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Port Royal, PA Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Port Royal is about the same as Pennsylvania average and is much lower than the national average. The risk of tornado damage in Port Royal is lower than Pennsylvania average and is lower than the national average.

Topics:Earthquake IndexVolcano IndexTornado IndexOther Weather Extremes EventsVolcanos NearbyHistorical Earthquake EventsHistorical Tornado Events

Earthquake Index, #1254

Port Royal, PA
0.03
Pennsylvania
0.17
U.S.
1.81

The earthquake index value is calculated based on historical earthquake events data using USA.com algorithms. It is an indicator of the earthquake level in a region. A higher earthquake index value means a higher chance of an earthquake.

Volcano Index, #1

Port Royal, PA
0.0000
Pennsylvania
0.0000
U.S.
0.0023

The volcano index value is calculated based on the currently known volcanoes using USA.com algorithms. It is an indicator of the possibility of a region being affected by a possible volcano eruption. A higher volcano index value means a higher chance of being affected.

Tornado Index, #1728

Port Royal, PA
86.35
Pennsylvania
109.77
U.S.
136.45

The tornado index value is calculated based on historical tornado events data using USA.com algorithms. It is an indicator of the tornado level in a region. A higher tornado index value means a higher chance of tornado events.

Other Weather Extremes Events

A total of 2,602 other weather extremes events within 50 miles of Port Royal, PA were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:2Cold:8Dense Fog:2Drought:11
Dust Storm:0Flood:370Hail:409Heat:24Heavy Snow:35
High Surf:0Hurricane:0Ice Storm:10Landslide:0Strong Wind:25
Thunderstorm Winds:1,616Tropical Storm:1Wildfire:0Winter Storm:21Winter Weather:0
Other:68 

Volcanos Nearby

No volcano is found in or near Port Royal, PA.

Historical Earthquake Events

No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Port Royal, PA.

No historical earthquake events found in or near Port Royal, PA.

Historical Tornado Events

A total of 31 historical tornado events that had recorded magnitude of 2 or above found in or near Port Royal, PA.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
9.21955-08-19240°24'N / 77°23'W0025K0Chester
10.91952-07-23240°37'N / 77°34'W0425K0Mifflin
12.91989-06-20240°22'N / 77°30'W2.00 Miles23 Yards0125K0Perry
13.51967-09-21240°25'N / 77°11'W0.10 Mile30 Yards00250K0Perry
14.01980-04-09240°44'N / 77°19'W40°43'N / 77°17'W00250K0Snyder
22.61989-11-20240°37'N / 77°49'W40°39'N / 77°47'W3.50 Miles1230 Yards0025K0Huntingdon
23.91991-09-18240°40'N / 77°49'W40°42'N / 77°47'W4.00 Miles330 Yards03250K0Huntingdon
31.41975-06-05240°45'N / 77°55'W00250K0Centre
33.81950-07-05240°36'N / 76°45'W003K0Dauphin
34.11961-04-16340°03'N / 77°31'W00250K0Cumberland
35.21977-04-05240°15'N / 76°50'W2.00 Miles67 Yards012.5M0Dauphin
36.91992-10-09240°07'N / 76°57'W2.00 Miles100 Yards002.5M0York
37.11978-08-28240°53'N / 76°52'W40°51'N / 76°48'W3.30 Miles50 Yards0125K0Snyder
37.51985-07-31240°10'N / 76°54'W40°09'N / 76°51'W3.00 Miles20 Yards02250K0Lancaster
37.61970-03-26240°16'N / 76°46'W2.50 Miles50 Yards00250K0Dauphin
38.81978-08-28240°51'N / 76°48'W40°52'N / 76°46'W0025K0Northumberland
39.61980-06-07240°01'N / 77°04'W40°02'N / 77°01'W2.30 Miles800 Yards002.5M0Adams
40.61953-09-12240°40'N / 76°41'W40°39'N / 76°35'W4.70 Miles50 Yards003K0Northumberland
40.61980-06-07240°02'N / 77°01'W40°02'N / 76°57'W3.30 Miles33 Yards002.5M0York
41.81967-10-18240°13'N / 76°45'W40°19'N / 76°36'W10.20 Miles30 Yards011250K0Dauphin
42.11976-03-21239°56'N / 77°15'W1.00 Mile50 Yards0025K0Adams
45.31957-11-19240°18'N / 76°35'W2.00 Miles13 Yards0025K0Lebanon
45.82004-07-14340°17'N / 76°35'W40°17'N / 76°35'W7.50 Miles500 Yards0018.0M0Lebanon
 Brief Description: Thunderstorms spawned a strong F3 tornado in southern Lebanon County during the afternoon of July 14. The tornado first touched down in far western Lebanon County at 3:05 pm EDT, about 1 mile west of the town of Campbelltown. The tornado traveled east, and struck a housing development about one quarter mile south of Route 322. A total of 32 homes were destroyed, with another 37 homes sustaining significant damage. An additional 50 homes and 9 farm buildings in the area were damaged by downburst winds associated with the thunderstorm which spawned the tornado. The tornado continued along a path to the east for seven and one half miles. The tornado crossed Route 322 west of Mount Pleasant, and continued east, mainly across fields, until it lifted up about 2 miles northwest of the town of Cornwall at 3:15 pm EDT. The width of the tornado was one quarter mile. Although the tornadic damage was confined to the path described, additional damage occurred outside this path, again associated with downburst winds from the parent thunderstorm. Winds were estimated between 175 and 200 MPH, making this a strong F3 tornado on the Fujita scale. The tornado injured 24 persons, one critically. There were no deaths. The American Red Cross opened a mass care center, where over 50 people required assistance with sheltering. Between 25,000 and 30,000 customers lost power in Lebanon and Berks Counties as a result of the storms.
45.91980-06-07339°56'N / 77°01'W1.50 Miles400 Yards00250K0Adams
46.51985-05-31341°11'N / 77°09'W41°08'N / 76°58'W11.00 Miles910 Yards22025.0M0Lycoming
46.61985-05-31441°10'N / 77°52'W41°13'N / 77°19'W29.00 Miles3330 Yards0025.0M0Clinton
48.11985-05-31341°08'N / 76°58'W41°09'N / 76°55'W4.00 Miles910 Yards22025.0M0Union
48.51970-07-02240°09'N / 76°37'W1.00 Mile1760 Yards0025K0Lancaster
48.61969-07-27240°04'N / 76°42'W0.30 Mile100 Yards00250K0York
49.11991-05-06240°05'N / 76°40'W1.00 Mile100 Yards03250K0Lancaster
49.41985-05-31341°09'N / 76°55'W41°07'N / 76°50'W4.00 Miles2640 Yards22025.0M0Northumberland


* The information on this page is based on the global volcano database, the U.S. earthquake database of 1638-1985, and the U.S. Tornado and Weather Extremes database of 1950-2010.


 
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