-Severe Stats -Frequent Products Unreported storm tides in this region likely reached as high as reached 10-12 feet. -Activity Planner -Miscellaneous Info Prior to Harvey, four hurricanes have generated storm surges of at least 13 feet at Port Lavaca, but none since Hurricane Carla hit 56 years ago. The flooding damage will be compounded by Hurricane Harvey’s storm surge, a mound of water piled up by the storm’s winds and pushed onto land as it approaches and makes landfall. Harvey has developed an organized inner core and is in an environment favorable for strengthening. -National -Old Climate Page -NOAA If you have any questions about Harvey or anything related to coastal flooding in general, shoot me an email and I will try to get back to you ASAP. Hurricane Sandy’s surge inundated New York City and New Jersey. I’ve Lived Through Tropical Storms. As a tropical storm, Harvey dropped 40-61 inches of rainfall in southeast Texas and southwest Louisiana. As Harvey is forecast to stall near the central Texas coast, and the circulation around hurricanes is counterclockwise, locations like Freeport, Galveston, Galveston Bay and Bolivar Peninsula will observe days of strong onshore winds. -Public Information Statement This blog post provides some insights on Harvey’s storm surge and widespread flood threat. UPDATE (August 25, 10:15 PM EST): Hurricane Harvey has become a Category 4 storm with sustained winds of over 130 miles per hour.The storm is due to make landfall near the town of Rockport, Texas, sometime tonight. He is the founder and president of Marine Weather and Climate. -Local -Graphs and Atlantic Ave. Harvey has struck an area that has observed multiple major hurricane strikes and storm surge events in the past century. NEWARK, Calif. - September 09, 2017 - RMS has estimated that the insured loss from Hurricane Harvey will be between $25 to $35 billion, with an upper bound of $40 billion. That’s more than any other natural disaster in U.S. history except Hurricane Katrina . It has blown a number of records out of the water. Hurricane Sandy’s surge inundated New York City and New Jersey. Additionally, you have many other processes affecting water levels during a storm or hurricane. The last hurricane to make landfall in the state was Hurricane Ike in 2008. -Models An estimated 300,000 structures and 500,000 vehicles were damaged or destroyed in Texas alone. Galveston Bay area received 1 to 4 ft rises. Harvey has now re-formed into a tropical depression off the northwest coast of the Yucatan Peninsula. Only around 10 percent of the river forecast points in southeast Texas remained below flood stage due to the event, and approximately 46 percent of the river forecast points reached new record levels. September 2017 has accumulated the most cyclone energy of any month on record in the Atlantic. The red line in this graph is observed water level and the blue line is predicted water level, based on astronomical tides. All NOAA. A strong rainband developed over Fort Bend and Brazoria Counties during the evening hours of the 26th and spread into Harris County and slowed while training from south to north. -Weather Safety Harvey may then stall or meander for a few days, leading to a dangerous flood threat in parts of Texas and Louisiana. Hurricane Harvey (2017) caused extensive flooding in coastal Texas due to a combination of storm surge and heavy precipitation. On the east side of Harvey, a storm surge up to 12.5 feet affected eastern Aransas, southeastern Refugio, and … Multiple locations were found. The minimum pressure of Harvey is estimated to be 937 mb, based on a dropsonde measurement of 938 mb with 10 kt of surface wind at 0215 UTC 26 August . The flooding damage will be compounded by Hurricane Harvey’s storm surge, a mound of water piled up by the storm’s winds and pushed onto land as it approaches and makes landfall. Widespread 2-4' surge has been observed from Port O'Connor to Galveston Bay. -Lake Charles -Storm Data -NCDC/NCEI -Beach -Houston Intercontinental More than 118,000 homes in the Houston area are potentially at risk of storm surge damage should Hurricane Harvey reach Category 3, according to a report by CoreLogic. Strong squalls of rain and wind will occur east of Harvey's circulation center. Hurricane Harvey started as a tropical wave off the African coast on Sunday, August 13th and tracked westward across the Atlantic and on August 17th become a tropical storm which moved into the Caribbean Sea where Harvey become disorganized. Hurricane #Harvey continues to pound #PortLavaca #Texas with wind and storm surge. Harvey is a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale. Some additional strengthening is possible before Harvey makes landfall overnight. -Storm Prediction Center The highest storm surge found due to Hurricane Harvey was an 8.4 ft