Texas, 2017Tropical Storm and Flash Flooding in Texas, August 26 to 30, 2017
August 26 to 30, 2017 · NWS EWX · 34 events in 13 counties and zones
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane.
Every event with a place to put it; 12 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
Open the live radar over this ground
- Deaths
- 0
- Injuries
- 0
- Property damage
- $66 million
- Crop damage
- None recorded
- Events
- 34
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County. The maximum sustained winds were 46 mph recorded at Austin Bergstrom International Airport and at two private weather stations, one near Yorktown and the other near Smiley. The maximum recorded wind gusts were 58 mph at New Braunfels Airport, Randolph AFB, and at a private weather station near Smiley. The highest rainfall total was 29.19 inches outside of LaGrange in Fayette County. A number of places in Fayette, Lavaca, and Bastrop Counties received 20 or more inches of rain. Tropical storm force winds with estimated gusts up to 60 mph caused damage across the region. Trees and branches were knocked down by the winds. Some of these in turn knocked down power lines causing power outages in Bastrop, Comal, Hays, and Guadalupe Counties. At one point, 15,000 customers in Comal County were without power. There was also some minor structural damage in Caldwell, Comal, and Lavaca Counties. Maximum rainfall totals in these counties ranged from 4.67 inches in Bexar to 29.19 in Fayette. Flooding and flash flooding forced 608 people to be evacuated from their homes. Most of these, 400, were in Fayette County.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before the first event at Aug 26, 5:26 AM CST, 3 hours 48 minutes earlier.
Area forecast discussion, Aug 26, 5:26 AM CST, 3 hours 48 minutes before
Area Forecast Discussion
National Weather Service Austin/San Antonio TX
626 AM CDT Sat Aug 26 2017
.AVIATION...
As the bands of RA/ISOLD TSRA associated with Harvey spread across
our area, flying conditions will deteriorate across most areas.
Expect CIGs to fall to IFR most areas with reductions in VSBY, as
well. Could be LIFR CIGs at times, though chances too low to mention
in the TAFs. N to NE winds steadily increase from 15 to 25 KTs with
gusts to 35 KTs to 25 to 35 KTs with gusts to 48 KTs, then decrease
some tonight. Across western areas, VFR skies will prevail with winds
5 to 20 KTs with gusts to 25 KTs.
&&
.PREV DISCUSSION... /ISSUED 514 AM CDT Sat Aug 26 2017/
..Hurricane Harvey slowly moving inland bringing life-threatening
and catastrophic heavy rainfall across southeast Texas...
SHORT TERM (Today through Sunday)...
Bottom Line Upfront - Key Messaging Points:
1) A life-threatening and catastrophic heavy rainfall event is
expected east of I-35 and I-37.
2) Average rainfall amounts of 10-20 inches are expected east of
I-35 and I-37 Today through Wednesday. Isolated higher totals in
excess of 30 inches are possible near and south of the I-10
corridor.
3) Areas along the I-35 corridor and across the eastern Hill Country
including the cities of Austin and San Antonio should expect
5-15 inches of rain with higher totals possible. The upper end
of this estimate will likely be farther north towards Austin.
4) Catastrophic mainstem river flooding lasting many days is
expected east of I-35 and I-37 in the Colorado, Guadalupe, and
San Antonio river basins.
5) 70-80 mph winds are expected for counties in the Hurricane
Warning. Large trees could be snapped, power lines downed, and
damage to homes could occur. Power and communication outages are
likely.
6) 35-45 mph winds are expected within the area now under a Tropical
Storm Warning with gusts to 50 mph in rain bands. This includes
the San Antonio to San Marcos areas. Damage to trees and power
lines are possible, leading to scattered power outages.
7) A Wind Advisory has been issued for the counties just outside of
the Tropical Storm Warning area for winds between 25-35 mph with
gusts in excess of 40 mph in rain bands. This includes the city
of Austin.
8) There is a marginal risk for tornadoes east of I-35 and I-37
today. These small tornadoes are typically very fast moving
and short-lived. A Tornado Watch is currently in effect for
Fayette Lavaca Counties until 1 pm Saturday.
Discussion...
