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Greycliff Elementary School District Natural Disasters and Weather Extremes

 
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The chance of earthquake damage in Greycliff Elementary School District is lower than Montana average and is lower than the national average. The risk of tornado damage in Greycliff Elementary School District is about the same as Montana average and is much lower than the national average.

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

Earthquake Index, #117

Greycliff Elementary School District
0.65
Montana
1.98
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, #40

Greycliff Elementary School District
0.0011
Montana
0.0002
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, #252

Greycliff Elementary School District
4.15
Montana
7.73
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 604 other weather extremes events within 50 miles of Greycliff Elementary School District were recorded from 1950 to 2010. The following is a break down of these events:

TypeCountTypeCountTypeCountTypeCountTypeCount
Avalanche:1Blizzard:1Cold:0Dense Fog:0Drought:2
Dust Storm:0Flood:11Hail:337Heat:0Heavy Snow:25
High Surf:0Hurricane:0Ice Storm:0Landslide:0Strong Wind:5
Thunderstorm Winds:148Tropical Storm:0Wildfire:9Winter Storm:29Winter Weather:0
Other:36 

Volcanos Nearby

A total of 1 volcano is found in or near Greycliff Elementary School District.

Distance (miles)NameRegionLatitudeLongitudeElevation (foot)TypeStatusLast Eruption
99.7YellowstoneUS-Wyoming, United States44.43-110.672805CalderaTephrochronologyLast known eruption B.C. (Holocene)

Historical Earthquake Events

No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Greycliff Elementary School District.

No historical earthquake events found in or near Greycliff Elementary School District.

Historical Tornado Events

A total of 2 historical tornado events that had recorded magnitude of 2 or above found in or near Greycliff Elementary School District.

Distance (miles)DateMagnitudeStart Lat/LogEnd Lat/LogLengthWidthFatalitiesInjuriesProperty DamageCrop DamageAffected County
43.82010-07-02246°10'N / 110°26'W46°12'N / 110°24'W2.00 Miles150 Yards0032.5M0KPark
 Brief Description: EVENT NARRATIVE: At approximately 345pm to about 352pm, a supercell thunderstorm produced a tornado with surrounding microburst damage occurred about 15 miles northeast of Wilsall over the foothills of the Crazy Mountains in Park County. Thousands of trees were damaged, including large trees that were uprooted or snapped off at the base. Trees as large as three to four feet in diameter were uprooted and/or snapped. EF-2 scale damage with estimated wind speeds up to 120 mph was determined with this tornado. EPISODE NARRATIVE: At approximately 345pm to about 352pm, a supercell thunderstorm producing a tornado with surrounding microburst damage along with large hail occurred about 15 miles northeast of Wilsall over the foothills of the Crazy Mountains in Park County. Thousands of trees were damaged, including large trees that were uprooted or snapped off at the base. Trees as large as three to four feet in diameter were uprooted and/or snapped. EF-2 scale damage with estimated wind speeds up to 120 mph was determined with this tornado. Large hail was also reported with this thunderstorm as it moved east of the Crazy Mountains.
46.31964-07-20246°24'N / 109°48'W2.00 Miles33 Yards000K0Fergus


* 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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