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Saint Thomas, PA Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Saint Thomas is about the same as Pennsylvania average and is much lower than the national average. The risk of tornado damage in Saint Thomas 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, #1219

Saint Thomas, 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

Saint Thomas, 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, #1839

Saint Thomas, PA
81.45
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 3,199 other weather extremes events within 50 miles of Saint Thomas, PA were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:0Blizzard:3Cold:27Dense Fog:16Drought:17
Dust Storm:0Flood:490Hail:469Heat:32Heavy Snow:46
High Surf:0Hurricane:0Ice Storm:16Landslide:0Strong Wind:58
Thunderstorm Winds:1,706Tropical Storm:2Wildfire:1Winter Storm:58Winter Weather:48
Other:210 

Volcanos Nearby

No volcano is found in or near Saint Thomas, PA.

Historical Earthquake Events

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

No historical earthquake events found in or near Saint Thomas, PA.

Historical Tornado Events

A total of 25 historical tornado events that had recorded magnitude of 2 or above found in or near Saint Thomas, PA.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
18.11961-04-16340°03'N / 77°31'W00250K0Cumberland
29.61976-03-21239°56'N / 77°15'W1.00 Mile50 Yards0025K0Adams
33.41983-05-22339°42'N / 77°15'W39°42'N / 77°14'W1.00 Mile37 Yards0025K0Frederick
34.41983-05-22339°42'N / 77°14'W39°43'N / 77°12'W1.00 Mile37 Yards0025K0Carroll
35.31989-06-20240°22'N / 77°30'W2.00 Miles23 Yards0125K0Perry
37.12004-09-17239°24'N / 77°33'W39°24'N / 77°39'W3.00 Miles200 Yards005K0Frederick
 Brief Description: An F2 tornado touched down in far northwest Frederick County, on the northwest edge of Catoctin Mountain Park. A thickly forested stand of hardwood trees was snapped off above the bases.
37.71954-04-25239°50'N / 77°14'W39°48'N / 76°59'W13.30 Miles500 Yards0025K0Adams
38.11996-07-19239°23'N / 77°42'W39°21'N / 77°42'W2.00 Miles125 Yards00400K75KWashington
 Brief Description: A moderate tornado (F2) tracked between two mountain ridges in extreme southern Washington Co, knocking down hundreds of trees, including several onto homes which caused substantial damage. At least one barn was completely destroyed in Yarrowsburg. The storm attained maximum strength just south of town (where the trees, including numerous hardwoods, were flattened). The tornado weakened considerably before dissipating along the eastern ridge. Structural and vehicle damage, though not as prevalent as the tree damage, included the following: Portions of roofs from two barns were blown off; minor residential damage, including shattered windows, unhinged shingles, and torn off trim/gutters. Some gravestones were overturned by the winds, and several power lines were knocked down. Several vehicles and vehicle windows were damaged.
39.02004-09-17239°22'N / 78°02'W39°23'N / 78°02'W2.00 Miles100 Yards0625K0Berkeley
 Brief Description: A tornado touched down in Darkesville in southern Berkeley County. The F2 tornado produced extensive structural damage to homes and businesses in the area. The storm traveled north and toppled tractor trailers and vehicles on Interstate-81. At least 6 people were injured from the automobile accidents.
40.51955-08-19240°24'N / 77°23'W0025K0Chester
41.31980-06-07240°01'N / 77°04'W40°02'N / 77°01'W2.30 Miles800 Yards002.5M0Adams
41.91980-06-07339°56'N / 77°01'W1.50 Miles400 Yards00250K0Adams
42.91989-11-16239°15'N / 77°47'W39°20'N / 77°48'W9.00 Miles50 Yards03250K0Jefferson
42.91978-07-31239°24'N / 77°21'W1.50 Miles100 Yards0025K0Frederick
43.01978-08-28239°48'N / 77°02'W39°45'N / 77°00'W3.30 Miles20 Yards003K0Adams
44.41980-06-07240°02'N / 77°01'W40°02'N / 76°57'W3.30 Miles33 Yards002.5M0York
45.01978-08-28239°45'N / 77°00'W39°43'N / 76°59'W1.90 Miles33 Yards003K0York
46.11961-07-13239°19'N / 78°12'W013K0Frederick
46.22001-09-24239°44'N / 76°59'W39°48'N / 76°56'W5.00 Miles200 Yards00900K0York
 Brief Description: A tornado touched down near Grand Valley Road at 17:33 EST about 5 miles South of Hanover PA. The tornado proceded northward, through Parkville then lifting to the north of Blooming Grove at 17:40 EST. The path of the tornado was about 5 miles in length but not always on the ground while the width varied from 50 to 200 yards. The top wind speeds were estimated at 110 to 120 mph. There were no injuries or deaths. Significant damage included 8 homes with roofs torn off, brick and structural damage to several additional homes, 50 to 75 trees knocked down, 38 cars damaged at a car dealership, significant roof and water damage to a middle school and administration building, and significant structural damage to a store complex northwest of Blooming Grove.
47.51992-10-09240°07'N / 76°57'W2.00 Miles100 Yards002.5M0York
48.01967-09-21240°25'N / 77°11'W0.10 Mile30 Yards00250K0Perry
48.41975-08-04239°14'N / 78°02'W0.80 Mile100 Yards00250K0Clarke
48.51979-05-23239°35'N / 77°00'W2.00 Miles150 Yards002.5M0Carroll
48.61990-06-08239°49'N / 76°54'W1.00 Mile60 Yards01250K0York
49.81989-11-20240°37'N / 77°49'W40°39'N / 77°47'W3.50 Miles1230 Yards0025K0Huntingdon


* 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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