Hurricane Harvey continues to slowly move to the north/northwest at
5 knots as its eye is currently straddling the Goliad and Refugio
County border. Harvey is currently a low end category 2 hurricane and
will continue to weaken over land below hurricane force later today.
Confidence remains high that the lack of steering currents aloft
will cause Harvey to stall as it moves into DeWitt County later this
afternoon and evening as it falls below hurricane status. Rainfall
amounts through this afternoon should be highest along the inner
eyewall and in outer rainbands feeding into our southeastern and
eastern counties where average rainfall amounts of 3-6 inches are
expected with isolated higher amounts. A marginal tornado threat will
be possible with these outer rainbands, which have had the history
of producing brief spinups mostly over the western portions of
Houston's CWA. However, somewhat favorable shear with some discrete
stronger cells may be able to produce some brief spinups over our
eastern counties, so we have issued a Tornado Watch until early this
afternoon for Lavaca and Fayette Counties. This will be locally
extended further north or west if conditions warrant.
Heavy rainfall is expected to continue well into the overnight hours
mainly north and east of the center of Harvey. Rainfall amounts over
our eastern counties will likely average another 4-8 inches this
evening through Sunday morning, but the potential for much higher
isolated amounts will be possible. This is primarily due to strong
feeder bands currently over the western Gulf that will continuously
feed outer rain bands over our eastern counties which will have some
assistance from weak isentropic ascent east of Harvey's nearly
stationary center. Thus, confidence remains high that our easternmost
counties may have 10-15 inch totals with isolated higher amounts
just by Sunday morning alone.
Bigger uncertainties for rainfall tonight are in place for the I-35
corridor including Austin and San Antonio as it will be heavily
dependent on where the axis of heaviest rains associated with the outer
rainbands sets up and where exactly Harvey stalls. Very slight
shifts for either will result in a tight rainfall gradient on the
western and northern edge of Harvey's precipitation shield for the
overnight hours tonight. It currently appears that the greater
chances for heavy rainfall tonight will be closer to Austin than San
Antonio given the expected orientation of the rainbands and how much
orographic lift along the Escarpment may play a role despite
northeast surface winds. We hope confidence in rain amounts for
the overnight hours will improve as it becomes more clear if and
where these bands will set up.
Sunday's rainfall forecast will be heavily dependent on how much
convection is able to feed into Harvey's gradually weakening
circulation as it begins to slowly drift back south tomorrow morning
or afternoon. Confidence remains high that areas east of I-35 mainly
south of I-10 will continue to see 1-3 inches of rainfall on average
every 6 hours or so. This will continue to increase flooding issues
over our southeastern counties. Uncertainties will remain high along
the I-35 corridor, with the next 36 hours going a long way towards
determining whether locations along the I-35 corridor will end up
being closer to 5 inches on average or closer to 15 inches with
isolated higher amounts for the whole event that is expected to last
through the middle of next week.
LONG TERM (Sunday Night through Friday)...
The official forecast from the National Hurricane Center has Harvey
slowly moving south for the start of the long-term as it maintains
Tropical Storm strength through at least Tuesday. The forecast in
the extended will remain highly uncertain as various computer models
continue to show differing solutions as it is tough to handle the
storm within weak steering flow. The GFS continues to meander it
around the region through the end of the period which would continue
high chances of rain and possible flooding rains for the next 7 days.
What is even more concerning is that the ECMWF is doing the same
thing before finally getting it above 31 degrees north latitude next
Friday. We will continue 30 to 60 PoPs in the extended but these
will need to be increased if confidence continues to increase for the
potential prolonged presence of Harvey. Will not make any changes to
the expiration of the Flash Flood Watch, but this would need to be
extended if the progged solutions of the GFS/ECMWF verify as the
threat for significant flooding would continue.
Please, continue to monitor closely the National Hurricane Center
(www.nhc.noaa.gov) and the Austin/San Antonio Weather Forecast
Service Office (www.weather.gov/sanantonio) websites for updated
information about Harvey and its impacts.
