Slow moving showers and thunderstorms caused early morning flash flooding close to the downtown Houston area.
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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.
The episode as NWS HGX wrote it up.
Slow moving showers and thunderstorms caused early morning flash flooding close to the downtown Houston area.
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 Houston/Galveston, TX wrote its last area forecast discussion before the first event at Jun 25, 3:41 AM CST, 39 minutes earlier.
Area Forecast Discussion National Weather Service Houston/Galveston TX 441 AM CDT Sun Jun 25 2017 .DISCUSSION... Remnant boundary near the coast has re-fired complements of deep resident moisture, some additional speed convergence, and an increasingly diffluent flow aloft. Expect the precip to expand in areal coverage for the next several hours. Weak steering flow remains in place so the threat of slower moving localized heavy rain will persist once again today. PSX and a few other spots have already picked up over 3" overnight. Similar to yesterday, much of the evolution/timing/details will play out on the mesoscale. There's some additional boundaries lying around the region, so those and any new ones may come into play as will daytime heating. Suspect southern areas will get somewhat of a break later this morning and the focus becomes further north where it isn't currently raining. Then as southern areas are given some time to possibly recharge and warm into the lower 80's, we could see some redevelopment there later today. Rinse & repeat for the next couple days as overall pattern doesn't change all that much. PW's trend downward some into midweek and we'll probably lose the front and/or larger scale focusing boundaries. Overall daily coverage should slightly diminish and trend more toward a more typical summertime diurnal pattern during the second part of the work week. Rain chances should begin to further decrease going into next weekend as the eastern ridge starts building into the region displacing the mid/upper weakness aloft. 47 && .MARINE... An unsettled weather pattern will continue this week with periods of showers and thunderstorms expected each day through at least mid week. Generally light to occasionally moderate easterly to southeasterly flow is expected through mid week, at which time the flow becomes more southerly and increases as SE Texas becomes wedged in between surface high pressure over the E CONUS and a low pressure system over the lee of the Rockies. Tides still seem to be running about 1.0-1.5 feet above normal this evening, and this will likely continue for the next several days. High tide this morning should come in near or just below 3 feet, which should keep the threat of wave run up over Hwy 87 on Bolivar relatively low in comparison to previous mornings. However, the easterly to southeasterly flow over the next several days could produce strong rip currents and longshore currents along Gulf-facing beaches, and a Beach Hazards Statement for hazardous swimming conditions may be required later this morning. 11 && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 84 71 89 72 90 / 50 30 40 20 30 Houston (IAH) 86 73 88 73 89 / 50 30 50 20 40 Galveston (GLS) 87 78 87 78 87 / 40 30 30 30 40 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...NONE. GM...NONE. &&
Hazardous Weather Outlook National Weather Service Houston/Galveston TX 610 AM CDT Sat Jun 24 2017 TXZ163-164-176>179-195>199-251115- Brazos-Burleson-Grimes-Houston-Madison-Montgomery-Polk- San Jacinto-Trinity-Walker-Washington- 610 AM CDT Sat Jun 24 2017 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight Showers and thunderstorms are expected today. Widespread hazardous weather is not expected, although 25 to 35 mph wind gusts and localized heavy rainfall will be a possibility in the stronger cells. .DAYS TWO THROUGH SEVEN...Sunday through Friday Increased chances of showers and thunderstorms should persist into early next week. With slow storm motions, we will continue to monitor the possibility for some localized heavy rainfall. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time. TXZ214-237-238-251115- Brazoria-Chambers-Galveston- 610 AM CDT Sat Jun 24 2017 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight Elevated tide levels and wave run up may produce some minor coastal flooding along the Blue Water Highway, Surfside, and at the Highway 87 and 124 intersection of the Bolivar Peninsula this morning near times of high tide. Moderate to strong rip currents are also possible along area beaches today. Expect some showers and thunderstorms across the area today. Some could produce locally heavy rainfall through the early afternoon hours. Stronger cells will be capable of producing 20 to 40 mph wind gusts as well. With a tropical airmass in place, a few funnel clouds are a possibility. These typically last a few minutes and the vast majority do not typically reach the ground, but can do minor damage if they do. .DAYS TWO THROUGH SEVEN...Sunday through Friday We will be keeping an eye on water levels around times of high tides for the next couple days as they could briefly approach levels needed for minor coastal flooding at the most susceptible locations. Fairly good chances of showers and thunderstorms are expected into midweek. With slow storm motions, some localized heavy rainfall may be possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time. GMZ330-335-350-355-370-375-251115- Coastal waters from Freeport to the Matagorda Ship Channel out 20 NM-Coastal waters from High Island to Freeport out 20 NM- Galveston Bay-Matagorda Bay- Waters from Freeport to the Matagorda Ship Channel from 20 to 60 NM-Waters from High Island to Freeport from 20 to 60 NM- 610 AM CDT Sat Jun 24 2017 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight Small craft should exercise caution in the Gulf waters due to elevated seas. Winds and seas will be higher in scattered thunderstorms...more numerous in the bays. Due to the tropical airmass in place...isolated funnels or waterspouts will also be a possibility. .DAYS TWO THROUGH SEVEN...Sunday through Friday Fairly good chances of showers and thunderstorms are expected into early midweek. Winds and seas will be higher in and near storms. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time. TXZ200-210>213-226-227-235-236-251115- Austin-Colorado-Fort Bend-Harris-Jackson-Liberty-Matagorda-Waller- Wharton- 610 AM CDT Sat Jun 24 2017 This hazardous weather outlook is for portions of Southeast Texas.. .DAY ONE...Today and Tonight Expect some showers and thunderstorms across the area today. Some could produce locally heavy rainfall especially this morning into the early afternoon hours. High rain rates in a short time period can cause street flooding. Stronger cells will be capable of producing 20 to 40 mph wind gusts as well. With a tropical airmass in place, a few funnel clouds are a possibility. These typically last a few minutes and the vast majority do not typically reach the ground, but can do minor damage if they do. .DAYS TWO THROUGH SEVEN...Sunday through Friday Increased chances of showers and thunderstorms are expected this weekend into early next week. With slow storm motions, we will be keeping an eye on the possibility for some localized heavy rainfall. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time.
The Houston radar (KHGX), 47 km away, was scanning. The volume nearest the first event began at 10:20 UTC.
1 flash flood. Local standard time, as filed.
Early morning flash flooding and associated road closures occurred in and around the Houston area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2017Every state in 2017This day in weather historyWarnings in Texas, June 2017
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: 710727.