There was a tornado near Cypress.
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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.
There was a tornado near Cypress.
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 Aug 12, 2:27 PM CST, 1 hour 5 minutes earlier.
Area Forecast Discussion National Weather Service Houston/Galveston TX 327 PM CDT Thu Aug 12 2021 .SHORT TERM [Tonight Through Friday Night]... A weak short wave trough over SE TX will provide the area with a continuation of showers and thunderstorms this afternoon ending with the loss of heating this evening. MinT values tonight will remain on the warm side as sfc dew points remain in the mid/upper 70's. A few streamer showers will be possible toward Friday morning along the coast. Friday is looking more like a transition day with the weak short wave moving off to the east and upper level ridging developing over North Texas. PW values are progged to be highest in the AM with slightly drier conditions in the afternoon. That said, some of the short term guidance and CAMs still show pretty good coverage for tomorrow with heating. The orientation of the building upper ridge should shunt the deeper moisture to the southern half of the CWA so will taper PoPs highest over the south and drier to the north. With the building heights, feel MaxT values will increase a bit and will bump high temps into the mid and upper 90's. Heat Index values will be very warm and approach 105 degrees or so but look to remain below Heat Advisory criteria. Friday night looks drier with and residual showers ending shortly after sunset. MinT values will again stay on the warm side with lows in the mid/upper 70's. 43 .LONG TERM [Saturday through Sunday Night]... The medium range starts off with upper level troughing over the northeastern CONUS and now tropical depression Fred near the eastern Gulf of Mexico. A typical daytime pattern is anticipated on Saturday with isolated to scattered thunderstorms in the afternoon and early evening. The aforementioned trough will drag an poorly-defined boundary southward into the northern TX/Lower MS Valley on Sunday. With the tropical cyclone to the east, looks like this weak boundary will remain just north of our region before it washes out. However, increased Gulf moisture will persist with PWATs increasing to 2+ inches. This will allow for isolated to scattered activity ahead of the boundary or with any outflow boundaries developing ahead of it. Have kept chances for precipitation between 30-50 percent for Saturday and Sunday with better chances on Sunday. Onshore flow at the surface will prevail throughout the upcoming week. The combination of Gulf moisture and sea/bay breeze will produce our typical summer pattern with early morning streamer showers and afternoon thunderstorms. Temperature-wise, Saturday is expected to be another hot day with highs climbing into the mid 90s and heat indices in the triple digits. Near to slightly below temperatures are expected Sunday through Tuesday, given an increase in cloud cover and precipitation chances. 05 && .AVIATION [18Z TAF Issuance]... PW values between 2.00 and 2.20 inches coupled with daytime heating should foster further development of showers and thunderstorms this afternoon. Will carry VCTS at most TAF sites and TEMPOs may ultimately be required. Mainly VFR ceilings are expected today and tonight with a mix of MVFR and potentially IFR ceilings over northern TAF sites by Friday morning. Friday looks similar to today with showers developing near the coast early Fri morning and expanding inland with heating. 43 && .MARINE... Light to moderate onshore flow with seas from 2-3 ft are expected tonight through Friday night. Sfc high pressure builds in over central TX on Saturday, shifting winds to a more northeasterly component through Saturday night. Pressure gradient slackens late this weekend into the upcoming week, leading to light to occasionally onshore flow. Isolated showers and thunderstorms are expected each day, mainly in the morning. Better chances for scattered thunderstorms are expected on Sunday. Tropical Depression Fred is forecast to be near/at the Keys/southeastern Gulf of Mexico Saturday, then move north-northwestward along the western coast of Florida through Monday. Wave heights may increase at times over our waters. Interests should continue to monitor the progress of this tropical cyclone as it approaches the eastern Gulf of Mexico. 05 && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 75 95 76 95 75 / 10 20 10 30 20 Houston (IAH) 78 95 77 96 77 / 10 40 20 40 20 Galveston (GLS) 83 92 82 91 81 / 30 50 20 30 20 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && SHORT TERM...43 LONG TERM...05 AVIATION...43 MARINE...05
The Houston radar (KHGX), 80 km away, was scanning. The volume nearest the first event began at 21:30 UTC.
1 tornado. Local standard time, as filed.
Law enforcement and multiple spotters reported five power poles were downed by a brief EF0 landspout tornado.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2021Every state in 2021This day in weather historyThe tornado archive for Texas, 2021Warnings in Texas, August 2021
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: 965639.