&&
.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry 80 72 80 72 82 / 100 100 90 60 60
Austin Bergstrom Intl Airport 79 72 80 72 82 / 100 100 90 70 60
New Braunfels Muni Airport 80 72 80 71 82 / 100 100 90 70 60
Burnet Muni Airport 78 71 78 68 83 / 80 80 70 40 30
Del Rio Intl Airport 92 76 90 73 92 / 40 30 30 20 20
Georgetown Muni Airport 79 71 79 70 83 / 90 100 80 50 50
Hondo Muni Airport 85 72 83 70 87 / 70 70 70 40 40
San Marcos Muni Airport 81 72 80 71 82 / 100 100 90 70 60
La Grange - Fayette Regional 79 73 81 72 80 / 100 100 90 70 70
San Antonio Intl Airport 80 73 81 71 83 / 100 100 80 60 60
Stinson Muni Airport 81 74 82 72 82 / 100 100 80 60 60
&&
.EWX WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch through Tuesday evening for the following
counties: Atascosa...Bastrop...Bexar...Blanco...Caldwell...Comal...
De Witt...Fayette...Gonzales...Guadalupe...Hays...Karnes...
Kendall...Lavaca...Lee...Travis...Williamson...Wilson.
Tropical Storm Warning for the following counties: Atascosa...
Bastrop...Bexar...Caldwell...Comal...Fayette...Gonzales...
Guadalupe...Hays...Lavaca...Wilson.
Wind Advisory until 10 PM CDT this evening for the following
counties: Bandera...Blanco...Frio...Kendall...Lee...Medina...
Travis...Williamson.
Hurricane Warning for the following counties: De Witt...Karnes.
&&
Mesoscale/Aviation...04/Allen
Synoptic/Grids...LH/Hampshire
Public Service/Data Collection...YB
DSS...TB3
Hazardous weather outlook, Aug 26, 5:40 AM CST, 3 hours 34 minutes before
Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
640 AM CDT Sat Aug 26 2017
TXZ171>173-183>194-202>209-217>225-228-271145-
Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera-
Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde-
Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Maverick-Zavala-
Frio-Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-Dimmit-
640 AM CDT Sat Aug 26 2017
This Hazardous Weather Outlook is for South-Central Texas..
.DAY ONE...Today And Tonight.
Hurricane Harvey will continue to slowly move into southeastern
portions of South Central Texas later this morning where it is
currently predicted to stall. Harvey will continue to weaken over
land and fall below hurricane force later today as it moves into
DeWitt County. However, widespread heavy rainfall capable of
producing river and flash flooding will occur well to the north
and east of Harvey. This is just the beginning of a life-
threatening and catastrophic heavy rainfall event expected east of
I-35 and I-37 that may continue into the middle of next week.
A Hurricane Warning is in effect for 70 to 80 mph winds across
Karnes and Dewitt Counties. A Tropical Storm Warning is in effect
for winds of 35 to 50 mph across Atascosa, Bastrop, Bexar,
Caldwell, Fayette, Gonzales, Guadalupe, Lavaca, and Wilson
Counties. A Wind Advisory is in effect for Bandera, Blanco, Frio,
Kendall, Lee, Medina, Travis, and Williamson Counties for winds
of 25 to 35 mph with gusts to 40 mph in the stronger rainbands.
A Flash Flood Watch is in effect through Tuesday evening for
counties along and east of a line from Georgetown to Comfort to
Jourdanton.
There is a low risk of brief tornadoes east of I-35 and I-37
today. A Tornado Watch is currently in effect for Fayette, Lavaca,
and Lee Counties until 1 pm Saturday.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Hurricane Harvey will stall or move very slowly over eastern
parts of South Central Texas before sliding back south towards the
Gulf Coast on Sunday into early next week.
A Flash Flood Watch is in effect through Tuesday evening for
counties along and east of a line from Georgetown to Comfort to
Jourdanton. Life-threatening and catastrophic river and flash
flooding appears imminent for much of South Central Texas,
specifically for areas along and east of the I-35 and I-37
corridors. Storm total rainfall amounts through Tuesday of 10 to
20 inches are expected east of I-35 and I-37 with isolated totals
in excess of 30 inches possible. Devastating river flooding
lasting throughout next week is likely east of I-35 and I-37 in
the Colorado, Guadalupe, and San Antonio river basins.
There are large uncertainties in event rainfall totals for the
I-35 corridor and across the eastern Hill Country including the
cities of Austin and San Antonio. Our current forecast range of 5
to 15 inches with higher totals possible over these areas accounts
for this uncertainty, with the upper end of this estimate likely
be farther north towards Austin.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will be encouraged over the next several days
as Harvey evolves.
