Greeley County Schools Unified School District 200 Natural Disasters and Weather Extremes
The chance of earthquake damage in Greeley County Schools Unified School District 200 is about the same as Kansas average and is much lower than the national average. The risk of tornado damage in Greeley County Schools Unified School District 200 is much lower than Kansas average and is lower than the national average.
Earthquake Index, #212
| Greeley County Schools Unified School District 200 | 0.01 |
| Kansas | 0.05 |
| 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
| Greeley County Schools Unified School District 200 | 0.0000 |
| Kansas | 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, #294
| Greeley County Schools Unified School District 200 | 118.21 |
| Kansas | 252.53 |
| 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 2,878 other weather extremes events within 50 miles of Greeley County Schools Unified School District 200 were recorded from 1950 to 2010. The following is a break down of these events:
| Type | Count | Type | Count | Type | Count | Type | Count | Type | Count |
| Avalanche: | 0 | Blizzard: | 6 | Cold: | 7 | Dense Fog: | 0 | Drought: | 12 |
| Dust Storm: | 0 | Flood: | 90 | Hail: | 2,026 | Heat: | 0 | Heavy Snow: | 12 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 0 | Landslide: | 0 | Strong Wind: | 26 |
| Thunderstorm Winds: | 615 | Tropical Storm: | 0 | Wildfire: | 4 | Winter Storm: | 15 | Winter Weather: | 3 |
| Other: | 62 | ||||||||
Volcanos Nearby
No volcano is found in or near Greeley County Schools Unified School District 200.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Greeley County Schools Unified School District 200.
No historical earthquake events found in or near Greeley County Schools Unified School District 200.
Historical Tornado Events
A total of 24 historical tornado events that had recorded magnitude of 2 or above found in or near Greeley County Schools Unified School District 200.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 8.1 | 1963-11-21 | 2 | 38°15'N / 101°44'W | 38°36'N / 101°34'W | 25.70 Miles | 100 Yards | 0 | 0 | 3K | 0 | Hamilton |
| 19.7 | 2007-03-28 | 2 | 38°15'N / 102°04'W | 38°24'N / 102°04'W | 11.00 Miles | 400 Yards | 0 | 0 | 10K | 0K | Kiowa |
| Brief Description: EVENT NARRATIVE: The Prowers County tornado crossed into Kiowa County and traveled another 11 miles...destroying electrical transmission poles (EF2 damage). The tornado did not hit any other structures in Kiowa County. EPISODE NARRATIVE: A few severe thunderstorms occurred over extreme southeast Colorado... producing damaging winds and large hail. One supercell generated large hail...damaging winds...and two tornadoes. The tornado which struck Holly...rural northeast Prowers County...and rural southeast Kiowa County had a maximum rating of EF3. The path width reached a maximum of around 900 yards in extreme northeast Prowers County. Prior to this...as the tornado moved through Holly...the path width was around 600 feet. Over 200 residences and other buildings were affected or destroyed. Two people were killed and nine others were injured. The damage path was around 28 miles long...extending into Kiowa County. The last substantial damage with the tornado was 12 miles north of Holly...in northeast Prowers County...where a ranch sustained high end EF3 damage. As the supercell cycled through...another tornado occurred east of Towner...and moved into Kansas. | |||||||||||
| 23.0 | 1999-06-22 | 3 | 38°22'N / 101°21'W | 38°19'N / 101°26'W | 4.00 Miles | 880 Yards | 0 | 0 | 250K | 0 | Wichita |
| Brief Description: A large tornado (F3) destroyed a farmstead. The house was nearly flattened by the tornado, and a tractor and grain combine/harvester were rolled several hundred feet. Tornado moved from East to West. | |||||||||||
