torre126/tornado-structure-data huggingface dataset:
Episode narrative: Convection percolated along a warm front across the area through the morning. By afternoon, storms re-strengthened as as daytime heating helped enhance instability. Despite good instability with MLCAPE over nearing 2000 J/kg, lapse rates were modest and speed shear was weak. Despite this, directional shear was good and when combined with instability for brief stretching, allowed for a number of weak and short-lived tornadoes to develop. While 13 tornadoes occurred, they were confined to two small areas in Iowa where storms trained, resulting in several storms over the same locations. In addition, the training storms made for pockets of heavy rain with three to four inches or more of rain. This did result in flash flooding in Pocahontas County with impacts to homes and businesses.

Tornado event in CALHOUN County, IOWA
Start: 13-MAY-23 15:51:00
End: 13-MAY-23 15:53:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Brief tornado reported by storm chaser southwest of Fonda. No damage indicators were impacted, therefore the EFU rating.

Tornado event in GREENE County, IOWA
Start: 13-MAY-23 16:18:00
End: 13-MAY-23 16:20:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Brief tornado east of Scranton captured by storm chaser. Tornado remained in open fields with no impact to damage indicators, hence the EFU rating.

Tornado event in MARION County, IOWA
Start: 13-MAY-23 17:20:00
End: 13-MAY-23 17:21:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Brief tornado reported by storm chaser. No damage indicators were impacted, hence the EFU rating.
Episode narrative: A cluster of thunderstorms developed along a dryline and moved slowly across parts of northeast Kansas during the late afternoon and evening of May 12th.  At least 5 tornadoes were documented from these storms.  A couple of the tornadoes did produce damage to structures in Jackson and Brown Counties.

Tornado event in BROWN County, KANSAS
Start: 12-MAY-23 18:18:00
End: 12-MAY-23 18:18:00
Direct deaths: 0
Event narrative: A power pole was downed on the Kansas side of 340th street which appeared to be related to a tornado that began just south of the state line and then crossed into Nebraska around 718 pm on May 12th.
Episode narrative: Widespread thunderstorms developed during the afternoon of Sunday April 2 in the vicinity of a dryline and a warm front, both of which were draped across the area. Many of these storms became severe, and a few storms in Central Texas produced large hail up to 3 inches. Another storm moving through Falls and Limestone County produced 4 brief tornadoes. Additional storms developed the afternoon of Monday April 3 along the dryline, which had surged east to near the I-35 corridor. Fewer storms occurred on Monday, but some still became severe.

Tornado event in FALLS County, TEXAS
Start: 02-APR-23 16:15:00
End: 02-APR-23 16:18:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A narrow tornado was videoed in a field for 2-3 minutes. The exact location is unknown but is close to the plotted track. This tornado was the first of 4 brief tornadoes a parent supercell produced as it moved across Falls and Limestone counties.
Episode narrative: Convection percolated along a warm front across the area through the morning. By afternoon, storms re-strengthened as as daytime heating helped enhance instability. Despite good instability with MLCAPE over nearing 2000 J/kg, lapse rates were modest and speed shear was weak. Despite this, directional shear was good and when combined with instability for brief stretching, allowed for a number of weak and short-lived tornadoes to develop. While 13 tornadoes occurred, they were confined to two small areas in Iowa where storms trained, resulting in several storms over the same locations. In addition, the training storms made for pockets of heavy rain with three to four inches or more of rain. This did result in flash flooding in Pocahontas County with impacts to homes and businesses.

Tornado event in CALHOUN County, IOWA
Start: 13-MAY-23 17:22:00
End: 13-MAY-23 17:24:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Tornado developed east of Pomeroy and moved north passing into Pocahontas county shortly after forming.  The tornado remained in open fields in Calhoun county and did not impact any damage indicators, hence the EFU rating for this portion of the path.

Tornado event in POCAHONTAS County, IOWA
Start: 13-MAY-23 17:24:00
End: 13-MAY-23 17:27:00
Direct deaths: 0
Property damage: 20.00K
Event narrative: Tornado developed east of Pomeroy and moved north from Calhoun into Pocahontas county. Upon entering Pocahontas county, the tornado produced some damage to grain bins and an outbuilding. The remainder of the path was over open cropland.