In the hours before
Local storm report, Aug 26, 8:04 AM CST, 1 hour 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
904 AM CDT SAT AUG 26 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HEAVY RAIN 4 NNE MEYERSVILLE 28.98N 97.29W
08/26/2017 M7.41 INCH DEWITT TX COCORAHS
24 HOUR RAINFALL THROUGH 7 AM TODAY.
&&
CVPEvent by event
17 flash flood, 12 tropical storm, 5 flood. Local standard time, as filed.
Tropical Storm, Bastrop
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Bastrop forecast zone
- Reported by
- Official NWS Observations
- Coordinates
- 30.104, -97.312 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
A number of places in Fayette, Lavaca, and Bastrop Counties received 20 or more inches of rain. Tropical storm force winds with estimated gusts up to 60 mph caused damage across the region. Trees and branches were knocked down by the winds. Some of these in turn knocked down power lines causing power outages. 100 People were evacuated in Bastrop County. Rainfall over the far western side of Bastrop County was about 12 inches, while the Smithville area had a 7 day rain total of nearly 24 inches. The Colorado River at Smithville crested near 32 feet on August 28, flooding about 60 homes in the Smithville area. There were about 150 low water crossings underwater and many roads were damaged. Overall estimates to damage in the county are about 1.5 million dollars, about a million of that coming from damage to roads and bridges.
Tropical Storm, Bexar
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Bexar forecast zone
- Property damage
- $100,000
- Reported by
- Official NWS Observations
- Coordinates
- 29.449, -98.520 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County. The maximum recorded wind gust was 58 mph at Randolph AFB. Areas of Bexar County received as little as 1 inch of rain in the SW part of the County, to nearly 6 inches in the far NE sections of Bexar County. A few low water crossings were flooded. Tropical storm force winds with estimated gusts up to 60 mph caused some minor tree damage, uprooted trees, and knocked out power.
Tropical Storm, Caldwell
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Caldwell forecast zone
- Reported by
- Official NWS Observations
- Coordinates
- 29.837, -97.620 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
Winds gusted to well over 50 mph across Caldwell County bringing some minor damage to trees and buildings. Minor structural damage was noted. The highest rainfall totals recorded across Caldwell County were between 15-20 inches across mainly north and east sections of the County. A few people were evacuated downstream of a small dam.
Heavy rain from Tropical Storm Harvey caused major flooding around the county. At one time, 140 roads were closed the most ever recorded. The emergency manager estimated that 75% of the county's roads were damaged by flooding. The cost of the damage to roads and dams was estimated at $10 million. There were 18 homes destroyed and another 198 damaged by flood water with a total cost of $2.85 million.
Tropical Storm, Comal
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Comal forecast zone
- Property damage
- $1.0 million
- Reported by
- Official NWS Observations
- Coordinates
- 29.808, -98.278 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
Winds frequently gusted over 50 mph across the county, The maximum recorded wind gusts were 58 mph at New Braunfels Airport. Tropical storm force winds with estimated gusts up to 60 mph caused damage across the region. Trees and branches were knocked down by the winds. Some of these in turn knocked down power lines causing power outages. At one point, 15,000 customers in Comal County were without power. There was also some minor structural damage in Comal County. Maximum rainfall totals were near 7 inches on the east side of the county. Several low water crossings were flooded for days. Wind driven rain led to water damage at the New Braunfels Police Department as well as the Christus Santa Rosa Hospital. Comal County hosted over 200 middle Texas coast evacuees.
Tropical Storm, Fayette
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Fayette forecast zone
- Reported by
- Official NWS Observations
- Coordinates
- 29.877, -96.920 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
Tropical Storm force winds and winds gusts caused minor tree damage. A few trees were uprooted. The highest rainfall total was 29.19 inches outside of LaGrange in Fayette County. Most locations in Fayette County received 20 or more inches of rain. Heavy rain and flooding caused the evacuation of about 400 residents as the Colorado River at LaGrange rose to 54.2 feet. This was the third highest crest ever. Much of the city below Waters Street was flooded. Schools in the Fayetteville Independent School District sustained $80,000 damage. There were roughly 400 impacted homes across the county, 200 had substantial flood damage, 150 moderate damage, and 50 minor damage. About 2 dozen businesses in and near LaGrange sustained major flood damage. Flooding was mainly along the Colorado River from Bastrop County all the way through Fayette County. Additional flooding and homes flooded along Buckners Creek in LaGrange and Cummins Creek near Round Top area. 5 to 6 homes flooded near Fayetteville. Infrastructure loss from roads and bridges across the county is about $500K. Insured/uninsured losses is unknown but is likely in the tens of millions.
