torre126/tornado-structure-data huggingface dataset:
Episode narrative: A very dynamic Spring storm system over the Upper Midwest states produced conditions favorable for tornadoes over northwest Alabama during the early morning hours on April 1st, and strong gradient winds throughout the day.

Tornado event in MARION County, ALABAMA
Start: 01-APR-23 01:32:00
End: 01-APR-23 01:48:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: National Weather Service meteorologists surveyed damage in northern Marion County and determined that it was consistent with an EF1 tornado, with maximum winds near 110 mph. The tornado began on Marion County Road 348 west of Alabama Highway 253 south of Hackleburg, where minor tree damage was noted. The tornado rapidly increased and caused significant damage as it crossed Alabama Highway 253, uprooting several trees and causing superficial damage to a home on the edge of the track. The tornado continued east-northeastward along Union Hill Road, crossing the road twice before the intersection with Chalk Mine Road. Damage in this segment of the path consisted solely of pockets of tree damage which varied in intensity but was easily identified as tornado damage. As the tornado paralleled Chalk Mine Road, it produced more widespread tree damage, and destroyed a manufactured home. The damage to trees surrounding the manufactured home was minimal, which contributed to a below expected value or 100 mph assigned to the flipping and tossing of the manufactured home. The tornado continued across the Fairview community causing significant tree damage just east of County Road 12, with a grove of pine trees all being sheared off about 20 feet above ground level. The tornado then continued over inaccessible areas south of County Road 6 as it headed towards the Lumbull community, crossing Alabama Highway 241 just south of Lumbull. As it approached Bear Creek, it continued to cause sparse but notable tree damage. The most significant damage along the entire path occurred along Alabama Highway 13 south of Bear Creek, where a large metal building structure received significant damage to the windward side of the building. Winds in this area approached 110 mph, bringing this tornado to a high end EF1 rating. The tornado then crossed AL Hwy 13, where an individual received major injuries as the manufactured home being occupied was flipped upside-down. The tornado continued eastward, crossing Old Union Road, then paralleling County Line Church Road until the tornado passed into Winston County just north of Sherwood Place Drive.
Episode narrative: A cluster of thunderstorms that initiated during the night of June 28th across the Central Plains entered west-central Illinois by the late morning of June 29th.  Aided by an increasingly unstable airmass characterized by CAPE values of 3000-4000J/kg and a 30-40kt mid-level jet streak, the storms became linear in nature and began racing east-southeastward across central Illinois.  Widespread wind gusts of 60-80mph were observed along the line, with localized corridors of even higher gusts.  The highest measured gust of 101 mph came from a personal weather station near Taylorville that took a direct hit from a tornado.  A total of seven tornadoes were embedded within the line of storms, including an EF-2 tornado near Curran in Sangamon County.  The high winds caused extensive tree and power line damage, leading to power loss for over 200,000 customers.  Some people in the Springfield area were without power for nearly a week before all lines were restored. The winds impacted all of central and southeast Illinois, but were most concentrated between the I-74 and I-70 corridors.  Once the line of storms dropped into the Ohio River Valley, additional severe cells fired along the trailing outflow boundary south of I-70 during the late afternoon.  These storms produced hail as large as 2 inches in diameter across parts of Clay, Richland, and Lawrence counties.

Tornado event in LOGAN County, ILLINOIS
Start: 29-JUN-23 11:26:00
End: 29-JUN-23 11:30:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado touched down in the southern part of Kickapoo Creek Park on the northwest side of Lincoln at 12:26 PM CDT.  It damaged several trees in the park before tracking northeastward across the Eaton Corporation property and open fields before downing large electrical poles near I-55 exit 133.  The interstate was closed in both directions for several hours while the poles were being repaired.  The tornado dissipated about 2 miles south-southwest of Lawndale at 12:30 PM CDT.
Episode narrative: The continuations of hail, wind, and tornadoes continues through mid-July as northwesterly upper level flow develops once again over southern Colorado. Anomalous amounts of low level moisture remain over the region due to record breaking precipitation in June and an active early July. Enhanced wind shear due from the upper level northwesterly flow created an environment conducive to severe thunderstorms.

Tornado event in BACA County, COLORADO
Start: 13-JUL-23 18:44:00
End: 13-JUL-23 18:45:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Brief touchdown - lasted 20 seconds.
Episode narrative: Two tornadoes down briefly in Elbert and Park counties in the morning, but no damage was observed. Later in the afternoon,  another tornado entered Park County and uprooted several softwood trees.  One shed was destroyed in Park County on Apache Rd.   In Larimer County, a strong thunderstorm produced hail up to nickel size.

