Flood

Graphic of Texas shows the updated rainfall values in inches that define certain extreme events, such as the 100-year storm. Courtesy of NOAA

CLICK HERE - ENLARGED TEXAS MAP (1 page .PDF file)

New topographic and predictive rainfall data means more people in Harris County will be mapped in floodplains.

houstonpublicmedia.org - by Davis Land - November 26, 2018

When Hurricane Harvey left so much of Houston underwater, it highlighted a problem that’s been getting worse for years: Harris County’s existing floodplain maps just don’t work.

In the year since the historic storm, flood control officials have promised to change that, and they already had plans to redo the maps, but new data on the geography of the area and the amount of rainfall forecasters expect in the future means the new maps could look drastically different.

It’s crucial the maps are done right, as people are using the maps, meant to set flood insurance premiums, for more than they are intended . . . 

miamiherald.com - by Alex Harris - July 24, 2018

The letter might have already come in the mail. “Your building is at high risk for flooding,” it declares in bold. There are ominous charts warning that if you don’t take action, your flood insurance premium could rise up to 18 percent each year.

The bottom line: your flood insurance premium is going up again — and under a policy change the Federal Emergency Management Agency is considering, it could skyrocket even more in coming years.

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ALSO SEE RELATED ARTICLES WITHIN THE LINKS BELOW . . .

CLICK HERE - Risk Rating and Policy Forms Redesign (15 page .PDF document)

CLICK HERE - Federal Flood Insurance Average Premium to Rise 8%

CLICK HERE - FEMA - Flood Insurance Reform - Rates and Refunds

An image of Hurricane Harvey taken by the GOES-16 satellite as the storm collided with the Texas coast. (Image courtesy NASA.)

Ocean evaporation matched up with massive overland rainfall, new analysis finds

CLICK HERE - STUDY - Hurricane Harvey Links to Ocean Heat Content and Climate Change Adaptation

ucar.edu - May 10, 2018

In the weeks before Hurricane Harvey tore across the Gulf of Mexico and plowed into the Texas coast in August 2017, the Gulf's waters were warmer than any time on record, according to a new analysis led by the National Center for Atmospheric Research (NCAR).

These hotter-than-normal conditions supercharged the storm, fueling it with vast stores of moisture, the authors found. When it stalled near the Houston area, the resulting rains broke precipitation records and caused devastating flooding.

"We show, for the first time, that the volume of rain over land corresponds to the amount of water evaporated from the unusually warm ocean," said lead author Kevin Trenberth, an NCAR senior scientist. "As climate change continues to heat the oceans, we can expect more supercharged storms like Harvey."

CLICK HERE - NATIONAL HURRICANE CENTER - TROPICAL CYCLONE REPORT - HURRICANE HARVEY - 17 AUGUST - 1 SEPTEMBER 2017 (76 page .PDF report)

washingtonpost.com - by Jason Samenow - January 25, 2017

Hurricane Harvey unleashed a tropical deluge probably unsurpassed in U.S. history. The National Hurricane Center released its in-depth meteorological review of the storm Thursday and said it was unable to identify any past storm that unloaded so much rain over such a large area.

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ALSO SEE RELATED ARTICLE HERE - NHC: Harvey caused $125 billion in damage; 68 deaths in Texas

ALSO SEE: NATIONAL WEATHER SERVICE - Major Hurricane Harvey - August 25-29, 2017