Tropical Storm, Gonzales
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Gonzales forecast zone
- Property damage
- $100,000
- Reported by
- Official NWS Observations
- Coordinates
- 29.457, -97.492 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
Sustained tropical storm force winds were observed with gusts over 50 mph. Widespread wind damage was reported, but was confined to mainly trees and uprooted trees. Several creeks were well over their banks and led to significant flooding downstream. The widespread 10-15 inches of rain flooded out a couple of homes. The highest rainfall total recorded was nearly 20 inches of rain about 13 miles east of Gonzales.
Tropical Storm, Guadalupe
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Guadalupe forecast zone
- Property damage
- $50,000
- Reported by
- Official NWS Observations
- Coordinates
- 29.583, -97.949 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
Winds frequently gusted to over 50 mph during the event, producing scattered power outages and tree damage. Some trees were uprooted. Much of the county received 8-12 inches of rain, producing flooding on some roads and low water crossings. The highest recorded rain total near 12 inches was near Kingsbury. Monetary losses are estimated.
Tropical Storm, Hays
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Hays forecast zone
- Reported by
- Official NWS Observations
- Coordinates
- 30.058, -98.031 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
The eastern half of Hays County experienced tropical storm force winds with gusts as high as 50 mph during the storm. This produced some minor tree damage and knocked out power. 100 people were evacuated due to rising water on creeks and the threat of a small dam breach during the height of the event. A sinkhole developed on Highway 21 due to the heavy rain amounts. Across the county, rainfall totals averaged 8 to 12 inches along and east of Interstate 35. Monetary loss are estimates of road repair.
Tropical Storm, Karnes
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Karnes forecast zone
- Reported by
- Official NWS Observations
- Coordinates
- 28.906, -97.859 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
Across Karnes County, sustained tropical storm force winds brought some minor tree and branch damage but overall impact of the storm was limited to the far eastern sections of the County. Rainfall across the county averaged 3-6 inches.
Tropical Storm, Lavaca
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Lavaca forecast zone
- Property damage
- $100,000
- Reported by
- Official NWS Observations
- Coordinates
- 29.384, -96.930 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
The area received sustained Tropical Storm force winds with many gusts well over 50 mph. Several trees were down across the county including some structural damage noted in Yoakum and Shiner. The Navidad River reached record heights at both Sublime and Speaks. The high water mainly affected floodplain and no structures were directly impacted. Some roads were closed due to high water in the river, but also from the high rain totals across the county. The highest rain total was 20 inches of rain near Shiner. Other areas to the south likely received 15 to 20 inches based on radar estimates.
Tropical Storm, Lee
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Lee forecast zone
- Property damage
- $100,000
- Reported by
- Official NWS Observations
- Coordinates
- 30.311, -96.966 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
The largest impact across Lee County was the rainfall where as much as 20 inches fell near Giddings. The southern half of the county experienced the worst flooding with 25 homes being impacted, many of those having experienced major damage. The tropical storm force winds did bring some trees down across the county.
Tropical Storm, Wilson
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Wilson forecast zone
- Reported by
- Official NWS Observations
- Coordinates
- 29.174, -98.087 (the zone’s center; the record gives no point)
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
Winds of 30 to 40 mph were persistent across the county while rainfall totals averaged near 8 inches near Stockdale to only a few inches to the southwest side of the County. Few overall problems were observed across Wilson County.
Flood, Hays
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Hays County, 4.32 mi WNW of Kyle to 4.2 mi W of Niederwald
- Cause
- Heavy Rain / Tropical System
- Property damage
- $100,000
- Reported by
- Emergency Manager
- Coordinates
- 30.011, -97.933
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of August 26th. The center of the storm made a loop through Gonzales, Karnes, and DeWitt Counties before exiting our County Warning Area during the afternoon of August 27th moving into Victoria County.
