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2012 Hurricane Isaac tornado outbreak

Weather event in the United States

Weather event in the United States

FieldValue
name2012 Hurricane Isaac tornado outbreak
imageIsaac 2012-08-31 1655Z.jpg
captionThe remnant low of Isaac moving into the Midwestern United States on August 31
typeTornado outbreak
activeAugust 27–September 4, 2012
tornadoes32
fujitascaleEF2
tornado duration8 days, 15 hours, 22 minutes
hail
total fatalities0 fatalities, 4 injuries
damages$6.38 million (2012 USD)
affectedCentral United States, Eastern United States
enhancedyes
partoftornadoes outbreaks of 2012, Hurricane Isaac (2012), and the 2012 Atlantic hurricane season

The passage of Hurricane Isaac generated a long-lived, nine-day tornado outbreak that affected the Central and Eastern United States from August 27 to September 4, 2012. The hurricane produced a total of 34 tornadoes, with the strongest being two EF2 tornadoes in Mississippi and Arkansas. There were 19 tornado watches were issued for Isaac over eight days and 171 tornado warnings were issued across 12 states, with 77 of them in Mississippi.

Event summary

A tropical wave emerged off the western coast of Africa into the Atlantic Ocean on August 16. After acquiring a well-defined center of circulation and deep atmospheric convection, the disturbance was deemed organized enough to be declared a tropical depression by 06:00 UTC on August 21 while located about 720 mi east of the Lesser Antilles. Twelve hours later, the depression intensified into Tropical Storm Isaac. Steered swiftly westward across the eastern Caribbean Sea by a subtropical ridge, the cyclone steadily intensified prior to making landfall near Jacmel, Haiti with winds of 65 mph by 06:00 UTC on August 25; a few hours later, Isaac moved ashore near Cajobabo, Guantánamo, Cuba with winds of 60 mph. After moving through the Straits of Florida and into the eastern Gulf of Mexico, the system initially struggled to organize as its wind field expanded. By 12:00 UTC on August 28, however, data from an aircraft reconnaissance flight supported designating Isaac as a Category 1 hurricane. The cyclone attained peak winds of 80 mph prior to making two landfalls, one at the Southwest Pass over the Mississippi River and the second near Port Fourchon, Louisiana. Once inland, Isaac steadily weakened and dissipated over Missouri early on September 1.

On August 22, the Storm Prediction Center noted the potential for severe weather to evolve in association with Isaac; however, considerable model uncertainty precluded the addition of a threat area. Three days later, a severe threat area was outlined across southern Georgia, southeastern Alabama, and northern Florida as the outer bands of the hurricane were forecast to rotate into the region.

Confirmed tornadoes

August 27 event

EF#LocationCounty / ParishStateCoord.Time (UTC)Path lengthMax widthDamageSummary
storm}} align="center"EF0S of NarcoosseeOsceolaFL0709 – 07100.83 mi30 yd$An abandoned mobile home was destroyed and shingles were removed from a mobile home. Another home had a broken window and shrub and fence damage on the property. The tornado also passed through citrus groves, knocking down several trees.
storm}} align="center"EF0W of Vero BeachIndian RiverFL1603 – 16051.61 mi180 yd$A weak tornado on a discontinuous path caused damage to 95 structures, most of which were mobile homes. Approximately 62 received minor damage with an additional 33 sustaining major damage. Carports and awnings were damaged as well.
storm}} align="center"EF0ESE of TampaHillsboroughFL2044 – 20450.04 mi20 yd$A waterspout moved ashore and damaged fences, trees, and roofs at six residences.

August 29 event

EF#LocationCounty / ParishStateCoord.Time (UTC)Path lengthMax widthDamageSummary
storm}} align="center"EF0NE of GreenwoodJacksonFL2212 – 22140.37 mi25 yd$Brief tornado in an open area as documented on video; no damage.
cat1}} align="center"EF1SSW of GulfportHarrisonMS2218 – 22210.5 mi25 yd$A tornado destroyed a home that was under construction and collapsed the roof of a front porch to a separate house. Several trees were downed.
storm}} align="center"EF0N of GracevilleHolmesFL2224 – 22250.27 mi25 yd$The front porch was torn away from a mobile home and numerous trees were downed.
cat1}} align="center"EF1S of Ocean SpringsJacksonMS0014 – 00160.43 mi40 yd$Several roofs were damaged and windows were blown out. A few trees were downed as well.

August 30 event

EF#LocationCounty / ParishStateCoord.Time (UTC)Path lengthMax widthDamageSummary
cat1}} align="center"EF1N of LoweryGeneva, CoffeeAL0744 – 07482.97 mi35 yd$Several large trees were knocked down and the roof was torn from a mobile home. Several sheds and a barn were damaged.
cat2}} align="center"EF2SW of PascagoulaJacksonMS1210 – 12120.77 mi40 yd$Impact to homes was largely confined to minor structural damage, with the exception of one home that lost the entirety of its roof. Trees were downed.
cat1}} align="center"EF1WSW of CreekClarkeMS1449 – 14566.1 mi100 yd$Several structures were either damaged or destroyed, including numerous outbuildings and two mobile homes. Light poles, trees, and a fence were downed as well.
cat1}} align="center"EF1E of IncreaseLauderdaleMS1518 – 15211.4 mi100 yd$Two barns were damaged, two sheds were blown into a pond, and a tree fell on another shed. Numerous trees were snapped or uprooted.
storm}} align="center"EF0E of ToxeyChoctawAL1558 – 16000.01 mi50 yd$A few trees were downed.

