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Grinnell Public Schools Unified School District 291 Natural Disasters and Weather Extremes
Hot Rankings
The chance of earthquake damage in Grinnell Public Schools Unified School District 291 is about the same as Kansas average and is much lower than the national average. The risk of tornado damage in Grinnell Public Schools Unified School District 291 is much lower than Kansas average and is lower than the national average.
Earthquake Index, #156
| Grinnell Public Schools Unified School District 291 | 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
| Grinnell Public Schools Unified School District 291 | 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, #290
| Grinnell Public Schools Unified School District 291 | 124.15 |
| 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 3,364 other weather extremes events within 50 miles of Grinnell Public Schools Unified School District 291 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: | 3 | Cold: | 6 | Dense Fog: | 0 | Drought: | 11 |
| Dust Storm: | 0 | Flood: | 96 | Hail: | 2,296 | Heat: | 0 | Heavy Snow: | 12 |
| High Surf: | 0 | Hurricane: | 0 | Ice Storm: | 1 | Landslide: | 0 | Strong Wind: | 22 |
| Thunderstorm Winds: | 829 | Tropical Storm: | 0 | Wildfire: | 1 | Winter Storm: | 17 | Winter Weather: | 4 |
| Other: | 66 | ||||||||
Volcanos Nearby
No volcano is found in or near Grinnell Public Schools Unified School District 291.
Historical Earthquake Events
No historical earthquake events that had recorded magnitudes of 3.5 or above found in or near Grinnell Public Schools Unified School District 291.
No historical earthquake events found in or near Grinnell Public Schools Unified School District 291.
Historical Tornado Events
A total of 30 historical tornado events that had recorded magnitude of 2 or above found in or near Grinnell Public Schools Unified School District 291.
| Distance (miles) | Date | Magnitude | Start Lat/Log | End Lat/Log | Length | Width | Fatalities | Injuries | Property Damage | Crop Damage | Affected County |
| 5.8 | 1950-08-06 | 2 | 39°08'N / 100°38'W | 39°07'N / 100°28'W | 8.70 Miles | 33 Yards | 0 | 0 | 250K | 0 | Gove |
| 17.3 | 1956-10-29 | 2 | 39°17'N / 100°52'W | 39°22'N / 100°46'W | 7.60 Miles | 50 Yards | 0 | 0 | 0K | 0 | Thomas |
| 19.3 | 1956-10-29 | 2 | 39°19'N / 100°52'W | 39°24'N / 100°46'W | 7.70 Miles | 50 Yards | 0 | 0 | 0K | 0 | Thomas |
| 20.1 | 2008-05-23 | 4 | 38°56'N / 100°17'W | 39°06'N / 100°19'W | 11.00 Miles | 1320 Yards | 0 | 2 | 2.5M | 0K | Gove |
| Brief Description: EVENT NARRATIVE: A large wedge tornado developed about 9 miles SSW of Quinter and moved north, then northwest, eventually dissipating 2 miles SE of Park. This tornado caused extensive damage to several homes, including EF4 damage to one home which was completely destroyed. A car and a pickup truck were tossed or bounced 200 yards at the residence. Nearby, two other homes suffered extensive damage. This tornado caused two injuries, including the driver of a vehicle which was thrown off Interstate 70, and an older male attempting to get into his storm cellar when he was struck by flying debris. EPISODE NARRATIVE: Intense supercell thunderstorms moved north across the region during the afternoon and evening hours producing 10 tornadoes, including an F4 tornado just SW of Quinter. Extremely heavy rainfall also resulted in flooding in many areas. Many of these thunderstorms occurred in the same areas as the storms the previous day. | |||||||||||