Tornado event in POCAHONTAS County, IOWA
Start: 13-MAY-23 17:26:00
End: 13-MAY-23 17:28:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Brief tornado caught on video northwest of Pocahontas. It appears no damage indicators were impacted, hence the EFU rating.
Episode narrative: A broken line of heavy rain showers and thunderstorms developed across western North Carolina during the late afternoon and evening. A couple of the storms produced severe weather, the most notable of which produced wind damage and a rare brief tornado in  the southern mountains.

Tornado event in HENDERSON County, NORTH CAROLINA
Start: 07-MAY-23 18:30:00
End: 07-MAY-23 18:31:00
Direct deaths: 0
Property damage: 100.00K
Event narrative: NWS storm survey found the path of an EF0 tornado that touched down near the intersection of Leslie Way and Sugarloaf Rd and tracked southeast across Sugarloaf Ln and near Naomi Dr. Damage was primarily limited to multiple uprooted trees and snapped large limbs in this area, although minor damage occurred to the roof of one home and to the exterior of a manufactured home. A couple of other houses were damaged by falling trees. The path became more intermittent from there, but additional tree damage was found in a wooded area southeast of Naomi Ln. This was the first confirmed tornado in Henderson County since 21 August 1977, when an F1 tornado tracked from the Dana community into the Green River Game Land area of Polk County.
Episode narrative: A line of strong thunderstorms moved into north and central Georgia during the afternoon through the evening on Thursday, January 12th and spawned numerous tornadoes, including several that were long track and significant. Ahead of this line, a few supercells also spawned tornadoes in portions of central and eastern Georgia.  Upon further examination of radar data and high resolution areal imagery, it was found that several tornadoes rotated around and within a larger vortex and caused the widespread damage in the area near Griffin GA, over 2 miles wide in some cases.   The result was that as many as 4 tornadoes were on the ground simultaneously in SW Spalding County, which were rotating around the larger circulation, merging together in several cases and crossing paths. The presence of 3 mergers was identified in the reanalysis. Additional analysis revealed that wind speeds in the EF3 storm reached as high as 155mph or high end EF3.  This confirmed a total of 14 tornadoes, including 10 which resulted from the same storm/larger mesocyclone.

Tornado event in NEWTON County, GEORGIA
Start: 12-JAN-23 16:53:00
End: 12-JAN-23 16:57:00
Direct deaths: 0
Event narrative: The circulation which was the long track EF3 tornado through Griffin GA regenerated a tornado in NW Butts County after crossing out of Henry County. This particular tornado first touched West of Fincherville Rd snapping and uprooting numerous trees on both sides of the road and in the forest land to the west and east. The storm continued Northeast crossing Keys Ferry Road where much of the wind damage became intertwined with the long track tornado to the south of it. Damage was noted near Parker Rd and Hwy 36, Hwy 162 and Hwy 36 and along Hwy 36 just south of the Yellow River Bridge. The tornado paralleled Hwy 36 snapping and uprooting trees from Malcom Rd and Hwy 36 through Stewart Church Road, Heatherstone Way and the intersection of Hwy 212 and Hwy 36 where a barn was destroyed, several trees were snapped and uprooted, and a large section of roof was removed from a car wash. Severe tree damage and damage to a greenhouse and a few homes were noted along Stewart Church road. Areal survey confirms the tornado did not last long after crossing hwy 212 and lifted as it approached the Alcovy River. It should be noted that the damage from this tornado is very close to and possibly butting up against the damage area defined by the long track tornado which crossed through the Jackson Lake area. As a result, the damage area from both in some cases is nearly 2.5 miles across with swaths of more severe damage where the circulation of the actual tornado can be tracked. Combined with the severe winds and inflow winds, significant damage was noted all across this region of northern Butts, Southern Newton and western Jasper counties and much of the Jackson Lake area.
Episode narrative: Convection percolated along a warm front across the area through the morning. By afternoon, storms re-strengthened as as daytime heating helped enhance instability. Despite good instability with MLCAPE over nearing 2000 J/kg, lapse rates were modest and speed shear was weak. Despite this, directional shear was good and when combined with instability for brief stretching, allowed for a number of weak and short-lived tornadoes to develop. While 13 tornadoes occurred, they were confined to two small areas in Iowa where storms trained, resulting in several storms over the same locations. In addition, the training storms made for pockets of heavy rain with three to four inches or more of rain. This did result in flash flooding in Pocahontas County with impacts to homes and businesses.