Tornado event in PARK County, COLORADO
Start: 30-JUN-23 16:40:00
End: 30-JUN-23 16:49:00
Direct deaths: 0
Event narrative: A tornado touched down and uprooted several softwood trees.  Minor damage was also observed at a residence.
Episode narrative: A supercell thunderstorm formed in the higher terrain west of Denver and moved across the Arapahoe/Douglas County line, from the west metro Denver to south Metro Denver. Up to 2.5 inches hail occurred in the populated areas of Jefferson County. An EF1 tornado touched down just south of CO-470 in the city of Highlands Ranch. Preliminarily the tornado was on the ground for 6.3 miles.  No injuries were reported but over 100 trees were downed. Some window/shingle damage has been noted to both houses and commercial properties.  South Metro Fire Dapartment responded to dozens of calls in Highlands Ranch south of c470 between Lucent and Quebec for storm related damage including roof damage, trees down, natural gas leaks and electrical problems.  At Northridge Elementary School a tree had fallen on the school and portions of the roof were been ripped off. Valor Christian High School in Highlands Ranch also sustained damage.

Tornado event in DOUGLAS County, COLORADO
Start: 22-JUN-23 14:24:00
End: 22-JUN-23 14:48:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado touched down just south of CO-470 in Douglas County, west of Lucent Blvd, impacting the city of Highlands Ranch. The tornado lifted just  west of the intersection of Lincoln Ave and Lone Tree Parkway. Most all of the damage was rated  EF-0, with small pockets of EF1 damage as well which involved a well built single family home.
Episode narrative: A line of severe storms moved east across Mississippi during the evening of February 8th, with damaging wind gusts and tornadoes with storms along and in advance of the main squall line. Isolated flash flooding also occurred.

Tornado event in SIMPSON County, MISSISSIPPI
Start: 08-FEB-23 20:06:00
End: 08-FEB-23 20:14:00
Direct deaths: 0
Property damage: 40.00K
Event narrative: This tornado began near Mississippi Highway 540 just east of Sanders Creek where it downed a few trees. It continued northward across Old Pinola Braxton Rd, Gum Springs Rd, Sawmill Rd, and MS Highway 149. It weakened as it crossed US Highway 49 and lifted near Dobbs Creek. Metal and wooden sheds were damaged near the intersection of MS 149 and Sawmill Rd, and a home had shingle damage. Otherwise, tree damage occurred along the path, but was most concentrated where the tornado crossed MS Highway 149. A TDS was observed on radar with this tornado. The peak estimated wind speeds were 90 mph.
Episode narrative: A cluster of thunderstorms that initiated during the night of June 28th across the Central Plains entered west-central Illinois by the late morning of June 29th.  Aided by an increasingly unstable airmass characterized by CAPE values of 3000-4000J/kg and a 30-40kt mid-level jet streak, the storms became linear in nature and began racing east-southeastward across central Illinois.  Widespread wind gusts of 60-80mph were observed along the line, with localized corridors of even higher gusts.  The highest measured gust of 101 mph came from a personal weather station near Taylorville that took a direct hit from a tornado.  A total of seven tornadoes were embedded within the line of storms, including an EF-2 tornado near Curran in Sangamon County.  The high winds caused extensive tree and power line damage, leading to power loss for over 200,000 customers.  Some people in the Springfield area were without power for nearly a week before all lines were restored. The winds impacted all of central and southeast Illinois, but were most concentrated between the I-74 and I-70 corridors.  Once the line of storms dropped into the Ohio River Valley, additional severe cells fired along the trailing outflow boundary south of I-70 during the late afternoon.  These storms produced hail as large as 2 inches in diameter across parts of Clay, Richland, and Lawrence counties.

Tornado event in CHRISTIAN County, ILLINOIS
Start: 29-JUN-23 11:27:00
End: 29-JUN-23 11:28:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: Sentinel-2 satellite imagery showed that a tornado touched down 6.2 miles northwest of Palmer about a half mile north of the intersection of North 200 East Road and East 1100 North Road at 12:27 PM CDT.  The tornado tracked east-southeastward through farm fields before dissipating before reaching North 300 East Road at 12:28 PM CDT.  Damage appeared limited to crops, thus no intensity could be assigned.
Episode narrative: Hurricane Idalia made landfall Wednesday morning August 30th around 745 AM EDT along the Florida Big Bend near Keaton Beach as a category 3, with the inner core moving NE across the Suwannee River Valley. The inner wind core of Idalia gradually weakened through the morning while, heavily impacting Suwannee and Hamilton counties in NE Florida and Echols county SE Georgia as the circulation tracked NE. Widespread tree, power line and structure damage occurred across Suwannee and Hamilton counties, with estimated winds of 80-100 mph based on damage surveys with isolated pockets of peak wind gusts near major hurricane strength. Outer rainbands on the eastside of Idalia impacted all of SE Georgia and NE FL through the day, with early morning tornadoes across coastal SE Georgia and widespread tropical cyclone wind gusts through the day causing tree damage and power line damage at least somewhere across NE Florida and SE Georgia. Measured gusts during the peak of the hurricane acorss the local forecast area were 60-80 mph. Flooding rainfall impacted locations in the direct path of the weakening inner core across the Suwannee River Valley and southeast Georgia, especially from eastern Hamilton county toward Baxley and Jesup GA. The peak rainfall amounts were up to 5-8 inches. At least 3 tornadoes occurred in southeast GA as rainbands swept northwestward ahead of the hurricane.

