Based on the number of people affected, amount of water involved, and other factors, meteorologists have warned, there may be no parallel available to any other rainstorm in U.S. history as Mashable’s Andrew Freeman reports Tropical Storm Harvey has dropped more than 11 trillion gallons of water on Texas, triggering catastrophic, unprecedented flooding in the Houston area.
The rains have broken all-time records, exceeding the rainfall totals seen during Tropical Storm Allison in 2001… and it could be about to get a lot worse as forecasters are expecting the storm to turn back and drench what is left of Houston once again midweek.
According to Ryan Maue, a meteorologist at WeatherBell, a private forecasting firm, there is still up to 16 trillion gallons more rain likely to fall in the state, based on forecasts from the National Weather Service (NWS).
The Weather Service office in Houston reported just over 2 feet of rain in 24 hours between 7 a.m. Saturday and 7 a.m. Sunday morning, causing August to become the wettest month on record there. Forecast totals call for isolated rainfall amounts of up to 50 inches before Harvey finally releases its grip on the Lone Star state late this week. If this comes to fruition, it would be the greatest rainfall totals from a tropical storm or hurricane in U.S. history.
Maue estimates that a total of around 25 trillion gallons may be the final statewide rainfall total for Harvey, which is such a unique storm due to its slow-moving nature that the NWS has nearly run out of superlatives describing it.
Drone video shows the massive extent of the flooding…
Damage from Hurricane Harvey is expected to total tens of billions of dollars, with current estimates range from $20 billion to $40 billion, but an unusually large share of victims lacking adequate protection – only one in six have insurance.
Still a named storm over 48 hours after landfall, Harvey is the longest a Texas landfalling hurricane has remained a named storm after landfall since Fern in 1971, according to Colorado State University tropical scientist Dr. Phil Klotzbach.
— Philip Klotzbach (@philklotzbach) August 27, 2017
Due to its wide geographic scope across America’s 4th-largest city, the ensuing flood disaster may rank as one of the most, if not the most, expensive natural disaster in U.S. history.
According to a tweet the NWS sent,
“this event is unprecedented & all impacts are unknown & beyond anything experienced.”
With more rain to come, and rivers still rising to expected record-shattering crests early this week, the disaster continues to unfold.
Here’s what to expect…(via Weather.com)
A tropical cyclone’s rainfall potential is a function of its forward speed, not its intensity. Therefore, several more days of torrential rain are expected in many of the already flood-ravaged areas.
- Upper Texas coast into southwest Louisiana: an additional 15 to 25 inches, bringing isolated storm totals up to 50 inches over the upper Texas coast, including the Houston/Galveston metro areas
- Farther south into the middle Texas coast, west toward the Texas Hill Country and east across south-central Louisiana: storm totals of 5 to 15 inches
The National Weather Service is forecasting major river flooding in roughly three-dozen locations in southeast Texas.
And worst of all, weather experts are forecasting a second landfall. Harvey is set to make a second landfall, maybe as a hurricane, between Galveston and Beamont/Port Arthur, WeatherBell says in emailed report.
“The path farther to the east gives this a chance to become a hurricane again, though modeling is not doing that”
— Ben Noll (@BenNollWeather) August 27, 2017
Judging by the following drone footage, it’s hard to imagine how this could get worse…
The director of the Federal Emergency Management Agency, Brock Long, predicted that the aftermath of the storm would require FEMA’s involvement for years. “This disaster’s going to be a landmark event,” Long said.
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