| 22.7 | 2008-05-22 | 2 | 39°21'N / 100°30'W | 39°29'N / 100°31'W | 9.00 Miles | 300 Yards | 0 | 0 | 750K | 0K | Sheridan |
| Brief Description: EVENT NARRATIVE: This tornado developed just south of highway 24 west of Hoxie, and moved north nine miles before dissipating. It produced EF2 damage at a home on highway 24, removing much of the roof of the home and destroying a large metal outbuilding. Significant tree damage also occurred. South of the highway, an irrigation pivot was overturned and a second home suffered minor damage and a small outbuilding was destroyed. EPISODE NARRATIVE: A series of intense supercell thunderstorms moved north across the area during the afternoon and early evening hours. Long-track tornadoes, flash flooding, large hail and damaging winds were reported across much of northwest Kansas into extreme southern Nebraska. Eleven tornadoes were verified by storm chasers and damage surveys. | |||||||||||
| 22.8 | 1995-05-12 | 2 | 39°25'N / 101°03'W | 39°22'N / 100°42'W | 18.00 Miles | 1500 Yards | 0 | 1 | 0.7M | 3.5M | Thomas |
| Brief Description: Intermittent tornado damage included farm residence and storage buildings roofs torn off, high voltage electricty towers destroyed,irrigation rigs over-turned, trees snapped. Extensive crop damage from tornado, highs winds, and large hail. Tornado moved nearly due east at 25 mph and entered Sheridan County. One woman was slightly injured while in her home during the tornado. A mobile home was completely destroyed. | |||||||||||
| 23.1 | 2008-05-23 | 2 | 39°07'N / 100°14'W | 39°17'N / 100°15'W | 11.00 Miles | 1760 Yards | 0 | 0 | 1.0M | 0K | Sheridan |
| Brief Description: EVENT NARRATIVE: This tornado moved into southern Sheridan county from Gove county. It initially moved NNE, then straight north on Road 120E then turned back to the NNW before dissipating near Road 50S and 100E in Sheridan county. Approximately five miles of utility poles were broken or heavily damaged from a combination of tornado and rear flank downdraft winds. In addition, several farmsteads suffered damage to the home and outbuildings. A mobile home was blown off its supports and into a nearby home which was destroyed as a result. EPISODE NARRATIVE: Intense supercell thunderstorms moved north across the region during the afternoon and evening hours producing 10 tornadoes, including an F4 tornado just SW of Quinter. Extremely heavy rainfall also resulted in flooding in many areas. Many of these thunderstorms occurred in the same areas as the storms the previous day. | |||||||||||
| 26.7 | 1995-05-12 | 2 | 39°22'N / 100°17'W | 0.80 Mile | 200 Yards | 0 | 0 | 0 | 50K | Sheridan | |
| Brief Description: Tornado snapped large trees. | |||||||||||
| 27.6 | 1979-08-28 | 2 | 38°46'N / 100°35'W | 38°39'N / 100°42'W | 10.10 Miles | 200 Yards | 0 | 0 | 250K | 0 | Gove |
| 30.0 | 1954-04-25 | 2 | 39°03'N / 100°06'W | 0 | 0 | 25K | 0 | Trego | |||
| 30.2 | 1970-06-14 | 3 | 39°29'N / 100°31'W | 39°34'N / 100°27'W | 6.60 Miles | 900 Yards | 0 | 0 | 2.5M | 0 | Sheridan |
| 30.7 | 1968-05-13 | 3 | 38°29'N / 101°08'W | 39°08'N / 99°20'W | 106.8 Miles | 320 Yards | 0 | 0 | 25K | 0 | Scott |
| 32.1 | 1972-09-05 | 2 | 39°33'N / 100°28'W | 2.00 Miles | 100 Yards | 0 | 0 | 3K | 0 | Sheridan | |
