An upper ridge was over the southern half of the country. There was good moisture across West Texas.
Every event with a place to put it. Tap one for its entry below.
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 MAF wrote it up.
An upper ridge was over the southern half of the country. There was good moisture across West Texas. The moisture and hot temperatures allowed for thunderstorms with heavy rainfall and flash flooding to develop across the 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 Midland/Odessa, TX wrote its last area forecast discussion before the first event at Jul 21, 5:12 PM CST, 40 minutes earlier.
Area Forecast Discussion National Weather Service Midland/Odessa TX 612 PM CDT Fri Jul 21 2017 .AVIATION... 00Z TAF issuance. Scattered areas of convection across the region have begun to diminish in coverage this evening. Still have TS near HOB and INK at 21/23Z but not expecting any activity to hang on beyond sunset. Will continue TEMPO thunder at all but CNM and MAF through 22/02Z. Any thunderstorm that affects the terminals will result in brief heavy rainfall, likely reducing visibility. Will continue to monitor radar trends and amend if needed. Otherwise, VFR conditions will prevail at all terminals through this TAF period with the potential repeat of thunderstorm activity Saturday afternoon. && .PREV DISCUSSION... /issued 237 PM CDT Fri Jul 21 2017/ DISCUSSION... There is an increase in convection this afternoon over what was seen yesterday, with scattered showers and thunderstorms developing mainly west of the Pecos River. Some of this activity will move northeast into the western Permian Basin possibly making it as far as Midland/Odessa. Being diurnally driven, these showers will continue through early this evening before diminishing with lightning and brief heavy rain/local flooding the main threats. The upper pattern changes little through the weekend so more of the same can be expected with afternoon highs in the upper 90s and scattered convection most prevalent west of the Pecos. Beginning Tuesday, models are indicating that the upper high currently over the Central Plains will move south and increase slightly in strength. This could cause convective coverage to decrease and allow high temps to nudge upward a few degrees the remainder of the week. Hennig && .PRELIMINARY POINT TEMPS/POPS... Big Spring 76 97 75 96 / 10 10 10 20 Carlsbad 72 95 73 96 / 20 30 20 40 Dryden 77 97 77 97 / 10 10 10 10 Fort Stockton 71 93 72 96 / 20 30 20 20 Guadalupe Pass 63 83 65 79 / 30 50 30 50 Hobbs 69 93 70 93 / 10 20 20 30 Marfa 65 84 63 87 / 30 50 30 40 Midland Intl Airport 74 96 73 95 / 10 20 10 20 Odessa 75 95 74 94 / 10 20 10 20 Wink 74 97 75 97 / 20 20 20 30 && .MAF WATCHES/WARNINGS/ADVISORIES... NM...None. TX...None. && 27/49
Hazardous Weather Outlook National Weather Service Midland/Odessa TX 203 PM CDT Fri Jul 21 2017 NMZ027>029-033-034-TXZ045>048-050>053-057>063-067>070-074-075- 079>082-258-221915- Guadalupe Mountains of Eddy County-Eddy County Plains- Northern Lea County-Central Lea County-Southern Lea County-Gaines- Dawson-Borden-Scurry-Andrews-Martin-Howard-Mitchell- Van Horn and Highway 54 Corridor-Reeves County and Upper Trans Pecos- Loving-Winkler-Ector-Midland-Glasscock-Ward-Crane-Upton-Reagan- Davis/Apache Mountains Area-Pecos-Presidio Valley-Marfa Plateau- Big Bend Area-Terrell-Guadalupe Mountains- 203 PM CDT Fri Jul 21 2017 /103 PM MDT Fri Jul 21 2017/ This hazardous weather outlook is for portions of southeast New Mexico, southwest Texas and western Texas. .DAY ONE...THIS AFTERNOON AND TONIGHT Thunderstorms are possible through tonight, mainly along and west of the Pecos. The strongest storms will have the potential to produce brief gusty winds, small hail and frequent lightning. Locally heavy rainfall with localized flash flooding will be a concern. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated. This product, along with other watches, warnings, advisories, and statements issued by the National Weather Service Office in Midland, can be found on the internet at... http://weather.gov/midland
Special Weather Statement National Weather Service Midland/Odessa TX 501 PM CDT FRI JUL 21 2017 TXZ074-075-081-212245- Pecos TX-Big Bend Area TX-Davis/Apache Mountains Area TX- 501 PM CDT FRI JUL 21 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN PECOS AND NORTHWESTERN BREWSTER COUNTIES UNTIL 545 PM CDT... At 459 PM CDT, Doppler radar was tracking a strong thunderstorm near Marathon, moving northeast at 35 mph. Wind gusts up to 50 mph and brief heavy rain will be possible with this storm. Locations impacted include... Marathon, Glass Mountains near Marathon and Altuda. LAT...LON 3012 10317 3026 10348 3067 10334 3034 10282 TIME...MOT...LOC 2159Z 203DEG 29KT 3030 10329 49
The Midland/Odessa radar (KMAF), 111 km away, was scanning. The volume nearest the first event began at 23:53 UTC.
2 flash flood. Local standard time, as filed.
Heavy rain moved across Gaines County and produced flash flooding about ten miles north of Seminole. There was water over Highway 385/62 near McAdoo Curve. A couple of stalled vehicles were reported. The cost of damage is a very rough estimate.
Heavy rain moved across Gaines County and produced flash flooding about eight miles southwest of Seminole. There was water over the roadways near Highway 181 and Ranch Road 2885.
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, July 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: 709799, 709800.