Tornado event in GLYNN County, GEORGIA
Start: 30-AUG-23 06:30:00
End: 30-AUG-23 06:39:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: NWS Survey team found evidence of a weak tornado yesterday in southern Glynn  county. This tornado was spawned by outer rain bands from Hurricane Idalia.  This particular tornado began just south of Highway 17 and crossed the highway  around Fancy Bluff with mostly tree damage and downed powerlines, traversing  the area from southeast to northwest. It then crossed through Emanuel  Church Road with tree limbs downed, then shifted a bit more west-northwest  toward Georgetown and near Bladen where large tree branches were downed.  The tree damage supports damage rating of an EF-0 rating with maximum winds  near 70 mph.
Episode narrative: Southerly upper level winds moved across Nebraska and brought in a thick layer of low-level stratus clouds during the early morning hours. These clouds limited surface heating during the day; however, cooler air aloft moved over the area during midday. These conditions resulted in more instability. This instability combined with a low-pressure system, forcing from a strong 500 mb jet, and strong low-level wind shear. There was locally enhanced 0 ï¿½ï¿½ï¿½ 1 km helicity near a surface low. There was an intersection of a surface warm front with a dryline and cold front near the center of the surface low. The cold front moved across the area during the overnight hours. These conditions resulted in severe weather during the afternoon hours. 

Thunderstorms were present across Nebraska during the early afternoon hours and moved northeastward. These storms began in south central Nebraska by producing a tornado in Phelps County at 1:05 PM CDT. This tornado was rated as an EF-0 and did some damage. These storms moved eastward and developed into line segments and went on to produce 5 more tornadoes. The additional tornadoes were in Dawson, Franklin, Kearney, Adams, and Hall Counties. The tornadoes in Franklin and Kearney Counties were rated EF-1 while the others were rated EF-0. These storms also produced hail and severe wind gusts. The biggest hail was half dollar size in Phelps County. There was a 63 mph wind gust in Adams County. The storms ended by producing nickel sized hail in Hamilton County at 5:05 PM CDT.

Tornado event in HALL County, NEBRASKA
Start: 12-OCT-23 16:04:00
End: 12-OCT-23 16:04:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: This rope-like tornado was reported by the public to the NWS via a picture from a storm chaser in the area. No rating nor wind speed was assigned due to the lack of quality damage indicators in the area. The location is estimated.
Episode narrative: Long duration severe weather event across the northeast plains, and most of the Denver metropolitan area beginning during the early afternoon hours.   Scores of  tornadoes occurred across Washington and Logan counties.  Several rounds of hail across the Denver metro, with ping pong ball sized hail in downtown, larger hail up to 2 inches in diameter at concert in Red Rocks Amphitheatre.  In all, seven patrons were hospitalized,  with 83 treated on scene.   A substantial number of attendees suffered welts, bruises and broken fingers trying to protect themselves.  Several suffered concussions as well.  A total of 33 tornadoes touched down in Washington County, with 3 reported in Logan County.  There were reports of at least one home damaged west of Sterling and one commercial building collapse in Sterling. The home was damaged by one of the tornadoes.

Significant flooding and flash flooding also occurred in portions of the plains, including Elbert, Arapahoe, Adams, Logan, Washington and Morgan counties. There were likely several rural roads that flooded due to the heavy rainfall.  There was a flood fatality just south of I-70 along Watkins Rd.  First responders found two stranded cars swept into a field, but its occupants had either gotten out or had been rescued. The third vehicle ended up west of Watkins and 6th Ave. in what is normally a dry creek bed. South Metroï¿½ï¿½ï¿½s water rescue team was then called out to do a water rescue but that operation turned into a recovery by the following morning.  Due to flooding, Watkins Road was closed between Interstate 70 and Jewell Ave.  Interstate 70 was also closed for several hours until water could recede from flooded underpasses. Minor flooding also occurred in portions of the Denver and the surrounding metro area.  Baseball size hail was observed in Washington County.  In Clear Creek County, a thunderstorm wind gusts to 68 mph was recorded.

Tornado event in WASHINGTON County, COLORADO
Start: 21-JUN-23 15:49:00
End: 21-JUN-23 15:50:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado touched down briefly in open country. No damage was observed.
Episode narrative: A stalled front over northern portions of the area combined with favorable wind shear and instability led to the development of severe thunderstorms. Two tornadoes developed along with several reports of large hail.