| 32.7 | 1959-05-29 | 2 | 39°12'N / 100°06'W | 39°16'N / 100°02'W | 5.60 Miles | 77 Yards | 0 | 0 | 25K | 0 | Graham |
| 33.0 | 1972-04-30 | 3 | 38°39'N / 100°29'W | 1.00 Mile | 50 Yards | 0 | 2 | 3K | 0 | Lane | |
| 35.5 | 1971-10-17 | 3 | 39°09'N / 101°19'W | 0 | 0 | 0K | 0 | Lyon | |||
| 36.2 | 1964-05-05 | 2 | 38°33'N / 100°44'W | 38°37'N / 100°37'W | 7.60 Miles | 33 Yards | 0 | 0 | 25K | 0 | Scott |
| 36.7 | 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 |
| 38.2 | 1972-09-05 | 2 | 39°37'N / 100°27'W | 39°39'N / 100°25'W | 2.30 Miles | 80 Yards | 0 | 0 | 250K | 0 | Decatur |
| 38.5 | 1970-06-14 | 3 | 39°34'N / 100°27'W | 39°41'N / 100°19'W | 10.60 Miles | 900 Yards | 0 | 5 | 2.5M | 0 | Decatur |
| 39.7 | 1972-04-30 | 3 | 38°32'N / 100°22'W | 38°41'N / 100°13'W | 13.10 Miles | 300 Yards | 0 | 0 | 25K | 0 | Lane |
| 40.9 | 2005-06-09 | 3 | 38°51'N / 100°00'W | 38°55'N / 99°54'W | 6.00 Miles | 200 Yards | 0 | 0 | 0 | 0 | Trego |
| Brief Description: Significant damage was done to several farms, outbuildings and trees. One 1500 pound heifer was thrown 1/4 mile. The tornado actually made a loop traveling back west, south then back to the north and it dissipated rather rapidly (from video). Some of the structures were protected in a ravine but still sustained major damage. Several cottonwood trees with six foot diameter trunks were pulled out of the ground. This tornado did high-end F3 damage. | |||||||||||
| 41.7 | 1951-06-27 | 4 | 39°02'N / 99°53'W | 0.80 Mile | 300 Yards | 5 | 100 | 2.5M | 0 | Trego | |
| 42.0 | 1951-05-14 | 2 | 39°22'N / 101°22'W | 0 | 0 | 0K | 0 | Thomas | |||
| 44.2 | 2005-06-09 | 2 | 39°17'N / 99°57'W | 39°21'N / 99°48'W | 9.50 Miles | 400 Yards | 0 | 0 | 0 | 0 | Graham |
| Brief Description: A significant tornado (rated F2 based on damage survey) touched down 8 miles SW of Hill City near Road 220 and Road J at approximately 4:20 pm CDT. As the tornado continued northeast toward Road 260 and Road M it damaged two homes and destroyed a detached garage. One home suffered roof damage while another had part of the roof from the upper story removed. Significant and continuous tree and power pole damage was noted for one mile south of this location. Some of this damage was likely produced by an intense rear-flank downdraft accompanying the southern periphery of the tornado. As the tornado crossed Highway 283 approximately 3.5 miles south of Hill City, it caused structural damage to a hangar used as storage. A boat, a small four-wheeler and a camper were either heavily damaged or destroyed, with debris rolled or bounced between one-half and three-fourths of a mile. The tornado crossed the intersection of Road 290 and Road O producing tree damage. The tornado ultimately lifted about a half mile northeast of this location at approximately 4:48 pm CDT. | |||||||||||
| 45.9 | 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 |
| 45.9 | 1950-07-02 | 2 | 38°28'N / 100°53'W | 1.00 Mile | 90 Yards | 0 | 0 | 2.5M | 0 | Scott | |
| 46.2 | 1953-06-07 | 2 | 39°21'N / 99°51'W | 0 | 0 | 25K | 0 | Graham | |||
| 46.8 | 1971-05-17 | 2 | 38°44'N / 100°05'W | 38°47'N / 99°44'W | 19.10 Miles | 33 Yards | 0 | 0 | 250K | 0 | Trego |
| 48.7 | 1951-08-24 | 2 | 39°47'N / 100°55'W | 39°48'N / 100°51'W | 3.30 Miles | 100 Yards | 0 | 0 | 25K | 0 | Rawlins |
* 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.