Tornado event in MARION County, IOWA
Start: 13-MAY-23 17:52:00
End: 13-MAY-23 17:55:00
Direct deaths: 0
Property damage: 2.00K
Event narrative: A brief tornado occurred north of Highway 5 captured by many chasers. There was some tree damage produced by the tornado before dissipating.

Tornado event in POCAHONTAS County, IOWA
Start: 13-MAY-23 17:52:00
End: 13-MAY-23 17:54:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A brief tornado was sighted by law enforcement passing across open farmland. No damage indicators were impacted, hence the EFU rating.

Tornado event in POCAHONTAS County, IOWA
Start: 13-MAY-23 18:22:00
End: 13-MAY-23 18:24:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Brief tornado that remained in open cropland. No damage indicators were impacted, hence the EFU rating.
Episode narrative: During the afternoon hours, scattered storms developed over Northwest Kansas as a warm front moved north. These storms produced hail ranging from pea to golf ball in size and a brief tornado near the town of Selden. The largest hail fell near the towns of Selden, Levant, and Edson. Heavy rain with amounts up to  five inches produced flash flooding over portions of Thomas and Sheridan counties. These storms also produced strong winds with gusts up to 81 mph reported. The peak gust occurred just south of Selden, Kansas.

Tornado event in SHERIDAN County, KANSAS
Start: 10-MAY-23 16:26:00
End: 10-MAY-23 16:30:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Tornado reported northwest of Selden, KS. Tornado remained over open fields along the Sheridan and Decatur County borders. No damage was reported as a result of this tornado.
Episode narrative: A very strong system developed on the morning of March 31st and tracked across the state of Iowa. This system pulled unseasonably warm and moist air into the Midwest, which combined with a very favorable wind profile to create a volatile environment for severe thunderstorms.  Discrete supercell thunderstorms occurred initially, but quickly transitioned into a QLCS mode. This system produced a historic tornado outbreak for the area, with a record 29 tornadoes on the day, including 13 rated EF-2, 1 rated EF-3, and 1 rated EF-4. This was the first EF-4 tornado in the NWS Quad Cities service area since 1995. 11 injuries were reported, with no known fatalities. In addition to the numerous tornadoes, there were many large hail and damaging wind reports. Maximum straight line thunderstorm winds were estimated at 80 to 90 mph.

Tornado event in JOHNSON County, IOWA
Start: 31-MAR-23 15:53:00
End: 31-MAR-23 16:08:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: The tornado began southwest of Hills and moved northeast, crossing Highway 218 through the northwest portions of town. The tornado destroyed several outbuildings, large trees, and trim/siding on houses. The greatest damage was seen in western portions of the town of Hills, where roofs were completely torn off, siding removed from several homes and a large outbuilding destroyed. The tornado then proceeded through a wooded area with several trees snapped. It then continued northeast, destroying siding and roofs on several homes on the extreme southeast side of Iowa City. The tornado continued northeast and crossed Herbert Hoover Highway before lifting.  Johnson County EMA provided outstanding support to determine the final portion of this track.

Tornado event in CEDAR County, IOWA
Start: 31-MAR-23 16:06:00
End: 31-MAR-23 16:16:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Most of the tornado path was identified during a post-event analysis of Sentinel satellite data. Near the end of the path, some damage to trees was found, resulting in the EF0 rating.
Episode narrative: A line of strong thunderstorms moved into north and central Georgia during the afternoon through the evening on Thursday, January 12th and spawned numerous tornadoes, including several that were long track and significant. Ahead of this line, a few supercells also spawned tornadoes in portions of central and eastern Georgia.  Upon further examination of radar data and high resolution areal imagery, it was found that several tornadoes rotated around and within a larger vortex and caused the widespread damage in the area near Griffin GA, over 2 miles wide in some cases.   The result was that as many as 4 tornadoes were on the ground simultaneously in SW Spalding County, which were rotating around the larger circulation, merging together in several cases and crossing paths. The presence of 3 mergers was identified in the reanalysis. Additional analysis revealed that wind speeds in the EF3 storm reached as high as 155mph or high end EF3.  This confirmed a total of 14 tornadoes, including 10 which resulted from the same storm/larger mesocyclone.