Tornado event in WILCOX County, ALABAMA
Start: 26-MAR-23 19:27:00
End: 26-MAR-23 19:30:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A unique scenario unfolded between Highway 265 South and Highway 10 East on 3/27/2023. A rapid succession of tornadoes occurred from the same supercell producing three separate tornadoes discernible on high resolution Worldview satellite imagery. This first tornado occurred just southeast of a small lake/pond in between several dirt roads. The tornado began by moving due north on the right side of the lake and dirt road, expanding rapidly to about 500 yards in width and uprooting/snapping many softwood and hardwood trees. It was here that it reached its peak intensity around 110mph as an EF1. The tornado starts moving northeast after this point, quickly beginning an occlusion to the north and northwest which is clearly evident with a narrow convergent path of tree uproots visible on high resolution Worldview satellite imagery. The tornado reached its peak intensity by the small lake with winds around 110mph.
Episode narrative: A thunderstorm produced a brief tornado southeast of Lemmon. No damage was reported.

Tornado event in PERKINS County, SOUTH DAKOTA
Start: 21-JUN-23 18:19:00
End: 21-JUN-23 18:21:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: A tornado briefly developed southeast of Lemmon. No damage was reported.
Episode narrative: Southerly upper level winds moved across Nebraska and brought in a thick layer of low-level stratus clouds during the early morning hours. These clouds limited surface heating during the day; however, cooler air aloft moved over the area during midday. These conditions resulted in more instability. This instability combined with a low-pressure system, forcing from a strong 500 mb jet, and strong low-level wind shear. There was locally enhanced 0 ï¿½ï¿½ï¿½ 1 km helicity near a surface low. There was an intersection of a surface warm front with a dryline and cold front near the center of the surface low. The cold front moved across the area during the overnight hours. These conditions resulted in severe weather during the afternoon hours. 

Thunderstorms were present across Nebraska during the early afternoon hours and moved northeastward. These storms began in south central Nebraska by producing a tornado in Phelps County at 1:05 PM CDT. This tornado was rated as an EF-0 and did some damage. These storms moved eastward and developed into line segments and went on to produce 5 more tornadoes. The additional tornadoes were in Dawson, Franklin, Kearney, Adams, and Hall Counties. The tornadoes in Franklin and Kearney Counties were rated EF-1 while the others were rated EF-0. These storms also produced hail and severe wind gusts. The biggest hail was half dollar size in Phelps County. There was a 63 mph wind gust in Adams County. The storms ended by producing nickel sized hail in Hamilton County at 5:05 PM CDT.

Tornado event in DAWSON County, NEBRASKA
Start: 12-OCT-23 13:20:00
End: 12-OCT-23 13:20:00
Direct deaths: 0
Property damage: 0.00K
Event narrative: This tornado was reported by the public to the NWS via pictures and video. No rating nor wind speed was assigned due to the lack of quality damage indicators in the area. The location is estimated.
Episode narrative: A deep upper trough moved over the Central Plains. A shortwave moved over east central Colorado during the afternoon and CAPE values were highest just to the east of this feature. Low-level moisture was limited and instability was marginal across south central and central Nebraska but high enough for storms to produce severe updrafts.  Wind shear values were around 40 to 50 knots, and a cold front was moving toward the area. Low-level storm relative helicity was increasing which lead to a greater tornado threat. 

Thunderstorms developed during the afternoon ahead of the shortwave and became severe across portions of western Kansas and portions of southern Nebraska. These storms continued to develop and move eastward as the afternoon progressed. The storms began by producing nickel sized hail in Furnas County around 3 pm CDT. The hail got up to the size of golf balls in Dawson, Harlan, Phelps, and Adams Counties. A few of the storms produced tornadoes in Dawson and Sherman Counties. These tornadoes resulted in some damage and were rated EF-0. These storms eventually developed into a line as they moved across portions of Nebraska and Kansas. Aside from an estimated 70 mph wind causing some damage a farmstead near Marquette in Hamilton county, the strongest wind gust reported from the line of storms was 86 mph in Polk County. This wind gust along with other wind gusts resulted in wind damage across portions of south central and central Nebraska. The last severe report of the day was just before 7 pm CDT in Polk County with a wind gust near 60 mph.

Tornado event in SHERMAN County, NEBRASKA
Start: 03-OCT-23 15:46:00
End: 03-OCT-23 15:47:00
Direct deaths: 0
Property damage: 15.00K
Event narrative: A brief tornado occurred east of Hazard. Damage at a farmstead included damage to gutters and fascia on the west side of the home, and significant damage to a large tree on the property. Leaves and debris were smattered on the east side of the house. Minor tree occurred as the tornado moved east, but the tornado apparently quickly lifted in a nearby field.