Tropical Storm Allison (1989)
Atlantic tropical storm in 1989 / From Wikipedia, the free encyclopedia
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Tropical Storm Allison was a tropical cyclone that produced severe flooding in the southern United States. The second tropical cyclone and the first named storm of the 1989 Atlantic hurricane season, Allison formed on June 24 in the northwestern Gulf of Mexico. Development of Allison was a result of the interaction of a tropical wave and the remnants of Pacific hurricane Hurricane Cosme. It moved south and became a tropical storm on June 26. By June 27, Allison made landfall near Freeport, Texas. Allison quickly weakened to a tropical depression later that day, and transitioned into an extratropical cyclone on the following day. However, the storm's remnants persisted for another 10 days and meandered across the area, triggering flooding across the region, before dissipating on July 7.
Meteorological history | |
---|---|
Formed | June 24, 1989 |
Remnant low | June 27 |
Dissipated | July 7, 1989 |
Tropical storm | |
1-minute sustained (SSHWS/NWS) | |
Highest winds | 50 mph (85 km/h) |
Lowest pressure | 999 mbar (hPa); 29.50 inHg |
Overall effects | |
Fatalities | 11 direct |
Damage | $560 million (1989 USD) |
Areas affected | East Texas, Louisiana |
IBTrACS | |
Part of the 1989 Atlantic hurricane season |
The storm caused heavy rainfall, amounting to 30 in (760 mm) in some places. In total, 11 fatalities resulted from the storm, as well as $560 million (1989 USD, $1.38 billion 2024 USD) in damage.