Tornado event in BUTTS County, GEORGIA
Start: 12-JAN-23 16:49:00
End: 12-JAN-23 16:53:00
Direct deaths: 0
Event narrative: The circulation which was the long track EF3 tornado through Griffin GA regenerated a tornado in NW Butts County after crossing out of Henry County. This particular tornado first touched West of Fincherville Rd snapping and uprooting numerous trees on both sides of the road and in the forest land to the west and east. The storm continued Northeast crossing Keys Ferry Road where much of the wind damage became intertwined with the long track tornado to the south of it. Damage was noted near Parker Rd and Hwy 36, Hwy 162 and Hwy 36 and along Hwy 36 just south of the Yellow River Bridge. The tornado paralleled Hwy 36 snapping and uprooting trees from Malcom Rd and Hwy 36 through Stewart Church Road, Heatherstone Way and the intersection of Hwy 212 and Hwy 36 where a barn was destroyed, several trees were snapped and uprooted, and a large section of roof was removed from a car wash. Severe tree damage and damage to a greenhouse and a few homes were noted along Stewart Church road. Areal survey confirms the tornado did not last long after crossing hwy 212 and lifted as it approached the Alcovy River. It should be noted that the damage from this tornado is very close to and possibly butting up against the damage area defined by the long track tornado which crossed through the Jackson Lake area. As a result, the damage area from both in some cases is nearly 2.5 miles across with swaths of more severe damage where the circulation of the actual tornado can be tracked. Combined with the severe winds and inflow winds, significant damage was noted all across this region of northern Butts, Southern Newton and western Jasper counties and much of the Jackson Lake area.
Episode narrative: Convection percolated along a warm front across the area through the morning. By afternoon, storms re-strengthened as as daytime heating helped enhance instability. Despite good instability with MLCAPE over nearing 2000 J/kg, lapse rates were modest and speed shear was weak. Despite this, directional shear was good and when combined with instability for brief stretching, allowed for a number of weak and short-lived tornadoes to develop. While 13 tornadoes occurred, they were confined to two small areas in Iowa where storms trained, resulting in several storms over the same locations. In addition, the training storms made for pockets of heavy rain with three to four inches or more of rain. This did result in flash flooding in Pocahontas County with impacts to homes and businesses.

Tornado event in WARREN County, IOWA
Start: 13-MAY-23 12:22:00
End: 13-MAY-23 12:24:00
Direct deaths: 0
Property damage: 0.50K
Event narrative: Storm Chaser has video of the weak tornado passing across rural portions of Warren county.  Some minor tree damage occurred.  This tornado then proceeded into Marion county.
Episode narrative: A nearly stationary front began to move slowly northward across South Florida on April 12th, focusing deep moisture over the region. An mid to upper level low pressure over the NW Gulf of Mexico and an upper level jet stream over the eastern Gulf of Mexico contributed to providing the necessary atmospheric forcing for areas of persistent heavy rain and strong thunderstorms across most of SE Florida.

Tornado event in BROWARD County, FLORIDA
Start: 12-APR-23 14:26:00
End: 12-APR-23 14:27:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A weak tornadic debris signature (TDS) was noted on radar in a slow-moving thunderstorm in Broward County. There was minimal damage found in the area of the noted TDS in western Hollywood. A short-lived, small tornado likely only impacted the tree-top level. It was determined to be a low end EF-0 with estimated peak wind speed around 65 mph.

