Hurricane Florence September 2018

9-18-2018: We've updated our inland flood footprint based on observed precipitation. There is still uncertainty regarding potential flooding on the Cape Fear River, in particular in the Fayetteville area, as the river has not yet crested.  We have included our best estimate of potential flooding at this time but may update the footprint later this week.

9-16-2018: We've created updated wind, surge and inland flood footprints. The inland flood footprint is based on a combination of observations and forecasts. Inland flood will be updated later this week. Please contact us if you are interested in the data and associated loss analytics.

9-14-2018: We've created a preliminary inland flood footprint based on precipitation observations and forecasts as of Friday morning. Updates planned for late Sunday.

9-13-2018: We've put together preliminary wind and storm surge data for Hurricane Florence based on observed and forecast track data as of the morning of September 13. We’re working on an inland flood footprint and will be producing updates over the weekend.


Hurricane Nate October 2017


Hurricane Maria September 2017


9-20-2017: We've put together preliminary data for Hurricane Maria based on track data as of this afternoon, including wind speed data for impacted Caribbean islands and flood data for Puerto Rico.

Hurricane Irma September 2017


9-7-2017: We're shifting our catastrophe response efforts from Hurricane Harvey to Hurricane Irma.  Currently producing modeled wind speeds as Irma progresses through the Caribbean.  We'll be following the event over the next week, producing hazard data and providing loss analytics.

9-10-2017: We developed preliminary US wind and surge footprints while Irma was still in Florida on Sunday as well as a wind footprint for the Caribbean.  We'll be updating the footprints based on the final track and observations in the coming days.

9-13-2017: Based on the complete Irma track, we've developed updated wind and storm surge footprints plus inland flood.

Hurricane Harvey August 2017


8-27-2017: We've been working on Hurricane Harvey response over the weekend.  We have developed footprints for wind, storm surge, and a preliminary map for inland flood.  The inland flood event is on-going, so that footprint is our current best shot at delineating potentially impacted areas.  We will be following the event closely over the coming days and will be providing updates.  If you are interested in our data please contact us.

8-29-2017: We've been working on an updated version of the inland flood footprint utilizing observed precipitation data over that last few days.  Stayed tuned for the new footprint release.  In the mean time, we've been comparing the initial footprint against observed flooding, some examples in the Houston area are shown below.

8-30-2017: Today we released an updated inland flood footprint based on observed precipitation and forecast precipitation as Harvey travels northeast in the coming days.  We will continue to monitor the storm and provide updates.

9-7-2017: We released an updated inland flood footprint today based on additional observed data.  The Houston area is for the most part unchanged.  Moving on to Hurricane Irma response now.



Hurricane Matthew October 2016

We have developed an event response wind speed footprint covering the US and Caribbean.  Additionally, we also developed a flood inundation footprint covering both storm surge and inland flood in the US. Please contact us if you are interested in any of the data sets.

Louisiana Flooding August 2016

We are closely following the flooding event in southern Louisiana over the last few days.  The below figures show some of the heaviest impacted areas along with KatRisk flood modeling results.  We will continue to monitor the event and have developed a rapid event response footprint.  If you are interested in the event footprint or more detail please email us at

Click on the images below to enlarge.

Houston Area Flooding April 2016

We have evaluated the recent precipitation and resultant flooding in the Houston area and developed an initial event footprint.  This is a mosaic of our return period flood maps corresponding to the recorded precipitation and observed flooding.  Some of the most impacted locations include: the Greenspoint, Timber Lakes, and Cypress areas to the north and northwest of downtown Houston and the Meyerland area to the southwest. The initial footprint only covers Harris County.  If you are interested in a raster file of flood depths please email us at

South Carolina Flooding 2015

If you are interested in a raster file of flood depths for South Carolina, or more details regarding loss modeling capabilities, please email us at

KatRisk Estimates Total Property Losses from the South Carolina Flooding at $2.25 Billion

Although we are early in the process of assessing potential losses from the recent flooding in South Carolina, KatRisk has made an initial estimate of property losses for the state. Our loss estimate is based on the following model data:

  • A 10m high-resolution footprint of estimated flood depths across the state. The flood depth estimates utilize flood depth data across multiple return periods KatRisk has previously developed for the continental Unities States. See examples of flood data in the below images.

  • An estimate of total property exposure across the state, both covered and not covered by flood insurance.

  • Vulnerability curves relating flood depth to damage for building, content, and time element (additional living expense and business interruption) values.

Our best estimate of total loses is $2.25 billion with a 90% confidence range of $1.5 billion to $3.5 billion.  These estimates include both insured and uninsured property losses.

There are many uncertainties with each of the model inputs and additionally the final flood extent is still uncertain in some areas.  Current press headlines are stating the losses are in excess of $1 billion dollars.  These initial reported estimates are most likely based comparing this event with past natural catastrophe in order to provide some level of perspective on potential losses.  Over the course of the next few months, or longer, information on insurance payouts and aid assistance will help in refining estimates of total losses.  However, given that much of the flood losses are not insured, we will never have a perfect estimate.  The KatRisk analytical model based estimate is an attempt to provide a rapid indication of the range of potential losses for the event given current knowledge of the flood extent.  The approach is the same utilized by KatRisk to estimate potential future losses across the entire United States and many international regions.

Typhoon Dujuan

Houston and Austin May 2015 Flooding