTHOUGH MOST AREAS EXPERIENCED WINDS OF LESSER MAGNITUDE.

THE NWS SURVEY TEAM WOULD LIKE TO THANK BUCKS COUNTY EMERGENCY 
SERVICES AND THE HARTSVILLE FIRE DEPARTMENT FOR THEIR ASSISTANCE 
WITH THIS SURVEY.

EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO 
THE FOLLOWING CATEGORIES:

EF0...WEAK......65 TO 85 MPH
EF1...WEAK......86 TO 110 MPH
EF2...STRONG....111 TO 135 MPH
EF3...STRONG....136 TO 165 MPH
EF4...VIOLENT...166 TO 200 MPH
EF5...VIOLENT...>200 MPH

* THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO
CHANGE PENDING FINAL REVIEW OF THE EVENTS AND PUBLICATION IN NWS
STORM DATA.

$$

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