surge near Palacios. For the most frequent updates, check out the U-Surge Hurricane Harvey page. The morning of the 27th saw additional rain bands continued to develop and produced additional excessive rainfall amounts. -Climate Summaries Hurricane Katrina’s storm surge drowned New Orleans. Additional information on Harvey is in our Upper Texas Tropical Cyclones in the 2010s page. Water levels in places like Rockport, Texas have been highly variable. Harvey has generated the highest storm surge at Port Lavaca since Hurricane Carla (1961). Data from three 11-day periods before, during, and after the storm (Figure 2) were visualized to characterize magnitude, duration, and spatial variation of medical surge associated with Hurricane Harvey. “Hurricane” Hal Needham is a storm surge scientist who specializes in data-driven storm surge analysis. Harvey dumped more rain on the United States than any previous hurricane. The scope of flooding in areas with low National Flood Insurance Program(NFIP) participation lends to the large uncertainty in the dam… -Find It Quick, Tropical Harvey meandered around southern Texas for days as a weakening hurricane and tropical storm. Questions? Even before that, Hurricane Rita in 2005 caused $25 billion in damage to the region. Photos from Tornadoes and Thunderstorm Winds, CURRENT HAZARDS Freeport has a 3.5 ft storm surge. Storm surges are one of the greatest threats to life during a hurricane, and Texas is about to be battered with the full might of Hurricane Harvey. As Harvey is forecast to stall near the central Texas coast, and the circulation around hurricanes is counterclockwise, locations like Freeport, Galveston, Galveston Bay and Bolivar Peninsula will observe days of strong onshore winds. While there have been more storms than usual, they’ve all been pretty dinky and short-lived. -Galveston Beach Patrol (Flag Warning System), FORECASTS Favorable water temperatures and winds mean there’s “the possibility now, Larger Perspective on Coastal Flooding and Extreme Events, For the most frequent updates, check out the, Four Storm Surges in One Storm: Perspective on Irma’s Wild Coastal Floods, Here’s How You Can Help Hurricane Researchers Map Irma’s Flooding, I’m a Hurricane Researcher. The maximum potential storm surge for a particular location depends on a number of different factors. -Evacuation Planning Much of that flooding comes from the storm surge, which isn't reflected in the measurement of a hurricane's intensity, though it is a major cause of damage and danger. -Weather History, Education/Careers -FAQ, Rivers/Lakes/Bayous Storm Surge. Harvey meandered around southern Texas for days as a weakening hurricane and tropical storm. -Twitter ... which can be used to predict storm surge. This will be a major problem, as Harvey is forecast to dump 20+ inches of rain across a widespread area over the next week. As the center of Harvey slowly moved east-southeast and back offshore heavy rainfall continued to spread through much of the 29th and the 30th exacerbating the ongoing widespread and devastating flooding. The total destruction that Harvey will bring is far from clear. -Publications/Brochures Affected areas can expect heavy rains, high winds, and, along the coast, storm surge in the hours and days ahead. Sorry, the location you searched for was not found. Between 4.62 and 56 inches fell across the area with the lowest rainfall totals falling in the Crockett area and the highest rainfall totals falling in the Friendswood area. Farther east from the center of circulation, around the Houston-Galveston-Freeport area, expect persistent onshore winds with strong squalls today. -National Weather Service Part of the problem is that storm surge is only the result of two processes: 1) wind piling water against the coast and 2) low atmospheric pressure that causes ocean level to go up. The 2017 Atlantic hurricane season is one for the history books. Port Lavaca had observed four storm surges exceeding 13 feet in the past century but nothing higher than 6.9 feet since 1961. -Weather Ready Nation -Astronomical Info For some in New York, it may have brought back memories of Sandy, another destructive October storm that broke flood records and upended the region. Tornadoes most often are spawned in these bands well east of the circulation. -FloodAware -College Station Data from the Air Force and NOAA Hurricane Hunter aircraft indicate that the minimum central pressure is falling. -Web Weather for Kids -Careers After moving offshore, Harvey made a third landfall just west of Cameron, Louisiana on the morning of the 30th and brought more heavy rainfall to the Northern Gulf States. Hurricane Andrew (1992) was a powerful but geographically compact hurricane the made landfall south of Miami and did not generate substantial surge in Fort Lauderdale or Palm Beach. The estimate also includes gross losses accrued to the National … Storm surge levels closest to Harvey’s center of circulation will be highly variable, depending upon wind direction. -Brazos River Authority, CLIMATE The hurricane centre said: "Life-threatening and devastating flooding expected near the coast due to heavy rainfall and storm surge." It has blown a number of records out of the water. Here is the National Hurricane Center's Tropical Cyclone Report. Thunder starting again and lights flickering, so I guess that means I’m done here! ... 