Tornado event in BROWARD County, FLORIDA
Start: 12-APR-23 20:40:00
End: 12-APR-23 20:44:00
Direct deaths: 0
Property damage: 50.00K
Event narrative: A small tornado began in Dania Beach on NE 6th Court just south of Ft. Lauderdale/Hollywood International Airport, causing mainly fence and tree damage to the surrounding neighborhood. The tornado skipped as the parent storm moved WNW across Federal Highway, with the next area of tornado damage noted at a church on NW 5th Avenue and 3rd Terrace where the west edge of the roof peeled and blew off to the east, and the front door facing north was blown in. Extensive tree damage was noted westward along Old Griffin Road next to the Dania Cut-Off Canal, then damaged at least half a dozen mobile homes in the Ocean Waterway community west of Bryan Road and east of I-95. The mobile home damage was in the form of peeled roofs, metal siding torn off, and damaged power poles. 

The tornado was rated on the high end of the EF-0 scale based primarily on damage in the mobile home park. A tornadic debris signature (TDS) was also noted on radar with this tornado. Damage totals are estimates.
Episode narrative: A 2-pronged threat affected north and central Georgia during the morning and evening of March 25th as a cold front pushed through and stalled over the area. The front moved through and weakened over north Georgia through the morning, producing isolated reports of damaging wind gust. By the afternoon, this front slowed and stalled across central Georgia, serving as a catalyst for additional severe thunderstorm development during the afternoon with multiple reports of large hail and damaging wind gusts.

Tornado event in LAURENS County, GEORGIA
Start: 25-MAR-23 15:17:00
End: 25-MAR-23 15:19:00
Direct deaths: 0
Event narrative: A brief tornado started in Cadwell on Academy St and lifted a porch roof off a manufactured home and destroyed a shed as well as a few trees and limbs downed. Minor, sporadic damage followed, as the tornado downed or snapped several small to medium sized trees as it moved southeast before lifting southeast of Snow Hill  Church Rd near Graham Rd.
Episode narrative: Convection percolated along a warm front across the area through the morning. By afternoon, storms re-strengthened as as daytime heating helped enhance instability. Despite good instability with MLCAPE over nearing 2000 J/kg, lapse rates were modest and speed shear was weak. Despite this, directional shear was good and when combined with instability for brief stretching, allowed for a number of weak and short-lived tornadoes to develop. While 13 tornadoes occurred, they were confined to two small areas in Iowa where storms trained, resulting in several storms over the same locations. In addition, the training storms made for pockets of heavy rain with three to four inches or more of rain. This did result in flash flooding in Pocahontas County with impacts to homes and businesses.

Tornado event in MARION County, IOWA
Start: 13-MAY-23 12:24:00
End: 13-MAY-23 12:26:00
Direct deaths: 0
Property damage: 1.00K
Event narrative: This tornado entered into Marion county from Warren county.  The tornado was captured on video by several storm chasers.  Some minor tree damage occurred with this tornado as it remained in rural Marion county.

Tornado event in SAC County, IOWA
Start: 13-MAY-23 12:36:00
End: 13-MAY-23 12:37:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Brief tornado captured on video by a storm chaser northeast of Schaller. Tornado remained in open crop field with no impacts to damage indicators, hence the EFU rating.

Tornado event in MARION County, IOWA
Start: 13-MAY-23 14:23:00
End: 13-MAY-23 14:25:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Brief tornado captured on imagery and reported by a storm chaser. Tornado did not impact any damage indicators, hence the EFU rating.
Episode narrative: A ridge of high pressure over the middle of the country provided days of dry weather, and monthly rainfall deficits exceeded two inches at Little Rock (Pulaski County). A lifting warm front that retreated back into the far northeastern part of Arkansas as a stationary front brought several, afternoon rounds of pulse severe thunderstorms with hail and damaging winds to the area, including a brief tornado.

Tornado event in JEFFERSON County, ARKANSAS
Start: 10-MAY-23 12:05:00
End: 10-MAY-23 12:05:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: An extremely brief tornado developed near the intersection of Arkansas highway 79 and 31 north of Pine Bluff, AR. Video footage showed tornado only lasting 30 seconds with swirling dirt and dust in an open field. No EF rating was attainable and there was no damage to survey.