The eastern half of Hays County experienced tropical storm force winds with gusts as high as 50 mph during the storm. This produced some minor tree damage and knocked out power. 100 people were evacuated due to rising water on creeks and the threat of a small dam breach during the height of the event. A sinkhole developed on Highway 21 due to the heavy rain amounts. Across the county, rainfall totals averaged 8 to 12 inches along and east of Interstate 35. Monetary loss are estimates of road repair.
Flood, Lee
- When
- August 26, 9:14 AM CST to August 27, 7:13 AM CST
- Where
- Lee County, 0.5 mi SW of Fedor to 2.35 mi SW of Old Dime Box
- Cause
- Heavy Rain / Tropical System
- Property damage
- $250,000
- Reported by
- Emergency Manager
- Coordinates
- 30.315, -97.056
The largest impact across Lee County with Harvey was the rainfall where as much as 20 inches fell near Giddings. The southern half of the county experienced the worst flooding with 25 homes being impacted, many of those having experienced major damage. The tropical storm force winds did bring some trees down across the county. Damage from the flooding is estimated to be near 250K dollars.
Flash Flood, Williamson
- When
- August 26, 6:15 PM CST to 8:12 PM CST
- Where
- Williamson County, 2.18 mi W of Hutto to 2.51 mi W of Hutto
- Cause
- Heavy Rain / Tropical System
- Reported by
- Law Enforcement
- Coordinates
- 30.531, -97.587
Heavy rain from Tropical Storm Harvey caused flash flooding closing CR 123 at Brushy Creek near Hutto.
Flash Flood, Williamson
- When
- August 26, 7:12 PM CST to 8:12 PM CST
- Where
- Williamson County, 4 mi E of Leander to 3.07 mi E of Leander
- Cause
- Heavy Rain / Tropical System
- Reported by
- Law Enforcement
- Coordinates
- 30.580, -97.783
Heavy rain from Tropical Storm Harvey caused flash flooding closing CR 177 at Brushy Creek in Leander.
Flash Flood, Caldwell
- When
- August 26, 7:59 PM CST to August 27, 3:45 AM CST
- Where
- Caldwell County, 1.51 mi NNW of Lytton Spgs to 1.67 mi W of Lytton Spgs
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 30.020, -97.630
Heavy rain from Tropical Storm Harvey produced flash flooding leading to a swift water rescue near Lytton Springs.
Flood, Caldwell
- When
- August 26, 7:59 PM CST to August 28, 4:45 AM CST
- Where
- Caldwell County, 2.63 mi ESE of Niederwald to 2.73 mi NE of Dale
- Cause
- Heavy Rain / Tropical System
- Property damage
- $13 million
- Reported by
- Emergency Manager
- Coordinates
- 29.962, -97.707
Heavy rain from Tropical Storm Harvey caused major flooding around the county. At one time, 140 roads were closed the most ever recorded. The emergency manager estimated that 75% of the county's roads were damaged by flooding. The cost of the damage to roads and dams was estimated at $10 million. There were 18 homes destroyed and another 198 damaged by flood water with a total cost of $2.85 million.
Flash Flood, Caldwell
- When
- August 26, 8:01 PM CST to August 27, 3:45 AM CST
- Where
- Caldwell County, 0.92 mi SE of Luling Meml Arpt to 1.89 mi SW of Luling Meml Arpt
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 29.720, -97.640
Heavy rain from Tropical Storm Harvey produced flash flooding leading to a swift water rescue just north of Luling.
Flash Flood, Bastrop
- When
- August 26, 8:38 PM CST to August 27, 3:45 AM CST
- Where
- Bastrop County, 4.2 mi NW of Bateman to 1.17 mi WSW of Cedar Creek
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 30.020, -97.540
Heavy rain from Tropical Storm Harvey produced flash flooding leading to a swift water rescue near Cedar Creek.
Flash Flood, Bastrop
- When
- August 26, 10:25 PM CST to August 27, 3:45 AM CST
- Where
- Bastrop County, 3.3 mi NNW of Rockne to 1.49 mi NW of Rockne
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 30.040, -97.460
Heavy rain from Tropical Storm Harvey produced flash flooding leading to a water rescue near Rockne.