2008 (Ike) and 2017 (Harvey). Please try another search. Hurricane Laura was barreling towards the coast of the southern US states of Louisiana and Texas on Wednesday as a monster Category 4 storm, prompting warnings of "unsurvivable" storm surge and evacuation orders for hundreds of thousands of Gulf Coast residents. Even a modest storm surge in this area could exacerbate flooding, as a prolonged storm surge of 2-4 feet in Galveston Bay will impede the drainage of torrential rainfall. -more, PREPAREDNESS/SAFETY -Center Weather Service Units Deadly storm surge - the push inwards of abnormally high ocean water above regular tides - could reach 12 feet, the National Hurricane Center warned, calling Harvey life-threatening. The NHC provides maps of all different measurements during a hurricane like Harvey. Here is the West Gulf River Forecast Center's ArcGIS Storymap. This resulted in a rapid development of flash flooding between 10:00 p.m. and 1:00 a.m. as tremendous rainfall rates occurred across much of Harris County. Of these, 60 points (approximately 90%) reached flood stage. -Historical Tracks Like a washer machine on heavy duty cycle. -StormReady ... 2008 (Ike) and 2017 (Harvey). In the following hydrographs, the yellow line represents bankfull, the orange area is within flood stage, the red area is moderate flood stage, and the purple area represents major flood stage. Both were large, powerful storms that hit in vulnerable locations. Harvey made landfall along the Texas coast near Port Aransas around 10:00 p.m. on August 25th as a cat 4 and brought devastating impacts. Please Contact Us. Surge could be recorded as far as 30 miles inland. The lowest observed pressure on land was 940.8 mb reported by a storm chaser in Rockport at 0331 UTC 26 August. Here is the Weather Prediction Center's (WPC) Hurricane Harvey Page. This Is Why Irma Worries Me, Harvey’s Rain and Surge Flooding Could be Catastrophic for Houston and Galveston, Tropical Depression Harvey Is Threatening Texas with Major Flooding, Sandy’s Surge Was Extreme. 5 Day Forecasted Rainfall Totals as of 5AM 8/26. -Hurricane Harvey I hope I can access email on my phone and you can contact me at hal@marineweatherandclimate.com. -Local Data/Records The last hurricane to make landfall in the state was Hurricane Ike in 2008. -more, SocialMedia But none of them have occurred since Hurricane Allen struck 37 years ago. Even before that, Hurricane Rita in 2005 caused $25 billion in damage to the region. Houston/Galveston, TX1353 FM 646 Suite 202Dickinson, TX 77539281-337-5074Comments? Stations farther inland experienced some of the highest water levels as freshwater runoff from rainfall added to already elevated heights. As I told a reporter on the phone yesterday, our foremost problems are public perception and lack of awareness. For example, a Category 4 storm hitting the Louisiana coastline, which has a very wide and shallow continental shelf, may produce a 20-foot storm surge, while the same hurricane in a place like Miami Beach, Florida, where the continental shelf drops off very quickly, might see an 8 or 9-foot surge. -Drought, History Areas closest to Harvey’s circulation center may see rapid water level rises and falls as wind direction changes from offshore to onshore and vice versa. Long-term records for permanent USGS streamgages are available at the USGS National Water Information System (NWIS). -Forecast Discussion -Aviation Hurricane Harvey: What is a storm surge and why is it dangerous? -Granger (Central Texas) Here is our most recent Post Tropical Cyclone Report. -Jefferson County Drainage District 6 Data from three 11-day periods before, during, and after the storm (Figure 2) were visualized to characterize magnitude, duration, and spatial variation of medical surge associated with Hurricane Harvey. The storm surge from Hurricane Ike floods a public park on the waterfront September 12, 2008 in Texas City, Texas. Hurricane Harvey is currently striking the fourth region that concerns me. In some places these storm surges were expected to be more than 9 feet (2.7m) high. The storm surge from Hurricane Ike floods a public park on the waterfront September 12, 2008 in Texas City, Texas. -Evacuation Routes The last substantial storm surge in this region occurred