August 31 event

EF#LocationCountyStateCoord.Time (UTC)Path lengthMax widthDamageSummary
storm}} align="center"EF0ENE of FieldonJerseyIL1936 – 19370.18 mi40 ydUnknownMinor damage was inflicted to crops and a residence. Trees surrounding the house were snapped off.
storm}} align="center"EF0NW of Saint ThomasMadisonIL1950 – 19510.2 mi50 yd$A brief tornado touchdown; no reported damage.
storm}} align="center"EF0Carrollton areaGreeneIL2027 – 20301.44 mi60 ydUnknownA garage and a storage shed sustained major damage. A home sustained minor roof damage and many trees and power poles were downed.
cat1}} align="center"EF1Franklin areaMorganIL2027 – 20300.25 mi75 yd$A brief tornado destroyed a repair shop, damaged the roof of a house, and rolled a mobile home off its foundation. Several trees were downed.
storm}} align="center"EF0NW of FranklinMorganIL2232 – 22330.16 mi10 yd$A brief tornado touchdown in an open field; no reported damage.
storm}} align="center"EF0NNE of O'FallonSt. CharlesMO2234 – 22350.4 mi120 ydUnknownA tornado struck Fort Zumwalt North High School where it downed several trees, blew debris onto the tennis court, broke the window out of a nearby truck, knocked over a set of standalone aluminum bleachers at the football field, and blew soccer goals against a line of trees. It then left the high school property and knocked down several more trees, blew playground equipment from a preschool into a parking lot, and knocked over a small set of bleachers and a portion of a 4-foot high chain-link fence that surrounded a nearby baseball diamond.

September 1 event

EF#LocationCountyStateCoord.Time (UTC)Path lengthMax widthDamageSummary
storm}} align="center"EF0ESE of BensonWoodfordIL1648 – 16490.06 mi20 yd$A brief tornado touchdown in an open field; no reported damage.
storm}} align="center"EF0N of BensonWoodfordIL1703 – 17040.69 mi20 yd$A brief tornado touchdown in an open field; no reported damage.
storm}} align="center"EF0NNW of BensonWoodford, MarshallIL1705 – 17092.25 mi75 yd$The tornado pulled the tin roof from a shed and damaged a corn field.
storm}} align="center"EF0S of SparlandMarshallIL1732 – 17330.09 mi20 yd$A brief tornado touchdown; no reported damage.
storm}} align="center"EF0ESE of WyomingStarkIL1808 – 18111.3 mi50 yd$A brief tornado touchdown in an open field; no reported damage.
storm}} align="center"EF0SE of CastletonStarkIL1811 – 18141.1 mi20 yd$A brief tornado touchdown; no reported damage.
storm}} align="center"EF0W of ModenaStarkIL1824 – 18260.94 mi50 yd$A brief tornado touchdown in an open field; no reported damage.
cat2}} align="center"EF2N of CorningClayAR2119 – 21210.9 mi75 yd$Two hangars at Corning Municipal Airport sustained extensive damage and a few others sustained minor damage. Several aircraft were damaged severely and several power poles were downed. Two homes had windows blown out and the roof of a shed was blown off.
storm}} align="center"EF0N of CorningClayAR2122 – 21230.06 mi25 yd$A brief tornado touchdown in a farm field.
storm}} align="center"EF0NW of FiskButlerMO2132 – 21392.95 mi20 yd$A well-documented tornado stayed over open farm country and produced no known damage.
storm}} align="center"EF0E of QulinButlerMO2143 – 21484.29 mi20 yd$The tornado remained over open farm country; no reported damage.
storm}} align="center"EF0SSE of BucodaButlerMO2303 – 23040.03 mi25 yd$A farm shed and the equipment inside was damaged by the tornado.
storm}} align="center"EF0NNE of FlackvilleMarionIN2241 – 22420.01 mi25 yd$A downtown tower media camera observed a brief tornado; no reported damage.

September 3 event

EF#LocationCountyStateCoord.Time (UTC)Path lengthMax widthDamageSummary
storm}} align="center"EF0S of WyomingKentDE1920 – 19210.21 mi35 yd$Several houses were damaged, the roof was torn off of a garage, and two vehicles were damaged.

September 4 event

EF#LocationCountyStateCoord.Time (UTC)Path lengthMax widthDamageSummary
storm}} align="center"EF0Mount Ephraim areaCamdenNJ2231 – 22320.16 mi25 yd$Several homes suffered roof damage, mostly from falling trees. One tree severely damaged a sidewalk.