| 25.4 | 1958-07-20 | 3 | 38°52'N / 101°56'W | 38°49'N / 101°54'W | 3.30 Miles | 700 Yards | 0 | 4 | 25K | 0 | Wallace |
| 27.1 | 1966-07-06 | 2 | 38°06'N / 101°48'W | 0 | 1 | 25K | 0 | Hamilton | |||
| 28.8 | 1962-05-17 | 2 | 37°59'N / 101°47'W | 38°10'N / 101°47'W | 12.60 Miles | 250 Yards | 0 | 0 | 25K | 0 | Hamilton |
| 30.6 | 2007-03-28 | 3 | 38°01'N / 102°07'W | 38°16'N / 102°07'W | 17.00 Miles | 900 Yards | 2 | 9 | 4.0M | 0K | Prowers |
| Brief Description: EVENT NARRATIVE: With a maximum rating of EF3 and a maximum damage path width of 900 yards, the tornado raced through Holly, causing two fatalities and nine injuries. EPISODE NARRATIVE: A few severe thunderstorms occurred over extreme southeast Colorado... producing damaging winds and large hail. One supercell generated large hail...damaging winds...and two tornadoes. The tornado which struck Holly...rural northeast Prowers County...and rural southeast Kiowa County had a maximum rating of EF3. The path width reached a maximum of around 900 yards in extreme northeast Prowers County. Prior to this...as the tornado moved through Holly...the path width was around 600 feet. Over 200 residences and other buildings were affected or destroyed. Two people were killed and nine others were injured. The damage path was around 28 miles long...extending into Kiowa County. The last substantial damage with the tornado was 12 miles north of Holly...in northeast Prowers County...where a ranch sustained high end EF3 damage. As the supercell cycled through...another tornado occurred east of Towner...and moved into Kansas. | |||||||||||
| 33.2 | 1956-07-12 | 2 | 38°29'N / 101°12'W | 38°29'N / 101°07'W | 4.50 Miles | 33 Yards | 0 | 0 | 25K | 0 | Wichita |
| 33.7 | 1968-05-13 | 3 | 38°26'N / 101°10'W | 38°29'N / 101°08'W | 3.60 Miles | 320 Yards | 0 | 4 | 25K | 0 | Wichita |
| 34.1 | 1968-06-24 | 2 | 38°04'N / 102°07'W | 38°05'N / 102°06'W | 0 | 1 | 25K | 0 | Prowers | ||
| 35.1 | 1954-05-26 | 2 | 37°59'N / 101°46'W | 0.50 Mile | 100 Yards | 0 | 0 | 250K | 0 | Hamilton | |
| 35.6 | 1958-07-20 | 2 | 38°50'N / 102°16'W | 0 | 5 | 25K | 0 | Cheyenne | |||
| 36.9 | 1954-06-10 | 2 | 38°08'N / 101°16'W | 0 | 0 | 25K | 0 | Kearny | |||
| 39.8 | 1982-05-19 | 3 | 39°04'N / 101°43'W | 2.00 Miles | 400 Yards | 0 | 0 | 2.5M | 0 | Sherman | |
| 41.7 | 1956-07-12 | 2 | 38°29'N / 101°07'W | 38°20'N / 100°54'W | 15.50 Miles | 33 Yards | 1 | 0 | 25K | 0 | Scott |
| 41.9 | 1979-06-16 | 2 | 38°52'N / 102°25'W | 38°52'N / 102°21'W | 3.00 Miles | 200 Yards | 0 | 0 | 2.5M | 0 | Cheyenne |
| 42.5 | 1962-06-07 | 2 | 39°00'N / 101°21'W | 39°00'N / 101°18'W | 1.90 Miles | 400 Yards | 0 | 0 | 25K | 0 | Logan |
| 44.6 | 1967-06-23 | 3 | 38°09'N / 101°15'W | 38°02'N / 101°00'W | 15.80 Miles | 33 Yards | 0 | 0 | 0K | 0 | Kearny |
| 46.0 | 1951-05-20 | 2 | 37°58'N / 101°15'W | 1.00 Mile | 33 Yards | 0 | 0 | 25K | 0 | Kearny | |
| 46.2 | 1951-06-20 | 2 | 38°28'N / 101°22'W | 38°29'N / 100°28'W | 48.60 Miles | 33 Yards | 0 | 0 | 25K | 0 | Wichita |
| 48.1 | 1950-07-02 | 2 | 38°28'N / 100°53'W | 1.00 Mile | 90 Yards | 0 | 0 | 2.5M | 0 | Scott | |
| 49.1 | 2000-10-31 | 2 | 39°09'N / 101°59'W | 39°14'N / 101°53'W | 7.00 Miles | 250 Yards | 0 | 0 | 0 | 0 | Sherman |
| Brief Description: Tornado destroyed abandoned house and garage as it entered southwest Sherman County from Wallace County. Tornado also ripped out utility poles and trees. It was likely the widest just after crossing the county line, and was briefly described as an "elephant trunk" tornado by storm spotters. | |||||||||||
| 49.7 | 1973-05-06 | 2 | 39°05'N / 102°18'W | 1.00 Mile | 100 Yards | 0 | 5 | 25K | 0 | Kit Carson | |
| 50.0 | 1975-05-10 | 2 | 38°46'N / 102°45'W | 38°28'N / 102°37'W | 21.90 Miles | 440 Yards | 0 | 0 | 0K | 0 | Cheyenne |
* 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.