Flash Flood, Bastrop
- When
- August 26, 10:28 PM CST to August 27, 3:45 AM CST
- Where
- Bastrop County, 1.8 mi E of Smithville to 1.99 mi ESE of Smithville
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 30.000, -97.140
Heavy rain from Tropical Storm Harvey produced flash flooding leading to a water rescue near Smithville.
Flash Flood, Caldwell
- When
- August 26, 10:42 PM CST to August 27, 3:45 AM CST
- Where
- Caldwell County, 2.5 mi WNW of Brownsboro to 3.09 mi E of Luling Meml Arpt
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 29.790, -97.640
Heavy rain from Tropical Storm Harvey produced flash flooding leading to multiple water rescues and 100 low water crossings being closed around the southern part of the county.
Flash Flood, Bastrop
- When
- August 26, 10:56 PM CST to August 27, 3:45 AM CST
- Where
- Bastrop County, 1.24 mi SE of Smithville Muni Arpt to 1.24 mi ENE of Smithville
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 30.017, -97.155
Heavy rain from Tropical Storm Harvey produced flash flooding that closed the eastbound lanes of Hwy 71 at Smithville.
Flash Flood, Bastrop
- When
- August 27, 12:10 AM CST to 3:45 AM CST
- Where
- Bastrop County, 1.2 mi E of Smithville to 1.67 mi NNE of Smithville
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 30.000, -97.150
Heavy rain from Tropical Storm Harvey produced flash flooding leading to a swift water rescue in Smithville.
Flash Flood, Bastrop
- When
- August 27, 12:13 AM CST to 3:45 AM CST
- Where
- Bastrop County, 0.69 mi S of Smithville Muni Arpt to 0.44 mi SE of Smithville Muni Arpt
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 30.020, -97.170
Heavy rain from Tropical Storm Harvey produced flash flooding leading to a swift water rescue and several residences being surrounded by flood water in Smithville.
Flash Flood, Bastrop
- When
- August 27, 12:15 AM CST to 3:45 AM CST
- Where
- Bastrop County, 1.2 mi E of Smithville to 1.41 mi ENE of Smithville
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 30.000, -97.150
Heavy rain from Tropical Storm Harvey produced flash flooding leading to a swift water rescue in Smithville.
Flash Flood, Fayette
- When
- August 27, 3:12 AM CST to 4:45 AM CST
- Where
- Fayette County, 3.09 mi SSW of Nechanitz to 3.11 mi SE of Winchester
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 29.987, -96.835
Heavy rain from Tropical Storm Harvey produced flash flooding closing numerous roads around the county.
Flash Flood, Caldwell
- When
- August 27, 6:39 AM CST to August 28, 4:45 AM CST
- Where
- Caldwell County, 2.98 mi ENE of Luling to 3.13 mi E of Luling
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 29.690, -97.602
Heavy rain from Tropical Storm Harvey produced flash flooding leading to a water rescue on FM 1322 outside of Luling.
Flash Flood, Caldwell
- When
- August 27, 11:14 AM CST to August 28, 4:45 AM CST
- Where
- Caldwell County, 2.76 mi S of Uhland to 2.21 mi S of Niederwald
- Cause
- Heavy Rain / Tropical System
- Reported by
- Emergency Manager
- Coordinates
- 29.930, -97.780
Heavy rain from Tropical Storm Harvey produced flash flooding leading to a swift water rescue near Misty Ln. at FM 2720 near Uhland.
Flash Flood, Fayette
- When
- August 27, 11:18 AM CST to August 28, 4:45 AM CST
- Where
- Fayette County, 2.25 mi NNE of West Pt to 3.31 mi NE of Halsted
- Cause
- Heavy Rain / Tropical System
- Reported by
- Department of Highways
- Coordinates
- 29.981, -97.009
Heavy rain from Tropical Storm Harvey produced flash flooding closing numerous roads in the county including sections of Hwy 71.