Footnotes

References

References

  1. [https://www.ncdc.noaa.gov/stormevents/listevents.jsp?eventType=%28C%29+Tornado&beginDate_mm=08&beginDate_dd=27&beginDate_yyyy=2012&endDate_mm=09&endDate_dd=02&endDate_yyyy=2012&hailfilter=0.00&tornfilter=0&windfilter=000&sort=DT&submitbutton=Search&statefips=-999%2CALL Tornado Reports: August 27-September 2, 2012], ''[[National Centers for Environmental Information]]''
  2. Ian Livingston. (September 4, 2012). "Hurricane Isaac's tornado production from late August through early September 2012". USTornadoes.com.
  3. Robbie J. Berg. (January 28, 2013). ["Tropical Cyclone Report: Hurricane Isaac"]({{NHC TCR url). National Oceanic and Atmospheric Administration.
  4. Jeremy Grams. (August 22, 2012). "Day 4-8 Severe Weather Outlook Issued on Aug 22, 2012". National Oceanic and Atmospheric Administration.
  5. Jared Guyer. (August 25, 2012). "Day 4-8 Severe Weather Outlook Issued on Aug 23, 2012". National Oceanic and Atmospheric Administration.
  6. National Weather Service Weather Forecast Office in Melbourne, Florida. (2012). "Florida Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  7. National Weather Service Weather Forecast Office in Melbourne, Florida. (2012). "Florida Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  8. National Weather Service Weather Forecast Office in Tampa, Florida. (2012). "Florida Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  9. National Weather Service Weather Forecast Office in Tallahassee, Florida. (2012). "Florida Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  10. National Weather Service Weather Forecast Office in New Orleans, Louisiana. (2012). "Mississippi Event Report: EF1 Tornado". National Oceanic and Atmospheric Administration.
  11. National Weather Service Weather Forecast Office in Tallahassee, Florida. (2012). "Florida Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  12. National Weather Service Weather Forecast Office in New Orleans, Mississippi. (2012). "Mississippi Event Report: EF1 Tornado". National Oceanic and Atmospheric Administration.
  13. National Weather Service Weather Forecast Office in Tallahassee, Florida. (2012). "Alabama Event Report: EF1 Tornado". National Oceanic and Atmospheric Administration.
  14. National Weather Service Weather Forecast Office in Tallahassee, Florida. (2012). "Alabama Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  15. National Weather Service Weather Forecast Office in New Orleans, Louisiana. (2012). "Mississippi Event Report: EF2 Tornado". National Oceanic and Atmospheric Administration.
  16. National Weather Service Weather Forecast Office in Jackson, Mississippi. (2012). "Mississippi Event Report: EF1 Tornado". National Oceanic and Atmospheric Administration.
  17. National Weather Service Weather Forecast Office in Jackson, Mississippi. (2012). "Mississippi Event Report: EF1 Tornado". National Oceanic and Atmospheric Administration.
  18. National Weather Service Weather Forecast Office in Mobile, Alabama. (2012). "Alabama Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  19. National Weather Service Weather Forecast Office in St. Louis, Missouri. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  20. National Weather Service Weather Forecast Office in St. Louis, Missouri. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  21. National Weather Service Weather Forecast Office in St. Louis, Missouri. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  22. National Weather Service Weather Forecast Office in Central Illinois. (2012). "Illinois Event Report: EF1 Tornado". National Oceanic and Atmospheric Administration.
  23. National Weather Service Weather Forecast Office in Central Illinois. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  24. National Weather Service Weather Forecast Office in St. Louis, Missouri. (2012). "Missouri Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  25. National Weather Service Weather Forecast Office in Central Illinois. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  26. National Weather Service Weather Forecast Office in Central Illinois. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  27. National Weather Service Weather Forecast Office in Central Illinois. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  28. National Weather Service Weather Forecast Office in Central Illinois. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  29. National Weather Service Weather Forecast Office in Central Illinois. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  30. National Weather Service Weather Forecast Office in Central Illinois. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  31. National Weather Service Weather Forecast Office in Central Illinois. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  32. National Weather Service Weather Forecast Office in Central Illinois. (2012). "Illinois Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  33. National Weather Service Weather Forecast Office in Memphis, Tennessee. (2012). "Arkansas Event Report: EF2 Tornado". National Oceanic and Atmospheric Administration.
  34. National Weather Service Weather Forecast Office in Memphis, Tennessee. (2012). "Arkansas Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  35. National Weather Service Weather Forecast Office in Paducah, Kentucky. (2012). "Missouri Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  36. National Weather Service Weather Forecast Office in Paducah, Kentucky. (2012). "Missouri Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  37. National Weather Service Weather Forecast Office in Paducah, Kentucky. (2012). "Missouri Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  38. National Weather Service Weather Forecast Office in Indianapolis, Indiana. (2012). "Indiana Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  39. National Weather Service Weather Forecast Office in Mount Holly, New Jersey. (2012). "Delaware Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
  40. National Weather Service Weather Forecast Office in Mount Holly, New Jersey. (2012). "Delaware Event Report: EF0 Tornado". National Oceanic and Atmospheric Administration.
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