April 25-28, 2011 Tornado outbreack
Starting on April 19, the Hydrometeorological Prediction Center began to discuss this storm system, and the possibility of an outbreak of strong thunderstorms. A large area of possible severe storms for April 25–27 was forecast as the Storm Prodiction Center, a division of the National Weather Service, issued a moderate risk of severe weather for three consecutive days, centered over Arkansas through Tennessee.
April 25, 2011
By the late-afternoon hours of April 25, several tornadoes had been reported across a few states, including two which caused significant damage in Oklahoma and Texas. The Storm Protiction Center issued a particularly dengerous situation tornado watch for much of Arkansas and parts of Missouri, Oklahoma, Texas and Louisiana. Tornadoes were scattered that day until early evening, when an intense tornadic cell tracked near the Little Rock metropolitan area and a tornado emergency was declared for Vilonia, Arkensas. Tge tornado caused significant damage in the town. Reports says four people were killed. A strong EF3 tornado struck Hot Springs Village that evening as well, causing severe damage and 1 death. Another tornado caused extensive damage to Little Rock Air Force Base. Severe flooding continued across a large area from the Red River valley to the Great Lakers.
April 26, 2011
A high risk of severe weather was issued for April 26 for portions of Louisiana, Arkansas, Oklahoma and Texas. A large particularly dangerous situation tornado watch with very high tornado probabilities was issued that afternoon for that same area. Widespread tornado warnings were issued in that area later that evening, and tornadoes caused damage.
Tornado watches were also issued for the Lower Great Lakes in the afternoon, and supercells began to track across southern Michigan in the early evening. Several counties in Michigan were placed under tornado warnings, including Kent, Montcalm, Ionia, Kalamazoo, Cahoun, Barry, Eaton, Midland and Bay counties. A tornado was later confirmed in Allegan County. A possible funnel was spotted in Kalamazoo County, and seven people were injured by a lightning strike in Portage. Further east, severe thunderstorms caused scattered wind damage and large hail across Pennsylvania and New York. Two-inch-diameter hail was reported in Lock Haven, Pennsylvania. An isolated supercell moved across Central New York throughout much of the afternoon, producing golf ball-sized hail in Syracuse, and spawned a very brief EF1 tornado in Verona Mills, causing primarily tree damage.
April 27, 2011
For the second day in a row, it was a high risk of severe weather for the Southern United States, and late that morning the Storm Predicting Center increased the probability for tornadoes to 45% around Meridian, Mississippi to Huntsville, Alabama. During the afternoon, a tornado emergency was declared for Neshoba County, Mississippi as a large tornado was reported on the ground by storm spotters. This powerful EF5 tornado caused incredible damage near Philadelphia, Mississippi where homes were swept away, vehicles were thrown, and the ground was scoured out to a depth of 2 feet by the tornado. 3 people died in this tornado when a mobile home was picked up, thrown into a wooded area. A widespread complex of supercell storms overspread the states of Mississippi and Alabama and violent tornadoes began rapidly touching down as the evening progressed. Four tornadoes were officially rated as EF5 that day. These tornadoes impacted several counties in the states of Mississippi and Alabama, especially the towns of Smithville, Mississippi; Hackleburg and Phil Campbell, Alabama; Philadelphia, Mississippi; and Rainsville, Alabama. This marks only the second day in history (the other being the April 3, 1974 Super Outbreak) that there were three or more EF5 or F5 tornadoes.
A separate complex of storms occurred earlier that morning and caused communication and warning problems due to power outages, so people didn't get any warning of approaching tornadoes later that day. A squall line of severe thunderstorms packing strong straight-line winds and numerous embedded tornadoes impacted North and Central Alabama and parts of Middle and East Tennessee in the early morning hours. These storms knocked out power and telephone lines in a few areas, these outages would become much more widespread as the day continued.
The SPC shows 260 tornadoes were reported in the preceding 24 hours. It also broke the record for most tornadoes in 24 hours with 188 (53 of which were in Alabama), breaking the record of 148 set by the 1974 Super Outbreak.
April 28, 2011
Tornado watches were issued for the Atlantic Seaboard from Pennsylvania to Florida, but tornadoes were predicted to weaken and become more isolated. Even so, several people were killed across the region and tornadoes were reported in Pennsylvania, New York, Virginia, North Carolina, South Carolina, Georgia, Florida and Maryland. In the wake of the tornadoes and severe thunderstorms, widespread flooding hit the Midwest, South, and Eastern Seaboard, with extensive flood and flash flood warnings issued. The last tornadoes of the outbreak touched down that afternoon in eastern North Carolina, but they were all weak.
Confirmed tornadoes
From: Wikipedia
Confirmed tornadoes
| Confirmed Total | Confirmed EF0 | Confirmed EF1 | Confirmed EF2 | Confirmed EF3 | Confirmed EF4 | Confirmed EF5 |
| 336 | 119 | 146 | 50 | 23 | 11 | 4 |
From: Wikipedia
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