in 1921, when a hurricane generated a 10.5-foot surge. On the west side of Harvey, winds pushed water across Corpus Christi and Copano Bays. Surge could be recorded as far as 30 miles inland. The official National Hurricane Center track and intensity forecast depicts Harvey tracking towards the Texas coast by Friday evening, and then stalling for, The destructive force of storm surge was on clear display this weekend as Hurricane Matthew ripped across the Caribbean, Florida and the Carolinas. As Harvey is forecast to drift for several days, a change in the center of circulation by even a few miles can change the wind direction from offshore to onshore in places. -Galveston -Houston Hobby US Dept of Commerce -Feed Hurricane Katrina's 20-foot storm surge in New Orleans breached the city's levees 15 years ago. Harvey is forecast to make landfall as a major hurricane in this region with maximum sustained wind speeds exceeding 110 mph and a storm surge of 6-12 feet. Once we truly understand our risks, widespread support for coastal protection rapidly increase and funding these projects follows. It Could Become Normal, ‘Extremely Active’ Hurricane Season Is Forecast as Peak Lies Ahead. However, this is just the beginning of a saga that could last the better part of a week. -CoCoRaHS Time series of storm tide (surge plus tide) levels at Port Lavaca above mean sea level from 1900-2017. When it made landfall hours earlier, Harvey easily was the strongest hurricane to hit the United States since Charley in 2004 and the first Category 3 or greater storm … Forecast rainfall totals from Hurricane Havey through Thursday. National Oceanic and Atmospheric Administration NWS Storm surge is a very complex phenomenon because it is sensitive to the slightest changes in storm intensity, forward speed, size (radius of maximum winds-RMW), angle of approach to the coast, central pressure (minimal contribution in comparison to the wind), and the shape and characteristics of coastal features such as … The city has observed seven storm surges that have exceeded 7.9 feet in the past 102 years, or about one surge every 15 years over that threshold. This resulted in a storm surge of up to 12 feet that affected Port Aransas and western Aransas county. Again, what is truly exceptional about Harvey is the likelihood of it stalling and dumping tremendous rainfall, which will be coupled with a long-term storm surge. But forecasters expect that to change in the coming weeks as the peak of the hurricane season arrives. The National Oceanic and Atmospheric Administration estimated total damage at $125 billion, with a 90% confidence interval of $90–160 billion. 'Unsurvivable' storm surge feared as Hurricane Laura strengthens to Cat 4. -Fire -Our Office The 1947 Hurricane smashed the coastline of Palm Beach County with a powerful storm surge. Hurricane Carla (1961) made landfall in the Port Lavaca region, but generated several powerful tornadoes that caused substantial damage in Galveston. -Satellite -more, ADDITIONAL INFO -National Weather Service Upon the NHC resuming advisories for Harvey at 15:00 UTC on August 23, a hurricane watch was issued in Texas from Port Mansfield to San Luis Pass, while a tropical storm watch was posted from Port Mansfield south to the mouth of the Rio Grande and from San Luis Pass to High Island. Please select one of the following: -Galveston Beach Patrol (Flag Warning System), National Oceanic and Atmospheric Administration, GOES 16 IR Satellite as Category 4 Hurricane Harvey makes landfall, 5 Day Rainfall Total based on rivers and bayous (courtesy of the West Gulf River Forecast Center), Catastrophic flooding as seen on one road near Houston on 8/28, GOES 16 IR Satellite as Category 4 Hurricane Harvey Makes Landfall, GOES 16 Visible Satellite as Category 4 Hurricane Harvey Makes Landfall via NWS Tallahassee, GOES 16 Daytime Composite on 8/31 Showing River and Lake Expansions, NWS HGX Radar Showing Heavy Rain Falling Over the Area along with Active Warnings @ 4:07AM on 8/27/17, GOES 16 Visible Satellite Red Band on 8/25 at 4 PM, 5 Day Rainfall Totals within Rivers & Bayous Courtesy of West Gulf River Forecast Center, Preliminary Crest Table for Record Crests of River Forecast Points, River & Bayou Measuring Points as of 8/27 at 5AM, EF 0 Flipped a Trailer in Matagorda County, Thunderstorm Wind Damage on a Home in Jackson County, Colorado River Flooding in Matagorda County, Lake Houston Spillway on 8/30 via Jeff Linder, Harris County Sheriff Office Texas Air Support Aerial View on 8/30, I-10 at Jefferson/Chambers County Line via Dade Phelan, Flooded Homes near Lake Houston on 8/31 via Jeff Linder, Beltway 8 at I-10 near Westheimer on 9/2 via Harris County Toll Road Authority, Storm Surge Remnants from 8 ft Surge in Jackson County. 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