Flood, Fayette
- When
- August 27, 1:00 PM CST to August 30, 1:00 AM CST
- Where
- Fayette County, 0.83 mi SSW of Rabbs Prairie to 1.97 mi NNE of Warrenton
- Cause
- Heavy Rain / Tropical System
- Property damage
- $50 million
- Reported by
- Emergency Manager
- Coordinates
- 29.960, -96.907
Tropical Storm force winds and winds gusts caused minor tree damage. A few trees were uprooted. The highest rainfall total was 29.19 inches outside of LaGrange in Fayette County. Most locations in Fayette County received 20 or more inches of rain. Heavy rain and flooding caused the evacuation of about 400 residents as the Colorado River at LaGrange rose to 54.2 feet. This was the third highest crest ever. Much of the city below Waters Street was flooded. Schools in the Fayetteville Independent School District sustained $80,000 damage. There were roughly 400 impacted homes across the county, 200 had substantial flood damage, 150 moderate damage, and 50 minor damage. About 2 dozen businesses in and near LaGrange sustained major flood damage. Flooding was mainly along the Colorado River from Bastrop County all the way through Fayette County. Additional flooding and homes flooded along Buckners Creek in LaGrange and Cummins Creek near Round Top area. 5 to 6 homes flooded near Fayetteville. Infrastructure loss from roads and bridges across the county is about $500K. Insured/uninsured losses is unknown but is likely in the tens of millions.
Flood, Bastrop
- When
- August 27, 2:00 PM CST to August 29, 1:00 AM CST
- Where
- Bastrop County, 3.68 mi W of Bastrop to 3.89 mi NE of Phelan
- Cause
- Heavy Rain / Tropical System
- Property damage
- $1.5 million
- Reported by
- Emergency Manager
- Coordinates
- 30.122, -97.382
A number of places in Fayette, Lavaca, and Bastrop Counties received 20 or more inches of rain. Tropical storm force winds with estimated gusts up to 60 mph caused damage across the region. Trees and branches were knocked down by the winds. Some of these in turn knocked down power lines causing power outages. 100 People were evacuated in Bastrop County. Rainfall over the far western side of Bastrop County was about 12 inches, while the Smithville area had a 7 day rain total of nearly 24 inches. The Colorado River at Smithville crested near 32 feet on August 28, flooding about 60 homes in the Smithville area. There were about 150 low water crossings underwater and many roads were damaged. Overall estimates to damage in the county are about 1.5 million dollars, about a million of that coming from damage to roads and bridges.
Flash Flood, Gonzales
- When
- August 27, 11:02 PM CST to August 28, 4:45 AM CST
- Where
- Gonzales County, 4.54 mi E of Waelder to 6.42 mi E of Waelder
- Cause
- Heavy Rain / Tropical System
- Reported by
- County Official
- Coordinates
- 29.705, -97.225
Heavy rain from Tropical Storm Harvey produced flash flooding closing I-10 at mile marker 655.
- Tropical Storm
- A tropical cyclone with sustained winds of 34 to 63 knots (39 to 73 mph).
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Tropical Storm and Storm Surge in Texas, August 26 to 31, 201720 deaths · 1 injured · $5.3 billion · 11 events
- Tornado and Flooding in Florida, August 26 to 29, 20172 deaths · $1.9 million · EF0 · 7 events
- Tornadoes and Storm Surge in Louisiana, August 26 to 31, 2017$75 million · EF2 · 15 events
- Lightning Strike in Alabama, August 26, 20171 death · 5 injured · 1 event
- Hurricane and Flood in Texas, August 26 to 31, 2017$3.1 million · 2 events
- Lightning Strike in Minnesota, August 26, 2017$200,000 · 1 event
- Hail in North Dakota, August 26, 2017$130,000 · 2.5 in hail · 3 events
- Hail and Damaging Winds in Nebraska, August 26 to 27, 2017$27,000 · 2.75 in hail · 8 events
- Wildfire in Idaho, August 26, 2017$30,000 · 1 event
- Hail in South Dakota, August 26, 20172 in hail · 11 events
- Heat in California, August 26 to 31, 20178 events
- Hail in Nebraska, August 26, 20172.5 in hail · 8 events
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 720274, 720275, 720276, 720277, 720278, 720279, 720280, 720281, 720282, 720283, 720284, 720285, 798843, 798844, 720617, 720618, 720297, 720625, 720299, 720302, 720303, 720305, 720306, 720413, 720415, 720416, 720418, 720420, 720447, 720448, 720449, 798846, 798845, 720450.