Localized flash flooding developed in the morning along slow moving and merging storms.
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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.
Localized flash flooding developed in the morning along slow moving and merging storms.
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 24, 9:01 AM CST, 4 minutes earlier.
Area Forecast Discussion National Weather Service Houston/Galveston TX 1001 AM CDT Sat Jun 24 2017 .DISCUSSION... Bumped up PoPs in the update this morning, to account for the large swath of showers and thunderstorms that have resulted from the collision of two boundaries this morning. One boundary which has moved in from the northeast, and the other that has pushed northward from the south which originally formed near the coast. These storms will continue to produce localized flooding due to heavy rainfall, and higher rain rates can be expected within some of these storms. Also tweaked temperatures slightly to account for current observations, keeping us a one or two degrees cooler due to cloud cover. Hathaway && .PREV DISCUSSION... /ISSUED 627 AM CDT Sat Jun 24 2017/ AVIATION... Complicated and messy forecast today. Patchy fog and some low cigs have settled around SE Texas this morning. At the same time, a broken line of thunderstorms is pushing southwestward through the northern taf sites right now while scattered showers and storms continue to develop near the coast and push northward into the southern half of the taf sites. Model consensus is generally that periods of showers and thunderstorms will be ongoing for today and into this evening, but overall timing trends are very hard to pin down. Other than the initial convection happening right now, the tafs have VCTS wording pretty much all day and amendments will likely be needed to better pin down the timing as things progress. Vis and cigs should gradually improve to VFR other than right inside thunderstorms this afternoon with some possible MVFR cigs and patchy fog developing again overnight tonight. 11 PREV DISCUSSION... /ISSUED 449 AM CDT Sat Jun 24 2017/ DISCUSSION... Precip along a long lived ssw moving outflow has combined with another line of shra/tstms moving swd across north Texas. This line is currently moving into southeast Texas ahead of schedule/forecast. Assuming it maintains about the same motion, it should be situated from roughly Brenham to Houston to Winnie by around 8am. Speed convergence along the coast is contributing to additional (and increasing) precip development along the coast. The threat of localized heavy rain will occur should this continue to fill in and collide/merge with the incoming precip from the north later this morning. We've included the mention of heavy rain in the grids for areas generally along/south of a Bellville Liberty line this morning. Not a whole lot of confidence as to what the remainder of the day has in store. One would think we'd have a decent break in the early to mid afternoon hours in the wake of this mornings activity. But with 2-3.3" PW's in place, along with low convective temperatures, it won't take much heating to get additional activity to develop. Have 50% POPs in as placeholders for the afternoon, which can be adjusted either way as trends are established. Southeast Texas will remain in a general weakness aloft for a good portion of the week. Available moisture will be highest, and convective temps lowest, areawide between now and Tuesday. Slow storm motions are forecast, at least on the synoptic scale, as well so we'll need to continue to keep an eye on the localized heavy rain potential. Timing of precip will be difficult, and much will probably occur on a mesoscale/microscale level not modeled well further in time. So, like this afternoon, a lot of the POPs and timing are broad brushed and will be refined with near term trends. Gradually lowering moisture levels, especially inland, are expected during the second half of the week. So we'd generally expect warmer conditions and less precip coverage then. Medium range solutions do try to gradually build the eastern ridge back overhead next weekend. 47 MARINE... A SCEC is in effect through 9 AM this morning as winds will be at least gusting to over 15kt through around mid morning. Winds and seas will continue to diminish over the weekend before ramping up again beginning mid week as the gradient tightens in response to a developing surface cyclone over the lee side of the Rockies. Tides remain slightly elevated this morning and are running about 1.5 feet or so above normal. A Beach Hazards Statement is in effect through noon today as these tide levels and wave run up will likely cause some water to wash over Hwy 87 on Bolivar around high tide this morning. These conditions will also likely cause strong rip currents and longshore currents along Gulf-facing beaches today. With winds and seas gradually diminishing, tide levels should improve heading into this weekend. 11 && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 86 73 87 71 88 / 60 50 50 40 40 Houston (IAH) 87 75 87 72 87 / 70 40 50 40 60 Galveston (GLS) 87 79 87 78 86 / 50 30 50 40 60 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...NONE. GM...NONE. && Update...08
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), 55 km away, was scanning. The volume nearest the first event began at 15:02 UTC.
1 flash flood. Local standard time, as filed.
Road closures and a couple of water rescues occurred mainly on the east side of Houston from the North and Northeast 610 Loop to along the southeast side of Beltway 8.
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: 710726.